./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d 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_longer.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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:05:06,880 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:05:06,964 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:05:06,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:05:06,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:05:06,998 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:05:06,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:05:06,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:05:07,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:05:07,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:05:07,001 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:05:07,001 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:05:07,002 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:05:07,003 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:05:07,003 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:05:07,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:05:07,004 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:05:07,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:05:07,004 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:05:07,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:05:07,005 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:05:07,006 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:05:07,007 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:05:07,007 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:05:07,007 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:05:07,007 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:05:07,008 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:05:07,008 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:05:07,008 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:05:07,008 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:05:07,009 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:05:07,009 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:05:07,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:05:07,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:05:07,012 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:05:07,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:05:07,012 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:05:07,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:05:07,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:05:07,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:05:07,013 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:05:07,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:05:07,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2024-11-17 03:05:07,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:05:07,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:05:07,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:05:07,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:05:07,293 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:05:07,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-17 03:05:08,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:05:09,005 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:05:09,005 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/queue_ok_longer.i [2024-11-17 03:05:09,022 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b5a88ff/6eee200ed3374b03816f82342e694fe9/FLAGf4ce5d575 [2024-11-17 03:05:09,331 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b5a88ff/6eee200ed3374b03816f82342e694fe9 [2024-11-17 03:05:09,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:05:09,335 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:05:09,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:05:09,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:05:09,342 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:05:09,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:05:09" (1/1) ... [2024-11-17 03:05:09,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f62c050 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:09, skipping insertion in model container [2024-11-17 03:05:09,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:05:09" (1/1) ... [2024-11-17 03:05:09,394 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:05:09,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:05:09,863 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:05:09,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:05:10,124 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:05:10,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10 WrapperNode [2024-11-17 03:05:10,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:05:10,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:05:10,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:05:10,127 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:05:10,134 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,256 INFO L138 Inliner]: procedures = 274, calls = 854, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 999 [2024-11-17 03:05:10,256 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:05:10,258 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:05:10,259 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:05:10,259 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:05:10,269 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,318 INFO L175 MemorySlicer]: Split 835 memory accesses to 4 slices as follows [426, 2, 5, 402]. 51 percent of accesses are in the largest equivalence class. The 810 initializations are split as follows [403, 2, 5, 400]. The 11 writes are split as follows [10, 0, 0, 1]. [2024-11-17 03:05:10,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,356 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,371 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,383 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:05:10,384 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:05:10,384 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:05:10,384 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:05:10,385 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (1/1) ... [2024-11-17 03:05:10,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:05:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:05:10,423 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) [2024-11-17 03:05:10,426 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 [2024-11-17 03:05:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-11-17 03:05:10,472 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-11-17 03:05:10,472 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-11-17 03:05:10,473 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-11-17 03:05:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-17 03:05:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:05:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:05:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:05:10,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:05:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:05:10,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:05:10,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:05:10,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:05:10,475 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-17 03:05:10,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:05:10,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:05:10,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:05:10,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:05:10,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:05:10,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:05:10,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:05:10,479 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:05:10,659 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:05:10,662 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:05:11,910 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:05:11,910 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:05:19,522 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:05:19,525 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:05:19,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:05:19 BoogieIcfgContainer [2024-11-17 03:05:19,526 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:05:19,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:05:19,530 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:05:19,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:05:19,538 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:05:09" (1/3) ... [2024-11-17 03:05:19,538 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94df87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:05:19, skipping insertion in model container [2024-11-17 03:05:19,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:05:10" (2/3) ... [2024-11-17 03:05:19,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a94df87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:05:19, skipping insertion in model container [2024-11-17 03:05:19,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:05:19" (3/3) ... [2024-11-17 03:05:19,540 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2024-11-17 03:05:19,558 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:05:19,558 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2024-11-17 03:05:19,559 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:05:19,676 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-17 03:05:19,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 135 transitions, 284 flow [2024-11-17 03:05:19,801 INFO L124 PetriNetUnfolderBase]: 13/133 cut-off events. [2024-11-17 03:05:19,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:05:19,807 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. [2024-11-17 03:05:19,808 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 135 transitions, 284 flow [2024-11-17 03:05:19,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 132 transitions, 276 flow [2024-11-17 03:05:19,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:05:19,836 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;@19ebc166, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:05:19,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2024-11-17 03:05:19,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:05:19,860 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-17 03:05:19,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:05:19,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:19,862 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:05:19,863 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)] === [2024-11-17 03:05:19,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash 70539, now seen corresponding path program 1 times [2024-11-17 03:05:19,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:19,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985907277] [2024-11-17 03:05:19,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:20,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:20,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985907277] [2024-11-17 03:05:20,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985907277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:20,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:20,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:05:20,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411826544] [2024-11-17 03:05:20,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:20,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:05:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:05:20,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:05:20,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 135 [2024-11-17 03:05:20,984 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) [2024-11-17 03:05:20,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:20,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 135 [2024-11-17 03:05:20,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:21,493 INFO L124 PetriNetUnfolderBase]: 1078/2941 cut-off events. [2024-11-17 03:05:21,494 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-11-17 03:05:21,504 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. [2024-11-17 03:05:21,524 INFO L140 encePairwiseOnDemand]: 125/135 looper letters, 46 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-17 03:05:21,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 344 flow [2024-11-17 03:05:21,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:05:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:05:21,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2024-11-17 03:05:21,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6864197530864198 [2024-11-17 03:05:21,543 INFO L175 Difference]: Start difference. First operand has 126 places, 132 transitions, 276 flow. Second operand 3 states and 278 transitions. [2024-11-17 03:05:21,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 344 flow [2024-11-17 03:05:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 336 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:05:21,553 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 244 flow [2024-11-17 03:05:21,555 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} [2024-11-17 03:05:21,561 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -10 predicate places. [2024-11-17 03:05:21,562 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 244 flow [2024-11-17 03:05:21,563 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) [2024-11-17 03:05:21,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:21,563 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-17 03:05:21,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:05:21,564 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)] === [2024-11-17 03:05:21,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:21,565 INFO L85 PathProgramCache]: Analyzing trace with hash 70540, now seen corresponding path program 1 times [2024-11-17 03:05:21,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:21,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12828237] [2024-11-17 03:05:21,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:21,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:22,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:22,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12828237] [2024-11-17 03:05:22,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12828237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:22,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:05:22,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100176669] [2024-11-17 03:05:22,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:22,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:05:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:05:22,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:05:22,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 135 [2024-11-17 03:05:22,185 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) [2024-11-17 03:05:22,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:22,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 135 [2024-11-17 03:05:22,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:22,668 INFO L124 PetriNetUnfolderBase]: 1078/2938 cut-off events. [2024-11-17 03:05:22,668 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-17 03:05:22,674 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. [2024-11-17 03:05:22,690 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 46 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2024-11-17 03:05:22,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 115 transitions, 334 flow [2024-11-17 03:05:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:05:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:05:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2024-11-17 03:05:22,695 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.674074074074074 [2024-11-17 03:05:22,695 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 244 flow. Second operand 3 states and 273 transitions. [2024-11-17 03:05:22,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 115 transitions, 334 flow [2024-11-17 03:05:22,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:05:22,700 INFO L231 Difference]: Finished difference. Result has 113 places, 115 transitions, 238 flow [2024-11-17 03:05:22,701 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} [2024-11-17 03:05:22,701 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -13 predicate places. [2024-11-17 03:05:22,702 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 115 transitions, 238 flow [2024-11-17 03:05:22,702 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) [2024-11-17 03:05:22,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:22,703 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 03:05:22,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:05:22,704 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)] === [2024-11-17 03:05:22,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2103500599, now seen corresponding path program 1 times [2024-11-17 03:05:22,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:22,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069713328] [2024-11-17 03:05:22,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:22,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069713328] [2024-11-17 03:05:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069713328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:23,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:05:23,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821212946] [2024-11-17 03:05:23,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:23,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:05:23,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:05:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:05:23,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2024-11-17 03:05:23,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 115 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2024-11-17 03:05:23,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:23,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2024-11-17 03:05:23,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:23,509 INFO L124 PetriNetUnfolderBase]: 1078/2936 cut-off events. [2024-11-17 03:05:23,510 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-17 03:05:23,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2936 events. 1078/2936 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 23264 event pairs, 830 based on Foata normal form. 0/2096 useless extension candidates. Maximal degree in co-relation 4618. Up to 1671 conditions per place. [2024-11-17 03:05:23,529 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 48 selfloop transitions, 3 changer transitions 0/113 dead transitions. [2024-11-17 03:05:23,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 336 flow [2024-11-17 03:05:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:05:23,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:05:23,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2024-11-17 03:05:23,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6092592592592593 [2024-11-17 03:05:23,532 INFO L175 Difference]: Start difference. First operand has 113 places, 115 transitions, 238 flow. Second operand 4 states and 329 transitions. [2024-11-17 03:05:23,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 336 flow [2024-11-17 03:05:23,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 332 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:05:23,535 INFO L231 Difference]: Finished difference. Result has 112 places, 113 transitions, 236 flow [2024-11-17 03:05:23,535 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} [2024-11-17 03:05:23,535 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -14 predicate places. [2024-11-17 03:05:23,536 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 113 transitions, 236 flow [2024-11-17 03:05:23,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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) [2024-11-17 03:05:23,536 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:23,536 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-17 03:05:23,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:05:23,537 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)] === [2024-11-17 03:05:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:23,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2103500600, now seen corresponding path program 1 times [2024-11-17 03:05:23,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:23,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614151889] [2024-11-17 03:05:23,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:23,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:23,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:23,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614151889] [2024-11-17 03:05:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614151889] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:23,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:05:23,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100481013] [2024-11-17 03:05:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:23,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:05:23,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:05:23,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:05:24,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-17 03:05:24,160 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) [2024-11-17 03:05:24,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:24,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-17 03:05:24,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:24,579 INFO L124 PetriNetUnfolderBase]: 1078/2934 cut-off events. [2024-11-17 03:05:24,580 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 03:05:24,586 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. [2024-11-17 03:05:24,600 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 45 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-17 03:05:24,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 328 flow [2024-11-17 03:05:24,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:05:24,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:05:24,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2024-11-17 03:05:24,603 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-11-17 03:05:24,603 INFO L175 Difference]: Start difference. First operand has 112 places, 113 transitions, 236 flow. Second operand 4 states and 350 transitions. [2024-11-17 03:05:24,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 328 flow [2024-11-17 03:05:24,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 322 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:05:24,606 INFO L231 Difference]: Finished difference. Result has 110 places, 111 transitions, 232 flow [2024-11-17 03:05:24,606 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} [2024-11-17 03:05:24,607 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -16 predicate places. [2024-11-17 03:05:24,607 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 111 transitions, 232 flow [2024-11-17 03:05:24,608 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) [2024-11-17 03:05:24,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:24,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:05:24,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:05:24,608 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:24,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2000572047, now seen corresponding path program 1 times [2024-11-17 03:05:24,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:24,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034951256] [2024-11-17 03:05:24,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:24,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:24,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:25,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:25,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034951256] [2024-11-17 03:05:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034951256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:25,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:25,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:05:25,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867937261] [2024-11-17 03:05:25,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:25,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:05:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:05:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:05:25,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 135 [2024-11-17 03:05:25,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 232 flow. Second operand has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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) [2024-11-17 03:05:25,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:25,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 135 [2024-11-17 03:05:25,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:25,691 INFO L124 PetriNetUnfolderBase]: 1224/2827 cut-off events. [2024-11-17 03:05:25,691 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-11-17 03:05:25,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4789 conditions, 2827 events. 1224/2827 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 20362 event pairs, 428 based on Foata normal form. 0/2372 useless extension candidates. Maximal degree in co-relation 4772. Up to 1068 conditions per place. [2024-11-17 03:05:25,715 INFO L140 encePairwiseOnDemand]: 123/135 looper letters, 72 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2024-11-17 03:05:25,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 415 flow [2024-11-17 03:05:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:05:25,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:05:25,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-11-17 03:05:25,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5762962962962963 [2024-11-17 03:05:25,719 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 232 flow. Second operand 5 states and 389 transitions. [2024-11-17 03:05:25,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 415 flow [2024-11-17 03:05:25,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 126 transitions, 409 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:05:25,723 INFO L231 Difference]: Finished difference. Result has 103 places, 103 transitions, 218 flow [2024-11-17 03:05:25,723 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=103, PETRI_TRANSITIONS=103} [2024-11-17 03:05:25,724 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -23 predicate places. [2024-11-17 03:05:25,724 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 103 transitions, 218 flow [2024-11-17 03:05:25,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 63.166666666666664) internal successors, (379), 6 states have internal predecessors, (379), 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) [2024-11-17 03:05:25,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:25,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:05:25,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:05:25,726 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:25,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:25,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2000572046, now seen corresponding path program 1 times [2024-11-17 03:05:25,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:25,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529716677] [2024-11-17 03:05:25,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:25,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:26,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:26,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529716677] [2024-11-17 03:05:26,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529716677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:26,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:26,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:05:26,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492631517] [2024-11-17 03:05:26,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:26,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:05:26,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:26,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:05:26,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:05:26,366 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 135 [2024-11-17 03:05:26,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 103 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-17 03:05:26,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:26,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 135 [2024-11-17 03:05:26,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:26,688 INFO L124 PetriNetUnfolderBase]: 1038/2357 cut-off events. [2024-11-17 03:05:26,689 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-17 03:05:26,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4089 conditions, 2357 events. 1038/2357 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 16025 event pairs, 422 based on Foata normal form. 120/2040 useless extension candidates. Maximal degree in co-relation 1960. Up to 870 conditions per place. [2024-11-17 03:05:26,702 INFO L140 encePairwiseOnDemand]: 125/135 looper letters, 68 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2024-11-17 03:05:26,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 119 transitions, 393 flow [2024-11-17 03:05:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:05:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:05:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 358 transitions. [2024-11-17 03:05:26,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.662962962962963 [2024-11-17 03:05:26,704 INFO L175 Difference]: Start difference. First operand has 103 places, 103 transitions, 218 flow. Second operand 4 states and 358 transitions. [2024-11-17 03:05:26,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 119 transitions, 393 flow [2024-11-17 03:05:26,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 119 transitions, 385 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:05:26,707 INFO L231 Difference]: Finished difference. Result has 95 places, 96 transitions, 202 flow [2024-11-17 03:05:26,707 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=202, PETRI_PLACES=95, PETRI_TRANSITIONS=96} [2024-11-17 03:05:26,708 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -31 predicate places. [2024-11-17 03:05:26,708 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 96 transitions, 202 flow [2024-11-17 03:05:26,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 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) [2024-11-17 03:05:26,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:26,709 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:05:26,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:05:26,709 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:26,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1888189137, now seen corresponding path program 1 times [2024-11-17 03:05:26,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:26,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773599155] [2024-11-17 03:05:26,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:26,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:28,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:28,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773599155] [2024-11-17 03:05:28,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773599155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:28,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:28,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-17 03:05:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841854615] [2024-11-17 03:05:28,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:28,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-17 03:05:28,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:28,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-17 03:05:28,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-17 03:05:29,009 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 135 [2024-11-17 03:05:29,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 96 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 58.5) internal successors, (585), 10 states have internal predecessors, (585), 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) [2024-11-17 03:05:29,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:29,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 135 [2024-11-17 03:05:29,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:29,790 INFO L124 PetriNetUnfolderBase]: 2060/4323 cut-off events. [2024-11-17 03:05:29,791 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-17 03:05:29,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7743 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 31036 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. [2024-11-17 03:05:29,811 INFO L140 encePairwiseOnDemand]: 124/135 looper letters, 134 selfloop transitions, 13 changer transitions 0/187 dead transitions. [2024-11-17 03:05:29,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 187 transitions, 685 flow [2024-11-17 03:05:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-17 03:05:29,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-17 03:05:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2024-11-17 03:05:29,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5448559670781893 [2024-11-17 03:05:29,814 INFO L175 Difference]: Start difference. First operand has 95 places, 96 transitions, 202 flow. Second operand 9 states and 662 transitions. [2024-11-17 03:05:29,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 187 transitions, 685 flow [2024-11-17 03:05:29,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 187 transitions, 677 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:05:29,819 INFO L231 Difference]: Finished difference. Result has 104 places, 106 transitions, 274 flow [2024-11-17 03:05:29,820 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=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=104, PETRI_TRANSITIONS=106} [2024-11-17 03:05:29,820 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -22 predicate places. [2024-11-17 03:05:29,821 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 106 transitions, 274 flow [2024-11-17 03:05:29,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.5) internal successors, (585), 10 states have internal predecessors, (585), 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) [2024-11-17 03:05:29,821 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:29,821 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:05:29,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:05:29,822 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:29,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1114660555, now seen corresponding path program 1 times [2024-11-17 03:05:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:29,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456462976] [2024-11-17 03:05:29,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:30,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:30,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:30,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456462976] [2024-11-17 03:05:30,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456462976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:30,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:30,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:05:30,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955603445] [2024-11-17 03:05:30,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:30,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:05:30,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:30,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:05:30,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:05:30,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 135 [2024-11-17 03:05:30,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 106 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2024-11-17 03:05:30,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:30,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 135 [2024-11-17 03:05:30,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:30,690 INFO L124 PetriNetUnfolderBase]: 1878/4268 cut-off events. [2024-11-17 03:05:30,691 INFO L125 PetriNetUnfolderBase]: For 356/356 co-relation queries the response was YES. [2024-11-17 03:05:30,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7843 conditions, 4268 events. 1878/4268 cut-off events. For 356/356 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 32531 event pairs, 1233 based on Foata normal form. 0/3511 useless extension candidates. Maximal degree in co-relation 7448. Up to 2596 conditions per place. [2024-11-17 03:05:30,717 INFO L140 encePairwiseOnDemand]: 129/135 looper letters, 77 selfloop transitions, 4 changer transitions 0/126 dead transitions. [2024-11-17 03:05:30,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 126 transitions, 497 flow [2024-11-17 03:05:30,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:05:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:05:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2024-11-17 03:05:30,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6162962962962963 [2024-11-17 03:05:30,719 INFO L175 Difference]: Start difference. First operand has 104 places, 106 transitions, 274 flow. Second operand 5 states and 416 transitions. [2024-11-17 03:05:30,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 126 transitions, 497 flow [2024-11-17 03:05:30,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 126 transitions, 491 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:05:30,723 INFO L231 Difference]: Finished difference. Result has 103 places, 104 transitions, 272 flow [2024-11-17 03:05:30,724 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=103, PETRI_TRANSITIONS=104} [2024-11-17 03:05:30,724 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -23 predicate places. [2024-11-17 03:05:30,725 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 104 transitions, 272 flow [2024-11-17 03:05:30,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.5) internal successors, (429), 6 states have internal predecessors, (429), 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) [2024-11-17 03:05:30,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:30,725 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:05:30,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:05:30,726 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:30,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:30,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1114660554, now seen corresponding path program 1 times [2024-11-17 03:05:30,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120015590] [2024-11-17 03:05:30,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:30,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:30,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:30,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:30,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120015590] [2024-11-17 03:05:30,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120015590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:30,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:30,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:05:30,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670901577] [2024-11-17 03:05:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:30,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:05:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:05:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:05:30,967 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 135 [2024-11-17 03:05:30,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 104 transitions, 272 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) [2024-11-17 03:05:30,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:30,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 135 [2024-11-17 03:05:30,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:31,258 INFO L124 PetriNetUnfolderBase]: 692/1675 cut-off events. [2024-11-17 03:05:31,258 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-17 03:05:31,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1675 events. 692/1675 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10165 event pairs, 446 based on Foata normal form. 45/1487 useless extension candidates. Maximal degree in co-relation 3113. Up to 695 conditions per place. [2024-11-17 03:05:31,266 INFO L140 encePairwiseOnDemand]: 131/135 looper letters, 61 selfloop transitions, 3 changer transitions 0/112 dead transitions. [2024-11-17 03:05:31,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 407 flow [2024-11-17 03:05:31,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:05:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:05:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 292 transitions. [2024-11-17 03:05:31,268 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2024-11-17 03:05:31,268 INFO L175 Difference]: Start difference. First operand has 103 places, 104 transitions, 272 flow. Second operand 3 states and 292 transitions. [2024-11-17 03:05:31,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 407 flow [2024-11-17 03:05:31,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 112 transitions, 397 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-11-17 03:05:31,271 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 253 flow [2024-11-17 03:05:31,271 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} [2024-11-17 03:05:31,272 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -26 predicate places. [2024-11-17 03:05:31,272 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 253 flow [2024-11-17 03:05:31,272 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) [2024-11-17 03:05:31,272 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:31,272 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] [2024-11-17 03:05:31,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:05:31,272 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:31,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:31,273 INFO L85 PathProgramCache]: Analyzing trace with hash 2098116218, now seen corresponding path program 1 times [2024-11-17 03:05:31,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:31,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94772186] [2024-11-17 03:05:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:31,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:31,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94772186] [2024-11-17 03:05:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94772186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:31,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:05:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768476140] [2024-11-17 03:05:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:31,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:05:31,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:05:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:05:31,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-17 03:05:31,526 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) [2024-11-17 03:05:31,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:31,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-17 03:05:31,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:31,708 INFO L124 PetriNetUnfolderBase]: 692/1645 cut-off events. [2024-11-17 03:05:31,708 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-17 03:05:31,711 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 9855 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. [2024-11-17 03:05:31,715 INFO L140 encePairwiseOnDemand]: 132/135 looper letters, 51 selfloop transitions, 1 changer transitions 0/98 dead transitions. [2024-11-17 03:05:31,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 98 transitions, 353 flow [2024-11-17 03:05:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:05:31,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:05:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2024-11-17 03:05:31,717 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790123456790124 [2024-11-17 03:05:31,717 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 253 flow. Second operand 3 states and 275 transitions. [2024-11-17 03:05:31,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 98 transitions, 353 flow [2024-11-17 03:05:31,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 98 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:05:31,720 INFO L231 Difference]: Finished difference. Result has 98 places, 98 transitions, 245 flow [2024-11-17 03:05:31,721 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} [2024-11-17 03:05:31,721 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -28 predicate places. [2024-11-17 03:05:31,721 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 98 transitions, 245 flow [2024-11-17 03:05:31,721 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) [2024-11-17 03:05:31,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:31,722 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] [2024-11-17 03:05:31,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:05:31,722 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:31,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:31,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2098116219, now seen corresponding path program 1 times [2024-11-17 03:05:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186963211] [2024-11-17 03:05:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:32,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:32,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186963211] [2024-11-17 03:05:32,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186963211] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:32,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:32,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:05:32,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647209972] [2024-11-17 03:05:32,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:32,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:05:32,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:32,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:05:32,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:05:32,108 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 135 [2024-11-17 03:05:32,109 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) [2024-11-17 03:05:32,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:32,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 135 [2024-11-17 03:05:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:32,326 INFO L124 PetriNetUnfolderBase]: 602/1392 cut-off events. [2024-11-17 03:05:32,327 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-17 03:05:32,329 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 7184 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. [2024-11-17 03:05:32,332 INFO L140 encePairwiseOnDemand]: 130/135 looper letters, 64 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-11-17 03:05:32,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 111 transitions, 403 flow [2024-11-17 03:05:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:05:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:05:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 369 transitions. [2024-11-17 03:05:32,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6833333333333333 [2024-11-17 03:05:32,334 INFO L175 Difference]: Start difference. First operand has 98 places, 98 transitions, 245 flow. Second operand 4 states and 369 transitions. [2024-11-17 03:05:32,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 111 transitions, 403 flow [2024-11-17 03:05:32,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 111 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:05:32,341 INFO L231 Difference]: Finished difference. Result has 101 places, 98 transitions, 253 flow [2024-11-17 03:05:32,341 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} [2024-11-17 03:05:32,342 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -25 predicate places. [2024-11-17 03:05:32,342 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 253 flow [2024-11-17 03:05:32,343 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) [2024-11-17 03:05:32,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:32,343 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] [2024-11-17 03:05:32,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:05:32,344 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)] === [2024-11-17 03:05:32,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash 774204005, now seen corresponding path program 1 times [2024-11-17 03:05:32,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:32,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718405654] [2024-11-17 03:05:32,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:32,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:32,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:32,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718405654] [2024-11-17 03:05:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718405654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:32,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:05:32,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:05:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038735282] [2024-11-17 03:05:32,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:32,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:05:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:05:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:05:32,501 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 135 [2024-11-17 03:05:32,502 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) [2024-11-17 03:05:32,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:32,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 135 [2024-11-17 03:05:32,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:32,687 INFO L124 PetriNetUnfolderBase]: 572/1364 cut-off events. [2024-11-17 03:05:32,687 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-11-17 03:05:32,690 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 39. Compared 7149 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. [2024-11-17 03:05:32,694 INFO L140 encePairwiseOnDemand]: 133/135 looper letters, 48 selfloop transitions, 1 changer transitions 3/97 dead transitions. [2024-11-17 03:05:32,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 97 transitions, 355 flow [2024-11-17 03:05:32,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:05:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:05:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2024-11-17 03:05:32,696 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6839506172839506 [2024-11-17 03:05:32,696 INFO L175 Difference]: Start difference. First operand has 101 places, 98 transitions, 253 flow. Second operand 3 states and 277 transitions. [2024-11-17 03:05:32,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 97 transitions, 355 flow [2024-11-17 03:05:32,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 97 transitions, 351 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:05:32,699 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 241 flow [2024-11-17 03:05:32,700 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} [2024-11-17 03:05:32,701 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -26 predicate places. [2024-11-17 03:05:32,702 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 241 flow [2024-11-17 03:05:32,702 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) [2024-11-17 03:05:32,702 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:32,703 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] [2024-11-17 03:05:32,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:05:32,703 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:32,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1436493188, now seen corresponding path program 1 times [2024-11-17 03:05:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:32,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279979964] [2024-11-17 03:05:32,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:32,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279979964] [2024-11-17 03:05:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279979964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:05:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945074487] [2024-11-17 03:05:34,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:34,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:05:34,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:05:34,184 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) [2024-11-17 03:05:34,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:05:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:34,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-17 03:05:34,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:05:34,704 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 [2024-11-17 03:05:34,772 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 [2024-11-17 03:05:34,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:05:34,931 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 [2024-11-17 03:05:34,951 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 [2024-11-17 03:05:34,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:34,977 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:05:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945074487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:05:34,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:05:34,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2024-11-17 03:05:34,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923971317] [2024-11-17 03:05:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:05:34,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 03:05:34,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:05:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 03:05:34,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-17 03:05:35,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 135 [2024-11-17 03:05:35,204 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) [2024-11-17 03:05:35,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:05:35,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 135 [2024-11-17 03:05:35,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:05:35,674 INFO L124 PetriNetUnfolderBase]: 619/1368 cut-off events. [2024-11-17 03:05:35,674 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-17 03:05:35,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1368 events. 619/1368 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6671 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. [2024-11-17 03:05:35,681 INFO L140 encePairwiseOnDemand]: 126/135 looper letters, 81 selfloop transitions, 8 changer transitions 3/129 dead transitions. [2024-11-17 03:05:35,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 497 flow [2024-11-17 03:05:35,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-17 03:05:35,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-17 03:05:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 589 transitions. [2024-11-17 03:05:35,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6232804232804233 [2024-11-17 03:05:35,685 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 241 flow. Second operand 7 states and 589 transitions. [2024-11-17 03:05:35,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 497 flow [2024-11-17 03:05:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 494 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-17 03:05:35,689 INFO L231 Difference]: Finished difference. Result has 105 places, 95 transitions, 267 flow [2024-11-17 03:05:35,689 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} [2024-11-17 03:05:35,690 INFO L277 CegarLoopForPetriNet]: 126 programPoint places, -21 predicate places. [2024-11-17 03:05:35,690 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 95 transitions, 267 flow [2024-11-17 03:05:35,690 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) [2024-11-17 03:05:35,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:05:35,691 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] [2024-11-17 03:05:35,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-17 03:05:35,891 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 [2024-11-17 03:05:35,892 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 93 more)] === [2024-11-17 03:05:35,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:05:35,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1873748439, now seen corresponding path program 1 times [2024-11-17 03:05:35,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:05:35,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763192747] [2024-11-17 03:05:35,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:35,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:05:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:38,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:38,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:05:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763192747] [2024-11-17 03:05:38,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763192747] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:05:38,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342391648] [2024-11-17 03:05:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:05:38,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:05:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:05:38,078 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) [2024-11-17 03:05:38,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:05:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:05:38,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-17 03:05:38,449 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:05:38,497 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 [2024-11-17 03:05:38,530 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 [2024-11-17 03:05:38,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:05:38,710 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 [2024-11-17 03:05:38,739 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 [2024-11-17 03:05:38,810 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 [2024-11-17 03:05:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:05:38,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:06:30,418 INFO L349 Elim1Store]: treesize reduction 47, result has 52.5 percent of original size [2024-11-17 03:06:30,419 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 118 treesize of output 148 [2024-11-17 03:06:30,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:06:30,459 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 113 treesize of output 113 [2024-11-17 03:06:30,516 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 [2024-11-17 03:06:30,541 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:06:30,541 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 49 [2024-11-17 03:06:30,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:06:30,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:06:30,617 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:06:30,618 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 40 treesize of output 45 [2024-11-17 03:06:30,627 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 32 treesize of output 28 [2024-11-17 03:06:30,632 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-17 03:06:30,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-17 03:06:30,639 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 21 treesize of output 13 [2024-11-17 03:06:30,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:06:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342391648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:06:30,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:06:30,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 29 [2024-11-17 03:06:30,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11532285] [2024-11-17 03:06:30,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:06:30,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 03:06:30,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:06:30,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 03:06:30,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=776, Unknown=9, NotChecked=0, Total=930