./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd --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 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:24:50,154 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:24:50,253 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:24:50,261 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:24:50,261 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:24:50,296 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:24:50,296 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:24:50,296 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:24:50,297 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:24:50,297 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:24:50,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:24:50,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:24:50,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:24:50,300 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:24:50,300 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:24:50,300 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:24:50,300 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:24:50,300 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:24:50,300 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:24:50,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:24:50,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:24:50,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:24:50,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:24:50,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:24:50,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:24:50,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:24:50,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:24:50,303 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd 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 -> 99f794c04b6feffb38c1e5c415a278bf34dda5287d389b184a9a7d818ab0b70e [2024-11-13 16:24:50,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:24:50,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:24:50,627 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:24:50,628 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:24:50,628 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:24:50,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i Unable to find full path for "g++" [2024-11-13 16:24:52,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:24:52,831 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:24:52,833 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/sv-benchmarks/c/goblint-regression/06-symbeq_06-tricky_address1.i [2024-11-13 16:24:52,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/data/13b699597/8fc7ae2fdeb04caca0b7bb267df2197a/FLAGc97cab3e0 [2024-11-13 16:24:52,874 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/data/13b699597/8fc7ae2fdeb04caca0b7bb267df2197a [2024-11-13 16:24:52,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:24:52,878 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:24:52,880 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:24:52,880 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:24:52,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:24:52,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:24:52" (1/1) ... [2024-11-13 16:24:52,892 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56198836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:52, skipping insertion in model container [2024-11-13 16:24:52,892 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:24:52" (1/1) ... [2024-11-13 16:24:52,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:24:53,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:24:53,510 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:24:53,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:24:53,630 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:24:53,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53 WrapperNode [2024-11-13 16:24:53,631 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:24:53,632 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:24:53,632 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:24:53,632 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:24:53,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,691 INFO L138 Inliner]: procedures = 268, calls = 104, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 156 [2024-11-13 16:24:53,691 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:24:53,692 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:24:53,692 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:24:53,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:24:53,708 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,709 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,718 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,747 INFO L175 MemorySlicer]: Split 94 memory accesses to 1 slices as follows [94]. 100 percent of accesses are in the largest equivalence class. The 90 initializations are split as follows [90]. The 2 writes are split as follows [2]. [2024-11-13 16:24:53,748 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,775 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,777 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:24:53,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:24:53,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:24:53,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:24:53,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (1/1) ... [2024-11-13 16:24:53,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:24:53,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:53,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:24:53,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:24:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 16:24:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 16:24:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:24:53,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:24:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 16:24:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:24:53,860 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-13 16:24:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-13 16:24:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:24:53,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:24:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:24:53,862 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 16:24:54,030 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:24:54,032 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:24:54,518 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 16:24:54,518 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:24:55,319 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:24:55,320 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 16:24:55,320 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:24:55 BoogieIcfgContainer [2024-11-13 16:24:55,320 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:24:55,322 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:24:55,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:24:55,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:24:55,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:24:52" (1/3) ... [2024-11-13 16:24:55,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a28583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:24:55, skipping insertion in model container [2024-11-13 16:24:55,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:24:53" (2/3) ... [2024-11-13 16:24:55,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a28583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:24:55, skipping insertion in model container [2024-11-13 16:24:55,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:24:55" (3/3) ... [2024-11-13 16:24:55,329 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_06-tricky_address1.i [2024-11-13 16:24:55,349 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:24:55,350 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 06-symbeq_06-tricky_address1.i that has 2 procedures, 29 locations, 1 initial locations, 1 loop locations, and 9 error locations. [2024-11-13 16:24:55,350 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 16:24:55,412 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 16:24:55,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 62 flow [2024-11-13 16:24:55,480 INFO L124 PetriNetUnfolderBase]: 1/28 cut-off events. [2024-11-13 16:24:55,482 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:24:55,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 1/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 52 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 3. Up to 2 conditions per place. [2024-11-13 16:24:55,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 62 flow [2024-11-13 16:24:55,488 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 28 transitions, 59 flow [2024-11-13 16:24:55,495 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:24:55,507 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71a67e61, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:24:55,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 16:24:55,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 16:24:55,517 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2024-11-13 16:24:55,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:24:55,517 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:55,517 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:55,518 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:55,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:55,522 INFO L85 PathProgramCache]: Analyzing trace with hash -650329958, now seen corresponding path program 1 times [2024-11-13 16:24:55,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544085412] [2024-11-13 16:24:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:55,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:55,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544085412] [2024-11-13 16:24:55,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544085412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:55,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:55,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:24:55,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330108729] [2024-11-13 16:24:55,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:55,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:24:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:55,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:24:55,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:24:55,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-13 16:24:55,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:55,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:55,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-13 16:24:55,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:56,060 INFO L124 PetriNetUnfolderBase]: 43/138 cut-off events. [2024-11-13 16:24:56,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:24:56,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 138 events. 43/138 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 230. Up to 102 conditions per place. [2024-11-13 16:24:56,065 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-13 16:24:56,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 97 flow [2024-11-13 16:24:56,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:24:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:24:56,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2024-11-13 16:24:56,082 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2024-11-13 16:24:56,083 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 59 flow. Second operand 3 states and 55 transitions. [2024-11-13 16:24:56,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 97 flow [2024-11-13 16:24:56,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:24:56,093 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 70 flow [2024-11-13 16:24:56,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-13 16:24:56,101 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-11-13 16:24:56,103 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 70 flow [2024-11-13 16:24:56,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:56,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:56,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:56,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:24:56,104 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:56,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash -281229671, now seen corresponding path program 1 times [2024-11-13 16:24:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087033029] [2024-11-13 16:24:56,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:56,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087033029] [2024-11-13 16:24:56,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087033029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:56,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495888335] [2024-11-13 16:24:56,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:56,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:56,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:56,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:56,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:24:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:56,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:24:56,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:56,537 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495888335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:56,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 16:24:56,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893624642] [2024-11-13 16:24:56,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:56,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:24:56,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:56,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:24:56,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:24:56,567 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-13 16:24:56,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:56,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:56,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-13 16:24:56,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:56,720 INFO L124 PetriNetUnfolderBase]: 43/141 cut-off events. [2024-11-13 16:24:56,720 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 16:24:56,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 141 events. 43/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 533 event pairs, 42 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 249. Up to 102 conditions per place. [2024-11-13 16:24:56,722 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2024-11-13 16:24:56,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 124 flow [2024-11-13 16:24:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:24:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 16:24:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-11-13 16:24:56,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2024-11-13 16:24:56,725 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 70 flow. Second operand 6 states and 96 transitions. [2024-11-13 16:24:56,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 124 flow [2024-11-13 16:24:56,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 120 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 16:24:56,728 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 102 flow [2024-11-13 16:24:56,729 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=102, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-11-13 16:24:56,730 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-11-13 16:24:56,730 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 102 flow [2024-11-13 16:24:56,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:56,730 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:56,731 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:56,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 16:24:56,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 16:24:56,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:56,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:56,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1544407130, now seen corresponding path program 2 times [2024-11-13 16:24:56,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:56,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516682657] [2024-11-13 16:24:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:56,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:57,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 16:24:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516682657] [2024-11-13 16:24:57,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516682657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:57,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:57,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:24:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547203999] [2024-11-13 16:24:57,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:57,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:24:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:57,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:24:57,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:24:57,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-13 16:24:57,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:57,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:57,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-13 16:24:57,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:57,406 INFO L124 PetriNetUnfolderBase]: 43/137 cut-off events. [2024-11-13 16:24:57,406 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 16:24:57,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 137 events. 43/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 42 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 236. Up to 105 conditions per place. [2024-11-13 16:24:57,408 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 20 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2024-11-13 16:24:57,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 140 flow [2024-11-13 16:24:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:24:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:24:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-13 16:24:57,411 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-13 16:24:57,411 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 102 flow. Second operand 3 states and 49 transitions. [2024-11-13 16:24:57,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 140 flow [2024-11-13 16:24:57,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 30 transitions, 126 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 16:24:57,415 INFO L231 Difference]: Finished difference. Result has 39 places, 30 transitions, 86 flow [2024-11-13 16:24:57,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=39, PETRI_TRANSITIONS=30} [2024-11-13 16:24:57,418 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-11-13 16:24:57,419 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 30 transitions, 86 flow [2024-11-13 16:24:57,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:57,419 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:57,419 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:57,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:24:57,420 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:57,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:57,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1544407131, now seen corresponding path program 1 times [2024-11-13 16:24:57,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:57,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548249659] [2024-11-13 16:24:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:57,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:57,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548249659] [2024-11-13 16:24:57,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548249659] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:57,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833285121] [2024-11-13 16:24:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:57,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:24:57,788 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:24:57,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:24:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:57,955 INFO L255 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:24:57,957 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:57,994 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:24:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:24:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833285121] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:24:58,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:24:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-13 16:24:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007617633] [2024-11-13 16:24:58,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:24:58,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:24:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:24:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:24:58,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 29 [2024-11-13 16:24:58,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 86 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:58,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:58,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 29 [2024-11-13 16:24:58,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:58,219 INFO L124 PetriNetUnfolderBase]: 43/143 cut-off events. [2024-11-13 16:24:58,219 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-13 16:24:58,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 143 events. 43/143 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 503 event pairs, 42 based on Foata normal form. 6/140 useless extension candidates. Maximal degree in co-relation 276. Up to 102 conditions per place. [2024-11-13 16:24:58,221 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 16 selfloop transitions, 11 changer transitions 0/36 dead transitions. [2024-11-13 16:24:58,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 176 flow [2024-11-13 16:24:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:24:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 16:24:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-11-13 16:24:58,223 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-11-13 16:24:58,223 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 86 flow. Second operand 12 states and 177 transitions. [2024-11-13 16:24:58,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 176 flow [2024-11-13 16:24:58,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 16:24:58,227 INFO L231 Difference]: Finished difference. Result has 55 places, 36 transitions, 169 flow [2024-11-13 16:24:58,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=36} [2024-11-13 16:24:58,228 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-11-13 16:24:58,229 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 36 transitions, 169 flow [2024-11-13 16:24:58,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:58,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:58,229 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:58,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:24:58,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:24:58,430 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:58,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:58,430 INFO L85 PathProgramCache]: Analyzing trace with hash 105369595, now seen corresponding path program 2 times [2024-11-13 16:24:58,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:58,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746000405] [2024-11-13 16:24:58,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:58,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:58,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:24:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746000405] [2024-11-13 16:24:58,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746000405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:58,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:58,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:24:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705211661] [2024-11-13 16:24:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:58,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:24:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:24:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:24:58,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-13 16:24:58,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 36 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:58,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:58,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-13 16:24:58,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:58,937 INFO L124 PetriNetUnfolderBase]: 43/139 cut-off events. [2024-11-13 16:24:58,937 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-13 16:24:58,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 139 events. 43/139 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 462 event pairs, 36 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 295. Up to 86 conditions per place. [2024-11-13 16:24:58,939 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 27 selfloop transitions, 3 changer transitions 3/40 dead transitions. [2024-11-13 16:24:58,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 40 transitions, 243 flow [2024-11-13 16:24:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:24:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:24:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-11-13 16:24:58,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-11-13 16:24:58,941 INFO L175 Difference]: Start difference. First operand has 55 places, 36 transitions, 169 flow. Second operand 4 states and 65 transitions. [2024-11-13 16:24:58,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 40 transitions, 243 flow [2024-11-13 16:24:58,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 195 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-13 16:24:58,953 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 123 flow [2024-11-13 16:24:58,953 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2024-11-13 16:24:58,954 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-11-13 16:24:58,954 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 123 flow [2024-11-13 16:24:58,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:58,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:58,956 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:58,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 16:24:58,956 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:58,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash 106202004, now seen corresponding path program 1 times [2024-11-13 16:24:58,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:58,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218970186] [2024-11-13 16:24:58,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:58,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:59,130 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:24:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218970186] [2024-11-13 16:24:59,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218970186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:59,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:59,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:24:59,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707424510] [2024-11-13 16:24:59,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:59,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:24:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:24:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:24:59,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-11-13 16:24:59,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:59,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:59,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-11-13 16:24:59,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:59,263 INFO L124 PetriNetUnfolderBase]: 43/137 cut-off events. [2024-11-13 16:24:59,263 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2024-11-13 16:24:59,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 137 events. 43/137 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 463 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 278. Up to 90 conditions per place. [2024-11-13 16:24:59,265 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 32 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-13 16:24:59,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 39 transitions, 203 flow [2024-11-13 16:24:59,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:24:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:24:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-13 16:24:59,269 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 16:24:59,269 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 123 flow. Second operand 4 states and 58 transitions. [2024-11-13 16:24:59,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 39 transitions, 203 flow [2024-11-13 16:24:59,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 195 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 16:24:59,275 INFO L231 Difference]: Finished difference. Result has 49 places, 32 transitions, 117 flow [2024-11-13 16:24:59,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=49, PETRI_TRANSITIONS=32} [2024-11-13 16:24:59,276 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-11-13 16:24:59,276 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 32 transitions, 117 flow [2024-11-13 16:24:59,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:59,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:59,276 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:59,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 16:24:59,277 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:59,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:59,277 INFO L85 PathProgramCache]: Analyzing trace with hash 106202005, now seen corresponding path program 1 times [2024-11-13 16:24:59,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:59,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963943979] [2024-11-13 16:24:59,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:59,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:24:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963943979] [2024-11-13 16:24:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963943979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:59,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:59,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:24:59,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170469802] [2024-11-13 16:24:59,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:59,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:24:59,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:59,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:24:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:24:59,685 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 29 [2024-11-13 16:24:59,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 32 transitions, 117 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:59,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:59,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 29 [2024-11-13 16:24:59,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:59,813 INFO L124 PetriNetUnfolderBase]: 43/122 cut-off events. [2024-11-13 16:24:59,813 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-11-13 16:24:59,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 122 events. 43/122 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 325 event pairs, 25 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 263. Up to 90 conditions per place. [2024-11-13 16:24:59,815 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 30 selfloop transitions, 2 changer transitions 2/37 dead transitions. [2024-11-13 16:24:59,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 37 transitions, 195 flow [2024-11-13 16:24:59,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:24:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 16:24:59,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 66 transitions. [2024-11-13 16:24:59,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5689655172413793 [2024-11-13 16:24:59,816 INFO L175 Difference]: Start difference. First operand has 49 places, 32 transitions, 117 flow. Second operand 4 states and 66 transitions. [2024-11-13 16:24:59,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 37 transitions, 195 flow [2024-11-13 16:24:59,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 37 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:24:59,819 INFO L231 Difference]: Finished difference. Result has 48 places, 29 transitions, 112 flow [2024-11-13 16:24:59,819 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=29} [2024-11-13 16:24:59,819 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-11-13 16:24:59,819 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 29 transitions, 112 flow [2024-11-13 16:24:59,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:59,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 16:24:59,820 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:24:59,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 16:24:59,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 16:24:59,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:24:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -27888822, now seen corresponding path program 1 times [2024-11-13 16:24:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:24:59,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063004218] [2024-11-13 16:24:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:59,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:24:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:59,904 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-13 16:24:59,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:24:59,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063004218] [2024-11-13 16:24:59,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063004218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:24:59,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:24:59,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 16:24:59,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634249137] [2024-11-13 16:24:59,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:24:59,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:24:59,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:24:59,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:24:59,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:24:59,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-11-13 16:24:59,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 29 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:24:59,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 16:24:59,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-11-13 16:24:59,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 16:24:59,996 INFO L124 PetriNetUnfolderBase]: 37/104 cut-off events. [2024-11-13 16:24:59,996 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2024-11-13 16:24:59,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 104 events. 37/104 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 36 based on Foata normal form. 7/110 useless extension candidates. Maximal degree in co-relation 238. Up to 98 conditions per place. [2024-11-13 16:24:59,997 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 0 selfloop transitions, 0 changer transitions 28/28 dead transitions. [2024-11-13 16:24:59,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 162 flow [2024-11-13 16:24:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:24:59,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 16:24:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-13 16:25:00,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-13 16:25:00,000 INFO L175 Difference]: Start difference. First operand has 48 places, 29 transitions, 112 flow. Second operand 3 states and 50 transitions. [2024-11-13 16:25:00,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 162 flow [2024-11-13 16:25:00,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 28 transitions, 159 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 16:25:00,003 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-11-13 16:25:00,003 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-11-13 16:25:00,005 INFO L277 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-11-13 16:25:00,005 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-11-13 16:25:00,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:25:00,008 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (9 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 14 remaining) [2024-11-13 16:25:00,009 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-13 16:25:00,010 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-13 16:25:00,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 16:25:00,011 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2024-11-13 16:25:00,016 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 16:25:00,016 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 16:25:00,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 04:25:00 BasicIcfg [2024-11-13 16:25:00,022 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 16:25:00,022 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 16:25:00,022 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 16:25:00,022 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 16:25:00,023 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:24:55" (3/4) ... [2024-11-13 16:25:00,025 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 16:25:00,027 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-13 16:25:00,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 118 nodes and edges [2024-11-13 16:25:00,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 16:25:00,032 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 16:25:00,116 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 16:25:00,116 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 16:25:00,116 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 16:25:00,117 INFO L158 Benchmark]: Toolchain (without parser) took 7238.87ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 90.7MB in the beginning and 82.3MB in the end (delta: 8.4MB). Peak memory consumption was 88.9MB. Max. memory is 16.1GB. [2024-11-13 16:25:00,117 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 83.9MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:25:00,118 INFO L158 Benchmark]: CACSL2BoogieTranslator took 751.56ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 60.2MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 16:25:00,119 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.26ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 57.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:25:00,119 INFO L158 Benchmark]: Boogie Preprocessor took 90.70ms. Allocated memory is still 117.4MB. Free memory was 57.3MB in the beginning and 54.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:25:00,120 INFO L158 Benchmark]: RCFGBuilder took 1537.09ms. Allocated memory is still 117.4MB. Free memory was 54.9MB in the beginning and 33.6MB in the end (delta: 21.3MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2024-11-13 16:25:00,121 INFO L158 Benchmark]: TraceAbstraction took 4699.34ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 32.8MB in the beginning and 86.5MB in the end (delta: -53.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. [2024-11-13 16:25:00,121 INFO L158 Benchmark]: Witness Printer took 93.96ms. Allocated memory is still 201.3MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:25:00,122 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 83.9MB. Free memory is still 42.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 751.56ms. Allocated memory is still 117.4MB. Free memory was 90.2MB in the beginning and 60.2MB in the end (delta: 30.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.26ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 57.3MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 90.70ms. Allocated memory is still 117.4MB. Free memory was 57.3MB in the beginning and 54.9MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1537.09ms. Allocated memory is still 117.4MB. Free memory was 54.9MB in the beginning and 33.6MB in the end (delta: 21.3MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. * TraceAbstraction took 4699.34ms. Allocated memory was 117.4MB in the beginning and 201.3MB in the end (delta: 83.9MB). Free memory was 32.8MB in the beginning and 86.5MB in the end (delta: -53.7MB). Peak memory consumption was 30.1MB. Max. memory is 16.1GB. * Witness Printer took 93.96ms. Allocated memory is still 201.3MB. Free memory was 86.5MB in the beginning and 82.3MB in the end (delta: 4.2MB). There was no memory consumed. 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: 935]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 42 locations, 14 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: 4.6s, OverallIterations: 8, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 148 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 359 IncrementalHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 12 mSDtfsCounter, 359 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=4, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 525 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 230/263 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 16:25:00,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d99570ee-2599-4679-a041-c642a78cfef1/bin/uautomizer-verify-qhAvR1uOyd/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