./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c --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/weaver/popl20-prod-cons.wvr.c -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 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:40:41,990 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:40:42,075 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:40:42,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:40:42,082 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:40:42,112 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:40:42,113 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:40:42,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:40:42,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:40:42,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:40:42,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:40:42,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:40:42,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:40:42,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:40:42,120 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:40:42,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:40:42,120 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:40:42,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:40:42,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:40:42,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:40:42,121 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:40:42,122 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:40:42,123 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:40:42,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:40:42,123 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:40:42,124 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:40:42,124 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:40:42,124 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:40:42,125 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:40:42,125 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:40:42,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:40:42,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:40:42,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:40:42,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:40:42,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:40:42,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:40:42,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:40:42,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:40:42,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:40:42,128 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:40:42,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:40:42,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:40:42,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7225a3dc80a635bdf8bc0a0aebf3fff6c385d87e3635c30eb2fdc2ad9b10efb0 [2024-11-17 03:40:42,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:40:42,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:40:42,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:40:42,431 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:40:42,431 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:40:42,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-17 03:40:44,004 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:40:44,197 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:40:44,198 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons.wvr.c [2024-11-17 03:40:44,205 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abefae5e2/444227462d544da797001fe8cfb25ec7/FLAG1d1775240 [2024-11-17 03:40:44,217 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abefae5e2/444227462d544da797001fe8cfb25ec7 [2024-11-17 03:40:44,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:40:44,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:40:44,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:40:44,222 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:40:44,227 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:40:44,228 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,229 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7133edf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44, skipping insertion in model container [2024-11-17 03:40:44,229 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,251 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:40:44,504 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:40:44,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:40:44,514 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:40:44,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:40:44,561 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:40:44,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44 WrapperNode [2024-11-17 03:40:44,562 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:40:44,563 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:40:44,563 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:40:44,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:40:44,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,598 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 155 [2024-11-17 03:40:44,599 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:40:44,600 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:40:44,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:40:44,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:40:44,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,614 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,630 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 03:40:44,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,634 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,645 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,648 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:40:44,652 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:40:44,652 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:40:44,652 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:40:44,653 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (1/1) ... [2024-11-17 03:40:44,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:40:44,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:44,690 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 03:40:44,694 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 03:40:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:40:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:40:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:40:44,745 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:40:44,745 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:40:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 03:40:44,746 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 03:40:44,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:40:44,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:40:44,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:40:44,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:40:44,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:40:44,751 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 03:40:44,864 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:40:44,867 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:40:45,169 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:40:45,169 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:40:45,440 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:40:45,441 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:40:45,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:40:45 BoogieIcfgContainer [2024-11-17 03:40:45,442 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:40:45,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:40:45,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:40:45,447 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:40:45,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:40:44" (1/3) ... [2024-11-17 03:40:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537b6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:45, skipping insertion in model container [2024-11-17 03:40:45,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:40:44" (2/3) ... [2024-11-17 03:40:45,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@537b6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:40:45, skipping insertion in model container [2024-11-17 03:40:45,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:40:45" (3/3) ... [2024-11-17 03:40:45,451 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons.wvr.c [2024-11-17 03:40:45,468 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:40:45,468 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-11-17 03:40:45,468 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:40:45,532 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 03:40:45,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 54 transitions, 129 flow [2024-11-17 03:40:45,604 INFO L124 PetriNetUnfolderBase]: 7/51 cut-off events. [2024-11-17 03:40:45,605 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:40:45,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 7/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 42. Up to 3 conditions per place. [2024-11-17 03:40:45,610 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 54 transitions, 129 flow [2024-11-17 03:40:45,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 50 transitions, 118 flow [2024-11-17 03:40:45,625 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:40:45,633 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;@51c034c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:40:45,634 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-17 03:40:45,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:40:45,638 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-17 03:40:45,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:40:45,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:45,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:40:45,639 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:45,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash 12866448, now seen corresponding path program 1 times [2024-11-17 03:40:45,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:45,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634310084] [2024-11-17 03:40:45,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:45,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:45,960 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 03:40:45,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:45,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634310084] [2024-11-17 03:40:45,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634310084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:45,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:45,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:40:45,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454035450] [2024-11-17 03:40:45,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:45,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:40:45,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:46,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:40:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:40:46,021 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:46,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 03:40:46,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:46,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:46,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:46,415 INFO L124 PetriNetUnfolderBase]: 1011/1604 cut-off events. [2024-11-17 03:40:46,415 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-11-17 03:40:46,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3269 conditions, 1604 events. 1011/1604 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9288 event pairs, 884 based on Foata normal form. 127/1383 useless extension candidates. Maximal degree in co-relation 3078. Up to 1502 conditions per place. [2024-11-17 03:40:46,437 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 29 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-11-17 03:40:46,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 168 flow [2024-11-17 03:40:46,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:40:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:40:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2024-11-17 03:40:46,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-11-17 03:40:46,454 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 118 flow. Second operand 3 states and 87 transitions. [2024-11-17 03:40:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 168 flow [2024-11-17 03:40:46,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 156 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 03:40:46,468 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 98 flow [2024-11-17 03:40:46,470 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2024-11-17 03:40:46,475 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2024-11-17 03:40:46,476 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 98 flow [2024-11-17 03:40:46,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 03:40:46,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:46,476 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:40:46,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:40:46,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:46,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:46,477 INFO L85 PathProgramCache]: Analyzing trace with hash 12866449, now seen corresponding path program 1 times [2024-11-17 03:40:46,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:46,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331828711] [2024-11-17 03:40:46,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:46,855 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 03:40:46,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:46,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331828711] [2024-11-17 03:40:46,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331828711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:46,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:46,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:40:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382019086] [2024-11-17 03:40:46,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:46,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:40:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:40:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:40:46,875 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:46,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 03:40:46,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:46,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:46,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:47,167 INFO L124 PetriNetUnfolderBase]: 1012/1609 cut-off events. [2024-11-17 03:40:47,168 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-17 03:40:47,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 1609 events. 1012/1609 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 9264 event pairs, 884 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 3161. Up to 1507 conditions per place. [2024-11-17 03:40:47,178 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 31 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-17 03:40:47,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 176 flow [2024-11-17 03:40:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:40:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:40:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-17 03:40:47,182 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-17 03:40:47,182 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 98 flow. Second operand 4 states and 104 transitions. [2024-11-17 03:40:47,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 176 flow [2024-11-17 03:40:47,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:40:47,186 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 121 flow [2024-11-17 03:40:47,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-17 03:40:47,187 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-11-17 03:40:47,188 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 121 flow [2024-11-17 03:40:47,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 03:40:47,188 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:47,189 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:40:47,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:40:47,189 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:47,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1052706626, now seen corresponding path program 1 times [2024-11-17 03:40:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399635014] [2024-11-17 03:40:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:47,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399635014] [2024-11-17 03:40:47,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399635014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611585851] [2024-11-17 03:40:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:47,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:47,569 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 03:40:47,571 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 03:40:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:47,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:40:47,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:47,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-17 03:40:47,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:47,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:48,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611585851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:48,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:48,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:40:48,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250467305] [2024-11-17 03:40:48,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:48,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:40:48,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:48,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:40:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:40:48,141 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 54 [2024-11-17 03:40:48,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 121 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:40:48,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:48,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 54 [2024-11-17 03:40:48,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:48,492 INFO L124 PetriNetUnfolderBase]: 1012/1608 cut-off events. [2024-11-17 03:40:48,492 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 03:40:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3196 conditions, 1608 events. 1012/1608 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9317 event pairs, 884 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 3171. Up to 1503 conditions per place. [2024-11-17 03:40:48,502 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 29 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2024-11-17 03:40:48,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 191 flow [2024-11-17 03:40:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:40:48,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:40:48,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-17 03:40:48,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4104938271604938 [2024-11-17 03:40:48,505 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 121 flow. Second operand 6 states and 133 transitions. [2024-11-17 03:40:48,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 191 flow [2024-11-17 03:40:48,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:40:48,507 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 128 flow [2024-11-17 03:40:48,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=128, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-11-17 03:40:48,508 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2024-11-17 03:40:48,508 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 128 flow [2024-11-17 03:40:48,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:40:48,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:48,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:48,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:40:48,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:48,713 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:48,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:48,714 INFO L85 PathProgramCache]: Analyzing trace with hash 115605933, now seen corresponding path program 1 times [2024-11-17 03:40:48,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:48,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896285490] [2024-11-17 03:40:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:48,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:48,774 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 03:40:48,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:48,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896285490] [2024-11-17 03:40:48,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896285490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:48,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:48,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:40:48,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732134834] [2024-11-17 03:40:48,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:48,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:40:48,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:48,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:40:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:40:48,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:48,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 128 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 03:40:48,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:48,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:48,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:48,946 INFO L124 PetriNetUnfolderBase]: 767/1227 cut-off events. [2024-11-17 03:40:48,947 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-11-17 03:40:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2441 conditions, 1227 events. 767/1227 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6649 event pairs, 655 based on Foata normal form. 0/1039 useless extension candidates. Maximal degree in co-relation 2413. Up to 1140 conditions per place. [2024-11-17 03:40:48,959 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 29 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-17 03:40:48,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 44 transitions, 188 flow [2024-11-17 03:40:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:40:48,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:40:48,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-17 03:40:48,963 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-11-17 03:40:48,963 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 128 flow. Second operand 4 states and 99 transitions. [2024-11-17 03:40:48,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 44 transitions, 188 flow [2024-11-17 03:40:48,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 165 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-17 03:40:48,967 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 107 flow [2024-11-17 03:40:48,968 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=107, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-17 03:40:48,969 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-11-17 03:40:48,969 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 107 flow [2024-11-17 03:40:48,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 03:40:48,969 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:48,970 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:48,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:40:48,970 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:48,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 115605934, now seen corresponding path program 1 times [2024-11-17 03:40:48,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:48,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483264534] [2024-11-17 03:40:48,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:48,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:49,058 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 03:40:49,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483264534] [2024-11-17 03:40:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483264534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:49,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:49,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:40:49,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072239632] [2024-11-17 03:40:49,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:49,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:40:49,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:40:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:40:49,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:49,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:40:49,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:49,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:49,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:49,284 INFO L124 PetriNetUnfolderBase]: 1001/1660 cut-off events. [2024-11-17 03:40:49,284 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-17 03:40:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3273 conditions, 1660 events. 1001/1660 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9703 event pairs, 889 based on Foata normal form. 60/1544 useless extension candidates. Maximal degree in co-relation 2403. Up to 1144 conditions per place. [2024-11-17 03:40:49,296 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 48 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2024-11-17 03:40:49,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 255 flow [2024-11-17 03:40:49,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:40:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:40:49,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-11-17 03:40:49,298 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-11-17 03:40:49,298 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 107 flow. Second operand 5 states and 141 transitions. [2024-11-17 03:40:49,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 255 flow [2024-11-17 03:40:49,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:40:49,300 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 127 flow [2024-11-17 03:40:49,300 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-11-17 03:40:49,302 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-11-17 03:40:49,303 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 127 flow [2024-11-17 03:40:49,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:40:49,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:49,303 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:49,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:40:49,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:49,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:49,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1085928669, now seen corresponding path program 1 times [2024-11-17 03:40:49,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:49,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696545915] [2024-11-17 03:40:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:49,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:49,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:49,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696545915] [2024-11-17 03:40:49,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696545915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:49,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:49,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:40:49,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875912536] [2024-11-17 03:40:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:49,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-17 03:40:49,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-17 03:40:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-17 03:40:49,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:49,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 127 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 03:40:49,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:49,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:49,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:49,735 INFO L124 PetriNetUnfolderBase]: 790/1331 cut-off events. [2024-11-17 03:40:49,736 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-17 03:40:49,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2720 conditions, 1331 events. 790/1331 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7434 event pairs, 694 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 1854. Up to 1215 conditions per place. [2024-11-17 03:40:49,746 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 29 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2024-11-17 03:40:49,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 183 flow [2024-11-17 03:40:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:40:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:40:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-17 03:40:49,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-11-17 03:40:49,747 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 127 flow. Second operand 4 states and 98 transitions. [2024-11-17 03:40:49,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 183 flow [2024-11-17 03:40:49,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:40:49,749 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 123 flow [2024-11-17 03:40:49,749 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=123, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2024-11-17 03:40:49,750 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-11-17 03:40:49,750 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 123 flow [2024-11-17 03:40:49,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 03:40:49,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:49,751 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] [2024-11-17 03:40:49,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:40:49,751 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:49,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:49,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2095585627, now seen corresponding path program 1 times [2024-11-17 03:40:49,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:49,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962955583] [2024-11-17 03:40:49,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:49,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:49,880 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 03:40:49,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:49,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962955583] [2024-11-17 03:40:49,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962955583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:49,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:49,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:40:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593728532] [2024-11-17 03:40:49,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:49,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:40:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:40:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:40:49,886 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:49,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 03:40:49,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:49,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:49,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:50,103 INFO L124 PetriNetUnfolderBase]: 923/1627 cut-off events. [2024-11-17 03:40:50,104 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-11-17 03:40:50,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 1627 events. 923/1627 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9465 event pairs, 176 based on Foata normal form. 78/1674 useless extension candidates. Maximal degree in co-relation 2296. Up to 755 conditions per place. [2024-11-17 03:40:50,113 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 59 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2024-11-17 03:40:50,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 331 flow [2024-11-17 03:40:50,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:40:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:40:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-17 03:40:50,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-11-17 03:40:50,115 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 123 flow. Second operand 5 states and 148 transitions. [2024-11-17 03:40:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 331 flow [2024-11-17 03:40:50,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 76 transitions, 327 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:40:50,118 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 150 flow [2024-11-17 03:40:50,119 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-17 03:40:50,120 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-11-17 03:40:50,120 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 150 flow [2024-11-17 03:40:50,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 03:40:50,121 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:50,121 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] [2024-11-17 03:40:50,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:40:50,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:50,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:50,122 INFO L85 PathProgramCache]: Analyzing trace with hash 74024691, now seen corresponding path program 2 times [2024-11-17 03:40:50,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:50,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283108329] [2024-11-17 03:40:50,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:50,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:50,271 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 03:40:50,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:50,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283108329] [2024-11-17 03:40:50,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283108329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:50,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:50,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:40:50,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301829305] [2024-11-17 03:40:50,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:50,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:40:50,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:50,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:40:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:40:50,274 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 03:40:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 03:40:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 03:40:50,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:50,590 INFO L124 PetriNetUnfolderBase]: 1375/2448 cut-off events. [2024-11-17 03:40:50,591 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2024-11-17 03:40:50,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5517 conditions, 2448 events. 1375/2448 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 15065 event pairs, 647 based on Foata normal form. 3/2368 useless extension candidates. Maximal degree in co-relation 4517. Up to 1053 conditions per place. [2024-11-17 03:40:50,604 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 55 selfloop transitions, 4 changer transitions 6/77 dead transitions. [2024-11-17 03:40:50,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 364 flow [2024-11-17 03:40:50,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:40:50,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:40:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2024-11-17 03:40:50,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2024-11-17 03:40:50,609 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 150 flow. Second operand 5 states and 149 transitions. [2024-11-17 03:40:50,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 364 flow [2024-11-17 03:40:50,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:40:50,612 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 162 flow [2024-11-17 03:40:50,612 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2024-11-17 03:40:50,613 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-11-17 03:40:50,613 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 162 flow [2024-11-17 03:40:50,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 03:40:50,613 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:50,613 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:50,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:40:50,614 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:50,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:50,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1450100624, now seen corresponding path program 1 times [2024-11-17 03:40:50,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:50,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999445850] [2024-11-17 03:40:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:50,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:50,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:50,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:40:50,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:50,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999445850] [2024-11-17 03:40:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999445850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:40:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:40:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:40:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641212368] [2024-11-17 03:40:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:40:50,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:40:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:40:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:40:50,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 03:40:50,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 03:40:50,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:50,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 03:40:50,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:50,909 INFO L124 PetriNetUnfolderBase]: 1230/2250 cut-off events. [2024-11-17 03:40:50,909 INFO L125 PetriNetUnfolderBase]: For 961/975 co-relation queries the response was YES. [2024-11-17 03:40:50,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5110 conditions, 2250 events. 1230/2250 cut-off events. For 961/975 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 13245 event pairs, 515 based on Foata normal form. 43/2179 useless extension candidates. Maximal degree in co-relation 5079. Up to 1456 conditions per place. [2024-11-17 03:40:50,921 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 45 selfloop transitions, 2 changer transitions 5/64 dead transitions. [2024-11-17 03:40:50,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 323 flow [2024-11-17 03:40:50,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:40:50,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:40:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-17 03:40:50,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-11-17 03:40:50,923 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 162 flow. Second operand 3 states and 98 transitions. [2024-11-17 03:40:50,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 323 flow [2024-11-17 03:40:50,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 317 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-17 03:40:50,927 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 170 flow [2024-11-17 03:40:50,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-17 03:40:50,930 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2024-11-17 03:40:50,930 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 170 flow [2024-11-17 03:40:50,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 03:40:50,930 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:50,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:50,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:40:50,930 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:50,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1180373040, now seen corresponding path program 1 times [2024-11-17 03:40:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:50,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843264480] [2024-11-17 03:40:50,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:50,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:51,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:51,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843264480] [2024-11-17 03:40:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843264480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:51,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749159408] [2024-11-17 03:40:51,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:51,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:51,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:51,714 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 03:40:51,716 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 03:40:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:51,808 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-17 03:40:51,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:52,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:52,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:52,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:40:52,631 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 28 treesize of output 20 [2024-11-17 03:40:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:53,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749159408] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:53,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:53,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 29 [2024-11-17 03:40:53,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620433299] [2024-11-17 03:40:53,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:53,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-17 03:40:53,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-17 03:40:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2024-11-17 03:40:53,244 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-17 03:40:53,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 170 flow. Second operand has 30 states, 30 states have (on average 17.966666666666665) internal successors, (539), 30 states have internal predecessors, (539), 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 03:40:53,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:53,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-17 03:40:53,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:56,338 INFO L124 PetriNetUnfolderBase]: 5471/9438 cut-off events. [2024-11-17 03:40:56,338 INFO L125 PetriNetUnfolderBase]: For 5485/5485 co-relation queries the response was YES. [2024-11-17 03:40:56,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22840 conditions, 9438 events. 5471/9438 cut-off events. For 5485/5485 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 63682 event pairs, 390 based on Foata normal form. 3/8863 useless extension candidates. Maximal degree in co-relation 13548. Up to 1166 conditions per place. [2024-11-17 03:40:56,391 INFO L140 encePairwiseOnDemand]: 41/54 looper letters, 212 selfloop transitions, 46 changer transitions 176/443 dead transitions. [2024-11-17 03:40:56,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 443 transitions, 2312 flow [2024-11-17 03:40:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-17 03:40:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-17 03:40:56,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 980 transitions. [2024-11-17 03:40:56,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4775828460038986 [2024-11-17 03:40:56,395 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 170 flow. Second operand 38 states and 980 transitions. [2024-11-17 03:40:56,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 443 transitions, 2312 flow [2024-11-17 03:40:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 443 transitions, 2246 flow, removed 31 selfloop flow, removed 2 redundant places. [2024-11-17 03:40:56,410 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 558 flow [2024-11-17 03:40:56,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=558, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-11-17 03:40:56,412 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 61 predicate places. [2024-11-17 03:40:56,412 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 558 flow [2024-11-17 03:40:56,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 17.966666666666665) internal successors, (539), 30 states have internal predecessors, (539), 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 03:40:56,413 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:56,413 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:56,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:40:56,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-17 03:40:56,614 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:56,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:56,615 INFO L85 PathProgramCache]: Analyzing trace with hash 811521656, now seen corresponding path program 2 times [2024-11-17 03:40:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:56,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689892442] [2024-11-17 03:40:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:56,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:40:56,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689892442] [2024-11-17 03:40:56,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689892442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:56,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717531650] [2024-11-17 03:40:56,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:40:56,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:56,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:56,819 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:40:56,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:40:56,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:40:56,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:40:56,980 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:40:56,983 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:40:57,098 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-17 03:40:57,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717531650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:57,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:57,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-17 03:40:57,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004147796] [2024-11-17 03:40:57,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:57,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:40:57,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:40:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:40:57,258 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 54 [2024-11-17 03:40:57,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 558 flow. Second operand has 13 states, 13 states have (on average 20.923076923076923) internal successors, (272), 13 states have internal predecessors, (272), 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 03:40:57,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:57,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 54 [2024-11-17 03:40:57,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:57,921 INFO L124 PetriNetUnfolderBase]: 2196/3984 cut-off events. [2024-11-17 03:40:57,921 INFO L125 PetriNetUnfolderBase]: For 13611/13706 co-relation queries the response was YES. [2024-11-17 03:40:57,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12212 conditions, 3984 events. 2196/3984 cut-off events. For 13611/13706 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24517 event pairs, 625 based on Foata normal form. 220/4046 useless extension candidates. Maximal degree in co-relation 10254. Up to 2005 conditions per place. [2024-11-17 03:40:57,941 INFO L140 encePairwiseOnDemand]: 47/54 looper letters, 55 selfloop transitions, 6 changer transitions 57/134 dead transitions. [2024-11-17 03:40:57,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 134 transitions, 923 flow [2024-11-17 03:40:57,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-17 03:40:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-17 03:40:57,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 257 transitions. [2024-11-17 03:40:57,943 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4759259259259259 [2024-11-17 03:40:57,943 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 558 flow. Second operand 10 states and 257 transitions. [2024-11-17 03:40:57,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 134 transitions, 923 flow [2024-11-17 03:40:57,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 134 transitions, 881 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-17 03:40:57,969 INFO L231 Difference]: Finished difference. Result has 106 places, 69 transitions, 351 flow [2024-11-17 03:40:57,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=351, PETRI_PLACES=106, PETRI_TRANSITIONS=69} [2024-11-17 03:40:57,970 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-11-17 03:40:57,970 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 69 transitions, 351 flow [2024-11-17 03:40:57,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 20.923076923076923) internal successors, (272), 13 states have internal predecessors, (272), 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 03:40:57,971 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:57,971 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-17 03:40:57,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-17 03:40:58,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:58,172 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:58,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2090709859, now seen corresponding path program 3 times [2024-11-17 03:40:58,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:58,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958858482] [2024-11-17 03:40:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:58,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:40:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:40:58,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:40:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958858482] [2024-11-17 03:40:58,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958858482] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:40:58,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119227092] [2024-11-17 03:40:58,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:40:58,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:58,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:40:58,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:40:58,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:40:58,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-17 03:40:58,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:40:58,376 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:40:58,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:40:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:40:58,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:40:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:40:58,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119227092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:40:58,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:40:58,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2024-11-17 03:40:58,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012994275] [2024-11-17 03:40:58,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:40:58,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-17 03:40:58,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:40:58,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-17 03:40:58,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:40:58,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 54 [2024-11-17 03:40:58,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 69 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 26.25) internal successors, (210), 8 states have internal predecessors, (210), 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 03:40:58,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:40:58,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 54 [2024-11-17 03:40:58,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:40:59,037 INFO L124 PetriNetUnfolderBase]: 2197/4050 cut-off events. [2024-11-17 03:40:59,037 INFO L125 PetriNetUnfolderBase]: For 9469/9493 co-relation queries the response was YES. [2024-11-17 03:40:59,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12035 conditions, 4050 events. 2197/4050 cut-off events. For 9469/9493 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 23309 event pairs, 559 based on Foata normal form. 97/3969 useless extension candidates. Maximal degree in co-relation 11985. Up to 1249 conditions per place. [2024-11-17 03:40:59,074 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 117 selfloop transitions, 6 changer transitions 6/146 dead transitions. [2024-11-17 03:40:59,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 987 flow [2024-11-17 03:40:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:40:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:40:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-11-17 03:40:59,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-11-17 03:40:59,076 INFO L175 Difference]: Start difference. First operand has 106 places, 69 transitions, 351 flow. Second operand 4 states and 141 transitions. [2024-11-17 03:40:59,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 987 flow [2024-11-17 03:40:59,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 146 transitions, 814 flow, removed 30 selfloop flow, removed 23 redundant places. [2024-11-17 03:40:59,103 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 329 flow [2024-11-17 03:40:59,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=329, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-11-17 03:40:59,104 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-11-17 03:40:59,104 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 329 flow [2024-11-17 03:40:59,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.25) internal successors, (210), 8 states have internal predecessors, (210), 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 03:40:59,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:40:59,105 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-17 03:40:59,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:40:59,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:40:59,309 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:40:59,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:40:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash 721313895, now seen corresponding path program 4 times [2024-11-17 03:40:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:40:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97592815] [2024-11-17 03:40:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:40:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:40:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97592815] [2024-11-17 03:41:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97592815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13387391] [2024-11-17 03:41:00,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:41:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:00,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:00,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:41:00,752 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:41:00,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:00,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-17 03:41:00,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:01,849 INFO L349 Elim1Store]: treesize reduction 38, result has 15.6 percent of original size [2024-11-17 03:41:01,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 19 [2024-11-17 03:41:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:01,960 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:02,589 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-17 03:41:02,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2024-11-17 03:41:03,083 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13387391] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:03,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 43 [2024-11-17 03:41:03,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882768924] [2024-11-17 03:41:03,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:03,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-17 03:41:03,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-17 03:41:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2024-11-17 03:41:03,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-17 03:41:03,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 329 flow. Second operand has 44 states, 44 states have (on average 17.65909090909091) internal successors, (777), 44 states have internal predecessors, (777), 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 03:41:03,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:03,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-17 03:41:03,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:12,350 INFO L124 PetriNetUnfolderBase]: 14212/24760 cut-off events. [2024-11-17 03:41:12,351 INFO L125 PetriNetUnfolderBase]: For 33214/33300 co-relation queries the response was YES. [2024-11-17 03:41:12,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68802 conditions, 24760 events. 14212/24760 cut-off events. For 33214/33300 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 186382 event pairs, 1566 based on Foata normal form. 215/24313 useless extension candidates. Maximal degree in co-relation 61068. Up to 3663 conditions per place. [2024-11-17 03:41:12,477 INFO L140 encePairwiseOnDemand]: 39/54 looper letters, 581 selfloop transitions, 187 changer transitions 280/1057 dead transitions. [2024-11-17 03:41:12,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1057 transitions, 6218 flow [2024-11-17 03:41:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-17 03:41:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2024-11-17 03:41:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 2447 transitions. [2024-11-17 03:41:12,485 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44866153281994864 [2024-11-17 03:41:12,486 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 329 flow. Second operand 101 states and 2447 transitions. [2024-11-17 03:41:12,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1057 transitions, 6218 flow [2024-11-17 03:41:12,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 1057 transitions, 6128 flow, removed 45 selfloop flow, removed 0 redundant places. [2024-11-17 03:41:12,697 INFO L231 Difference]: Finished difference. Result has 224 places, 265 transitions, 2326 flow [2024-11-17 03:41:12,701 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=2326, PETRI_PLACES=224, PETRI_TRANSITIONS=265} [2024-11-17 03:41:12,702 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-11-17 03:41:12,702 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 265 transitions, 2326 flow [2024-11-17 03:41:12,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 17.65909090909091) internal successors, (777), 44 states have internal predecessors, (777), 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 03:41:12,703 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:12,703 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-17 03:41:12,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-17 03:41:12,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-17 03:41:12,904 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:41:12,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:12,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1002623671, now seen corresponding path program 5 times [2024-11-17 03:41:12,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:12,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188072686] [2024-11-17 03:41:12,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:12,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:14,052 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:14,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188072686] [2024-11-17 03:41:14,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188072686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:14,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964577413] [2024-11-17 03:41:14,053 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:41:14,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:14,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:14,055 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:41:14,148 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-17 03:41:14,148 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:14,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-17 03:41:14,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:15,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:16,643 INFO L349 Elim1Store]: treesize reduction 16, result has 64.4 percent of original size [2024-11-17 03:41:16,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 45 [2024-11-17 03:41:17,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:17,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964577413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:17,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:17,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19, 19] total 51 [2024-11-17 03:41:17,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819836043] [2024-11-17 03:41:17,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:17,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-17 03:41:17,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:17,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-17 03:41:17,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=2265, Unknown=0, NotChecked=0, Total=2652 [2024-11-17 03:41:17,786 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 54 [2024-11-17 03:41:17,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 265 transitions, 2326 flow. Second operand has 52 states, 52 states have (on average 15.365384615384615) internal successors, (799), 52 states have internal predecessors, (799), 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 03:41:17,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:17,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 54 [2024-11-17 03:41:17,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:26,650 INFO L124 PetriNetUnfolderBase]: 14058/24141 cut-off events. [2024-11-17 03:41:26,650 INFO L125 PetriNetUnfolderBase]: For 120494/120712 co-relation queries the response was YES. [2024-11-17 03:41:26,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91510 conditions, 24141 events. 14058/24141 cut-off events. For 120494/120712 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 177617 event pairs, 2903 based on Foata normal form. 144/23289 useless extension candidates. Maximal degree in co-relation 91106. Up to 7111 conditions per place. [2024-11-17 03:41:27,094 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 398 selfloop transitions, 352 changer transitions 133/890 dead transitions. [2024-11-17 03:41:27,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 890 transitions, 7808 flow [2024-11-17 03:41:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-17 03:41:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2024-11-17 03:41:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 1368 transitions. [2024-11-17 03:41:27,100 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-11-17 03:41:27,101 INFO L175 Difference]: Start difference. First operand has 224 places, 265 transitions, 2326 flow. Second operand 64 states and 1368 transitions. [2024-11-17 03:41:27,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 890 transitions, 7808 flow [2024-11-17 03:41:28,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 890 transitions, 6681 flow, removed 501 selfloop flow, removed 17 redundant places. [2024-11-17 03:41:28,256 INFO L231 Difference]: Finished difference. Result has 272 places, 465 transitions, 4278 flow [2024-11-17 03:41:28,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=4278, PETRI_PLACES=272, PETRI_TRANSITIONS=465} [2024-11-17 03:41:28,257 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-11-17 03:41:28,257 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 465 transitions, 4278 flow [2024-11-17 03:41:28,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 15.365384615384615) internal successors, (799), 52 states have internal predecessors, (799), 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 03:41:28,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:28,258 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2024-11-17 03:41:28,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 03:41:28,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:28,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-17 03:41:28,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1948546495, now seen corresponding path program 6 times [2024-11-17 03:41:28,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:28,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608655875] [2024-11-17 03:41:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:28,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608655875] [2024-11-17 03:41:29,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608655875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809572755] [2024-11-17 03:41:29,386 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 03:41:29,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:29,389 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:29,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:41:29,481 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-17 03:41:29,481 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:29,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-17 03:41:29,491 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:29,628 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 15 treesize of output 1 [2024-11-17 03:41:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:30,467 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:31,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 69 [2024-11-17 03:41:31,371 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:41:31,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 142 treesize of output 139 [2024-11-17 03:41:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809572755] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:31,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 45 [2024-11-17 03:41:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464268073] [2024-11-17 03:41:31,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:31,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-17 03:41:31,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:31,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-17 03:41:31,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=266, Invalid=1804, Unknown=0, NotChecked=0, Total=2070 [2024-11-17 03:41:32,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-17 03:41:32,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 465 transitions, 4278 flow. Second operand has 46 states, 46 states have (on average 17.456521739130434) internal successors, (803), 46 states have internal predecessors, (803), 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 03:41:32,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:32,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-17 03:41:32,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:51,889 INFO L124 PetriNetUnfolderBase]: 36313/65267 cut-off events. [2024-11-17 03:41:51,889 INFO L125 PetriNetUnfolderBase]: For 381450/381976 co-relation queries the response was YES. [2024-11-17 03:41:52,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277556 conditions, 65267 events. 36313/65267 cut-off events. For 381450/381976 co-relation queries the response was YES. Maximal size of possible extension queue 1998. Compared 598259 event pairs, 5572 based on Foata normal form. 528/64786 useless extension candidates. Maximal degree in co-relation 273084. Up to 11061 conditions per place. [2024-11-17 03:41:53,016 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 881 selfloop transitions, 902 changer transitions 460/2258 dead transitions. [2024-11-17 03:41:53,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 2258 transitions, 23684 flow [2024-11-17 03:41:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-17 03:41:53,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2024-11-17 03:41:53,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 2788 transitions. [2024-11-17 03:41:53,022 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4302469135802469 [2024-11-17 03:41:53,022 INFO L175 Difference]: Start difference. First operand has 272 places, 465 transitions, 4278 flow. Second operand 120 states and 2788 transitions. [2024-11-17 03:41:53,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 2258 transitions, 23684 flow