./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:08:13,837 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:08:13,930 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-24 19:08:13,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:08:13,934 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:08:13,953 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:08:13,955 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:08:13,956 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:08:13,956 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:08:13,958 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:08:13,958 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:08:13,958 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:08:13,959 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:08:13,959 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:08:13,959 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:08:13,959 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:08:13,960 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:08:13,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:08:13,960 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:08:13,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:08:13,961 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:08:13,961 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:08:13,961 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:08:13,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:08:13,962 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:08:13,962 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:08:13,962 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:08:13,963 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:08:13,963 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:08:13,963 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:08:13,963 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:08:13,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:08:13,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:08:13,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:13,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:08:13,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:08:13,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 19:08:13,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 19:08:13,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:08:13,966 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:08:13,967 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:08:13,967 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:08:13,967 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2024-10-24 19:08:14,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:08:14,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:08:14,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:08:14,240 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:08:14,241 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:08:14,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-10-24 19:08:15,670 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:08:15,970 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:08:15,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-10-24 19:08:15,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d56193a/3a2465388f874ce5af0ccce49d7547d1/FLAGab59c61b8 [2024-10-24 19:08:16,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d56193a/3a2465388f874ce5af0ccce49d7547d1 [2024-10-24 19:08:16,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:08:16,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:08:16,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:16,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:08:16,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:08:16,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:16" (1/1) ... [2024-10-24 19:08:16,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3d37a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:16, skipping insertion in model container [2024-10-24 19:08:16,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:16" (1/1) ... [2024-10-24 19:08:16,313 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:08:16,882 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:16,895 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:08:16,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:17,022 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:08:17,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17 WrapperNode [2024-10-24 19:08:17,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:17,023 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:17,023 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:08:17,023 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:08:17,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,082 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 89 [2024-10-24 19:08:17,083 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:17,083 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:08:17,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:08:17,084 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:08:17,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,115 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [5, 5, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 5, 0]. The 12 writes are split as follows [0, 0, 12]. [2024-10-24 19:08:17,116 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,116 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,134 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,137 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:08:17,138 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:08:17,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:08:17,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:08:17,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (1/1) ... [2024-10-24 19:08:17,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:17,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:08:17,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:08:17,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:08:17,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 19:08:17,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 19:08:17,229 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 19:08:17,229 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 19:08:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 19:08:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 19:08:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 19:08:17,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:08:17,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:08:17,233 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:08:17,404 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:08:17,406 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:08:17,765 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:08:17,765 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:08:17,945 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:08:17,946 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 19:08:17,947 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:17 BoogieIcfgContainer [2024-10-24 19:08:17,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:08:17,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:08:17,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:08:17,955 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:08:17,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:08:16" (1/3) ... [2024-10-24 19:08:17,957 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f603566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:17, skipping insertion in model container [2024-10-24 19:08:17,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:17" (2/3) ... [2024-10-24 19:08:17,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f603566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:17, skipping insertion in model container [2024-10-24 19:08:17,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:17" (3/3) ... [2024-10-24 19:08:17,961 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2024-10-24 19:08:17,976 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:08:17,976 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2024-10-24 19:08:17,976 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:08:18,048 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 19:08:18,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 170 flow [2024-10-24 19:08:18,115 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-10-24 19:08:18,115 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:18,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-10-24 19:08:18,117 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 170 flow [2024-10-24 19:08:18,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 167 flow [2024-10-24 19:08:18,129 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:08:18,135 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;@47951884, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:08:18,136 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-10-24 19:08:18,138 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:08:18,139 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-10-24 19:08:18,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:18,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:18,140 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:08:18,140 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:18,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:18,145 INFO L85 PathProgramCache]: Analyzing trace with hash 11284, now seen corresponding path program 1 times [2024-10-24 19:08:18,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555703667] [2024-10-24 19:08:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:18,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555703667] [2024-10-24 19:08:18,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555703667] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:18,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:18,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:08:18,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753412115] [2024-10-24 19:08:18,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:18,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:18,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:18,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:18,589 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-10-24 19:08:18,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:18,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:18,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-10-24 19:08:18,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:18,788 INFO L124 PetriNetUnfolderBase]: 99/370 cut-off events. [2024-10-24 19:08:18,788 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:18,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 370 events. 99/370 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1819 event pairs, 99 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 564. Up to 223 conditions per place. [2024-10-24 19:08:18,798 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 28 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-10-24 19:08:18,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 215 flow [2024-10-24 19:08:18,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:18,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:18,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-24 19:08:18,812 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-10-24 19:08:18,814 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 167 flow. Second operand 3 states and 169 transitions. [2024-10-24 19:08:18,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 215 flow [2024-10-24 19:08:18,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:18,823 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 158 flow [2024-10-24 19:08:18,826 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-10-24 19:08:18,829 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2024-10-24 19:08:18,830 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 158 flow [2024-10-24 19:08:18,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:18,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:18,831 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:08:18,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 19:08:18,832 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:18,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 11285, now seen corresponding path program 1 times [2024-10-24 19:08:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:18,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014863912] [2024-10-24 19:08:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:18,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014863912] [2024-10-24 19:08:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014863912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:19,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:19,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:08:19,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699262957] [2024-10-24 19:08:19,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:19,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:19,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:19,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:19,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:19,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-10-24 19:08:19,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:19,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:19,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-10-24 19:08:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:19,250 INFO L124 PetriNetUnfolderBase]: 99/362 cut-off events. [2024-10-24 19:08:19,250 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:08:19,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 362 events. 99/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1810 event pairs, 99 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 572. Up to 223 conditions per place. [2024-10-24 19:08:19,255 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 24 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-24 19:08:19,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 198 flow [2024-10-24 19:08:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:19,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-24 19:08:19,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-10-24 19:08:19,260 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-10-24 19:08:19,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 198 flow [2024-10-24 19:08:19,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:19,262 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 142 flow [2024-10-24 19:08:19,263 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-24 19:08:19,263 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2024-10-24 19:08:19,266 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 142 flow [2024-10-24 19:08:19,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:19,266 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:19,266 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:08:19,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 19:08:19,267 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:19,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:19,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1840858293, now seen corresponding path program 1 times [2024-10-24 19:08:19,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:19,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315311539] [2024-10-24 19:08:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:19,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:19,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315311539] [2024-10-24 19:08:19,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315311539] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:19,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:08:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202829736] [2024-10-24 19:08:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:19,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:08:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:08:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:08:19,523 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2024-10-24 19:08:19,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:19,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:19,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2024-10-24 19:08:19,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:19,670 INFO L124 PetriNetUnfolderBase]: 110/392 cut-off events. [2024-10-24 19:08:19,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:19,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 392 events. 110/392 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1982 event pairs, 110 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 626. Up to 249 conditions per place. [2024-10-24 19:08:19,676 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 31 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-10-24 19:08:19,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 202 flow [2024-10-24 19:08:19,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:08:19,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:08:19,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-10-24 19:08:19,680 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5783132530120482 [2024-10-24 19:08:19,680 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 142 flow. Second operand 4 states and 192 transitions. [2024-10-24 19:08:19,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 202 flow [2024-10-24 19:08:19,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:19,683 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 132 flow [2024-10-24 19:08:19,684 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-10-24 19:08:19,685 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2024-10-24 19:08:19,685 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 132 flow [2024-10-24 19:08:19,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:19,685 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:19,686 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:08:19,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 19:08:19,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:19,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1840858294, now seen corresponding path program 1 times [2024-10-24 19:08:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:19,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392589765] [2024-10-24 19:08:19,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:19,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:19,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:19,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:19,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392589765] [2024-10-24 19:08:19,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392589765] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:19,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:19,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:08:19,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2949394] [2024-10-24 19:08:19,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:19,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:08:19,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:19,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:08:19,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:08:20,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-10-24 19:08:20,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:20,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:20,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-10-24 19:08:20,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:20,167 INFO L124 PetriNetUnfolderBase]: 110/387 cut-off events. [2024-10-24 19:08:20,167 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:08:20,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 387 events. 110/387 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1977 event pairs, 110 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 630. Up to 247 conditions per place. [2024-10-24 19:08:20,171 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 27 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-10-24 19:08:20,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 184 flow [2024-10-24 19:08:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:08:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:08:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-10-24 19:08:20,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-10-24 19:08:20,176 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 132 flow. Second operand 4 states and 236 transitions. [2024-10-24 19:08:20,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 184 flow [2024-10-24 19:08:20,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:20,178 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 127 flow [2024-10-24 19:08:20,179 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-10-24 19:08:20,180 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2024-10-24 19:08:20,180 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 127 flow [2024-10-24 19:08:20,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:20,180 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:20,181 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:20,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 19:08:20,181 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:20,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:20,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1865543333, now seen corresponding path program 1 times [2024-10-24 19:08:20,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:20,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813495814] [2024-10-24 19:08:20,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:20,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:20,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:20,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:20,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813495814] [2024-10-24 19:08:20,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813495814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:20,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:20,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:08:20,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803875473] [2024-10-24 19:08:20,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:20,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:08:20,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:20,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:08:20,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:08:20,459 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-10-24 19:08:20,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:20,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:20,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-10-24 19:08:20,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:20,546 INFO L124 PetriNetUnfolderBase]: 110/357 cut-off events. [2024-10-24 19:08:20,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:20,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 357 events. 110/357 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1692 event pairs, 110 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 602. Up to 248 conditions per place. [2024-10-24 19:08:20,548 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-24 19:08:20,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 187 flow [2024-10-24 19:08:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-24 19:08:20,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-10-24 19:08:20,550 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 127 flow. Second operand 3 states and 177 transitions. [2024-10-24 19:08:20,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 187 flow [2024-10-24 19:08:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:20,551 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 120 flow [2024-10-24 19:08:20,551 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-24 19:08:20,552 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2024-10-24 19:08:20,552 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 120 flow [2024-10-24 19:08:20,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:20,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:20,553 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:20,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 19:08:20,553 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:20,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1865543332, now seen corresponding path program 1 times [2024-10-24 19:08:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643782632] [2024-10-24 19:08:20,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:20,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:20,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:20,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643782632] [2024-10-24 19:08:20,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643782632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:20,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:20,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 19:08:20,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440638743] [2024-10-24 19:08:20,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:20,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-24 19:08:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:20,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-24 19:08:20,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-10-24 19:08:20,943 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-10-24 19:08:20,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:20,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:20,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-10-24 19:08:20,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:21,037 INFO L124 PetriNetUnfolderBase]: 110/344 cut-off events. [2024-10-24 19:08:21,037 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:21,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 344 events. 110/344 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1577 event pairs, 110 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 590. Up to 246 conditions per place. [2024-10-24 19:08:21,040 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 31 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-24 19:08:21,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 180 flow [2024-10-24 19:08:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-24 19:08:21,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-24 19:08:21,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-10-24 19:08:21,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2024-10-24 19:08:21,041 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 120 flow. Second operand 4 states and 180 transitions. [2024-10-24 19:08:21,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 180 flow [2024-10-24 19:08:21,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:21,042 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 117 flow [2024-10-24 19:08:21,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-10-24 19:08:21,043 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2024-10-24 19:08:21,043 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 117 flow [2024-10-24 19:08:21,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:21,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:21,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:21,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 19:08:21,044 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:21,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:21,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2094825083, now seen corresponding path program 1 times [2024-10-24 19:08:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347694307] [2024-10-24 19:08:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:21,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:21,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347694307] [2024-10-24 19:08:21,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347694307] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:21,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:21,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 19:08:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577032516] [2024-10-24 19:08:21,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:21,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:08:21,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:21,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:08:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:08:22,816 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-24 19:08:22,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 35.15384615384615) internal successors, (457), 13 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:22,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:22,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-24 19:08:22,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:23,244 INFO L124 PetriNetUnfolderBase]: 167/488 cut-off events. [2024-10-24 19:08:23,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:23,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 488 events. 167/488 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2508 event pairs, 6 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 857. Up to 180 conditions per place. [2024-10-24 19:08:23,248 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 61 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-10-24 19:08:23,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 341 flow [2024-10-24 19:08:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 19:08:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 19:08:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 456 transitions. [2024-10-24 19:08:23,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4994523548740416 [2024-10-24 19:08:23,250 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 117 flow. Second operand 11 states and 456 transitions. [2024-10-24 19:08:23,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 341 flow [2024-10-24 19:08:23,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:23,255 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 171 flow [2024-10-24 19:08:23,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-10-24 19:08:23,257 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -14 predicate places. [2024-10-24 19:08:23,258 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 171 flow [2024-10-24 19:08:23,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.15384615384615) internal successors, (457), 13 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:23,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:23,258 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:23,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 19:08:23,259 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:23,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:23,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2094825082, now seen corresponding path program 1 times [2024-10-24 19:08:23,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:23,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336286876] [2024-10-24 19:08:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:23,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:24,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:24,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336286876] [2024-10-24 19:08:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336286876] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:24,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:24,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:08:24,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760231256] [2024-10-24 19:08:24,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:24,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:08:24,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:08:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:08:24,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-10-24 19:08:24,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 171 flow. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:24,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:24,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-10-24 19:08:24,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:25,028 INFO L124 PetriNetUnfolderBase]: 176/487 cut-off events. [2024-10-24 19:08:25,028 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-10-24 19:08:25,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 487 events. 176/487 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2507 event pairs, 2 based on Foata normal form. 15/445 useless extension candidates. Maximal degree in co-relation 993. Up to 247 conditions per place. [2024-10-24 19:08:25,031 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 65 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-10-24 19:08:25,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 403 flow [2024-10-24 19:08:25,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:08:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:08:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 448 transitions. [2024-10-24 19:08:25,038 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5997322623828648 [2024-10-24 19:08:25,038 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 171 flow. Second operand 9 states and 448 transitions. [2024-10-24 19:08:25,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 403 flow [2024-10-24 19:08:25,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 395 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:08:25,042 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 201 flow [2024-10-24 19:08:25,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-10-24 19:08:25,044 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-10-24 19:08:25,044 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 201 flow [2024-10-24 19:08:25,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:25,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:25,047 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:25,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 19:08:25,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:25,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2128602727, now seen corresponding path program 1 times [2024-10-24 19:08:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678634502] [2024-10-24 19:08:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:25,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:25,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:25,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678634502] [2024-10-24 19:08:25,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678634502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:25,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:25,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:08:25,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133899214] [2024-10-24 19:08:25,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:25,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:08:25,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:25,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:08:25,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:08:26,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-10-24 19:08:26,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:26,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:26,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-10-24 19:08:26,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:26,476 INFO L124 PetriNetUnfolderBase]: 166/466 cut-off events. [2024-10-24 19:08:26,476 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-10-24 19:08:26,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 466 events. 166/466 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2378 event pairs, 42 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 986. Up to 184 conditions per place. [2024-10-24 19:08:26,480 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 70 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-10-24 19:08:26,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 465 flow [2024-10-24 19:08:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:08:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:08:26,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 516 transitions. [2024-10-24 19:08:26,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6216867469879518 [2024-10-24 19:08:26,482 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 201 flow. Second operand 10 states and 516 transitions. [2024-10-24 19:08:26,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 465 flow [2024-10-24 19:08:26,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 452 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-10-24 19:08:26,485 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 244 flow [2024-10-24 19:08:26,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-10-24 19:08:26,486 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-24 19:08:26,486 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 244 flow [2024-10-24 19:08:26,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:26,487 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:26,487 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:26,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 19:08:26,488 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:26,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:26,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1460892621, now seen corresponding path program 1 times [2024-10-24 19:08:26,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:26,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664869677] [2024-10-24 19:08:26,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:26,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:26,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664869677] [2024-10-24 19:08:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664869677] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:08:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971134691] [2024-10-24 19:08:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:26,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:26,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 83 [2024-10-24 19:08:26,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:26,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 83 [2024-10-24 19:08:26,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:26,698 INFO L124 PetriNetUnfolderBase]: 105/347 cut-off events. [2024-10-24 19:08:26,699 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-10-24 19:08:26,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 347 events. 105/347 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1757 event pairs, 43 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 750. Up to 174 conditions per place. [2024-10-24 19:08:26,701 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 48 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-10-24 19:08:26,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 390 flow [2024-10-24 19:08:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:26,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-10-24 19:08:26,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2024-10-24 19:08:26,703 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 244 flow. Second operand 3 states and 213 transitions. [2024-10-24 19:08:26,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 390 flow [2024-10-24 19:08:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 356 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-10-24 19:08:26,705 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 226 flow [2024-10-24 19:08:26,706 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-10-24 19:08:26,706 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2024-10-24 19:08:26,706 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 226 flow [2024-10-24 19:08:26,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:26,707 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:26,707 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:26,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 19:08:26,707 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:26,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:26,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1711614886, now seen corresponding path program 1 times [2024-10-24 19:08:26,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:26,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261389504] [2024-10-24 19:08:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:26,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:26,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:26,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:26,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261389504] [2024-10-24 19:08:26,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261389504] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:26,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:26,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:08:26,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950288423] [2024-10-24 19:08:26,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:26,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:08:26,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:26,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:08:26,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:08:27,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-10-24 19:08:27,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:27,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:27,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-10-24 19:08:27,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:27,174 INFO L124 PetriNetUnfolderBase]: 140/446 cut-off events. [2024-10-24 19:08:27,175 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-10-24 19:08:27,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 446 events. 140/446 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2392 event pairs, 14 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 987. Up to 183 conditions per place. [2024-10-24 19:08:27,178 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 58 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-10-24 19:08:27,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 449 flow [2024-10-24 19:08:27,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:08:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:08:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2024-10-24 19:08:27,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7349397590361446 [2024-10-24 19:08:27,181 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 226 flow. Second operand 5 states and 305 transitions. [2024-10-24 19:08:27,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 449 flow [2024-10-24 19:08:27,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:27,186 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 273 flow [2024-10-24 19:08:27,187 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-10-24 19:08:27,187 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-24 19:08:27,187 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 273 flow [2024-10-24 19:08:27,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:27,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:27,188 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:27,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 19:08:27,188 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:27,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:27,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1711614887, now seen corresponding path program 1 times [2024-10-24 19:08:27,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:27,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242019889] [2024-10-24 19:08:27,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:27,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:27,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:27,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:27,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242019889] [2024-10-24 19:08:27,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242019889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:27,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:27,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 19:08:27,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946853371] [2024-10-24 19:08:27,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:27,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 19:08:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:27,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 19:08:27,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-24 19:08:27,483 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-10-24 19:08:27,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:27,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:27,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-10-24 19:08:27,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:27,640 INFO L124 PetriNetUnfolderBase]: 140/436 cut-off events. [2024-10-24 19:08:27,640 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-10-24 19:08:27,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 436 events. 140/436 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2274 event pairs, 58 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 1048. Up to 191 conditions per place. [2024-10-24 19:08:27,643 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 48 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-10-24 19:08:27,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 463 flow [2024-10-24 19:08:27,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 19:08:27,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 19:08:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-10-24 19:08:27,645 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2024-10-24 19:08:27,646 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 273 flow. Second operand 6 states and 303 transitions. [2024-10-24 19:08:27,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 463 flow [2024-10-24 19:08:27,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 19:08:27,650 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 349 flow [2024-10-24 19:08:27,650 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-10-24 19:08:27,651 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2024-10-24 19:08:27,652 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 349 flow [2024-10-24 19:08:27,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:27,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:27,653 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:27,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 19:08:27,653 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:27,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:27,654 INFO L85 PathProgramCache]: Analyzing trace with hash -38564856, now seen corresponding path program 1 times [2024-10-24 19:08:27,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:27,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735032708] [2024-10-24 19:08:27,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:27,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:28,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:28,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735032708] [2024-10-24 19:08:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735032708] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 19:08:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146152275] [2024-10-24 19:08:28,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:28,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 19:08:28,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 19:08:28,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-10-24 19:08:29,185 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-24 19:08:29,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 34.5) internal successors, (483), 14 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:29,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:29,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-24 19:08:29,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:30,023 INFO L124 PetriNetUnfolderBase]: 167/474 cut-off events. [2024-10-24 19:08:30,024 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2024-10-24 19:08:30,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 474 events. 167/474 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2446 event pairs, 12 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 1365. Up to 76 conditions per place. [2024-10-24 19:08:30,029 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 73 selfloop transitions, 49 changer transitions 2/137 dead transitions. [2024-10-24 19:08:30,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 137 transitions, 893 flow [2024-10-24 19:08:30,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 19:08:30,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-10-24 19:08:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 834 transitions. [2024-10-24 19:08:30,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45673603504928806 [2024-10-24 19:08:30,032 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 349 flow. Second operand 22 states and 834 transitions. [2024-10-24 19:08:30,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 137 transitions, 893 flow [2024-10-24 19:08:30,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 137 transitions, 856 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-10-24 19:08:30,038 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 550 flow [2024-10-24 19:08:30,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=550, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2024-10-24 19:08:30,039 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2024-10-24 19:08:30,039 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 550 flow [2024-10-24 19:08:30,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 34.5) internal successors, (483), 14 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:30,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:30,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:30,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-24 19:08:30,041 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:30,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash 2004021681, now seen corresponding path program 1 times [2024-10-24 19:08:30,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:30,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915517780] [2024-10-24 19:08:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:30,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:30,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915517780] [2024-10-24 19:08:30,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915517780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:30,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:30,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 19:08:30,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477642494] [2024-10-24 19:08:30,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:30,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:08:30,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:30,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:08:30,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:08:31,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-10-24 19:08:31,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 550 flow. Second operand has 13 states, 13 states have (on average 36.61538461538461) internal successors, (476), 13 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:31,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:31,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-10-24 19:08:31,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:31,573 INFO L124 PetriNetUnfolderBase]: 147/453 cut-off events. [2024-10-24 19:08:31,574 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-10-24 19:08:31,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 453 events. 147/453 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2412 event pairs, 27 based on Foata normal form. 6/443 useless extension candidates. Maximal degree in co-relation 1380. Up to 72 conditions per place. [2024-10-24 19:08:31,577 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 62 selfloop transitions, 40 changer transitions 0/117 dead transitions. [2024-10-24 19:08:31,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 846 flow [2024-10-24 19:08:31,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:08:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:08:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-10-24 19:08:31,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.501004016064257 [2024-10-24 19:08:31,580 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 550 flow. Second operand 12 states and 499 transitions. [2024-10-24 19:08:31,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 846 flow [2024-10-24 19:08:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 117 transitions, 797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-10-24 19:08:31,588 INFO L231 Difference]: Finished difference. Result has 112 places, 88 transitions, 602 flow [2024-10-24 19:08:31,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=602, PETRI_PLACES=112, PETRI_TRANSITIONS=88} [2024-10-24 19:08:31,591 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2024-10-24 19:08:31,591 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 88 transitions, 602 flow [2024-10-24 19:08:31,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.61538461538461) internal successors, (476), 13 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:31,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:31,592 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:31,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 19:08:31,592 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:31,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1245081057, now seen corresponding path program 1 times [2024-10-24 19:08:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:31,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349429080] [2024-10-24 19:08:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:32,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349429080] [2024-10-24 19:08:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349429080] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:32,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 19:08:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616242328] [2024-10-24 19:08:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:32,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:08:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:32,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:08:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:08:32,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-24 19:08:32,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 88 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:32,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:32,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-24 19:08:32,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:33,385 INFO L124 PetriNetUnfolderBase]: 185/545 cut-off events. [2024-10-24 19:08:33,386 INFO L125 PetriNetUnfolderBase]: For 1222/1222 co-relation queries the response was YES. [2024-10-24 19:08:33,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 545 events. 185/545 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3026 event pairs, 17 based on Foata normal form. 31/574 useless extension candidates. Maximal degree in co-relation 1767. Up to 97 conditions per place. [2024-10-24 19:08:33,390 INFO L140 encePairwiseOnDemand]: 66/83 looper letters, 98 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-10-24 19:08:33,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1183 flow [2024-10-24 19:08:33,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:08:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:08:33,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 658 transitions. [2024-10-24 19:08:33,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4954819277108434 [2024-10-24 19:08:33,395 INFO L175 Difference]: Start difference. First operand has 112 places, 88 transitions, 602 flow. Second operand 16 states and 658 transitions. [2024-10-24 19:08:33,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1183 flow [2024-10-24 19:08:33,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 1067 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-10-24 19:08:33,402 INFO L231 Difference]: Finished difference. Result has 116 places, 95 transitions, 687 flow [2024-10-24 19:08:33,402 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=687, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2024-10-24 19:08:33,403 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2024-10-24 19:08:33,404 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 687 flow [2024-10-24 19:08:33,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:33,404 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:33,404 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:33,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 19:08:33,404 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:33,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:33,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1245081056, now seen corresponding path program 1 times [2024-10-24 19:08:33,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:33,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928745619] [2024-10-24 19:08:33,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:34,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:34,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 19:08:34,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928745619] [2024-10-24 19:08:34,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928745619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:34,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:34,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 19:08:34,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746486771] [2024-10-24 19:08:34,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:34,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 19:08:34,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 19:08:34,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 19:08:34,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-24 19:08:34,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-24 19:08:34,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 687 flow. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:34,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:34,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-24 19:08:34,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:35,502 INFO L124 PetriNetUnfolderBase]: 201/525 cut-off events. [2024-10-24 19:08:35,502 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-10-24 19:08:35,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 525 events. 201/525 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2677 event pairs, 20 based on Foata normal form. 25/548 useless extension candidates. Maximal degree in co-relation 1859. Up to 168 conditions per place. [2024-10-24 19:08:35,506 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 87 selfloop transitions, 30 changer transitions 11/136 dead transitions. [2024-10-24 19:08:35,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1143 flow [2024-10-24 19:08:35,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-24 19:08:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-24 19:08:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 608 transitions. [2024-10-24 19:08:35,508 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4578313253012048 [2024-10-24 19:08:35,509 INFO L175 Difference]: Start difference. First operand has 116 places, 95 transitions, 687 flow. Second operand 16 states and 608 transitions. [2024-10-24 19:08:35,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1143 flow [2024-10-24 19:08:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 136 transitions, 1114 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-24 19:08:35,516 INFO L231 Difference]: Finished difference. Result has 121 places, 85 transitions, 619 flow [2024-10-24 19:08:35,517 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=619, PETRI_PLACES=121, PETRI_TRANSITIONS=85} [2024-10-24 19:08:35,517 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 35 predicate places. [2024-10-24 19:08:35,517 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 85 transitions, 619 flow [2024-10-24 19:08:35,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:35,518 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:35,518 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:35,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 19:08:35,519 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:35,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:35,520 INFO L85 PathProgramCache]: Analyzing trace with hash -866987548, now seen corresponding path program 1 times [2024-10-24 19:08:35,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 19:08:35,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685666383] [2024-10-24 19:08:35,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:35,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 19:08:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:08:35,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 19:08:35,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 19:08:35,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 19:08:35,623 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 19:08:35,624 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (53 of 54 remaining) [2024-10-24 19:08:35,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 54 remaining) [2024-10-24 19:08:35,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 54 remaining) [2024-10-24 19:08:35,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 54 remaining) [2024-10-24 19:08:35,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 54 remaining) [2024-10-24 19:08:35,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 54 remaining) [2024-10-24 19:08:35,629 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 54 remaining) [2024-10-24 19:08:35,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 54 remaining) [2024-10-24 19:08:35,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 54 remaining) [2024-10-24 19:08:35,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 54 remaining) [2024-10-24 19:08:35,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 54 remaining) [2024-10-24 19:08:35,633 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 54 remaining) [2024-10-24 19:08:35,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 19:08:35,633 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:35,687 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-24 19:08:35,687 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-24 19:08:35,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:08:35 BasicIcfg [2024-10-24 19:08:35,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-24 19:08:35,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-24 19:08:35,694 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-24 19:08:35,694 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-24 19:08:35,694 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:17" (3/4) ... [2024-10-24 19:08:35,696 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-24 19:08:35,697 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-24 19:08:35,698 INFO L158 Benchmark]: Toolchain (without parser) took 19448.87ms. Allocated memory was 161.5MB in the beginning and 388.0MB in the end (delta: 226.5MB). Free memory was 92.6MB in the beginning and 188.8MB in the end (delta: -96.2MB). Peak memory consumption was 131.9MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,698 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:08:35,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 772.30ms. Allocated memory is still 161.5MB. Free memory was 92.6MB in the beginning and 105.7MB in the end (delta: -13.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.64ms. Allocated memory is still 161.5MB. Free memory was 105.7MB in the beginning and 102.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,699 INFO L158 Benchmark]: Boogie Preprocessor took 54.01ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 99.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,699 INFO L158 Benchmark]: RCFGBuilder took 809.21ms. Allocated memory is still 161.5MB. Free memory was 99.4MB in the beginning and 51.2MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,699 INFO L158 Benchmark]: TraceAbstraction took 17742.68ms. Allocated memory was 161.5MB in the beginning and 388.0MB in the end (delta: 226.5MB). Free memory was 50.8MB in the beginning and 188.8MB in the end (delta: -138.0MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. [2024-10-24 19:08:35,699 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 388.0MB. Free memory is still 188.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-24 19:08:35,701 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 772.30ms. Allocated memory is still 161.5MB. Free memory was 92.6MB in the beginning and 105.7MB in the end (delta: -13.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.64ms. Allocated memory is still 161.5MB. Free memory was 105.7MB in the beginning and 102.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.01ms. Allocated memory is still 161.5MB. Free memory was 102.4MB in the beginning and 99.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 809.21ms. Allocated memory is still 161.5MB. Free memory was 99.4MB in the beginning and 51.2MB in the end (delta: 48.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 17742.68ms. Allocated memory was 161.5MB in the beginning and 388.0MB in the end (delta: 226.5MB). Free memory was 50.8MB in the beginning and 188.8MB in the end (delta: -138.0MB). Peak memory consumption was 90.6MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 388.0MB. Free memory is still 188.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}, \old(arg)={0:0}, p={-5:0}, t1=-1] [L1256] EXPR 0 A->next [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}, \old(arg)={0:0}, \result=0, p={-5:0}, t1=-1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 54 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: 17.6s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4882 SdHoareTripleChecker+Valid, 8.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3934 mSDsluCounter, 2168 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1972 mSDsCounter, 330 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14077 IncrementalHoareTripleChecker+Invalid, 14407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 330 mSolverCounterUnsat, 196 mSDtfsCounter, 14077 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=15, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 3257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-24 19:08:35,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 19:08:38,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 19:08:38,174 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-10-24 19:08:38,178 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 19:08:38,178 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 19:08:38,212 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 19:08:38,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 19:08:38,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 19:08:38,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 19:08:38,214 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 19:08:38,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 19:08:38,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 19:08:38,216 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 19:08:38,216 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 19:08:38,216 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 19:08:38,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 19:08:38,217 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 19:08:38,217 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 19:08:38,218 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 19:08:38,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 19:08:38,218 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-24 19:08:38,219 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-24 19:08:38,219 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-24 19:08:38,220 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 19:08:38,220 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-24 19:08:38,224 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-24 19:08:38,224 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 19:08:38,225 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-24 19:08:38,225 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 19:08:38,225 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 19:08:38,226 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 19:08:38,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 19:08:38,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 19:08:38,227 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 19:08:38,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 19:08:38,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:38,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 19:08:38,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 19:08:38,235 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-24 19:08:38,235 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-24 19:08:38,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 19:08:38,236 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 19:08:38,236 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 19:08:38,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 19:08:38,236 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-24 19:08:38,237 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2024-10-24 19:08:38,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 19:08:38,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 19:08:38,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 19:08:38,580 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 19:08:38,580 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 19:08:38,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-10-24 19:08:40,155 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 19:08:40,430 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 19:08:40,430 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-10-24 19:08:40,459 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba21b459/cc336c4eb88648f2befda29612db7237/FLAG617b11a3d [2024-10-24 19:08:40,474 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cba21b459/cc336c4eb88648f2befda29612db7237 [2024-10-24 19:08:40,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 19:08:40,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 19:08:40,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:40,479 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 19:08:40,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 19:08:40,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:40" (1/1) ... [2024-10-24 19:08:40,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26678287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:40, skipping insertion in model container [2024-10-24 19:08:40,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:08:40" (1/1) ... [2024-10-24 19:08:40,547 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 19:08:41,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:41,154 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 19:08:41,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 19:08:41,320 INFO L204 MainTranslator]: Completed translation [2024-10-24 19:08:41,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41 WrapperNode [2024-10-24 19:08:41,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 19:08:41,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:41,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 19:08:41,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 19:08:41,330 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,358 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,404 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2024-10-24 19:08:41,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 19:08:41,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 19:08:41,406 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 19:08:41,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 19:08:41,416 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,421 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,435 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [5, 5, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 5, 0]. The 12 writes are split as follows [0, 0, 12]. [2024-10-24 19:08:41,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,435 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,459 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 19:08:41,469 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 19:08:41,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 19:08:41,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 19:08:41,470 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (1/1) ... [2024-10-24 19:08:41,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 19:08:41,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 19:08:41,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 19:08:41,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-24 19:08:41,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 19:08:41,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-24 19:08:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-24 19:08:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-24 19:08:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 19:08:41,539 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 19:08:41,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 19:08:41,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 19:08:41,540 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 19:08:41,701 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 19:08:41,703 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 19:08:42,208 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 19:08:42,208 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 19:08:42,401 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 19:08:42,401 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-24 19:08:42,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:42 BoogieIcfgContainer [2024-10-24 19:08:42,402 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 19:08:42,404 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 19:08:42,404 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 19:08:42,408 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 19:08:42,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:08:40" (1/3) ... [2024-10-24 19:08:42,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c1069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:42, skipping insertion in model container [2024-10-24 19:08:42,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:08:41" (2/3) ... [2024-10-24 19:08:42,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@769c1069 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:08:42, skipping insertion in model container [2024-10-24 19:08:42,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:08:42" (3/3) ... [2024-10-24 19:08:42,412 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2024-10-24 19:08:42,427 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 19:08:42,427 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2024-10-24 19:08:42,428 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 19:08:42,487 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 19:08:42,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 170 flow [2024-10-24 19:08:42,555 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-10-24 19:08:42,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:42,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-10-24 19:08:42,557 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 170 flow [2024-10-24 19:08:42,561 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 167 flow [2024-10-24 19:08:42,574 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 19:08:42,582 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;@6c52f506, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 19:08:42,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-10-24 19:08:42,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 19:08:42,586 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-10-24 19:08:42,586 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:42,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:42,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:08:42,587 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:42,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash 11348, now seen corresponding path program 1 times [2024-10-24 19:08:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672376881] [2024-10-24 19:08:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:42,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:42,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:42,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:42,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-24 19:08:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:42,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-10-24 19:08:42,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:42,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:08:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:42,813 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:42,814 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:42,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672376881] [2024-10-24 19:08:42,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672376881] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:42,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:42,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:08:42,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151243473] [2024-10-24 19:08:42,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:42,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:42,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:42,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:42,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-10-24 19:08:42,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:42,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:42,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-10-24 19:08:42,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:43,217 INFO L124 PetriNetUnfolderBase]: 99/370 cut-off events. [2024-10-24 19:08:43,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:43,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 370 events. 99/370 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1819 event pairs, 99 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 564. Up to 223 conditions per place. [2024-10-24 19:08:43,224 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 28 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-10-24 19:08:43,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 215 flow [2024-10-24 19:08:43,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:43,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-10-24 19:08:43,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-10-24 19:08:43,241 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 167 flow. Second operand 3 states and 169 transitions. [2024-10-24 19:08:43,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 215 flow [2024-10-24 19:08:43,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:43,250 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 158 flow [2024-10-24 19:08:43,252 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-10-24 19:08:43,269 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2024-10-24 19:08:43,272 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 158 flow [2024-10-24 19:08:43,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:43,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:43,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-10-24 19:08:43,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-24 19:08:43,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:43,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:43,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 11349, now seen corresponding path program 1 times [2024-10-24 19:08:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:43,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084968120] [2024-10-24 19:08:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:43,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:43,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-24 19:08:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:43,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-24 19:08:43,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:43,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:08:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:43,614 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:43,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084968120] [2024-10-24 19:08:43,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084968120] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:43,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:43,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-24 19:08:43,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146481014] [2024-10-24 19:08:43,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:43,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:43,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:43,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:43,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-10-24 19:08:43,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:43,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:43,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-10-24 19:08:43,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:43,920 INFO L124 PetriNetUnfolderBase]: 99/362 cut-off events. [2024-10-24 19:08:43,921 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:08:43,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 362 events. 99/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1810 event pairs, 99 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 572. Up to 223 conditions per place. [2024-10-24 19:08:43,924 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 24 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-10-24 19:08:43,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 198 flow [2024-10-24 19:08:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:43,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-10-24 19:08:43,926 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-10-24 19:08:43,926 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-10-24 19:08:43,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 198 flow [2024-10-24 19:08:43,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:43,928 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 142 flow [2024-10-24 19:08:43,929 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-10-24 19:08:43,929 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2024-10-24 19:08:43,930 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 142 flow [2024-10-24 19:08:43,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:43,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:43,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:08:43,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-10-24 19:08:44,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:44,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:44,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1900025205, now seen corresponding path program 1 times [2024-10-24 19:08:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:44,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990504632] [2024-10-24 19:08:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:44,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:44,139 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:44,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-24 19:08:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:44,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 19:08:44,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:44,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:08:44,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:44,252 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:44,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:44,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990504632] [2024-10-24 19:08:44,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990504632] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:44,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:44,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:08:44,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369069695] [2024-10-24 19:08:44,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:44,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:44,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:44,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:44,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:44,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-10-24 19:08:44,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:44,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:44,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-10-24 19:08:44,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:44,483 INFO L124 PetriNetUnfolderBase]: 110/392 cut-off events. [2024-10-24 19:08:44,484 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 19:08:44,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 392 events. 110/392 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1994 event pairs, 110 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 626. Up to 248 conditions per place. [2024-10-24 19:08:44,487 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 28 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-10-24 19:08:44,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 194 flow [2024-10-24 19:08:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:44,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-10-24 19:08:44,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7429718875502008 [2024-10-24 19:08:44,489 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 142 flow. Second operand 3 states and 185 transitions. [2024-10-24 19:08:44,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 194 flow [2024-10-24 19:08:44,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 19:08:44,491 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 130 flow [2024-10-24 19:08:44,491 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-10-24 19:08:44,492 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2024-10-24 19:08:44,492 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 130 flow [2024-10-24 19:08:44,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:44,493 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:44,493 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-24 19:08:44,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2024-10-24 19:08:44,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:44,694 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1900025206, now seen corresponding path program 1 times [2024-10-24 19:08:44,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:44,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322168990] [2024-10-24 19:08:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:44,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:44,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:44,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:44,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-24 19:08:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:44,812 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:08:44,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:44,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:08:44,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:44,848 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:44,848 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322168990] [2024-10-24 19:08:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322168990] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:08:44,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977997765] [2024-10-24 19:08:44,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:44,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:44,978 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-10-24 19:08:44,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:44,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:44,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-10-24 19:08:44,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:45,102 INFO L124 PetriNetUnfolderBase]: 99/352 cut-off events. [2024-10-24 19:08:45,102 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 19:08:45,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 352 events. 99/352 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1744 event pairs, 99 based on Foata normal form. 11/312 useless extension candidates. Maximal degree in co-relation 575. Up to 225 conditions per place. [2024-10-24 19:08:45,104 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 27 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-10-24 19:08:45,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 180 flow [2024-10-24 19:08:45,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:45,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:45,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-10-24 19:08:45,106 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.751004016064257 [2024-10-24 19:08:45,106 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 130 flow. Second operand 3 states and 187 transitions. [2024-10-24 19:08:45,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 180 flow [2024-10-24 19:08:45,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:45,108 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 125 flow [2024-10-24 19:08:45,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-10-24 19:08:45,109 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2024-10-24 19:08:45,109 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 125 flow [2024-10-24 19:08:45,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:45,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:45,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:45,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-24 19:08:45,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:45,310 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:45,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:45,311 INFO L85 PathProgramCache]: Analyzing trace with hash 147380253, now seen corresponding path program 1 times [2024-10-24 19:08:45,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143070250] [2024-10-24 19:08:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:45,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:45,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:45,313 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:45,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-24 19:08:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:45,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-10-24 19:08:45,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:45,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:08:45,549 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-10-24 19:08:45,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-10-24 19:08:45,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:45,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:45,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:45,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143070250] [2024-10-24 19:08:45,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143070250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:45,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:45,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:08:45,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366683697] [2024-10-24 19:08:45,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:45,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:45,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:45,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:45,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:45,676 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-10-24 19:08:45,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:45,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:45,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-10-24 19:08:45,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:45,816 INFO L124 PetriNetUnfolderBase]: 110/357 cut-off events. [2024-10-24 19:08:45,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 19:08:45,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 357 events. 110/357 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1702 event pairs, 110 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 603. Up to 246 conditions per place. [2024-10-24 19:08:45,819 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 28 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-10-24 19:08:45,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 177 flow [2024-10-24 19:08:45,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:45,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-10-24 19:08:45,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7429718875502008 [2024-10-24 19:08:45,820 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 125 flow. Second operand 3 states and 185 transitions. [2024-10-24 19:08:45,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 177 flow [2024-10-24 19:08:45,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:45,822 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 120 flow [2024-10-24 19:08:45,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-10-24 19:08:45,823 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2024-10-24 19:08:45,823 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 120 flow [2024-10-24 19:08:45,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:45,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:45,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:45,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-24 19:08:46,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:46,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:46,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:46,026 INFO L85 PathProgramCache]: Analyzing trace with hash 147380254, now seen corresponding path program 1 times [2024-10-24 19:08:46,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:46,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199259104] [2024-10-24 19:08:46,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:46,027 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:46,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:46,028 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:46,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-24 19:08:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:46,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-24 19:08:46,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:46,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:08:46,311 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-24 19:08:46,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-24 19:08:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:46,343 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:46,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199259104] [2024-10-24 19:08:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199259104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 19:08:46,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43270288] [2024-10-24 19:08:46,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:46,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:08:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:46,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:08:46,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:08:46,475 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-10-24 19:08:46,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:46,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:46,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-10-24 19:08:46,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:46,623 INFO L124 PetriNetUnfolderBase]: 99/326 cut-off events. [2024-10-24 19:08:46,623 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:46,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 560 conditions, 326 events. 99/326 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1516 event pairs, 99 based on Foata normal form. 12/308 useless extension candidates. Maximal degree in co-relation 550. Up to 223 conditions per place. [2024-10-24 19:08:46,625 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 27 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-10-24 19:08:46,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 54 transitions, 170 flow [2024-10-24 19:08:46,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:08:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:08:46,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-10-24 19:08:46,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.751004016064257 [2024-10-24 19:08:46,627 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 120 flow. Second operand 3 states and 187 transitions. [2024-10-24 19:08:46,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 54 transitions, 170 flow [2024-10-24 19:08:46,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 169 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:46,629 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 115 flow [2024-10-24 19:08:46,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-10-24 19:08:46,630 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2024-10-24 19:08:46,630 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 115 flow [2024-10-24 19:08:46,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:46,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:46,631 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:46,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2024-10-24 19:08:46,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:46,832 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:46,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1015971961, now seen corresponding path program 1 times [2024-10-24 19:08:46,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:46,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043365600] [2024-10-24 19:08:46,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:46,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:46,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:46,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:46,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2024-10-24 19:08:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:47,131 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 19:08:47,135 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:47,154 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-10-24 19:08:47,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2024-10-24 19:08:47,238 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-10-24 19:08:47,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2024-10-24 19:08:47,451 INFO L349 Elim1Store]: treesize reduction 110, result has 29.5 percent of original size [2024-10-24 19:08:47,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 82 [2024-10-24 19:08:47,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:08:47,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2024-10-24 19:08:47,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2024-10-24 19:08:47,776 INFO L349 Elim1Store]: treesize reduction 142, result has 28.6 percent of original size [2024-10-24 19:08:47,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 60 treesize of output 101 [2024-10-24 19:08:47,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-10-24 19:08:48,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-10-24 19:08:48,491 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-10-24 19:08:48,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 177 [2024-10-24 19:08:50,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:08:50,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 274 treesize of output 210 [2024-10-24 19:08:51,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:51,132 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:51,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043365600] [2024-10-24 19:08:51,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043365600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:51,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:08:51,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951255535] [2024-10-24 19:08:51,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:51,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:08:51,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:51,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:08:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:08:52,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-24 19:08:52,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 115 flow. Second operand has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:52,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:52,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-24 19:08:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:54,066 INFO L124 PetriNetUnfolderBase]: 130/435 cut-off events. [2024-10-24 19:08:54,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 19:08:54,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 435 events. 130/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2234 event pairs, 13 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 728. Up to 190 conditions per place. [2024-10-24 19:08:54,070 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 54 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2024-10-24 19:08:54,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 285 flow [2024-10-24 19:08:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 19:08:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-24 19:08:54,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 319 transitions. [2024-10-24 19:08:54,072 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48042168674698793 [2024-10-24 19:08:54,072 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 115 flow. Second operand 8 states and 319 transitions. [2024-10-24 19:08:54,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 285 flow [2024-10-24 19:08:54,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:08:54,074 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 124 flow [2024-10-24 19:08:54,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=124, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2024-10-24 19:08:54,075 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2024-10-24 19:08:54,075 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 124 flow [2024-10-24 19:08:54,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.666666666666664) internal successors, (303), 9 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:54,078 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:54,079 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:54,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2024-10-24 19:08:54,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:54,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:54,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:54,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1015971960, now seen corresponding path program 1 times [2024-10-24 19:08:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:54,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697327331] [2024-10-24 19:08:54,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:54,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:54,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:54,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2024-10-24 19:08:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:54,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-24 19:08:54,547 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:54,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:08:54,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:08:54,591 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:08:54,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:08:54,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-24 19:08:54,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:08:54,668 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-10-24 19:08:54,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2024-10-24 19:08:54,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:08:54,712 INFO L349 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2024-10-24 19:08:54,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2024-10-24 19:08:54,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:54,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-10-24 19:08:54,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:54,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-10-24 19:08:54,920 INFO L349 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2024-10-24 19:08:54,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2024-10-24 19:08:54,963 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-10-24 19:08:54,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-10-24 19:08:55,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:55,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:55,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:55,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:55,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:55,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:55,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 21 [2024-10-24 19:08:55,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-10-24 19:08:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:55,498 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:55,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697327331] [2024-10-24 19:08:55,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697327331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:55,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:55,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:08:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101917552] [2024-10-24 19:08:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:55,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:08:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:55,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:08:55,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:08:56,974 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-10-24 19:08:56,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 124 flow. Second operand has 9 states, 9 states have (on average 31.666666666666668) internal successors, (285), 9 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:56,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:08:56,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-10-24 19:08:56,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:08:58,179 INFO L124 PetriNetUnfolderBase]: 150/395 cut-off events. [2024-10-24 19:08:58,180 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-24 19:08:58,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 395 events. 150/395 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1782 event pairs, 2 based on Foata normal form. 16/360 useless extension candidates. Maximal degree in co-relation 765. Up to 183 conditions per place. [2024-10-24 19:08:58,182 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 65 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2024-10-24 19:08:58,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 90 transitions, 358 flow [2024-10-24 19:08:58,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 19:08:58,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 19:08:58,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 381 transitions. [2024-10-24 19:08:58,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45903614457831327 [2024-10-24 19:08:58,183 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 124 flow. Second operand 10 states and 381 transitions. [2024-10-24 19:08:58,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 90 transitions, 358 flow [2024-10-24 19:08:58,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 340 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-10-24 19:08:58,185 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 138 flow [2024-10-24 19:08:58,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2024-10-24 19:08:58,186 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2024-10-24 19:08:58,186 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 138 flow [2024-10-24 19:08:58,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 31.666666666666668) internal successors, (285), 9 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:08:58,187 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:08:58,187 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:08:58,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2024-10-24 19:08:58,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:58,388 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:08:58,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:08:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1049749605, now seen corresponding path program 1 times [2024-10-24 19:08:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:08:58,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516233372] [2024-10-24 19:08:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:08:58,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:08:58,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:08:58,390 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:08:58,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2024-10-24 19:08:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:08:58,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-10-24 19:08:58,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:08:58,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:08:58,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:08:58,650 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-24 19:08:58,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-24 19:08:58,669 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:08:58,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:08:58,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:08:58,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:08:58,763 INFO L349 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2024-10-24 19:08:58,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2024-10-24 19:08:58,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2024-10-24 19:08:58,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-10-24 19:08:58,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:58,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-10-24 19:08:58,917 INFO L349 Elim1Store]: treesize reduction 46, result has 27.0 percent of original size [2024-10-24 19:08:58,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2024-10-24 19:08:58,955 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-10-24 19:08:58,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-10-24 19:08:58,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:59,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:59,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:59,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:59,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:59,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-10-24 19:08:59,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:08:59,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 21 [2024-10-24 19:08:59,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-10-24 19:08:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:08:59,477 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:08:59,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:08:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516233372] [2024-10-24 19:08:59,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516233372] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:08:59,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:08:59,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:08:59,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477033961] [2024-10-24 19:08:59,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:08:59,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:08:59,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:08:59,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:08:59,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:09:01,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-10-24 19:09:01,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 138 flow. Second operand has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:01,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:01,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-10-24 19:09:01,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:02,181 INFO L124 PetriNetUnfolderBase]: 163/515 cut-off events. [2024-10-24 19:09:02,182 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-24 19:09:02,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 515 events. 163/515 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2774 event pairs, 4 based on Foata normal form. 0/436 useless extension candidates. Maximal degree in co-relation 921. Up to 184 conditions per place. [2024-10-24 19:09:02,185 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 67 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-10-24 19:09:02,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 396 flow [2024-10-24 19:09:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 19:09:02,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-24 19:09:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 513 transitions. [2024-10-24 19:09:02,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47544022242817424 [2024-10-24 19:09:02,187 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 138 flow. Second operand 13 states and 513 transitions. [2024-10-24 19:09:02,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 396 flow [2024-10-24 19:09:02,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 98 transitions, 385 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-24 19:09:02,195 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 189 flow [2024-10-24 19:09:02,195 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=189, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-10-24 19:09:02,196 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2024-10-24 19:09:02,196 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 189 flow [2024-10-24 19:09:02,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.77777777777778) internal successors, (313), 9 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:02,196 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:02,196 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:02,203 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2024-10-24 19:09:02,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:02,397 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:02,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1049749606, now seen corresponding path program 1 times [2024-10-24 19:09:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152334102] [2024-10-24 19:09:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:02,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:02,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:02,401 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:02,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-10-24 19:09:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:02,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-24 19:09:02,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:02,633 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-10-24 19:09:02,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2024-10-24 19:09:02,674 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-10-24 19:09:02,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2024-10-24 19:09:02,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:09:02,779 INFO L349 Elim1Store]: treesize reduction 110, result has 29.5 percent of original size [2024-10-24 19:09:02,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 82 [2024-10-24 19:09:02,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2024-10-24 19:09:02,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 52 [2024-10-24 19:09:02,987 INFO L349 Elim1Store]: treesize reduction 142, result has 28.6 percent of original size [2024-10-24 19:09:02,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 60 treesize of output 101 [2024-10-24 19:09:03,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-10-24 19:09:03,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 63 [2024-10-24 19:09:03,439 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-10-24 19:09:03,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 187 treesize of output 177 [2024-10-24 19:09:04,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 19:09:04,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 274 treesize of output 210 [2024-10-24 19:09:05,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:05,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:05,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:05,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152334102] [2024-10-24 19:09:05,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152334102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:05,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:05,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 19:09:05,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407129308] [2024-10-24 19:09:05,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:05,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-24 19:09:05,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-24 19:09:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-24 19:09:10,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 19:09:10,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-24 19:09:10,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 189 flow. Second operand has 9 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:10,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:10,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-24 19:09:10,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:12,387 INFO L124 PetriNetUnfolderBase]: 172/519 cut-off events. [2024-10-24 19:09:12,387 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-10-24 19:09:12,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 519 events. 172/519 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2777 event pairs, 20 based on Foata normal form. 11/477 useless extension candidates. Maximal degree in co-relation 1013. Up to 174 conditions per place. [2024-10-24 19:09:12,391 INFO L140 encePairwiseOnDemand]: 72/83 looper letters, 53 selfloop transitions, 16 changer transitions 0/85 dead transitions. [2024-10-24 19:09:12,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 85 transitions, 380 flow [2024-10-24 19:09:12,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 19:09:12,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 19:09:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2024-10-24 19:09:12,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.499330655957162 [2024-10-24 19:09:12,394 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 189 flow. Second operand 9 states and 373 transitions. [2024-10-24 19:09:12,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 85 transitions, 380 flow [2024-10-24 19:09:12,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 364 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 19:09:12,397 INFO L231 Difference]: Finished difference. Result has 81 places, 64 transitions, 243 flow [2024-10-24 19:09:12,398 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=243, PETRI_PLACES=81, PETRI_TRANSITIONS=64} [2024-10-24 19:09:12,398 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -5 predicate places. [2024-10-24 19:09:12,399 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 64 transitions, 243 flow [2024-10-24 19:09:12,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.77777777777778) internal successors, (322), 9 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:12,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:12,399 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:12,406 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2024-10-24 19:09:12,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:12,600 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:12,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:12,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1978687744, now seen corresponding path program 1 times [2024-10-24 19:09:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:12,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17799085] [2024-10-24 19:09:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:12,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:12,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:12,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2024-10-24 19:09:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:12,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-24 19:09:12,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:12,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-10-24 19:09:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:12,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:12,765 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17799085] [2024-10-24 19:09:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17799085] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:12,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:09:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666250203] [2024-10-24 19:09:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:12,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 19:09:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 19:09:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 19:09:12,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 83 [2024-10-24 19:09:12,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 64 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:12,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:12,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 83 [2024-10-24 19:09:12,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:12,912 INFO L124 PetriNetUnfolderBase]: 121/388 cut-off events. [2024-10-24 19:09:12,912 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-24 19:09:12,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 388 events. 121/388 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1980 event pairs, 53 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 857. Up to 210 conditions per place. [2024-10-24 19:09:12,915 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 54 selfloop transitions, 6 changer transitions 0/83 dead transitions. [2024-10-24 19:09:12,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 83 transitions, 429 flow [2024-10-24 19:09:12,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 19:09:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 19:09:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-10-24 19:09:12,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2024-10-24 19:09:12,918 INFO L175 Difference]: Start difference. First operand has 81 places, 64 transitions, 243 flow. Second operand 3 states and 213 transitions. [2024-10-24 19:09:12,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 83 transitions, 429 flow [2024-10-24 19:09:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 83 transitions, 407 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-10-24 19:09:12,922 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 237 flow [2024-10-24 19:09:12,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-10-24 19:09:12,923 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2024-10-24 19:09:12,923 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 237 flow [2024-10-24 19:09:12,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:12,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:12,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:12,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-10-24 19:09:13,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:13,124 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:13,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2002413156, now seen corresponding path program 1 times [2024-10-24 19:09:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1180118043] [2024-10-24 19:09:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:13,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:13,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:13,126 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:13,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2024-10-24 19:09:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:13,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-24 19:09:13,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:13,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:09:13,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:09:13,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:09:13,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-10-24 19:09:13,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:13,394 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:13,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:13,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1180118043] [2024-10-24 19:09:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1180118043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:09:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694785540] [2024-10-24 19:09:13,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:13,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:09:13,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:09:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:09:13,624 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-10-24 19:09:13,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:13,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:13,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-10-24 19:09:13,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:13,831 INFO L124 PetriNetUnfolderBase]: 157/491 cut-off events. [2024-10-24 19:09:13,832 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-10-24 19:09:13,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 491 events. 157/491 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2700 event pairs, 30 based on Foata normal form. 10/480 useless extension candidates. Maximal degree in co-relation 1148. Up to 190 conditions per place. [2024-10-24 19:09:13,835 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 58 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2024-10-24 19:09:13,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 464 flow [2024-10-24 19:09:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:09:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:09:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2024-10-24 19:09:13,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7349397590361446 [2024-10-24 19:09:13,837 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 237 flow. Second operand 5 states and 305 transitions. [2024-10-24 19:09:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 464 flow [2024-10-24 19:09:13,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 451 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:09:13,841 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 290 flow [2024-10-24 19:09:13,841 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-10-24 19:09:13,841 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-10-24 19:09:13,842 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 290 flow [2024-10-24 19:09:13,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:13,842 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:13,842 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:13,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2024-10-24 19:09:14,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:14,043 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:14,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:14,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2002413157, now seen corresponding path program 1 times [2024-10-24 19:09:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447642042] [2024-10-24 19:09:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:14,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:14,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:14,046 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:14,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2024-10-24 19:09:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:14,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 19:09:14,231 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:14,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:09:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:09:14,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-10-24 19:09:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:14,278 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:14,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:14,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447642042] [2024-10-24 19:09:14,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447642042] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:14,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:14,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 19:09:14,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197179678] [2024-10-24 19:09:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:14,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-24 19:09:14,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-24 19:09:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-24 19:09:14,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-10-24 19:09:14,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:14,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:14,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-10-24 19:09:14,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:14,612 INFO L124 PetriNetUnfolderBase]: 157/484 cut-off events. [2024-10-24 19:09:14,612 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-10-24 19:09:14,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 484 events. 157/484 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2640 event pairs, 64 based on Foata normal form. 10/473 useless extension candidates. Maximal degree in co-relation 1216. Up to 227 conditions per place. [2024-10-24 19:09:14,616 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 50 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2024-10-24 19:09:14,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 482 flow [2024-10-24 19:09:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-24 19:09:14,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-24 19:09:14,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 302 transitions. [2024-10-24 19:09:14,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.727710843373494 [2024-10-24 19:09:14,618 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 290 flow. Second operand 5 states and 302 transitions. [2024-10-24 19:09:14,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 482 flow [2024-10-24 19:09:14,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 85 transitions, 476 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 19:09:14,623 INFO L231 Difference]: Finished difference. Result has 88 places, 68 transitions, 362 flow [2024-10-24 19:09:14,623 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=88, PETRI_TRANSITIONS=68} [2024-10-24 19:09:14,624 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2024-10-24 19:09:14,624 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 68 transitions, 362 flow [2024-10-24 19:09:14,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:14,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:14,625 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:14,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2024-10-24 19:09:14,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:14,830 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:14,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:14,830 INFO L85 PathProgramCache]: Analyzing trace with hash -463376633, now seen corresponding path program 1 times [2024-10-24 19:09:14,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:14,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664966254] [2024-10-24 19:09:14,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:14,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:14,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:14,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:14,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2024-10-24 19:09:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:15,085 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-10-24 19:09:15,088 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:15,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:09:15,109 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:09:15,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:09:15,168 INFO L349 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2024-10-24 19:09:15,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2024-10-24 19:09:15,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:09:15,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-24 19:09:15,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-24 19:09:15,280 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-10-24 19:09:15,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-10-24 19:09:15,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-10-24 19:09:15,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-10-24 19:09:15,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2024-10-24 19:09:15,441 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-10-24 19:09:15,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-10-24 19:09:15,469 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-10-24 19:09:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:15,472 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:15,472 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:15,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664966254] [2024-10-24 19:09:15,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664966254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:15,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:15,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-24 19:09:15,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628098205] [2024-10-24 19:09:15,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:15,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 19:09:15,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 19:09:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-10-24 19:09:16,093 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-24 19:09:16,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 68 transitions, 362 flow. Second operand has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:16,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:16,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-24 19:09:16,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:16,771 INFO L124 PetriNetUnfolderBase]: 171/505 cut-off events. [2024-10-24 19:09:16,772 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2024-10-24 19:09:16,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1491 conditions, 505 events. 171/505 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2742 event pairs, 27 based on Foata normal form. 6/495 useless extension candidates. Maximal degree in co-relation 1467. Up to 85 conditions per place. [2024-10-24 19:09:16,775 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 62 selfloop transitions, 37 changer transitions 3/117 dead transitions. [2024-10-24 19:09:16,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 117 transitions, 801 flow [2024-10-24 19:09:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 19:09:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 19:09:16,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 488 transitions. [2024-10-24 19:09:16,777 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4899598393574297 [2024-10-24 19:09:16,778 INFO L175 Difference]: Start difference. First operand has 88 places, 68 transitions, 362 flow. Second operand 12 states and 488 transitions. [2024-10-24 19:09:16,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 117 transitions, 801 flow [2024-10-24 19:09:16,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 117 transitions, 775 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-24 19:09:16,785 INFO L231 Difference]: Finished difference. Result has 100 places, 82 transitions, 545 flow [2024-10-24 19:09:16,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=545, PETRI_PLACES=100, PETRI_TRANSITIONS=82} [2024-10-24 19:09:16,786 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-10-24 19:09:16,786 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 82 transitions, 545 flow [2024-10-24 19:09:16,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 36.1) internal successors, (361), 10 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:16,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:16,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:16,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2024-10-24 19:09:16,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:16,988 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:16,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:16,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1249020614, now seen corresponding path program 1 times [2024-10-24 19:09:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551242820] [2024-10-24 19:09:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:16,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:16,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:16,992 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:16,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-10-24 19:09:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:17,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-10-24 19:09:17,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:17,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:09:17,298 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:09:17,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:09:17,369 INFO L349 Elim1Store]: treesize reduction 62, result has 36.1 percent of original size [2024-10-24 19:09:17,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 55 [2024-10-24 19:09:17,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:09:17,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-24 19:09:17,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:17,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-24 19:09:17,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:17,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-10-24 19:09:17,538 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-10-24 19:09:17,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-10-24 19:09:17,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-10-24 19:09:17,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:17,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-10-24 19:09:17,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:17,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2024-10-24 19:09:17,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:17,737 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-10-24 19:09:17,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-10-24 19:09:17,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-10-24 19:09:17,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-10-24 19:09:17,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-10-24 19:09:17,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:17,812 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:17,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:17,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551242820] [2024-10-24 19:09:17,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551242820] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:17,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:17,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 19:09:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59366021] [2024-10-24 19:09:17,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:17,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:09:17,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:09:17,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:09:18,598 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-10-24 19:09:18,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 82 transitions, 545 flow. Second operand has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 11 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:18,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:18,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-10-24 19:09:18,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:19,481 INFO L124 PetriNetUnfolderBase]: 171/501 cut-off events. [2024-10-24 19:09:19,481 INFO L125 PetriNetUnfolderBase]: For 1068/1068 co-relation queries the response was YES. [2024-10-24 19:09:19,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1623 conditions, 501 events. 171/501 cut-off events. For 1068/1068 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2716 event pairs, 27 based on Foata normal form. 6/490 useless extension candidates. Maximal degree in co-relation 1593. Up to 131 conditions per place. [2024-10-24 19:09:19,485 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 76 selfloop transitions, 31 changer transitions 0/120 dead transitions. [2024-10-24 19:09:19,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 120 transitions, 887 flow [2024-10-24 19:09:19,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 19:09:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-24 19:09:19,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 535 transitions. [2024-10-24 19:09:19,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4604130808950086 [2024-10-24 19:09:19,488 INFO L175 Difference]: Start difference. First operand has 100 places, 82 transitions, 545 flow. Second operand 14 states and 535 transitions. [2024-10-24 19:09:19,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 120 transitions, 887 flow [2024-10-24 19:09:19,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 120 transitions, 876 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-10-24 19:09:19,494 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 627 flow [2024-10-24 19:09:19,494 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=627, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2024-10-24 19:09:19,495 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2024-10-24 19:09:19,495 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 627 flow [2024-10-24 19:09:19,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 33.90909090909091) internal successors, (373), 11 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:19,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:19,495 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:19,506 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-10-24 19:09:19,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:19,699 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:19,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1669892833, now seen corresponding path program 1 times [2024-10-24 19:09:19,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:19,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564521261] [2024-10-24 19:09:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:19,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:19,702 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:19,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2024-10-24 19:09:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:19,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 19:09:19,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:19,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:09:20,038 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-10-24 19:09:20,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-10-24 19:09:20,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:09:20,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:20,121 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:09:20,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:09:20,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:20,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:20,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:20,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 19:09:20,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:20,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-10-24 19:09:20,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-10-24 19:09:20,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-24 19:09:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:20,578 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:20,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:20,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564521261] [2024-10-24 19:09:20,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564521261] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:20,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:20,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 19:09:20,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857340681] [2024-10-24 19:09:20,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:20,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:09:20,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:20,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:09:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:09:21,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-10-24 19:09:21,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 85 transitions, 627 flow. Second operand has 11 states, 11 states have (on average 35.81818181818182) internal successors, (394), 11 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:21,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 19:09:21,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-10-24 19:09:21,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 19:09:22,956 INFO L124 PetriNetUnfolderBase]: 183/539 cut-off events. [2024-10-24 19:09:22,957 INFO L125 PetriNetUnfolderBase]: For 1474/1474 co-relation queries the response was YES. [2024-10-24 19:09:22,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1820 conditions, 539 events. 183/539 cut-off events. For 1474/1474 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2924 event pairs, 9 based on Foata normal form. 22/559 useless extension candidates. Maximal degree in co-relation 1785. Up to 133 conditions per place. [2024-10-24 19:09:22,963 INFO L140 encePairwiseOnDemand]: 68/83 looper letters, 88 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-10-24 19:09:22,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 135 transitions, 1117 flow [2024-10-24 19:09:22,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-24 19:09:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-24 19:09:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 752 transitions. [2024-10-24 19:09:22,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.476854787571338 [2024-10-24 19:09:22,966 INFO L175 Difference]: Start difference. First operand has 112 places, 85 transitions, 627 flow. Second operand 19 states and 752 transitions. [2024-10-24 19:09:22,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 135 transitions, 1117 flow [2024-10-24 19:09:22,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 135 transitions, 1035 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-10-24 19:09:22,975 INFO L231 Difference]: Finished difference. Result has 117 places, 88 transitions, 665 flow [2024-10-24 19:09:22,975 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=665, PETRI_PLACES=117, PETRI_TRANSITIONS=88} [2024-10-24 19:09:22,977 INFO L277 CegarLoopForPetriNet]: 86 programPoint places, 31 predicate places. [2024-10-24 19:09:22,977 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 88 transitions, 665 flow [2024-10-24 19:09:22,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 35.81818181818182) internal successors, (394), 11 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 19:09:22,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 19:09:22,978 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 19:09:22,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2024-10-24 19:09:23,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:23,179 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-10-24 19:09:23,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 19:09:23,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1669892832, now seen corresponding path program 1 times [2024-10-24 19:09:23,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-24 19:09:23,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333725489] [2024-10-24 19:09:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 19:09:23,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-24 19:09:23,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-24 19:09:23,181 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-24 19:09:23,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2024-10-24 19:09:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 19:09:23,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-10-24 19:09:23,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 19:09:23,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-10-24 19:09:23,496 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-10-24 19:09:23,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-10-24 19:09:23,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-10-24 19:09:23,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:23,577 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-10-24 19:09:23,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-10-24 19:09:23,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-24 19:09:23,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:23,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:23,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-24 19:09:23,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-10-24 19:09:23,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-24 19:09:23,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-10-24 19:09:23,970 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-10-24 19:09:23,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2024-10-24 19:09:24,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-10-24 19:09:24,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-10-24 19:09:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 19:09:24,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 19:09:24,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-24 19:09:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333725489] [2024-10-24 19:09:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333725489] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 19:09:24,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 19:09:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-24 19:09:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71604372] [2024-10-24 19:09:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 19:09:24,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-24 19:09:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-24 19:09:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-24 19:09:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-24 19:09:28,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]