./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-wmm/safe000_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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 ../sv-benchmarks/c/pthread-wmm/safe000_power.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 23eea01b75afdbb0ef381e4ddf0b030c295f59ec7a283af707e459bd9dd9c0c0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:58:12,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:58:12,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:58:12,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:58:12,927 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:58:12,960 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:58:12,960 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:58:12,961 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:58:12,962 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:58:12,963 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:58:12,963 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:58:12,963 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:58:12,964 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:58:12,964 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:58:12,965 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:58:12,965 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:58:12,965 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:58:12,965 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:58:12,966 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:58:12,966 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:58:12,966 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:58:12,967 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:58:12,967 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:58:12,967 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:58:12,968 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:58:12,968 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:58:12,968 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:58:12,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:58:12,969 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:58:12,969 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:58:12,969 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:58:12,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:58:12,970 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:58:12,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:58:12,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:58:12,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:58:12,971 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:58:12,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:58:12,971 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:58:12,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:58:12,972 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:58:12,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:58:12,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23eea01b75afdbb0ef381e4ddf0b030c295f59ec7a283af707e459bd9dd9c0c0 [2024-11-10 17:58:13,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:58:13,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:58:13,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:58:13,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:58:13,266 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:58:13,267 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe000_power.opt.i [2024-11-10 17:58:14,693 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:58:14,970 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:58:14,972 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe000_power.opt.i [2024-11-10 17:58:14,992 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a825543bb/d7d7f3dc8b744d7aa47d0e8a4e35f6fe/FLAG4be44a8f9 [2024-11-10 17:58:15,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a825543bb/d7d7f3dc8b744d7aa47d0e8a4e35f6fe [2024-11-10 17:58:15,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:58:15,014 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:58:15,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:58:15,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:58:15,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:58:15,022 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f1447c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15, skipping insertion in model container [2024-11-10 17:58:15,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,075 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:58:15,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:58:15,486 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:58:15,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:58:15,601 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:58:15,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15 WrapperNode [2024-11-10 17:58:15,602 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:58:15,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:58:15,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:58:15,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:58:15,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,636 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,670 INFO L138 Inliner]: procedures = 175, calls = 62, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 173 [2024-11-10 17:58:15,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:58:15,672 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:58:15,672 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:58:15,672 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:58:15,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,691 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,712 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 6 writes are split as follows [0, 6]. [2024-11-10 17:58:15,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,723 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,728 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,734 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:58:15,735 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:58:15,735 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:58:15,735 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:58:15,736 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (1/1) ... [2024-11-10 17:58:15,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:58:15,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:58:15,779 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) [2024-11-10 17:58:15,784 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 [2024-11-10 17:58:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:58:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:58:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:58:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:58:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 17:58:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:58:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 17:58:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 17:58:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 17:58:15,832 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 17:58:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 17:58:15,833 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 17:58:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:58:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:58:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 17:58:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:58:15,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:58:15,836 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 17:58:16,010 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:58:16,013 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:58:16,661 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:58:16,661 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:58:17,145 WARN L170 LargeBlockEncoding]: Complex 2:9 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2024-11-10 17:58:17,254 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:58:17,275 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:58:17,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:58:17 BoogieIcfgContainer [2024-11-10 17:58:17,276 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:58:17,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:58:17,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:58:17,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:58:17,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:58:15" (1/3) ... [2024-11-10 17:58:17,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddf6468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:58:17, skipping insertion in model container [2024-11-10 17:58:17,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:58:15" (2/3) ... [2024-11-10 17:58:17,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ddf6468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:58:17, skipping insertion in model container [2024-11-10 17:58:17,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:58:17" (3/3) ... [2024-11-10 17:58:17,291 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_power.opt.i [2024-11-10 17:58:17,312 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:58:17,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-10 17:58:17,312 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:58:17,473 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 17:58:17,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 87 transitions, 186 flow [2024-11-10 17:58:17,560 INFO L124 PetriNetUnfolderBase]: 11/84 cut-off events. [2024-11-10 17:58:17,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:58:17,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 84 events. 11/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 283 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2024-11-10 17:58:17,569 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 87 transitions, 186 flow [2024-11-10 17:58:17,573 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 84 transitions, 177 flow [2024-11-10 17:58:17,586 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:58:17,593 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;@1bf0d424, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:58:17,594 INFO L334 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2024-11-10 17:58:17,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:58:17,598 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-11-10 17:58:17,599 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:58:17,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:17,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 17:58:17,600 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err4ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:17,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:17,605 INFO L85 PathProgramCache]: Analyzing trace with hash 801803917, now seen corresponding path program 1 times [2024-11-10 17:58:17,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:17,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494795065] [2024-11-10 17:58:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:18,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:18,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494795065] [2024-11-10 17:58:18,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494795065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:18,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:18,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:58:18,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101041283] [2024-11-10 17:58:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:18,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:58:18,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:58:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:58:18,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:18,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 177 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:18,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:18,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:18,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:31,704 INFO L124 PetriNetUnfolderBase]: 82933/117725 cut-off events. [2024-11-10 17:58:31,704 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-11-10 17:58:31,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232194 conditions, 117725 events. 82933/117725 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 5016. Compared 919667 event pairs, 30039 based on Foata normal form. 3840/67827 useless extension candidates. Maximal degree in co-relation 232183. Up to 58257 conditions per place. [2024-11-10 17:58:32,506 INFO L140 encePairwiseOnDemand]: 58/87 looper letters, 94 selfloop transitions, 3 changer transitions 0/104 dead transitions. [2024-11-10 17:58:32,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 417 flow [2024-11-10 17:58:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:58:32,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:58:32,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-10 17:58:32,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6781609195402298 [2024-11-10 17:58:32,519 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 177 flow. Second operand 3 states and 177 transitions. [2024-11-10 17:58:32,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 417 flow [2024-11-10 17:58:32,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 412 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:58:32,533 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 140 flow [2024-11-10 17:58:32,535 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-11-10 17:58:32,539 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -15 predicate places. [2024-11-10 17:58:32,541 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 140 flow [2024-11-10 17:58:32,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:32,542 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:32,542 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:58:32,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:58:32,543 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:32,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:32,544 INFO L85 PathProgramCache]: Analyzing trace with hash -913881495, now seen corresponding path program 1 times [2024-11-10 17:58:32,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:32,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237200074] [2024-11-10 17:58:32,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:32,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:32,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:32,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:32,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:32,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237200074] [2024-11-10 17:58:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237200074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:32,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:32,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:58:32,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150745558] [2024-11-10 17:58:32,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:32,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:58:32,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:32,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:58:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:58:32,671 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:32,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:32,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:32,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:32,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:38,194 INFO L124 PetriNetUnfolderBase]: 33531/49985 cut-off events. [2024-11-10 17:58:38,194 INFO L125 PetriNetUnfolderBase]: For 6044/6049 co-relation queries the response was YES. [2024-11-10 17:58:38,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101117 conditions, 49985 events. 33531/49985 cut-off events. For 6044/6049 co-relation queries the response was YES. Maximal size of possible extension queue 2016. Compared 365935 event pairs, 32847 based on Foata normal form. 0/36161 useless extension candidates. Maximal degree in co-relation 101105. Up to 46544 conditions per place. [2024-11-10 17:58:38,515 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 42 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-11-10 17:58:38,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 208 flow [2024-11-10 17:58:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:58:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:58:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-10 17:58:38,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3103448275862069 [2024-11-10 17:58:38,519 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 140 flow. Second operand 3 states and 81 transitions. [2024-11-10 17:58:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 208 flow [2024-11-10 17:58:38,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:58:38,525 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 118 flow [2024-11-10 17:58:38,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-10 17:58:38,526 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -24 predicate places. [2024-11-10 17:58:38,526 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 118 flow [2024-11-10 17:58:38,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:38,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:38,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 17:58:38,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:58:38,528 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:38,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:38,529 INFO L85 PathProgramCache]: Analyzing trace with hash -913881494, now seen corresponding path program 1 times [2024-11-10 17:58:38,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:38,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111634255] [2024-11-10 17:58:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:38,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:38,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:38,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111634255] [2024-11-10 17:58:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111634255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:38,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:58:38,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274680770] [2024-11-10 17:58:38,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:38,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:58:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:38,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:58:38,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:58:38,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:38,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:38,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:38,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:38,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:40,105 INFO L124 PetriNetUnfolderBase]: 10065/15465 cut-off events. [2024-11-10 17:58:40,106 INFO L125 PetriNetUnfolderBase]: For 888/891 co-relation queries the response was YES. [2024-11-10 17:58:40,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31005 conditions, 15465 events. 10065/15465 cut-off events. For 888/891 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 100899 event pairs, 9769 based on Foata normal form. 441/14870 useless extension candidates. Maximal degree in co-relation 30997. Up to 14222 conditions per place. [2024-11-10 17:58:40,177 INFO L140 encePairwiseOnDemand]: 77/87 looper letters, 32 selfloop transitions, 1 changer transitions 1/41 dead transitions. [2024-11-10 17:58:40,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 41 transitions, 168 flow [2024-11-10 17:58:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:58:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:58:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-10 17:58:40,180 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27586206896551724 [2024-11-10 17:58:40,180 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 118 flow. Second operand 3 states and 72 transitions. [2024-11-10 17:58:40,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 41 transitions, 168 flow [2024-11-10 17:58:40,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 41 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:58:40,182 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 99 flow [2024-11-10 17:58:40,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=99, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-11-10 17:58:40,184 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -32 predicate places. [2024-11-10 17:58:40,185 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 99 flow [2024-11-10 17:58:40,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:40,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:40,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:40,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:58:40,186 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:40,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash -735034279, now seen corresponding path program 1 times [2024-11-10 17:58:40,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:40,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352081420] [2024-11-10 17:58:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:40,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:40,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352081420] [2024-11-10 17:58:40,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352081420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:40,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:40,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:58:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060870270] [2024-11-10 17:58:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:40,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:58:40,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:58:40,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:58:40,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:40,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:40,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:40,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:40,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:41,961 INFO L124 PetriNetUnfolderBase]: 8975/12863 cut-off events. [2024-11-10 17:58:41,962 INFO L125 PetriNetUnfolderBase]: For 677/680 co-relation queries the response was YES. [2024-11-10 17:58:41,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26678 conditions, 12863 events. 8975/12863 cut-off events. For 677/680 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 75475 event pairs, 1005 based on Foata normal form. 0/12026 useless extension candidates. Maximal degree in co-relation 26669. Up to 11851 conditions per place. [2024-11-10 17:58:42,008 INFO L140 encePairwiseOnDemand]: 82/87 looper letters, 49 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-10 17:58:42,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 249 flow [2024-11-10 17:58:42,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:58:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:58:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-10 17:58:42,010 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3218390804597701 [2024-11-10 17:58:42,010 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 99 flow. Second operand 3 states and 84 transitions. [2024-11-10 17:58:42,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 249 flow [2024-11-10 17:58:42,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:58:42,012 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 114 flow [2024-11-10 17:58:42,012 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-11-10 17:58:42,013 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -31 predicate places. [2024-11-10 17:58:42,013 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 114 flow [2024-11-10 17:58:42,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:42,014 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:42,014 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:42,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:58:42,014 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:42,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1993214168, now seen corresponding path program 1 times [2024-11-10 17:58:42,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:42,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590501248] [2024-11-10 17:58:42,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:42,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:42,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:42,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590501248] [2024-11-10 17:58:42,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590501248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:42,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:42,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:58:42,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971120422] [2024-11-10 17:58:42,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:42,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:58:42,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:42,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:58:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:58:42,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:42,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:42,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:42,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:42,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:43,273 INFO L124 PetriNetUnfolderBase]: 8245/11833 cut-off events. [2024-11-10 17:58:43,273 INFO L125 PetriNetUnfolderBase]: For 1559/1562 co-relation queries the response was YES. [2024-11-10 17:58:43,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26010 conditions, 11833 events. 8245/11833 cut-off events. For 1559/1562 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 69068 event pairs, 765 based on Foata normal form. 0/11596 useless extension candidates. Maximal degree in co-relation 25999. Up to 10820 conditions per place. [2024-11-10 17:58:43,322 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 48 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2024-11-10 17:58:43,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 59 transitions, 258 flow [2024-11-10 17:58:43,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:58:43,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:58:43,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-11-10 17:58:43,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26436781609195403 [2024-11-10 17:58:43,323 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 114 flow. Second operand 4 states and 92 transitions. [2024-11-10 17:58:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 59 transitions, 258 flow [2024-11-10 17:58:43,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:58:43,325 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 110 flow [2024-11-10 17:58:43,326 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2024-11-10 17:58:43,326 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -31 predicate places. [2024-11-10 17:58:43,326 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 110 flow [2024-11-10 17:58:43,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:43,327 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:43,327 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:43,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:58:43,327 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:43,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1544593355, now seen corresponding path program 1 times [2024-11-10 17:58:43,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:43,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250940887] [2024-11-10 17:58:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:43,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:43,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:43,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250940887] [2024-11-10 17:58:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250940887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:43,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:43,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:58:43,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971736019] [2024-11-10 17:58:43,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:43,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:58:43,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:43,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:58:43,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:58:43,588 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:43,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:43,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:43,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:43,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:44,482 INFO L124 PetriNetUnfolderBase]: 7515/10803 cut-off events. [2024-11-10 17:58:44,482 INFO L125 PetriNetUnfolderBase]: For 1529/1532 co-relation queries the response was YES. [2024-11-10 17:58:44,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23620 conditions, 10803 events. 7515/10803 cut-off events. For 1529/1532 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 62613 event pairs, 525 based on Foata normal form. 300/10866 useless extension candidates. Maximal degree in co-relation 23609. Up to 9790 conditions per place. [2024-11-10 17:58:44,557 INFO L140 encePairwiseOnDemand]: 83/87 looper letters, 47 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2024-11-10 17:58:44,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 58 transitions, 252 flow [2024-11-10 17:58:44,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:58:44,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:58:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-11-10 17:58:44,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2614942528735632 [2024-11-10 17:58:44,559 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 110 flow. Second operand 4 states and 91 transitions. [2024-11-10 17:58:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 58 transitions, 252 flow [2024-11-10 17:58:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 58 transitions, 243 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:58:44,561 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 105 flow [2024-11-10 17:58:44,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2024-11-10 17:58:44,562 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -32 predicate places. [2024-11-10 17:58:44,562 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 105 flow [2024-11-10 17:58:44,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:44,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:44,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:44,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:58:44,563 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:44,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:44,564 INFO L85 PathProgramCache]: Analyzing trace with hash 14954236, now seen corresponding path program 1 times [2024-11-10 17:58:44,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:44,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395950128] [2024-11-10 17:58:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:44,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:44,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:44,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395950128] [2024-11-10 17:58:44,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395950128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:44,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:44,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:58:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689037649] [2024-11-10 17:58:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:44,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:58:44,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:58:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:58:44,616 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 87 [2024-11-10 17:58:44,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:44,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:44,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 87 [2024-11-10 17:58:44,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:45,545 INFO L124 PetriNetUnfolderBase]: 7515/11627 cut-off events. [2024-11-10 17:58:45,545 INFO L125 PetriNetUnfolderBase]: For 1344/1347 co-relation queries the response was YES. [2024-11-10 17:58:45,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24443 conditions, 11627 events. 7515/11627 cut-off events. For 1344/1347 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 73402 event pairs, 7291 based on Foata normal form. 336/11671 useless extension candidates. Maximal degree in co-relation 24433. Up to 10664 conditions per place. [2024-11-10 17:58:45,594 INFO L140 encePairwiseOnDemand]: 85/87 looper letters, 29 selfloop transitions, 1 changer transitions 1/37 dead transitions. [2024-11-10 17:58:45,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 37 transitions, 165 flow [2024-11-10 17:58:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:58:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:58:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2024-11-10 17:58:45,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2222222222222222 [2024-11-10 17:58:45,595 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 105 flow. Second operand 3 states and 58 transitions. [2024-11-10 17:58:45,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 37 transitions, 165 flow [2024-11-10 17:58:45,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:58:45,597 INFO L231 Difference]: Finished difference. Result has 50 places, 36 transitions, 98 flow [2024-11-10 17:58:45,597 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=36} [2024-11-10 17:58:45,598 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -33 predicate places. [2024-11-10 17:58:45,598 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 36 transitions, 98 flow [2024-11-10 17:58:45,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:45,598 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:45,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:45,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:58:45,599 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:45,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 14954859, now seen corresponding path program 1 times [2024-11-10 17:58:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652942831] [2024-11-10 17:58:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:45,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:45,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:45,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652942831] [2024-11-10 17:58:45,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652942831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:45,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:45,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 17:58:45,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945694997] [2024-11-10 17:58:45,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:45,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:58:45,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:45,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:58:45,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:58:45,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:45,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:45,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:45,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:46,848 INFO L124 PetriNetUnfolderBase]: 5635/9011 cut-off events. [2024-11-10 17:58:46,848 INFO L125 PetriNetUnfolderBase]: For 480/483 co-relation queries the response was YES. [2024-11-10 17:58:46,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18891 conditions, 9011 events. 5635/9011 cut-off events. For 480/483 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 57609 event pairs, 757 based on Foata normal form. 336/9161 useless extension candidates. Maximal degree in co-relation 18881. Up to 4957 conditions per place. [2024-11-10 17:58:46,888 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 61 selfloop transitions, 5 changer transitions 1/73 dead transitions. [2024-11-10 17:58:46,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 338 flow [2024-11-10 17:58:46,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:58:46,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:58:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-10 17:58:46,889 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3045977011494253 [2024-11-10 17:58:46,889 INFO L175 Difference]: Start difference. First operand has 50 places, 36 transitions, 98 flow. Second operand 4 states and 106 transitions. [2024-11-10 17:58:46,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 338 flow [2024-11-10 17:58:46,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 73 transitions, 337 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:58:46,892 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 131 flow [2024-11-10 17:58:46,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-11-10 17:58:46,892 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -30 predicate places. [2024-11-10 17:58:46,893 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 131 flow [2024-11-10 17:58:46,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:46,893 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:46,893 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] [2024-11-10 17:58:46,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:58:46,893 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:46,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:46,894 INFO L85 PathProgramCache]: Analyzing trace with hash -277158521, now seen corresponding path program 1 times [2024-11-10 17:58:46,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:46,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260645865] [2024-11-10 17:58:46,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:46,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:47,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:47,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260645865] [2024-11-10 17:58:47,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260645865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:47,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:47,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:58:47,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322972549] [2024-11-10 17:58:47,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:47,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 17:58:47,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:47,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 17:58:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 17:58:47,150 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:47,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:47,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:47,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:47,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:47,764 INFO L124 PetriNetUnfolderBase]: 3219/5175 cut-off events. [2024-11-10 17:58:47,765 INFO L125 PetriNetUnfolderBase]: For 1318/1321 co-relation queries the response was YES. [2024-11-10 17:58:47,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12510 conditions, 5175 events. 3219/5175 cut-off events. For 1318/1321 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 29163 event pairs, 459 based on Foata normal form. 248/5317 useless extension candidates. Maximal degree in co-relation 12497. Up to 1777 conditions per place. [2024-11-10 17:58:47,785 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 76 selfloop transitions, 8 changer transitions 1/91 dead transitions. [2024-11-10 17:58:47,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 460 flow [2024-11-10 17:58:47,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:58:47,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:58:47,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-10 17:58:47,786 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3103448275862069 [2024-11-10 17:58:47,786 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 131 flow. Second operand 5 states and 135 transitions. [2024-11-10 17:58:47,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 460 flow [2024-11-10 17:58:47,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 450 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-10 17:58:47,790 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 171 flow [2024-11-10 17:58:47,790 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2024-11-10 17:58:47,791 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -26 predicate places. [2024-11-10 17:58:47,791 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 171 flow [2024-11-10 17:58:47,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:47,791 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:47,792 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] [2024-11-10 17:58:47,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:58:47,792 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:47,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:47,792 INFO L85 PathProgramCache]: Analyzing trace with hash 793581086, now seen corresponding path program 1 times [2024-11-10 17:58:47,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:47,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862740074] [2024-11-10 17:58:47,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:47,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:48,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862740074] [2024-11-10 17:58:48,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862740074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:48,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:48,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:58:48,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845311488] [2024-11-10 17:58:48,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:48,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:58:48,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:48,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:58:48,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:58:48,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:48,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:48,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:48,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:48,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:48,610 INFO L124 PetriNetUnfolderBase]: 1889/2941 cut-off events. [2024-11-10 17:58:48,611 INFO L125 PetriNetUnfolderBase]: For 2134/2137 co-relation queries the response was YES. [2024-11-10 17:58:48,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 2941 events. 1889/2941 cut-off events. For 2134/2137 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 14265 event pairs, 403 based on Foata normal form. 100/2971 useless extension candidates. Maximal degree in co-relation 7953. Up to 1044 conditions per place. [2024-11-10 17:58:48,630 INFO L140 encePairwiseOnDemand]: 81/87 looper letters, 64 selfloop transitions, 11 changer transitions 1/82 dead transitions. [2024-11-10 17:58:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 82 transitions, 437 flow [2024-11-10 17:58:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:58:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:58:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-11-10 17:58:48,632 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26053639846743293 [2024-11-10 17:58:48,632 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 171 flow. Second operand 6 states and 136 transitions. [2024-11-10 17:58:48,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 82 transitions, 437 flow [2024-11-10 17:58:48,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 82 transitions, 412 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-10 17:58:48,648 INFO L231 Difference]: Finished difference. Result has 60 places, 42 transitions, 185 flow [2024-11-10 17:58:48,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=185, PETRI_PLACES=60, PETRI_TRANSITIONS=42} [2024-11-10 17:58:48,650 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -23 predicate places. [2024-11-10 17:58:48,652 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 42 transitions, 185 flow [2024-11-10 17:58:48,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:48,652 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:48,653 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, 1, 1, 1, 1, 1, 1] [2024-11-10 17:58:48,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:58:48,653 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:48,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:48,654 INFO L85 PathProgramCache]: Analyzing trace with hash 275044953, now seen corresponding path program 1 times [2024-11-10 17:58:48,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:48,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240842882] [2024-11-10 17:58:48,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:48,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:48,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:58:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:58:49,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:58:49,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240842882] [2024-11-10 17:58:49,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240842882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:58:49,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:58:49,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:58:49,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155300822] [2024-11-10 17:58:49,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:58:49,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:58:49,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:58:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:58:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:58:49,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 87 [2024-11-10 17:58:49,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 42 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:49,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:58:49,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 87 [2024-11-10 17:58:49,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:58:49,961 INFO L124 PetriNetUnfolderBase]: 2569/4017 cut-off events. [2024-11-10 17:58:49,961 INFO L125 PetriNetUnfolderBase]: For 3448/3451 co-relation queries the response was YES. [2024-11-10 17:58:49,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10937 conditions, 4017 events. 2569/4017 cut-off events. For 3448/3451 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 20349 event pairs, 421 based on Foata normal form. 16/3965 useless extension candidates. Maximal degree in co-relation 10921. Up to 2144 conditions per place. [2024-11-10 17:58:49,977 INFO L140 encePairwiseOnDemand]: 80/87 looper letters, 52 selfloop transitions, 3 changer transitions 25/86 dead transitions. [2024-11-10 17:58:49,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 529 flow [2024-11-10 17:58:49,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 17:58:49,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 17:58:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 127 transitions. [2024-11-10 17:58:49,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24329501915708812 [2024-11-10 17:58:49,979 INFO L175 Difference]: Start difference. First operand has 60 places, 42 transitions, 185 flow. Second operand 6 states and 127 transitions. [2024-11-10 17:58:49,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 529 flow [2024-11-10 17:58:49,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 86 transitions, 416 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-11-10 17:58:49,997 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 147 flow [2024-11-10 17:58:49,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-11-10 17:58:49,998 INFO L277 CegarLoopForPetriNet]: 83 programPoint places, -22 predicate places. [2024-11-10 17:58:49,998 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 147 flow [2024-11-10 17:58:49,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:58:49,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:58:49,999 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, 1, 1, 1, 1] [2024-11-10 17:58:49,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:58:49,999 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [P0Err4ASSERT_VIOLATIONMEMORY_LEAK, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2024-11-10 17:58:49,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:58:49,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1952719219, now seen corresponding path program 2 times [2024-11-10 17:58:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:58:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415547962] [2024-11-10 17:58:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:58:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:58:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat