./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_ok.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/queue_ok.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 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 17:45:31,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 17:45:31,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 17:45:31,439 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 17:45:31,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 17:45:31,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 17:45:31,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 17:45:31,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 17:45:31,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 17:45:31,475 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 17:45:31,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 17:45:31,475 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 17:45:31,476 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 17:45:31,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 17:45:31,478 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 17:45:31,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 17:45:31,479 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 17:45:31,479 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 17:45:31,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 17:45:31,479 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 17:45:31,480 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 17:45:31,480 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 17:45:31,480 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 17:45:31,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 17:45:31,481 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 17:45:31,481 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 17:45:31,482 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 17:45:31,482 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 17:45:31,482 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 17:45:31,482 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 17:45:31,483 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 17:45:31,483 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 17:45:31,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 17:45:31,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:31,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 17:45:31,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 17:45:31,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 17:45:31,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 17:45:31,485 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 17:45:31,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 17:45:31,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 17:45:31,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 17:45:31,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cc273f13a619f37768d5108c297b75ab7c37145fe391daced9c134730721251 [2024-11-10 17:45:31,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 17:45:31,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 17:45:31,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 17:45:31,823 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 17:45:31,823 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 17:45:31,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok.i [2024-11-10 17:45:33,316 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 17:45:33,581 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 17:45:33,582 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok.i [2024-11-10 17:45:33,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6141c783a/184484b6dc114d2eb8e4912d38e234c5/FLAG9bd5bc309 [2024-11-10 17:45:33,894 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6141c783a/184484b6dc114d2eb8e4912d38e234c5 [2024-11-10 17:45:33,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 17:45:33,897 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 17:45:33,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:33,899 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 17:45:33,903 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 17:45:33,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:33" (1/1) ... [2024-11-10 17:45:33,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52c6eb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:33, skipping insertion in model container [2024-11-10 17:45:33,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 05:45:33" (1/1) ... [2024-11-10 17:45:33,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 17:45:34,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:34,424 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 17:45:34,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 17:45:34,584 INFO L204 MainTranslator]: Completed translation [2024-11-10 17:45:34,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34 WrapperNode [2024-11-10 17:45:34,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 17:45:34,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:34,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 17:45:34,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 17:45:34,595 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,665 INFO L138 Inliner]: procedures = 274, calls = 94, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 239 [2024-11-10 17:45:34,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 17:45:34,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 17:45:34,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 17:45:34,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 17:45:34,680 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,720 INFO L175 MemorySlicer]: Split 75 memory accesses to 4 slices as follows [2, 5, 22, 46]. 61 percent of accesses are in the largest equivalence class. The 50 initializations are split as follows [2, 5, 20, 23]. The 11 writes are split as follows [0, 0, 1, 10]. [2024-11-10 17:45:34,721 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,735 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,740 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,748 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,755 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 17:45:34,760 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 17:45:34,760 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 17:45:34,760 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 17:45:34,761 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (1/1) ... [2024-11-10 17:45:34,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 17:45:34,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:34,790 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 17:45:34,793 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 17:45:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-10 17:45:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-10 17:45:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-10 17:45:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-10 17:45:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 17:45:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 17:45:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 17:45:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-10 17:45:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-10 17:45:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 17:45:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 17:45:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-10 17:45:34,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 17:45:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-10 17:45:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 17:45:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 17:45:34,854 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 17:45:35,008 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 17:45:35,010 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 17:45:35,491 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 17:45:35,491 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 17:45:35,777 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 17:45:35,778 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 17:45:35,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:35 BoogieIcfgContainer [2024-11-10 17:45:35,779 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 17:45:35,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 17:45:35,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 17:45:35,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 17:45:35,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 05:45:33" (1/3) ... [2024-11-10 17:45:35,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723ec1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:35, skipping insertion in model container [2024-11-10 17:45:35,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 05:45:34" (2/3) ... [2024-11-10 17:45:35,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723ec1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 05:45:35, skipping insertion in model container [2024-11-10 17:45:35,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 05:45:35" (3/3) ... [2024-11-10 17:45:35,790 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok.i [2024-11-10 17:45:35,826 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 17:45:35,826 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2024-11-10 17:45:35,826 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 17:45:35,933 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-10 17:45:35,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 135 transitions, 284 flow [2024-11-10 17:45:36,033 INFO L124 PetriNetUnfolderBase]: 13/133 cut-off events. [2024-11-10 17:45:36,033 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 17:45:36,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 13/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 423 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 105. Up to 3 conditions per place. [2024-11-10 17:45:36,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 135 transitions, 284 flow [2024-11-10 17:45:36,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 132 transitions, 276 flow [2024-11-10 17:45:36,060 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 17:45:36,068 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;@689f87ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 17:45:36,068 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-10 17:45:36,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 17:45:36,075 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-10 17:45:36,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 17:45:36,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:36,076 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 17:45:36,077 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:36,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash 21899, now seen corresponding path program 1 times [2024-11-10 17:45:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:36,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925869077] [2024-11-10 17:45:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:36,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:36,429 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 17:45:36,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:36,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925869077] [2024-11-10 17:45:36,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925869077] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:36,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:36,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:36,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349644985] [2024-11-10 17:45:36,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:36,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:36,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:36,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:36,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:36,587 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 135 [2024-11-10 17:45:36,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 17:45:36,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:36,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 135 [2024-11-10 17:45:36,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:37,093 INFO L124 PetriNetUnfolderBase]: 1078/2941 cut-off events. [2024-11-10 17:45:37,094 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-10 17:45:37,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2941 events. 1078/2941 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23291 event pairs, 830 based on Foata normal form. 137/2233 useless extension candidates. Maximal degree in co-relation 4509. Up to 1672 conditions per place. [2024-11-10 17:45:37,116 INFO L140 encePairwiseOnDemand]: 125/135 looper letters, 46 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-10 17:45:37,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 344 flow [2024-11-10 17:45:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:37,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-10 17:45:37,130 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864197530864198 [2024-11-10 17:45:37,132 INFO L175 Difference]: Start difference. First operand has 126 places, 132 transitions, 276 flow. Second operand 3 states and 278 transitions. [2024-11-10 17:45:37,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 344 flow [2024-11-10 17:45:37,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:37,141 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 244 flow [2024-11-10 17:45:37,144 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2024-11-10 17:45:37,147 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -10 predicate places. [2024-11-10 17:45:37,148 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 244 flow [2024-11-10 17:45:37,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 17:45:37,148 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:37,148 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-10 17:45:37,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 17:45:37,149 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:37,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 21900, now seen corresponding path program 1 times [2024-11-10 17:45:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232509032] [2024-11-10 17:45:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:37,299 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 17:45:37,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:37,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232509032] [2024-11-10 17:45:37,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232509032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:37,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:37,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:37,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798679912] [2024-11-10 17:45:37,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:37,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:37,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:37,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:37,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:37,392 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 135 [2024-11-10 17:45:37,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 17:45:37,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:37,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 135 [2024-11-10 17:45:37,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:37,759 INFO L124 PetriNetUnfolderBase]: 1078/2938 cut-off events. [2024-11-10 17:45:37,759 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-10 17:45:37,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4630 conditions, 2938 events. 1078/2938 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23243 event pairs, 830 based on Foata normal form. 3/2098 useless extension candidates. Maximal degree in co-relation 4619. Up to 1672 conditions per place. [2024-11-10 17:45:37,778 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 46 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-10 17:45:37,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 115 transitions, 334 flow [2024-11-10 17:45:37,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:37,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:37,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2024-11-10 17:45:37,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-11-10 17:45:37,783 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 244 flow. Second operand 3 states and 273 transitions. [2024-11-10 17:45:37,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 115 transitions, 334 flow [2024-11-10 17:45:37,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:37,787 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 238 flow [2024-11-10 17:45:37,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=113, PETRI_TRANSITIONS=115} [2024-11-10 17:45:37,788 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -13 predicate places. [2024-11-10 17:45:37,788 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 238 flow [2024-11-10 17:45:37,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 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 17:45:37,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:37,789 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 17:45:37,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 17:45:37,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:37,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:37,790 INFO L85 PathProgramCache]: Analyzing trace with hash 652956999, now seen corresponding path program 1 times [2024-11-10 17:45:37,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:37,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411387950] [2024-11-10 17:45:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:37,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:37,884 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 17:45:37,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411387950] [2024-11-10 17:45:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411387950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:37,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265193787] [2024-11-10 17:45:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:37,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:37,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:37,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:38,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-10 17:45:38,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:38,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:38,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-10 17:45:38,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:38,367 INFO L124 PetriNetUnfolderBase]: 1078/2936 cut-off events. [2024-11-10 17:45:38,368 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-10 17:45:38,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4628 conditions, 2936 events. 1078/2936 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23228 event pairs, 830 based on Foata normal form. 1/2096 useless extension candidates. Maximal degree in co-relation 4617. Up to 1671 conditions per place. [2024-11-10 17:45:38,384 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 45 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-10 17:45:38,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 330 flow [2024-11-10 17:45:38,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2024-11-10 17:45:38,390 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-10 17:45:38,390 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 238 flow. Second operand 4 states and 350 transitions. [2024-11-10 17:45:38,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 330 flow [2024-11-10 17:45:38,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 326 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:38,394 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 236 flow [2024-11-10 17:45:38,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=112, PETRI_TRANSITIONS=113} [2024-11-10 17:45:38,396 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -14 predicate places. [2024-11-10 17:45:38,396 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 236 flow [2024-11-10 17:45:38,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:38,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:38,396 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-10 17:45:38,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 17:45:38,397 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:38,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:38,397 INFO L85 PathProgramCache]: Analyzing trace with hash 652957000, now seen corresponding path program 1 times [2024-11-10 17:45:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:38,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342553256] [2024-11-10 17:45:38,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:38,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:38,604 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 17:45:38,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:38,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342553256] [2024-11-10 17:45:38,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342553256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:38,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:38,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:38,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453648978] [2024-11-10 17:45:38,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:38,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:38,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:38,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:38,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:38,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-10 17:45:38,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 113 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:38,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:38,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-10 17:45:38,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:39,044 INFO L124 PetriNetUnfolderBase]: 1078/2934 cut-off events. [2024-11-10 17:45:39,044 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-10 17:45:39,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4627 conditions, 2934 events. 1078/2934 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23263 event pairs, 830 based on Foata normal form. 2/2096 useless extension candidates. Maximal degree in co-relation 4612. Up to 1671 conditions per place. [2024-11-10 17:45:39,060 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 45 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-10 17:45:39,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 328 flow [2024-11-10 17:45:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:39,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2024-11-10 17:45:39,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-10 17:45:39,063 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 236 flow. Second operand 4 states and 350 transitions. [2024-11-10 17:45:39,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 328 flow [2024-11-10 17:45:39,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:39,065 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 232 flow [2024-11-10 17:45:39,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=110, PETRI_TRANSITIONS=111} [2024-11-10 17:45:39,067 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -16 predicate places. [2024-11-10 17:45:39,067 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 232 flow [2024-11-10 17:45:39,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.75) internal successors, (303), 4 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:39,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:39,068 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:39,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 17:45:39,069 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:39,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:39,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1848786575, now seen corresponding path program 1 times [2024-11-10 17:45:39,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:39,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712535606] [2024-11-10 17:45:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:39,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:39,192 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 17:45:39,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:39,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712535606] [2024-11-10 17:45:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712535606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:39,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:39,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:39,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071593793] [2024-11-10 17:45:39,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:39,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:39,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:39,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:39,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:39,346 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2024-11-10 17:45:39,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 17:45:39,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:39,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2024-11-10 17:45:39,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:39,704 INFO L124 PetriNetUnfolderBase]: 1038/2625 cut-off events. [2024-11-10 17:45:39,705 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-10 17:45:39,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4278 conditions, 2625 events. 1038/2625 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 19584 event pairs, 422 based on Foata normal form. 120/2194 useless extension candidates. Maximal degree in co-relation 4263. Up to 870 conditions per place. [2024-11-10 17:45:39,726 INFO L140 encePairwiseOnDemand]: 124/135 looper letters, 68 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-11-10 17:45:39,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 405 flow [2024-11-10 17:45:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2024-11-10 17:45:39,728 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2024-11-10 17:45:39,728 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 232 flow. Second operand 4 states and 355 transitions. [2024-11-10 17:45:39,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 405 flow [2024-11-10 17:45:39,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 399 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:39,732 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 216 flow [2024-11-10 17:45:39,732 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-11-10 17:45:39,733 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -24 predicate places. [2024-11-10 17:45:39,733 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 216 flow [2024-11-10 17:45:39,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.75) internal successors, (287), 4 states have internal predecessors, (287), 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 17:45:39,734 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:39,734 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:39,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 17:45:39,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:39,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:39,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1848786574, now seen corresponding path program 1 times [2024-11-10 17:45:39,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:39,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629055307] [2024-11-10 17:45:39,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:39,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:40,035 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 17:45:40,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:40,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629055307] [2024-11-10 17:45:40,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629055307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:40,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:40,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 17:45:40,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539632146] [2024-11-10 17:45:40,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:40,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 17:45:40,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:40,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 17:45:40,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 17:45:40,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2024-11-10 17:45:40,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 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 17:45:40,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:40,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2024-11-10 17:45:40,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:40,781 INFO L124 PetriNetUnfolderBase]: 1038/2357 cut-off events. [2024-11-10 17:45:40,781 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-10 17:45:40,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 2357 events. 1038/2357 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16022 event pairs, 422 based on Foata normal form. 120/2040 useless extension candidates. Maximal degree in co-relation 1965. Up to 869 conditions per place. [2024-11-10 17:45:40,802 INFO L140 encePairwiseOnDemand]: 124/135 looper letters, 68 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2024-11-10 17:45:40,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 393 flow [2024-11-10 17:45:40,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 17:45:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 17:45:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 424 transitions. [2024-11-10 17:45:40,805 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6281481481481481 [2024-11-10 17:45:40,805 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 216 flow. Second operand 5 states and 424 transitions. [2024-11-10 17:45:40,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 393 flow [2024-11-10 17:45:40,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 119 transitions, 387 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-10 17:45:40,809 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 204 flow [2024-11-10 17:45:40,810 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2024-11-10 17:45:40,811 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -30 predicate places. [2024-11-10 17:45:40,811 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 204 flow [2024-11-10 17:45:40,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.0) internal successors, (426), 6 states have internal predecessors, (426), 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 17:45:40,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:40,812 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:40,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 17:45:40,812 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:40,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1477808321, now seen corresponding path program 1 times [2024-11-10 17:45:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440012746] [2024-11-10 17:45:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:41,332 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 17:45:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440012746] [2024-11-10 17:45:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440012746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:41,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:41,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 17:45:41,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994242341] [2024-11-10 17:45:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:41,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 17:45:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 17:45:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 17:45:41,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 135 [2024-11-10 17:45:41,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 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 17:45:41,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:41,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 135 [2024-11-10 17:45:41,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:42,298 INFO L124 PetriNetUnfolderBase]: 2060/4323 cut-off events. [2024-11-10 17:45:42,299 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-10 17:45:42,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 4323 events. 2060/4323 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 31023 event pairs, 290 based on Foata normal form. 0/3588 useless extension candidates. Maximal degree in co-relation 2895. Up to 2158 conditions per place. [2024-11-10 17:45:42,320 INFO L140 encePairwiseOnDemand]: 126/135 looper letters, 134 selfloop transitions, 11 changer transitions 0/187 dead transitions. [2024-11-10 17:45:42,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 187 transitions, 683 flow [2024-11-10 17:45:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:45:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:45:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2024-11-10 17:45:42,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-11-10 17:45:42,323 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 204 flow. Second operand 7 states and 574 transitions. [2024-11-10 17:45:42,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 187 transitions, 683 flow [2024-11-10 17:45:42,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 187 transitions, 673 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:42,329 INFO L231 Difference]: Finished difference. Result has 102 places, 106 transitions, 270 flow [2024-11-10 17:45:42,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=102, PETRI_TRANSITIONS=106} [2024-11-10 17:45:42,330 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -24 predicate places. [2024-11-10 17:45:42,330 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 106 transitions, 270 flow [2024-11-10 17:45:42,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 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 17:45:42,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:42,331 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:42,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 17:45:42,332 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:42,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:42,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1277758667, now seen corresponding path program 1 times [2024-11-10 17:45:42,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:42,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320808964] [2024-11-10 17:45:42,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:42,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:42,441 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 17:45:42,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:42,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320808964] [2024-11-10 17:45:42,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320808964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:42,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:42,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:42,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799034428] [2024-11-10 17:45:42,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:42,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:42,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:42,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:42,540 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-10 17:45:42,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 106 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:42,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:42,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-10 17:45:42,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:43,014 INFO L124 PetriNetUnfolderBase]: 1777/4165 cut-off events. [2024-11-10 17:45:43,015 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2024-11-10 17:45:43,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 4165 events. 1777/4165 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 32269 event pairs, 1231 based on Foata normal form. 64/3414 useless extension candidates. Maximal degree in co-relation 7166. Up to 2597 conditions per place. [2024-11-10 17:45:43,039 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 75 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-11-10 17:45:43,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 126 transitions, 487 flow [2024-11-10 17:45:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 368 transitions. [2024-11-10 17:45:43,041 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2024-11-10 17:45:43,042 INFO L175 Difference]: Start difference. First operand has 102 places, 106 transitions, 270 flow. Second operand 4 states and 368 transitions. [2024-11-10 17:45:43,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 126 transitions, 487 flow [2024-11-10 17:45:43,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 126 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:43,046 INFO L231 Difference]: Finished difference. Result has 102 places, 104 transitions, 270 flow [2024-11-10 17:45:43,046 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=102, PETRI_TRANSITIONS=104} [2024-11-10 17:45:43,050 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -24 predicate places. [2024-11-10 17:45:43,050 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 104 transitions, 270 flow [2024-11-10 17:45:43,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 17:45:43,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:43,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:43,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 17:45:43,051 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:43,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1277758666, now seen corresponding path program 1 times [2024-11-10 17:45:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188044564] [2024-11-10 17:45:43,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:43,123 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 17:45:43,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:43,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188044564] [2024-11-10 17:45:43,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188044564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:43,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:43,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:43,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363883806] [2024-11-10 17:45:43,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:43,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:43,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:43,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:43,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:43,128 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 135 [2024-11-10 17:45:43,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 104 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 17:45:43,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:43,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 135 [2024-11-10 17:45:43,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:43,332 INFO L124 PetriNetUnfolderBase]: 692/1675 cut-off events. [2024-11-10 17:45:43,332 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-10 17:45:43,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 1675 events. 692/1675 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10160 event pairs, 446 based on Foata normal form. 45/1487 useless extension candidates. Maximal degree in co-relation 3112. Up to 695 conditions per place. [2024-11-10 17:45:43,340 INFO L140 encePairwiseOnDemand]: 131/135 looper letters, 61 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-10 17:45:43,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 112 transitions, 405 flow [2024-11-10 17:45:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:43,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-11-10 17:45:43,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2024-11-10 17:45:43,341 INFO L175 Difference]: Start difference. First operand has 102 places, 104 transitions, 270 flow. Second operand 3 states and 292 transitions. [2024-11-10 17:45:43,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 112 transitions, 405 flow [2024-11-10 17:45:43,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 397 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-11-10 17:45:43,347 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 253 flow [2024-11-10 17:45:43,348 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-11-10 17:45:43,348 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -26 predicate places. [2024-11-10 17:45:43,349 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 253 flow [2024-11-10 17:45:43,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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 17:45:43,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:43,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:43,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 17:45:43,351 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:43,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:43,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1462448518, now seen corresponding path program 1 times [2024-11-10 17:45:43,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:43,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062155237] [2024-11-10 17:45:43,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:43,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:43,430 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 17:45:43,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:43,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062155237] [2024-11-10 17:45:43,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062155237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:43,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:43,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:43,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510727377] [2024-11-10 17:45:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:43,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:43,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:43,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-10 17:45:43,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 17:45:43,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:43,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-10 17:45:43,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:43,676 INFO L124 PetriNetUnfolderBase]: 692/1645 cut-off events. [2024-11-10 17:45:43,676 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-10 17:45:43,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3162 conditions, 1645 events. 692/1645 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 9841 event pairs, 610 based on Foata normal form. 7/1437 useless extension candidates. Maximal degree in co-relation 1597. Up to 1207 conditions per place. [2024-11-10 17:45:43,683 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 51 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2024-11-10 17:45:43,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 353 flow [2024-11-10 17:45:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2024-11-10 17:45:43,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-10 17:45:43,685 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 253 flow. Second operand 3 states and 275 transitions. [2024-11-10 17:45:43,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 353 flow [2024-11-10 17:45:43,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:43,687 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 245 flow [2024-11-10 17:45:43,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=98, PETRI_TRANSITIONS=98} [2024-11-10 17:45:43,689 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -28 predicate places. [2024-11-10 17:45:43,689 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 245 flow [2024-11-10 17:45:43,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 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 17:45:43,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:43,690 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 17:45:43,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 17:45:43,690 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:43,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1462448517, now seen corresponding path program 1 times [2024-11-10 17:45:43,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:43,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858200976] [2024-11-10 17:45:43,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:43,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:43,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:43,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:43,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858200976] [2024-11-10 17:45:43,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858200976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:43,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:43,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 17:45:43,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645635749] [2024-11-10 17:45:43,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:43,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 17:45:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:43,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 17:45:43,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 17:45:43,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-10 17:45:43,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 98 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 17:45:43,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:43,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-10 17:45:43,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:44,165 INFO L124 PetriNetUnfolderBase]: 602/1392 cut-off events. [2024-11-10 17:45:44,165 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-10 17:45:44,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2695 conditions, 1392 events. 602/1392 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7192 event pairs, 410 based on Foata normal form. 12/1231 useless extension candidates. Maximal degree in co-relation 2684. Up to 809 conditions per place. [2024-11-10 17:45:44,171 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 64 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-10 17:45:44,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 403 flow [2024-11-10 17:45:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 17:45:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 17:45:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2024-11-10 17:45:44,173 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-10 17:45:44,174 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 245 flow. Second operand 4 states and 369 transitions. [2024-11-10 17:45:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 403 flow [2024-11-10 17:45:44,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 111 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:44,176 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 253 flow [2024-11-10 17:45:44,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=253, PETRI_PLACES=101, PETRI_TRANSITIONS=98} [2024-11-10 17:45:44,177 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -25 predicate places. [2024-11-10 17:45:44,177 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 253 flow [2024-11-10 17:45:44,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 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 17:45:44,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:44,178 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] [2024-11-10 17:45:44,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 17:45:44,178 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:44,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1448445541, now seen corresponding path program 1 times [2024-11-10 17:45:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040627227] [2024-11-10 17:45:44,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:44,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:44,225 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 17:45:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040627227] [2024-11-10 17:45:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040627227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:44,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 17:45:44,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-10 17:45:44,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179885598] [2024-11-10 17:45:44,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:44,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 17:45:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:44,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 17:45:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 17:45:44,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 135 [2024-11-10 17:45:44,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 253 flow. Second operand has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 17:45:44,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:44,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 135 [2024-11-10 17:45:44,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:44,436 INFO L124 PetriNetUnfolderBase]: 572/1364 cut-off events. [2024-11-10 17:45:44,436 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-10 17:45:44,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2678 conditions, 1364 events. 572/1364 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 7148 event pairs, 515 based on Foata normal form. 3/1210 useless extension candidates. Maximal degree in co-relation 2665. Up to 1010 conditions per place. [2024-11-10 17:45:44,444 INFO L140 encePairwiseOnDemand]: 133/135 looper letters, 48 selfloop transitions, 1 changer transitions 3/97 dead transitions. [2024-11-10 17:45:44,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 355 flow [2024-11-10 17:45:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 17:45:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 17:45:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-11-10 17:45:44,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839506172839506 [2024-11-10 17:45:44,446 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 253 flow. Second operand 3 states and 277 transitions. [2024-11-10 17:45:44,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 355 flow [2024-11-10 17:45:44,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 17:45:44,449 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 241 flow [2024-11-10 17:45:44,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-10 17:45:44,449 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -26 predicate places. [2024-11-10 17:45:44,450 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 241 flow [2024-11-10 17:45:44,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 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 17:45:44,450 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:44,450 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 17:45:44,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 17:45:44,451 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:44,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:44,451 INFO L85 PathProgramCache]: Analyzing trace with hash 2110734724, now seen corresponding path program 1 times [2024-11-10 17:45:44,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:44,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61424800] [2024-11-10 17:45:44,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:44,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:44,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:44,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61424800] [2024-11-10 17:45:44,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61424800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:45:44,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097731846] [2024-11-10 17:45:44,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:44,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:44,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:44,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:45:44,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 17:45:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:45,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-10 17:45:45,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:45,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 17:45:45,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 17:45:45,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:45:45,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 17:45:45,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 17:45:45,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:45,381 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 17:45:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097731846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 17:45:45,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 17:45:45,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 12 [2024-11-10 17:45:45,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700615216] [2024-11-10 17:45:45,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 17:45:45,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 17:45:45,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:45:45,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 17:45:45,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-10 17:45:45,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 135 [2024-11-10 17:45:45,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 241 flow. Second operand has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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 17:45:45,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 17:45:45,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 135 [2024-11-10 17:45:45,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 17:45:46,068 INFO L124 PetriNetUnfolderBase]: 619/1368 cut-off events. [2024-11-10 17:45:46,069 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-11-10 17:45:46,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1368 events. 619/1368 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6716 event pairs, 153 based on Foata normal form. 0/1240 useless extension candidates. Maximal degree in co-relation 2751. Up to 724 conditions per place. [2024-11-10 17:45:46,076 INFO L140 encePairwiseOnDemand]: 126/135 looper letters, 81 selfloop transitions, 8 changer transitions 3/129 dead transitions. [2024-11-10 17:45:46,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 497 flow [2024-11-10 17:45:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 17:45:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 17:45:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2024-11-10 17:45:46,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6232804232804233 [2024-11-10 17:45:46,078 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 241 flow. Second operand 7 states and 589 transitions. [2024-11-10 17:45:46,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 497 flow [2024-11-10 17:45:46,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 494 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 17:45:46,081 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 267 flow [2024-11-10 17:45:46,081 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=267, PETRI_PLACES=105, PETRI_TRANSITIONS=95} [2024-11-10 17:45:46,082 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -21 predicate places. [2024-11-10 17:45:46,082 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 267 flow [2024-11-10 17:45:46,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 73.75) internal successors, (590), 8 states have internal predecessors, (590), 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 17:45:46,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 17:45:46,082 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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 17:45:46,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 17:45:46,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 17:45:46,287 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-10 17:45:46,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 17:45:46,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1847868473, now seen corresponding path program 1 times [2024-11-10 17:45:46,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 17:45:46,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144888816] [2024-11-10 17:45:46,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:46,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 17:45:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:47,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:47,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 17:45:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144888816] [2024-11-10 17:45:47,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144888816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 17:45:47,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142460584] [2024-11-10 17:45:47,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 17:45:47,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 17:45:47,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 17:45:47,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 17:45:47,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 17:45:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 17:45:47,738 INFO L255 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-10 17:45:47,741 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 17:45:47,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-10 17:45:47,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 17:45:48,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:45:48,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-10 17:45:48,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-10 17:45:48,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-10 17:45:48,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:45:48,304 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 17:46:04,704 INFO L349 Elim1Store]: treesize reduction 47, result has 52.5 percent of original size [2024-11-10 17:46:04,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 116 treesize of output 146 [2024-11-10 17:46:04,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 17:46:04,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 111 [2024-11-10 17:46:04,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-10 17:46:04,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 17:46:04,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 73 [2024-11-10 17:46:04,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:46:04,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:46:04,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 17:46:04,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 47 [2024-11-10 17:46:04,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2024-11-10 17:46:04,911 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-10 17:46:04,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 17:46:04,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-10 17:46:04,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 17:46:04,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142460584] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 17:46:04,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 17:46:04,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 11] total 32 [2024-11-10 17:46:04,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788274091] [2024-11-10 17:46:04,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 17:46:04,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-10 17:46:04,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 17:46:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-10 17:46:04,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=949, Unknown=3, NotChecked=0, Total=1122 [2024-11-10 17:46:06,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:10,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:14,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:18,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:22,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:26,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:31,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:36,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:40,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:44,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:47,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:52,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:46:57,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:47:01,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:47:04,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-10 17:47:05,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]