./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 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/pthread-wmm/safe016_rmo.opt.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 e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:28:25,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:28:25,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:28:25,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:28:25,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:28:25,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:28:25,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:28:25,986 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:28:25,987 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:28:25,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:28:25,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:28:25,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:28:25,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:28:25,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:28:25,991 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:28:25,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:28:25,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:28:25,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:28:25,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:28:25,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:28:25,992 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:28:25,993 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:28:25,993 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:28:25,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:28:25,994 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:28:25,994 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:28:25,994 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:28:25,994 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:28:25,995 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:28:25,995 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:28:25,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:28:25,996 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:28:25,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:28:25,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:28:25,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:28:25,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:28:25,997 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:28:25,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:28:25,997 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:28:25,997 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:28:25,998 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:28:25,998 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:28:25,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e946e8dea30db7efb52f6f71a24f03cd895152f9df0eae9d8d1291d135f806ee [2024-11-20 17:28:26,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:28:26,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:28:26,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:28:26,244 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:28:26,244 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:28:26,245 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2024-11-20 17:28:28,020 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:28:28,439 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:28:28,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_rmo.opt.i [2024-11-20 17:28:28,470 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cfb8b71d/fcdd2f4ae1bd4a92b185df8f2b2e3ca8/FLAGb46171028 [2024-11-20 17:28:28,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cfb8b71d/fcdd2f4ae1bd4a92b185df8f2b2e3ca8 [2024-11-20 17:28:28,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:28:28,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:28:28,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:28:28,504 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:28:28,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:28:28,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:28:28" (1/1) ... [2024-11-20 17:28:28,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218b80d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:28, skipping insertion in model container [2024-11-20 17:28:28,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:28:28" (1/1) ... [2024-11-20 17:28:28,597 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:28:29,255 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:28:29,278 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:28:29,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:28:29,566 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:28:29,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29 WrapperNode [2024-11-20 17:28:29,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:28:29,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:28:29,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:28:29,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:28:29,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,670 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2024-11-20 17:28:29,674 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:28:29,679 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:28:29,679 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:28:29,679 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:28:29,707 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,714 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,756 INFO L175 MemorySlicer]: Split 28 memory accesses to 2 slices as follows [2, 26]. 93 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 11 writes are split as follows [0, 11]. [2024-11-20 17:28:29,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,780 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,786 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,792 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:28:29,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:28:29,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:28:29,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:28:29,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (1/1) ... [2024-11-20 17:28:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:28:29,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:28:29,896 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) [2024-11-20 17:28:29,905 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 [2024-11-20 17:28:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 17:28:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 17:28:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:28:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:28:29,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 17:28:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:28:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-20 17:28:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-20 17:28:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-20 17:28:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-20 17:28:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-20 17:28:29,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-20 17:28:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-20 17:28:29,991 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-20 17:28:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:28:29,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:28:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 17:28:29,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:28:29,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:28:29,993 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:28:30,257 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:28:30,264 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:28:31,088 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:28:31,089 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:28:32,062 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:28:32,063 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-20 17:28:32,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:28:32 BoogieIcfgContainer [2024-11-20 17:28:32,063 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:28:32,065 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:28:32,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:28:32,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:28:32,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:28:28" (1/3) ... [2024-11-20 17:28:32,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dbaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:28:32, skipping insertion in model container [2024-11-20 17:28:32,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:28:29" (2/3) ... [2024-11-20 17:28:32,078 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29dbaaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:28:32, skipping insertion in model container [2024-11-20 17:28:32,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:28:32" (3/3) ... [2024-11-20 17:28:32,079 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.opt.i [2024-11-20 17:28:32,111 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:28:32,115 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2024-11-20 17:28:32,116 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:28:32,374 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-20 17:28:32,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 100 transitions, 216 flow [2024-11-20 17:28:32,543 INFO L124 PetriNetUnfolderBase]: 2/96 cut-off events. [2024-11-20 17:28:32,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:28:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 2/96 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 389 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2024-11-20 17:28:32,561 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 100 transitions, 216 flow [2024-11-20 17:28:32,569 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 96 transitions, 204 flow [2024-11-20 17:28:32,583 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:28:32,602 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;@185e2782, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:28:32,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 88 error locations. [2024-11-20 17:28:32,609 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:28:32,610 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-11-20 17:28:32,610 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:28:32,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:32,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 17:28:32,615 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:32,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 882979422, now seen corresponding path program 1 times [2024-11-20 17:28:32,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:32,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080125318] [2024-11-20 17:28:32,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:32,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:32,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:33,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080125318] [2024-11-20 17:28:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080125318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:28:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106439114] [2024-11-20 17:28:33,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:33,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:28:33,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:33,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:28:33,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:28:33,250 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-20 17:28:33,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:33,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:33,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-20 17:28:33,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:51,281 INFO L124 PetriNetUnfolderBase]: 81178/115764 cut-off events. [2024-11-20 17:28:51,281 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2024-11-20 17:28:51,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222557 conditions, 115764 events. 81178/115764 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 7127. Compared 957699 event pairs, 81178 based on Foata normal form. 3430/68313 useless extension candidates. Maximal degree in co-relation 222545. Up to 105987 conditions per place. [2024-11-20 17:28:52,425 INFO L140 encePairwiseOnDemand]: 63/100 looper letters, 42 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2024-11-20 17:28:52,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 59 transitions, 216 flow [2024-11-20 17:28:52,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:28:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:28:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 139 transitions. [2024-11-20 17:28:52,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4633333333333333 [2024-11-20 17:28:52,441 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 204 flow. Second operand 3 states and 139 transitions. [2024-11-20 17:28:52,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 59 transitions, 216 flow [2024-11-20 17:28:52,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 212 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-20 17:28:52,475 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 128 flow [2024-11-20 17:28:52,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-11-20 17:28:52,480 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -37 predicate places. [2024-11-20 17:28:52,482 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 128 flow [2024-11-20 17:28:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:52,482 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:52,483 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 17:28:52,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:28:52,483 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:52,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:52,484 INFO L85 PathProgramCache]: Analyzing trace with hash 882979423, now seen corresponding path program 1 times [2024-11-20 17:28:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:52,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925634816] [2024-11-20 17:28:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:52,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:52,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:52,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:52,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925634816] [2024-11-20 17:28:52,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925634816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:52,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:52,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:28:52,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065644501] [2024-11-20 17:28:52,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:52,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:28:52,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:52,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:28:52,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:28:52,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-20 17:28:52,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:52,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:52,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-20 17:28:52,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:54,318 INFO L124 PetriNetUnfolderBase]: 6311/9814 cut-off events. [2024-11-20 17:28:54,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:28:54,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18580 conditions, 9814 events. 6311/9814 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 67742 event pairs, 6311 based on Foata normal form. 0/9246 useless extension candidates. Maximal degree in co-relation 18574. Up to 8592 conditions per place. [2024-11-20 17:28:54,362 INFO L140 encePairwiseOnDemand]: 85/100 looper letters, 27 selfloop transitions, 1 changer transitions 1/45 dead transitions. [2024-11-20 17:28:54,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 45 transitions, 158 flow [2024-11-20 17:28:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:28:54,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:28:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-11-20 17:28:54,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3433333333333333 [2024-11-20 17:28:54,364 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 128 flow. Second operand 3 states and 103 transitions. [2024-11-20 17:28:54,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 45 transitions, 158 flow [2024-11-20 17:28:54,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 45 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:28:54,365 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 99 flow [2024-11-20 17:28:54,365 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-11-20 17:28:54,366 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -50 predicate places. [2024-11-20 17:28:54,366 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 99 flow [2024-11-20 17:28:54,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:54,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:54,366 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:28:54,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:28:54,367 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:54,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:54,367 INFO L85 PathProgramCache]: Analyzing trace with hash 919965507, now seen corresponding path program 1 times [2024-11-20 17:28:54,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:54,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492096299] [2024-11-20 17:28:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:54,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:54,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:54,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:54,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492096299] [2024-11-20 17:28:54,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492096299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:54,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:54,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:28:54,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437544359] [2024-11-20 17:28:54,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:54,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:28:54,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:54,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:28:54,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:28:54,566 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-20 17:28:54,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:54,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:54,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-20 17:28:54,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:55,608 INFO L124 PetriNetUnfolderBase]: 5447/8464 cut-off events. [2024-11-20 17:28:55,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:28:55,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16079 conditions, 8464 events. 5447/8464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 55783 event pairs, 1783 based on Foata normal form. 0/8125 useless extension candidates. Maximal degree in co-relation 16072. Up to 6097 conditions per place. [2024-11-20 17:28:55,642 INFO L140 encePairwiseOnDemand]: 96/100 looper letters, 43 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2024-11-20 17:28:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 61 transitions, 225 flow [2024-11-20 17:28:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:28:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:28:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2024-11-20 17:28:55,644 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3566666666666667 [2024-11-20 17:28:55,644 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 99 flow. Second operand 3 states and 107 transitions. [2024-11-20 17:28:55,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 61 transitions, 225 flow [2024-11-20 17:28:55,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:28:55,646 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 108 flow [2024-11-20 17:28:55,646 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2024-11-20 17:28:55,647 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -49 predicate places. [2024-11-20 17:28:55,647 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 108 flow [2024-11-20 17:28:55,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:55,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:55,648 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:28:55,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:28:55,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:55,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash -676299082, now seen corresponding path program 1 times [2024-11-20 17:28:55,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:55,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524694770] [2024-11-20 17:28:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:55,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:55,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:55,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:55,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524694770] [2024-11-20 17:28:55,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524694770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:55,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:55,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:28:55,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227770452] [2024-11-20 17:28:55,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:55,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:28:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:55,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:28:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:28:55,775 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-20 17:28:55,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:55,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:55,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-20 17:28:55,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:56,657 INFO L124 PetriNetUnfolderBase]: 5039/7912 cut-off events. [2024-11-20 17:28:56,657 INFO L125 PetriNetUnfolderBase]: For 544/544 co-relation queries the response was YES. [2024-11-20 17:28:56,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15953 conditions, 7912 events. 5039/7912 cut-off events. For 544/544 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 52246 event pairs, 1591 based on Foata normal form. 0/7861 useless extension candidates. Maximal degree in co-relation 15944. Up to 5544 conditions per place. [2024-11-20 17:28:56,685 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 42 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-20 17:28:56,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 60 transitions, 228 flow [2024-11-20 17:28:56,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:28:56,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:28:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-11-20 17:28:56,686 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-11-20 17:28:56,686 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 108 flow. Second operand 4 states and 125 transitions. [2024-11-20 17:28:56,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 60 transitions, 228 flow [2024-11-20 17:28:56,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:28:56,688 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 104 flow [2024-11-20 17:28:56,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-11-20 17:28:56,689 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -49 predicate places. [2024-11-20 17:28:56,690 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 104 flow [2024-11-20 17:28:56,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:56,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:56,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:28:56,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-20 17:28:56,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:56,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:56,691 INFO L85 PathProgramCache]: Analyzing trace with hash -676299081, now seen corresponding path program 1 times [2024-11-20 17:28:56,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:56,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599976743] [2024-11-20 17:28:56,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:56,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:56,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599976743] [2024-11-20 17:28:56,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599976743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:56,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:56,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:28:56,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846168647] [2024-11-20 17:28:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:56,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:28:56,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:28:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:28:56,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 100 [2024-11-20 17:28:56,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:56,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:56,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 100 [2024-11-20 17:28:56,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:57,771 INFO L124 PetriNetUnfolderBase]: 4631/7488 cut-off events. [2024-11-20 17:28:57,772 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-20 17:28:57,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14833 conditions, 7488 events. 4631/7488 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 51977 event pairs, 887 based on Foata normal form. 144/7581 useless extension candidates. Maximal degree in co-relation 14824. Up to 4992 conditions per place. [2024-11-20 17:28:57,855 INFO L140 encePairwiseOnDemand]: 97/100 looper letters, 41 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2024-11-20 17:28:57,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 222 flow [2024-11-20 17:28:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:28:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:28:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 124 transitions. [2024-11-20 17:28:57,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.31 [2024-11-20 17:28:57,862 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 104 flow. Second operand 4 states and 124 transitions. [2024-11-20 17:28:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 222 flow [2024-11-20 17:28:57,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 59 transitions, 217 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:28:57,865 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 99 flow [2024-11-20 17:28:57,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-20 17:28:57,867 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -50 predicate places. [2024-11-20 17:28:57,868 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 99 flow [2024-11-20 17:28:57,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:57,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:57,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:28:57,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:28:57,871 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:57,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:57,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1456215445, now seen corresponding path program 1 times [2024-11-20 17:28:57,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:57,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527672746] [2024-11-20 17:28:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:57,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:57,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:57,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527672746] [2024-11-20 17:28:57,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527672746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:57,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:57,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:28:57,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524995735] [2024-11-20 17:28:57,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:57,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:28:57,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:28:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:28:57,947 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 100 [2024-11-20 17:28:57,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:57,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:57,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 100 [2024-11-20 17:28:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:28:58,861 INFO L124 PetriNetUnfolderBase]: 4631/7366 cut-off events. [2024-11-20 17:28:58,861 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-11-20 17:28:58,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14710 conditions, 7366 events. 4631/7366 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 50247 event pairs, 4631 based on Foata normal form. 192/7374 useless extension candidates. Maximal degree in co-relation 14702. Up to 6336 conditions per place. [2024-11-20 17:28:58,908 INFO L140 encePairwiseOnDemand]: 98/100 looper letters, 24 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-20 17:28:58,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 41 transitions, 149 flow [2024-11-20 17:28:58,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:28:58,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:28:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-20 17:28:58,910 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-11-20 17:28:58,910 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 99 flow. Second operand 3 states and 84 transitions. [2024-11-20 17:28:58,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 41 transitions, 149 flow [2024-11-20 17:28:58,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 41 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:28:58,913 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 94 flow [2024-11-20 17:28:58,913 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-11-20 17:28:58,914 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -51 predicate places. [2024-11-20 17:28:58,915 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 94 flow [2024-11-20 17:28:58,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:58,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:28:58,915 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:28:58,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 17:28:58,916 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:28:58,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:28:58,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1456214123, now seen corresponding path program 1 times [2024-11-20 17:28:58,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:28:58,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948504989] [2024-11-20 17:28:58,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:28:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:28:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:28:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:28:59,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:28:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948504989] [2024-11-20 17:28:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948504989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:28:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:28:59,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:28:59,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101621691] [2024-11-20 17:28:59,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:28:59,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:28:59,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:28:59,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:28:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:28:59,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 100 [2024-11-20 17:28:59,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:28:59,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:28:59,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 100 [2024-11-20 17:28:59,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:29:01,453 INFO L124 PetriNetUnfolderBase]: 12622/18513 cut-off events. [2024-11-20 17:29:01,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:29:01,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37624 conditions, 18513 events. 12622/18513 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 121986 event pairs, 1338 based on Foata normal form. 500/18915 useless extension candidates. Maximal degree in co-relation 37616. Up to 10831 conditions per place. [2024-11-20 17:29:01,602 INFO L140 encePairwiseOnDemand]: 93/100 looper letters, 57 selfloop transitions, 6 changer transitions 1/74 dead transitions. [2024-11-20 17:29:01,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 74 transitions, 300 flow [2024-11-20 17:29:01,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:29:01,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:29:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-11-20 17:29:01,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.315 [2024-11-20 17:29:01,604 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 94 flow. Second operand 4 states and 126 transitions. [2024-11-20 17:29:01,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 74 transitions, 300 flow [2024-11-20 17:29:01,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 74 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:29:01,606 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 135 flow [2024-11-20 17:29:01,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=100, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-11-20 17:29:01,606 INFO L277 CegarLoopForPetriNet]: 107 programPoint places, -48 predicate places. [2024-11-20 17:29:01,607 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 135 flow [2024-11-20 17:29:01,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:29:01,607 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:29:01,607 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] [2024-11-20 17:29:01,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 17:29:01,607 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 85 more)] === [2024-11-20 17:29:01,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:29:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -779365323, now seen corresponding path program 1 times [2024-11-20 17:29:01,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:29:01,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441709467] [2024-11-20 17:29:01,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:29:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:29:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:29:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:29:01,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:29:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441709467] [2024-11-20 17:29:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441709467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:29:01,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:29:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:29:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226429324] [2024-11-20 17:29:01,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:29:01,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:29:01,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:29:01,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:29:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:29:01,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 100 [2024-11-20 17:29:01,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:29:01,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:29:01,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 100 [2024-11-20 17:29:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand