./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.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_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/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_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/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_90cf9262-cf70-47a0-ba05-45cfefa1fa15/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 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:46:46,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:46:46,979 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:46:46,987 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:46:46,989 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:46:47,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:46:47,035 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:46:47,036 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:46:47,037 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:46:47,042 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:46:47,042 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:46:47,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:46:47,044 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:46:47,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:46:47,047 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:46:47,048 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:46:47,048 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:46:47,048 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:46:47,049 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:46:47,050 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:46:47,050 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:46:47,051 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:46:47,051 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:46:47,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:46:47,053 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:46:47,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:46:47,055 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:46:47,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:46:47,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:46:47,057 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:46:47,058 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:46:47,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:46:47,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:47,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:46:47,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:46:47,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:46:47,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:46:47,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:46:47,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:46:47,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:46:47,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:46:47,061 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_90cf9262-cf70-47a0-ba05-45cfefa1fa15/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9071d56f4666aca734ab742196d3aa15fce92ad6b7c276706d2cff43d2d6147a [2023-11-24 21:46:47,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:46:47,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:46:47,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:46:47,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:46:47,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:46:47,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:46:50,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:46:50,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:46:50,907 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/sv-benchmarks/c/pthread-wmm/safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:46:50,926 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/data/b9bd50b21/b611efe24abb4de0bb5edb771e8fc48f/FLAG9d509855d [2023-11-24 21:46:50,949 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/data/b9bd50b21/b611efe24abb4de0bb5edb771e8fc48f [2023-11-24 21:46:50,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:46:50,953 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:46:50,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:50,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:46:50,964 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:46:50,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:50" (1/1) ... [2023-11-24 21:46:50,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c59099c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:50, skipping insertion in model container [2023-11-24 21:46:50,966 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:46:50" (1/1) ... [2023-11-24 21:46:51,022 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:46:51,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:51,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:46:51,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:46:51,613 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:51,613 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 21:46:51,622 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:46:51,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51 WrapperNode [2023-11-24 21:46:51,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:46:51,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:51,625 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:46:51,625 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:46:51,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,671 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,702 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2023-11-24 21:46:51,703 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:46:51,704 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:46:51,704 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:46:51,705 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:46:51,718 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,718 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,772 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 21:46:51,773 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,773 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,793 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,795 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,797 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,803 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:46:51,808 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:46:51,808 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:46:51,808 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:46:51,809 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (1/1) ... [2023-11-24 21:46:51,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:46:51,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:46:51,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:46:51,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:46:51,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:46:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:46:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:46:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:46:51,899 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-24 21:46:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:46:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:46:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:46:51,900 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-24 21:46:51,901 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-24 21:46:51,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-24 21:46:51,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-24 21:46:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-24 21:46:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-24 21:46:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:46:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:46:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:46:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:46:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-24 21:46:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:46:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:46:51,908 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 21:46:52,094 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:46:52,096 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:46:52,400 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:46:52,521 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:46:52,521 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:46:52,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:52 BoogieIcfgContainer [2023-11-24 21:46:52,522 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:46:52,525 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:46:52,525 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:46:52,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:46:52,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:46:50" (1/3) ... [2023-11-24 21:46:52,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:52, skipping insertion in model container [2023-11-24 21:46:52,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:46:51" (2/3) ... [2023-11-24 21:46:52,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768c40ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:46:52, skipping insertion in model container [2023-11-24 21:46:52,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:52" (3/3) ... [2023-11-24 21:46:52,536 INFO L112 eAbstractionObserver]: Analyzing ICFG safe025_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-11-24 21:46:52,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:46:52,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-24 21:46:52,560 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:46:52,635 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 21:46:52,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:46:52,716 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2023-11-24 21:46:52,716 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:46:52,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 50 events. 2/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2023-11-24 21:46:52,720 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 118 flow [2023-11-24 21:46:52,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 49 transitions, 107 flow [2023-11-24 21:46:52,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:46:52,747 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;@6a3d3dab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:46:52,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-24 21:46:52,751 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:46:52,752 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 21:46:52,752 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:46:52,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:52,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:46:52,753 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 21:46:52,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash 7502, now seen corresponding path program 1 times [2023-11-24 21:46:52,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:52,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110909918] [2023-11-24 21:46:52,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:52,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:53,065 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 21:46:53,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110909918] [2023-11-24 21:46:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110909918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:53,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:53,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:46:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213069980] [2023-11-24 21:46:53,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:53,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:53,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:53,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:53,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:53,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-24 21:46:53,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 107 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 21:46:53,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:53,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-24 21:46:53,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:53,307 INFO L124 PetriNetUnfolderBase]: 75/248 cut-off events. [2023-11-24 21:46:53,308 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-24 21:46:53,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 248 events. 75/248 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1398 event pairs, 63 based on Foata normal form. 16/235 useless extension candidates. Maximal degree in co-relation 390. Up to 117 conditions per place. [2023-11-24 21:46:53,318 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-11-24 21:46:53,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 141 flow [2023-11-24 21:46:53,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 21:46:53,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-24 21:46:53,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:53,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:53,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:53,353 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 107 flow. Second operand 3 states and 120 transitions. [2023-11-24 21:46:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 141 flow [2023-11-24 21:46:53,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 138 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:46:53,361 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 100 flow [2023-11-24 21:46:53,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2023-11-24 21:46:53,368 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2023-11-24 21:46:53,368 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 100 flow [2023-11-24 21:46:53,369 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 21:46:53,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:53,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 21:46:53,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:46:53,370 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 21:46:53,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:53,371 INFO L85 PathProgramCache]: Analyzing trace with hash 7503, now seen corresponding path program 1 times [2023-11-24 21:46:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326382167] [2023-11-24 21:46:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:53,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:53,544 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 21:46:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326382167] [2023-11-24 21:46:53,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326382167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:53,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:53,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:46:53,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563407582] [2023-11-24 21:46:53,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:53,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:53,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:53,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:53,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:53,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-24 21:46:53,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 21:46:53,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:53,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-24 21:46:53,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:53,706 INFO L124 PetriNetUnfolderBase]: 75/247 cut-off events. [2023-11-24 21:46:53,706 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:46:53,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 247 events. 75/247 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1391 event pairs, 63 based on Foata normal form. 1/219 useless extension candidates. Maximal degree in co-relation 398. Up to 116 conditions per place. [2023-11-24 21:46:53,711 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-24 21:46:53,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 138 flow [2023-11-24 21:46:53,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 21:46:53,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-24 21:46:53,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:53,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 21:46:53,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:53,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:53,718 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:53,719 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 100 flow. Second operand 3 states and 120 transitions. [2023-11-24 21:46:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 138 flow [2023-11-24 21:46:53,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:53,722 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 98 flow [2023-11-24 21:46:53,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 21:46:53,723 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -4 predicate places. [2023-11-24 21:46:53,724 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 98 flow [2023-11-24 21:46:53,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 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 21:46:53,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:53,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:46:53,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:46:53,725 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 21:46:53,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:53,726 INFO L85 PathProgramCache]: Analyzing trace with hash 223708650, now seen corresponding path program 1 times [2023-11-24 21:46:53,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:53,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604950269] [2023-11-24 21:46:53,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:53,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:53,815 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 21:46:53,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:53,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604950269] [2023-11-24 21:46:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604950269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:53,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:46:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367900851] [2023-11-24 21:46:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:53,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:53,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-24 21:46:53,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 98 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 21:46:53,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:53,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-24 21:46:53,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:53,981 INFO L124 PetriNetUnfolderBase]: 76/246 cut-off events. [2023-11-24 21:46:53,982 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-24 21:46:53,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 246 events. 76/246 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1373 event pairs, 42 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 400. Up to 116 conditions per place. [2023-11-24 21:46:53,986 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-24 21:46:53,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 138 flow [2023-11-24 21:46:53,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:53,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:53,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-24 21:46:54,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-24 21:46:54,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:54,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 21:46:54,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,014 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 98 flow. Second operand 3 states and 118 transitions. [2023-11-24 21:46:54,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 138 flow [2023-11-24 21:46:54,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:54,017 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 96 flow [2023-11-24 21:46:54,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 21:46:54,032 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2023-11-24 21:46:54,032 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 96 flow [2023-11-24 21:46:54,032 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 21:46:54,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:54,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:46:54,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:46:54,033 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 21:46:54,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash 223708651, now seen corresponding path program 1 times [2023-11-24 21:46:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:54,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105979859] [2023-11-24 21:46:54,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:54,157 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 21:46:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105979859] [2023-11-24 21:46:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105979859] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:54,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:54,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:46:54,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712670065] [2023-11-24 21:46:54,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:54,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:54,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:54,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:54,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-24 21:46:54,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:46:54,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:54,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-24 21:46:54,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:54,255 INFO L124 PetriNetUnfolderBase]: 75/242 cut-off events. [2023-11-24 21:46:54,255 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:46:54,257 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 27. Compared 1376 event pairs, 62 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 21:46:54,259 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-24 21:46:54,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 134 flow [2023-11-24 21:46:54,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:54,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 21:46:54,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-24 21:46:54,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:54,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:54,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,264 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 96 flow. Second operand 3 states and 120 transitions. [2023-11-24 21:46:54,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 134 flow [2023-11-24 21:46:54,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:54,268 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 94 flow [2023-11-24 21:46:54,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 21:46:54,270 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2023-11-24 21:46:54,270 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 94 flow [2023-11-24 21:46:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:46:54,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:54,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:54,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:46:54,273 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 21:46:54,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:54,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1284636182, now seen corresponding path program 1 times [2023-11-24 21:46:54,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:54,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003214426] [2023-11-24 21:46:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:54,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:54,366 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 21:46:54,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:54,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003214426] [2023-11-24 21:46:54,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003214426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:54,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:54,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:46:54,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551550678] [2023-11-24 21:46:54,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:54,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:54,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:54,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:54,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:54,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 53 [2023-11-24 21:46:54,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 94 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 21:46:54,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:54,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 53 [2023-11-24 21:46:54,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:54,452 INFO L124 PetriNetUnfolderBase]: 79/243 cut-off events. [2023-11-24 21:46:54,452 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-24 21:46:54,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 243 events. 79/243 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1368 event pairs, 27 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 404. Up to 112 conditions per place. [2023-11-24 21:46:54,455 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 16 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-11-24 21:46:54,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 134 flow [2023-11-24 21:46:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-24 21:46:54,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7421383647798742 [2023-11-24 21:46:54,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:54,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-24 21:46:54,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 21:46:54,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,460 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,461 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 94 flow. Second operand 3 states and 118 transitions. [2023-11-24 21:46:54,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 134 flow [2023-11-24 21:46:54,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 44 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:54,463 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 92 flow [2023-11-24 21:46:54,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 21:46:54,465 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2023-11-24 21:46:54,465 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 92 flow [2023-11-24 21:46:54,465 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 21:46:54,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:54,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:46:54,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:46:54,466 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 21:46:54,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:54,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1284636181, now seen corresponding path program 1 times [2023-11-24 21:46:54,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:54,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846664545] [2023-11-24 21:46:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:54,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:54,587 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 21:46:54,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:54,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846664545] [2023-11-24 21:46:54,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846664545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:54,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:54,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:46:54,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890405049] [2023-11-24 21:46:54,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:54,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:46:54,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:54,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:46:54,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:46:54,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 53 [2023-11-24 21:46:54,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:46:54,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:54,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 53 [2023-11-24 21:46:54,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:54,669 INFO L124 PetriNetUnfolderBase]: 75/227 cut-off events. [2023-11-24 21:46:54,669 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:46:54,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 227 events. 75/227 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1197 event pairs, 60 based on Foata normal form. 4/221 useless extension candidates. Maximal degree in co-relation 382. Up to 104 conditions per place. [2023-11-24 21:46:54,673 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 15 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-24 21:46:54,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 130 flow [2023-11-24 21:46:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:46:54,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:46:54,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-24 21:46:54,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7547169811320755 [2023-11-24 21:46:54,675 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:54,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-24 21:46:54,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:54,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:46:54,678 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 92 flow. Second operand 3 states and 120 transitions. [2023-11-24 21:46:54,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 130 flow [2023-11-24 21:46:54,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:54,680 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 90 flow [2023-11-24 21:46:54,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, 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 21:46:54,682 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2023-11-24 21:46:54,682 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 90 flow [2023-11-24 21:46:54,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:46:54,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:54,683 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 21:46:54,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:46:54,683 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 21:46:54,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1460269824, now seen corresponding path program 1 times [2023-11-24 21:46:54,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:54,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037647278] [2023-11-24 21:46:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:54,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:54,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:55,169 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 21:46:55,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:55,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037647278] [2023-11-24 21:46:55,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037647278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:55,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:46:55,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641445575] [2023-11-24 21:46:55,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:55,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:46:55,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:55,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:46:55,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:46:55,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-24 21:46:55,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 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 21:46:55,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:55,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-24 21:46:55,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:55,451 INFO L124 PetriNetUnfolderBase]: 76/226 cut-off events. [2023-11-24 21:46:55,451 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-24 21:46:55,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 226 events. 76/226 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1218 event pairs, 36 based on Foata normal form. 8/220 useless extension candidates. Maximal degree in co-relation 384. Up to 104 conditions per place. [2023-11-24 21:46:55,455 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 14 selfloop transitions, 3 changer transitions 4/45 dead transitions. [2023-11-24 21:46:55,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 142 flow [2023-11-24 21:46:55,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:46:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:46:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2023-11-24 21:46:55,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540880503144654 [2023-11-24 21:46:55,458 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 208 transitions. [2023-11-24 21:46:55,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 208 transitions. [2023-11-24 21:46:55,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:55,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 208 transitions. [2023-11-24 21:46:55,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 34.666666666666664) internal successors, (208), 6 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 21:46:55,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:46:55,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:46:55,466 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 90 flow. Second operand 6 states and 208 transitions. [2023-11-24 21:46:55,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 142 flow [2023-11-24 21:46:55,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:46:55,470 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 88 flow [2023-11-24 21:46:55,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=88, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-24 21:46:55,472 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -6 predicate places. [2023-11-24 21:46:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 88 flow [2023-11-24 21:46:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 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 21:46:55,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:55,473 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 21:46:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 21:46:55,474 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 21:46:55,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1460271271, now seen corresponding path program 1 times [2023-11-24 21:46:55,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:55,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089431463] [2023-11-24 21:46:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:55,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:55,757 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 21:46:55,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:55,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089431463] [2023-11-24 21:46:55,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089431463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:55,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:55,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:55,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83338090] [2023-11-24 21:46:55,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:46:55,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:55,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:46:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:46:55,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2023-11-24 21:46:55,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:55,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:55,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2023-11-24 21:46:55,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:56,284 INFO L124 PetriNetUnfolderBase]: 1491/2724 cut-off events. [2023-11-24 21:46:56,284 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-24 21:46:56,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5083 conditions, 2724 events. 1491/2724 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 19541 event pairs, 317 based on Foata normal form. 0/2623 useless extension candidates. Maximal degree in co-relation 5072. Up to 788 conditions per place. [2023-11-24 21:46:56,305 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 27 selfloop transitions, 6 changer transitions 55/106 dead transitions. [2023-11-24 21:46:56,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 106 transitions, 404 flow [2023-11-24 21:46:56,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-24 21:46:56,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-24 21:46:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 342 transitions. [2023-11-24 21:46:56,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7169811320754716 [2023-11-24 21:46:56,308 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 342 transitions. [2023-11-24 21:46:56,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 342 transitions. [2023-11-24 21:46:56,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:56,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 342 transitions. [2023-11-24 21:46:56,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 0 states have call successors, (0), 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 21:46:56,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 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 21:46:56,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 53.0) internal successors, (530), 10 states have internal predecessors, (530), 0 states have call successors, (0), 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 21:46:56,312 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 9 states and 342 transitions. [2023-11-24 21:46:56,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 106 transitions, 404 flow [2023-11-24 21:46:56,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 398 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:46:56,315 INFO L231 Difference]: Finished difference. Result has 62 places, 42 transitions, 165 flow [2023-11-24 21:46:56,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=42} [2023-11-24 21:46:56,316 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-11-24 21:46:56,317 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 42 transitions, 165 flow [2023-11-24 21:46:56,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:56,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:56,317 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 21:46:56,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 21:46:56,318 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 21:46:56,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:56,318 INFO L85 PathProgramCache]: Analyzing trace with hash 322046204, now seen corresponding path program 1 times [2023-11-24 21:46:56,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:56,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568053582] [2023-11-24 21:46:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:56,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:56,491 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 21:46:56,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:56,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568053582] [2023-11-24 21:46:56,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568053582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:56,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:56,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:46:56,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90748187] [2023-11-24 21:46:56,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:56,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:46:56,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:56,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:46:56,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:46:56,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2023-11-24 21:46:56,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 42 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 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 21:46:56,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:56,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2023-11-24 21:46:56,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:56,954 INFO L124 PetriNetUnfolderBase]: 959/1906 cut-off events. [2023-11-24 21:46:56,955 INFO L125 PetriNetUnfolderBase]: For 2574/2580 co-relation queries the response was YES. [2023-11-24 21:46:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5554 conditions, 1906 events. 959/1906 cut-off events. For 2574/2580 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13106 event pairs, 207 based on Foata normal form. 60/1949 useless extension candidates. Maximal degree in co-relation 5535. Up to 656 conditions per place. [2023-11-24 21:46:56,974 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 37 selfloop transitions, 7 changer transitions 42/104 dead transitions. [2023-11-24 21:46:56,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 104 transitions, 645 flow [2023-11-24 21:46:56,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:46:56,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:46:56,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 362 transitions. [2023-11-24 21:46:56,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6830188679245283 [2023-11-24 21:46:56,977 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 362 transitions. [2023-11-24 21:46:56,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 362 transitions. [2023-11-24 21:46:56,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:56,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 362 transitions. [2023-11-24 21:46:56,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 36.2) internal successors, (362), 10 states have internal predecessors, (362), 0 states have call successors, (0), 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 21:46:56,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 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 21:46:56,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 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 21:46:56,981 INFO L175 Difference]: Start difference. First operand has 62 places, 42 transitions, 165 flow. Second operand 10 states and 362 transitions. [2023-11-24 21:46:56,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 104 transitions, 645 flow [2023-11-24 21:46:56,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 569 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-11-24 21:46:56,995 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 211 flow [2023-11-24 21:46:56,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=211, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2023-11-24 21:46:56,996 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2023-11-24 21:46:56,996 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 211 flow [2023-11-24 21:46:56,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.0) internal successors, (180), 6 states have internal predecessors, (180), 0 states have call successors, (0), 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 21:46:56,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:56,997 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] [2023-11-24 21:46:56,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 21:46:56,997 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 21:46:56,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:56,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1138470529, now seen corresponding path program 1 times [2023-11-24 21:46:56,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:56,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711383377] [2023-11-24 21:46:56,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:56,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:57,148 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 21:46:57,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:57,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711383377] [2023-11-24 21:46:57,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711383377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:57,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:57,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:57,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330041828] [2023-11-24 21:46:57,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:57,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:46:57,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:57,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:46:57,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:46:57,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 53 [2023-11-24 21:46:57,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 211 flow. Second operand has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 21:46:57,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:57,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 53 [2023-11-24 21:46:57,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:57,418 INFO L124 PetriNetUnfolderBase]: 530/1224 cut-off events. [2023-11-24 21:46:57,418 INFO L125 PetriNetUnfolderBase]: For 2550/2601 co-relation queries the response was YES. [2023-11-24 21:46:57,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3527 conditions, 1224 events. 530/1224 cut-off events. For 2550/2601 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8725 event pairs, 156 based on Foata normal form. 40/1196 useless extension candidates. Maximal degree in co-relation 3501. Up to 480 conditions per place. [2023-11-24 21:46:57,432 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 17 selfloop transitions, 4 changer transitions 17/66 dead transitions. [2023-11-24 21:46:57,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 66 transitions, 377 flow [2023-11-24 21:46:57,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:46:57,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:46:57,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2023-11-24 21:46:57,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008086253369272 [2023-11-24 21:46:57,434 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 260 transitions. [2023-11-24 21:46:57,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 260 transitions. [2023-11-24 21:46:57,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:57,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 260 transitions. [2023-11-24 21:46:57,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 37.142857142857146) internal successors, (260), 7 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 21:46:57,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:57,438 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 211 flow. Second operand 7 states and 260 transitions. [2023-11-24 21:46:57,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 66 transitions, 377 flow [2023-11-24 21:46:57,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 336 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-11-24 21:46:57,460 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 212 flow [2023-11-24 21:46:57,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=212, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2023-11-24 21:46:57,461 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-11-24 21:46:57,462 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 212 flow [2023-11-24 21:46:57,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.2) internal successors, (171), 5 states have internal predecessors, (171), 0 states have call successors, (0), 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 21:46:57,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:57,462 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 21:46:57,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 21:46:57,463 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 21:46:57,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -805750875, now seen corresponding path program 1 times [2023-11-24 21:46:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725807625] [2023-11-24 21:46:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:57,613 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 21:46:57,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:57,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725807625] [2023-11-24 21:46:57,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725807625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:57,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:57,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:46:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008557261] [2023-11-24 21:46:57,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:46:57,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:46:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:46:57,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 53 [2023-11-24 21:46:57,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 212 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 21:46:57,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:57,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 53 [2023-11-24 21:46:57,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:58,101 INFO L124 PetriNetUnfolderBase]: 787/1739 cut-off events. [2023-11-24 21:46:58,101 INFO L125 PetriNetUnfolderBase]: For 2462/2488 co-relation queries the response was YES. [2023-11-24 21:46:58,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4859 conditions, 1739 events. 787/1739 cut-off events. For 2462/2488 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13281 event pairs, 346 based on Foata normal form. 66/1689 useless extension candidates. Maximal degree in co-relation 4834. Up to 550 conditions per place. [2023-11-24 21:46:58,117 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 23 selfloop transitions, 4 changer transitions 47/98 dead transitions. [2023-11-24 21:46:58,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 98 transitions, 580 flow [2023-11-24 21:46:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 21:46:58,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-24 21:46:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 459 transitions. [2023-11-24 21:46:58,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6661828737300436 [2023-11-24 21:46:58,120 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 459 transitions. [2023-11-24 21:46:58,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 459 transitions. [2023-11-24 21:46:58,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:58,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 459 transitions. [2023-11-24 21:46:58,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 35.30769230769231) internal successors, (459), 13 states have internal predecessors, (459), 0 states have call successors, (0), 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 21:46:58,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 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 21:46:58,126 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 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 21:46:58,126 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 212 flow. Second operand 13 states and 459 transitions. [2023-11-24 21:46:58,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 98 transitions, 580 flow [2023-11-24 21:46:58,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 528 flow, removed 21 selfloop flow, removed 12 redundant places. [2023-11-24 21:46:58,146 INFO L231 Difference]: Finished difference. Result has 78 places, 45 transitions, 214 flow [2023-11-24 21:46:58,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=214, PETRI_PLACES=78, PETRI_TRANSITIONS=45} [2023-11-24 21:46:58,147 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 21 predicate places. [2023-11-24 21:46:58,147 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 45 transitions, 214 flow [2023-11-24 21:46:58,148 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 21:46:58,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:58,148 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 21:46:58,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 21:46:58,149 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 21:46:58,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:58,149 INFO L85 PathProgramCache]: Analyzing trace with hash -915140782, now seen corresponding path program 1 times [2023-11-24 21:46:58,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:58,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361912113] [2023-11-24 21:46:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:58,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:58,315 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 21:46:58,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:58,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361912113] [2023-11-24 21:46:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361912113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:58,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:58,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:46:58,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654795263] [2023-11-24 21:46:58,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:58,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:46:58,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:58,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:46:58,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:46:58,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-24 21:46:58,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 45 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 21:46:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-24 21:46:58,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:58,654 INFO L124 PetriNetUnfolderBase]: 1023/2058 cut-off events. [2023-11-24 21:46:58,655 INFO L125 PetriNetUnfolderBase]: For 2460/2478 co-relation queries the response was YES. [2023-11-24 21:46:58,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4968 conditions, 2058 events. 1023/2058 cut-off events. For 2460/2478 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 14306 event pairs, 225 based on Foata normal form. 102/2031 useless extension candidates. Maximal degree in co-relation 4938. Up to 927 conditions per place. [2023-11-24 21:46:58,679 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 27 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-11-24 21:46:58,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 313 flow [2023-11-24 21:46:58,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:46:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:46:58,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 158 transitions. [2023-11-24 21:46:58,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7452830188679245 [2023-11-24 21:46:58,682 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 158 transitions. [2023-11-24 21:46:58,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 158 transitions. [2023-11-24 21:46:58,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:58,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 158 transitions. [2023-11-24 21:46:58,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 21:46:58,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 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 21:46:58,685 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 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 21:46:58,685 INFO L175 Difference]: Start difference. First operand has 78 places, 45 transitions, 214 flow. Second operand 4 states and 158 transitions. [2023-11-24 21:46:58,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 313 flow [2023-11-24 21:46:58,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 281 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-11-24 21:46:58,707 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 220 flow [2023-11-24 21:46:58,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2023-11-24 21:46:58,710 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 4 predicate places. [2023-11-24 21:46:58,710 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 220 flow [2023-11-24 21:46:58,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 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 21:46:58,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:58,711 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] [2023-11-24 21:46:58,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 21:46:58,711 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 21:46:58,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1285844229, now seen corresponding path program 1 times [2023-11-24 21:46:58,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081447908] [2023-11-24 21:46:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:58,884 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 21:46:58,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:58,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081447908] [2023-11-24 21:46:58,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081447908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:58,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:58,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:46:58,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859111082] [2023-11-24 21:46:58,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:58,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:46:58,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:58,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:46:58,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:46:58,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-24 21:46:58,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:58,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:58,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-24 21:46:58,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:59,181 INFO L124 PetriNetUnfolderBase]: 842/1715 cut-off events. [2023-11-24 21:46:59,182 INFO L125 PetriNetUnfolderBase]: For 973/1620 co-relation queries the response was YES. [2023-11-24 21:46:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4444 conditions, 1715 events. 842/1715 cut-off events. For 973/1620 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11268 event pairs, 80 based on Foata normal form. 121/1728 useless extension candidates. Maximal degree in co-relation 4421. Up to 688 conditions per place. [2023-11-24 21:46:59,200 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 34 selfloop transitions, 8 changer transitions 0/70 dead transitions. [2023-11-24 21:46:59,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 369 flow [2023-11-24 21:46:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:46:59,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:46:59,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2023-11-24 21:46:59,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7509433962264151 [2023-11-24 21:46:59,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 199 transitions. [2023-11-24 21:46:59,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 199 transitions. [2023-11-24 21:46:59,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:59,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 199 transitions. [2023-11-24 21:46:59,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 39.8) internal successors, (199), 5 states have internal predecessors, (199), 0 states have call successors, (0), 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 21:46:59,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 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 21:46:59,205 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 53.0) internal successors, (318), 6 states have internal predecessors, (318), 0 states have call successors, (0), 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 21:46:59,205 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 220 flow. Second operand 5 states and 199 transitions. [2023-11-24 21:46:59,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 369 flow [2023-11-24 21:46:59,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 21:46:59,210 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 272 flow [2023-11-24 21:46:59,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-11-24 21:46:59,212 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-11-24 21:46:59,212 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 272 flow [2023-11-24 21:46:59,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:46:59,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:59,213 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] [2023-11-24 21:46:59,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 21:46:59,213 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 21:46:59,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 486060425, now seen corresponding path program 1 times [2023-11-24 21:46:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988181609] [2023-11-24 21:46:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:59,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:59,374 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 21:46:59,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:59,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988181609] [2023-11-24 21:46:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988181609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:59,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:46:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557368772] [2023-11-24 21:46:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:46:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:46:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:46:59,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 53 [2023-11-24 21:46:59,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 21:46:59,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:59,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 53 [2023-11-24 21:46:59,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:46:59,660 INFO L124 PetriNetUnfolderBase]: 658/1299 cut-off events. [2023-11-24 21:46:59,660 INFO L125 PetriNetUnfolderBase]: For 2286/3637 co-relation queries the response was YES. [2023-11-24 21:46:59,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 1299 events. 658/1299 cut-off events. For 2286/3637 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7956 event pairs, 44 based on Foata normal form. 109/1312 useless extension candidates. Maximal degree in co-relation 4088. Up to 576 conditions per place. [2023-11-24 21:46:59,674 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 33 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-11-24 21:46:59,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 411 flow [2023-11-24 21:46:59,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:46:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:46:59,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2023-11-24 21:46:59,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7295597484276729 [2023-11-24 21:46:59,677 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 232 transitions. [2023-11-24 21:46:59,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 232 transitions. [2023-11-24 21:46:59,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:46:59,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 232 transitions. [2023-11-24 21:46:59,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 38.666666666666664) internal successors, (232), 6 states have internal predecessors, (232), 0 states have call successors, (0), 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 21:46:59,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:46:59,680 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:46:59,680 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 272 flow. Second operand 6 states and 232 transitions. [2023-11-24 21:46:59,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 411 flow [2023-11-24 21:46:59,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 377 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-24 21:46:59,687 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 283 flow [2023-11-24 21:46:59,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2023-11-24 21:46:59,688 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-11-24 21:46:59,688 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 283 flow [2023-11-24 21:46:59,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 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 21:46:59,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:46:59,689 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, 1, 1, 1, 1] [2023-11-24 21:46:59,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 21:46:59,690 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 21:46:59,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:46:59,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1592659920, now seen corresponding path program 1 times [2023-11-24 21:46:59,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:46:59,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471474637] [2023-11-24 21:46:59,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:46:59,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:46:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:46:59,898 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 21:46:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:46:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471474637] [2023-11-24 21:46:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471474637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:46:59,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:46:59,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:46:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779612723] [2023-11-24 21:46:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:46:59,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:46:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:46:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:46:59,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:46:59,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 53 [2023-11-24 21:46:59,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 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 21:46:59,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:46:59,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 53 [2023-11-24 21:46:59,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:00,357 INFO L124 PetriNetUnfolderBase]: 914/1945 cut-off events. [2023-11-24 21:47:00,358 INFO L125 PetriNetUnfolderBase]: For 3613/3778 co-relation queries the response was YES. [2023-11-24 21:47:00,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5880 conditions, 1945 events. 914/1945 cut-off events. For 3613/3778 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13599 event pairs, 195 based on Foata normal form. 26/1770 useless extension candidates. Maximal degree in co-relation 5856. Up to 719 conditions per place. [2023-11-24 21:47:00,372 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 32 selfloop transitions, 13 changer transitions 22/93 dead transitions. [2023-11-24 21:47:00,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 93 transitions, 572 flow [2023-11-24 21:47:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 21:47:00,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-24 21:47:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2023-11-24 21:47:00,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6738544474393531 [2023-11-24 21:47:00,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 250 transitions. [2023-11-24 21:47:00,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 250 transitions. [2023-11-24 21:47:00,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:00,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 250 transitions. [2023-11-24 21:47:00,376 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 35.714285714285715) internal successors, (250), 7 states have internal predecessors, (250), 0 states have call successors, (0), 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 21:47:00,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 53.0) internal successors, (424), 8 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:47:00,378 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 283 flow. Second operand 7 states and 250 transitions. [2023-11-24 21:47:00,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 93 transitions, 572 flow [2023-11-24 21:47:00,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 93 transitions, 548 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-24 21:47:00,396 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 356 flow [2023-11-24 21:47:00,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2023-11-24 21:47:00,397 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2023-11-24 21:47:00,397 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 356 flow [2023-11-24 21:47:00,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 6 states have internal predecessors, (179), 0 states have call successors, (0), 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 21:47:00,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:47:00,398 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, 1, 1, 1, 1] [2023-11-24 21:47:00,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-24 21:47:00,398 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 21:47:00,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:47:00,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1151136610, now seen corresponding path program 2 times [2023-11-24 21:47:00,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:47:00,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886029782] [2023-11-24 21:47:00,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:47:00,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:47:00,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:47:00,638 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 21:47:00,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:47:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886029782] [2023-11-24 21:47:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886029782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:47:00,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:47:00,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:47:00,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800054150] [2023-11-24 21:47:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:47:00,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:47:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:47:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:47:00,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:47:00,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 53 [2023-11-24 21:47:00,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:47:00,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:47:00,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 53 [2023-11-24 21:47:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:47:00,981 INFO L124 PetriNetUnfolderBase]: 745/1643 cut-off events. [2023-11-24 21:47:00,982 INFO L125 PetriNetUnfolderBase]: For 3017/3098 co-relation queries the response was YES. [2023-11-24 21:47:00,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5204 conditions, 1643 events. 745/1643 cut-off events. For 3017/3098 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11900 event pairs, 186 based on Foata normal form. 27/1480 useless extension candidates. Maximal degree in co-relation 5186. Up to 900 conditions per place. [2023-11-24 21:47:00,993 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 0 selfloop transitions, 0 changer transitions 70/70 dead transitions. [2023-11-24 21:47:00,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 473 flow [2023-11-24 21:47:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:47:00,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-24 21:47:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2023-11-24 21:47:00,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6289308176100629 [2023-11-24 21:47:00,996 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 200 transitions. [2023-11-24 21:47:00,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 200 transitions. [2023-11-24 21:47:00,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:47:00,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 200 transitions. [2023-11-24 21:47:00,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 33.333333333333336) internal successors, (200), 6 states have internal predecessors, (200), 0 states have call successors, (0), 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 21:47:00,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:47:00,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 53.0) internal successors, (371), 7 states have internal predecessors, (371), 0 states have call successors, (0), 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 21:47:01,000 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 356 flow. Second operand 6 states and 200 transitions. [2023-11-24 21:47:01,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 473 flow [2023-11-24 21:47:01,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 70 transitions, 465 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-24 21:47:01,020 INFO L231 Difference]: Finished difference. Result has 73 places, 0 transitions, 0 flow [2023-11-24 21:47:01,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=68, 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=73, PETRI_TRANSITIONS=0} [2023-11-24 21:47:01,021 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2023-11-24 21:47:01,022 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 0 transitions, 0 flow [2023-11-24 21:47:01,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 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 21:47:01,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-11-24 21:47:01,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-11-24 21:47:01,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-11-24 21:47:01,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-11-24 21:47:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-11-24 21:47:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-11-24 21:47:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-11-24 21:47:01,027 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-11-24 21:47:01,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-11-24 21:47:01,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-11-24 21:47:01,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-11-24 21:47:01,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-24 21:47:01,029 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:47:01,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:47:01,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:47:01,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:47:01 BasicIcfg [2023-11-24 21:47:01,039 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:47:01,040 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:47:01,040 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:47:01,040 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:47:01,041 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:46:52" (3/4) ... [2023-11-24 21:47:01,043 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:47:01,047 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-24 21:47:01,047 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-24 21:47:01,047 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-24 21:47:01,053 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-24 21:47:01,053 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-24 21:47:01,054 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:47:01,054 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 21:47:01,140 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:47:01,140 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:47:01,140 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:47:01,141 INFO L158 Benchmark]: Toolchain (without parser) took 10187.92ms. Allocated memory was 148.9MB in the beginning and 287.3MB in the end (delta: 138.4MB). Free memory was 101.0MB in the beginning and 220.0MB in the end (delta: -119.0MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,142 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:01,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 668.49ms. Allocated memory is still 148.9MB. Free memory was 101.0MB in the beginning and 80.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.37ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 78.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,143 INFO L158 Benchmark]: Boogie Preprocessor took 102.95ms. Allocated memory is still 148.9MB. Free memory was 78.2MB in the beginning and 75.9MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:47:01,143 INFO L158 Benchmark]: RCFGBuilder took 714.06ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 75.8MB in the beginning and 160.9MB in the end (delta: -85.1MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,144 INFO L158 Benchmark]: TraceAbstraction took 8514.61ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 159.8MB in the beginning and 225.3MB in the end (delta: -65.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,144 INFO L158 Benchmark]: Witness Printer took 100.85ms. Allocated memory is still 287.3MB. Free memory was 225.3MB in the beginning and 220.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:47:01,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 148.9MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 668.49ms. Allocated memory is still 148.9MB. Free memory was 101.0MB in the beginning and 80.3MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.37ms. Allocated memory is still 148.9MB. Free memory was 80.3MB in the beginning and 78.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.95ms. Allocated memory is still 148.9MB. Free memory was 78.2MB in the beginning and 75.9MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 714.06ms. Allocated memory was 148.9MB in the beginning and 199.2MB in the end (delta: 50.3MB). Free memory was 75.8MB in the beginning and 160.9MB in the end (delta: -85.1MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8514.61ms. Allocated memory was 199.2MB in the beginning and 287.3MB in the end (delta: 88.1MB). Free memory was 159.8MB in the beginning and 225.3MB in the end (delta: -65.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.1GB. * Witness Printer took 100.85ms. Allocated memory is still 287.3MB. Free memory was 225.3MB in the beginning and 220.0MB 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: 778]: 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, 77 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: 8.4s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 592 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 488 mSDsluCounter, 178 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 133 mSDsCounter, 48 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1256 IncrementalHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 48 mSolverCounterUnsat, 45 mSDtfsCounter, 1256 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 93 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=356occurred in iteration=15, InterpolantAutomatonStates: 91, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 1538 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 21:47:01,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90cf9262-cf70-47a0-ba05-45cfefa1fa15/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE