./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3-opt.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 df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:12:12,116 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:12:12,193 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:12:12,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:12:12,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:12:12,230 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:12:12,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:12:12,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:12:12,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:12:12,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:12:12,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:12:12,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:12:12,234 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:12:12,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:12:12,236 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:12:12,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:12:12,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:12:12,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:12:12,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:12:12,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:12:12,241 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:12:12,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:12:12,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:12:12,242 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:12:12,242 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:12:12,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:12:12,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:12:12,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:12:12,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:12:12,244 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:12:12,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:12:12,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:12:12,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:12:12,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:12:12,245 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:12:12,246 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:12:12,246 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:12:12,246 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:12:12,247 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:12:12,247 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:12:12,247 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:12:12,247 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:12:12,248 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df63a9317cd159d15f0c87211084d5e90c66afa781f3187352107d14a3f61024 [2024-11-10 18:12:12,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:12:12,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:12:12,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:12:12,570 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:12:12,571 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:12:12,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-10 18:12:13,960 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:12:14,180 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:12:14,182 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3-opt.wvr.c [2024-11-10 18:12:14,198 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1feb291/e1c08e64d82c406a9e9989dc8bf70eab/FLAGf06e64062 [2024-11-10 18:12:14,545 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b1feb291/e1c08e64d82c406a9e9989dc8bf70eab [2024-11-10 18:12:14,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:12:14,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:12:14,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:12:14,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:12:14,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:12:14,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a0116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14, skipping insertion in model container [2024-11-10 18:12:14,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,582 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:12:14,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:12:14,821 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:12:14,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:12:14,873 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:12:14,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14 WrapperNode [2024-11-10 18:12:14,874 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:12:14,875 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:12:14,875 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:12:14,875 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:12:14,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,890 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,914 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-10 18:12:14,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:12:14,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:12:14,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:12:14,916 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:12:14,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,934 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,955 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 18:12:14,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,960 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,960 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,966 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:12:14,967 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:12:14,967 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:12:14,967 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:12:14,968 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:12:14,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:15,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:12:15,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:12:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:12:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:12:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:12:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:12:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:12:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:12:15,084 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:12:15,084 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 18:12:15,085 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 18:12:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:12:15,085 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-10 18:12:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-10 18:12:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-10 18:12:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-10 18:12:15,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:12:15,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:12:15,087 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:12:15,208 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:12:15,210 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:12:15,451 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:12:15,451 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:12:15,610 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:12:15,610 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:12:15,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:12:15 BoogieIcfgContainer [2024-11-10 18:12:15,611 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:12:15,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:12:15,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:12:15,616 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:12:15,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:12:14" (1/3) ... [2024-11-10 18:12:15,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f83c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:12:15, skipping insertion in model container [2024-11-10 18:12:15,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14" (2/3) ... [2024-11-10 18:12:15,617 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f83c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:12:15, skipping insertion in model container [2024-11-10 18:12:15,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:12:15" (3/3) ... [2024-11-10 18:12:15,619 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3-opt.wvr.c [2024-11-10 18:12:15,635 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:12:15,635 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:12:15,635 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:12:15,709 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-10 18:12:15,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 66 transitions, 174 flow [2024-11-10 18:12:15,788 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2024-11-10 18:12:15,788 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:12:15,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 60 events. 12/60 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-10 18:12:15,793 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 66 transitions, 174 flow [2024-11-10 18:12:15,796 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 59 transitions, 154 flow [2024-11-10 18:12:15,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:12:15,819 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;@47d1850b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:12:15,820 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 18:12:15,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:12:15,838 INFO L124 PetriNetUnfolderBase]: 12/56 cut-off events. [2024-11-10 18:12:15,838 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:12:15,838 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:15,839 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:15,840 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:15,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:15,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2355622, now seen corresponding path program 1 times [2024-11-10 18:12:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:15,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137720230] [2024-11-10 18:12:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:16,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137720230] [2024-11-10 18:12:16,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137720230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:16,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:16,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:16,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406328824] [2024-11-10 18:12:16,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:16,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:12:16,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:12:16,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:12:16,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:16,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:16,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:16,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:18,177 INFO L124 PetriNetUnfolderBase]: 14584/18591 cut-off events. [2024-11-10 18:12:18,177 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-11-10 18:12:18,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36461 conditions, 18591 events. 14584/18591 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 91421 event pairs, 6928 based on Foata normal form. 7657/25116 useless extension candidates. Maximal degree in co-relation 30976. Up to 16771 conditions per place. [2024-11-10 18:12:18,448 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 32 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-10 18:12:18,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 202 flow [2024-11-10 18:12:18,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:12:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:12:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2024-11-10 18:12:18,462 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-10 18:12:18,464 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 154 flow. Second operand 2 states and 91 transitions. [2024-11-10 18:12:18,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 202 flow [2024-11-10 18:12:18,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 178 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-10 18:12:18,495 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 114 flow [2024-11-10 18:12:18,499 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-10 18:12:18,502 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2024-11-10 18:12:18,503 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 114 flow [2024-11-10 18:12:18,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:18,503 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:18,503 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:18,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:12:18,504 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:18,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:18,506 INFO L85 PathProgramCache]: Analyzing trace with hash 2057274582, now seen corresponding path program 1 times [2024-11-10 18:12:18,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392058976] [2024-11-10 18:12:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392058976] [2024-11-10 18:12:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392058976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:18,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:18,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:18,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470077589] [2024-11-10 18:12:18,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:18,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:12:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:12:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:12:18,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:18,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:18,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:18,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:18,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:21,097 INFO L124 PetriNetUnfolderBase]: 22043/27086 cut-off events. [2024-11-10 18:12:21,097 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2024-11-10 18:12:21,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53018 conditions, 27086 events. 22043/27086 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 118428 event pairs, 5855 based on Foata normal form. 1/26531 useless extension candidates. Maximal degree in co-relation 53015. Up to 18669 conditions per place. [2024-11-10 18:12:21,319 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 5/80 dead transitions. [2024-11-10 18:12:21,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 80 transitions, 305 flow [2024-11-10 18:12:21,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:12:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:12:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-10 18:12:21,323 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2024-11-10 18:12:21,324 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 114 flow. Second operand 3 states and 140 transitions. [2024-11-10 18:12:21,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 80 transitions, 305 flow [2024-11-10 18:12:21,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:12:21,329 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 133 flow [2024-11-10 18:12:21,329 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2024-11-10 18:12:21,330 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-11-10 18:12:21,330 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 133 flow [2024-11-10 18:12:21,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:21,331 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:21,331 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:21,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:12:21,333 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:21,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash -580487271, now seen corresponding path program 1 times [2024-11-10 18:12:21,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:21,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630266600] [2024-11-10 18:12:21,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:21,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:12:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630266600] [2024-11-10 18:12:21,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630266600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:21,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266247093] [2024-11-10 18:12:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:21,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:12:21,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:12:21,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:12:21,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:21,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:21,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:21,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:21,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:24,271 INFO L124 PetriNetUnfolderBase]: 28803/37939 cut-off events. [2024-11-10 18:12:24,271 INFO L125 PetriNetUnfolderBase]: For 5233/5233 co-relation queries the response was YES. [2024-11-10 18:12:24,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77951 conditions, 37939 events. 28803/37939 cut-off events. For 5233/5233 co-relation queries the response was YES. Maximal size of possible extension queue 1644. Compared 216998 event pairs, 5340 based on Foata normal form. 1/36879 useless extension candidates. Maximal degree in co-relation 77946. Up to 22060 conditions per place. [2024-11-10 18:12:24,500 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 1/76 dead transitions. [2024-11-10 18:12:24,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 310 flow [2024-11-10 18:12:24,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:12:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:12:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 132 transitions. [2024-11-10 18:12:24,505 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-10 18:12:24,506 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 133 flow. Second operand 3 states and 132 transitions. [2024-11-10 18:12:24,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 310 flow [2024-11-10 18:12:24,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:24,513 INFO L231 Difference]: Finished difference. Result has 58 places, 55 transitions, 149 flow [2024-11-10 18:12:24,513 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=58, PETRI_TRANSITIONS=55} [2024-11-10 18:12:24,514 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2024-11-10 18:12:24,514 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 55 transitions, 149 flow [2024-11-10 18:12:24,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:24,515 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:24,515 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:24,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:12:24,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:24,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1371877126, now seen corresponding path program 1 times [2024-11-10 18:12:24,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:24,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439433901] [2024-11-10 18:12:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:24,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:24,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:24,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439433901] [2024-11-10 18:12:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439433901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:24,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012477897] [2024-11-10 18:12:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:24,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:12:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:24,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:12:24,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:12:24,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:24,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 55 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:24,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:24,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:24,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:27,516 INFO L124 PetriNetUnfolderBase]: 36139/48667 cut-off events. [2024-11-10 18:12:27,516 INFO L125 PetriNetUnfolderBase]: For 12577/12577 co-relation queries the response was YES. [2024-11-10 18:12:27,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105590 conditions, 48667 events. 36139/48667 cut-off events. For 12577/12577 co-relation queries the response was YES. Maximal size of possible extension queue 2149. Compared 305236 event pairs, 5698 based on Foata normal form. 1/47569 useless extension candidates. Maximal degree in co-relation 105584. Up to 31100 conditions per place. [2024-11-10 18:12:27,812 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 59 selfloop transitions, 3 changer transitions 3/84 dead transitions. [2024-11-10 18:12:27,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 84 transitions, 364 flow [2024-11-10 18:12:27,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:12:27,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:12:27,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 136 transitions. [2024-11-10 18:12:27,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6868686868686869 [2024-11-10 18:12:27,814 INFO L175 Difference]: Start difference. First operand has 58 places, 55 transitions, 149 flow. Second operand 3 states and 136 transitions. [2024-11-10 18:12:27,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 84 transitions, 364 flow [2024-11-10 18:12:27,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 84 transitions, 359 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:27,817 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 165 flow [2024-11-10 18:12:27,818 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-10 18:12:27,819 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-11-10 18:12:27,819 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 165 flow [2024-11-10 18:12:27,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:27,819 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:27,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:27,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 18:12:27,820 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:27,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:27,821 INFO L85 PathProgramCache]: Analyzing trace with hash -982089441, now seen corresponding path program 1 times [2024-11-10 18:12:27,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:27,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323548289] [2024-11-10 18:12:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:27,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:27,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323548289] [2024-11-10 18:12:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323548289] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:12:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573266495] [2024-11-10 18:12:27,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:27,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:12:27,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:27,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:12:27,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:12:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:28,080 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:12:28,097 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:12:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:28,210 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:12:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:28,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573266495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:12:28,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:12:28,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-10 18:12:28,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731463299] [2024-11-10 18:12:28,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:12:28,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:12:28,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:28,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:12:28,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:12:28,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:28,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:28,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:28,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:34,461 INFO L124 PetriNetUnfolderBase]: 80995/98658 cut-off events. [2024-11-10 18:12:34,462 INFO L125 PetriNetUnfolderBase]: For 39365/39365 co-relation queries the response was YES. [2024-11-10 18:12:34,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239890 conditions, 98658 events. 80995/98658 cut-off events. For 39365/39365 co-relation queries the response was YES. Maximal size of possible extension queue 4278. Compared 506630 event pairs, 21243 based on Foata normal form. 1399/97862 useless extension candidates. Maximal degree in co-relation 239883. Up to 42104 conditions per place. [2024-11-10 18:12:35,001 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 110 selfloop transitions, 6 changer transitions 14/147 dead transitions. [2024-11-10 18:12:35,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 147 transitions, 691 flow [2024-11-10 18:12:35,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:35,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:35,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-11-10 18:12:35,004 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7181818181818181 [2024-11-10 18:12:35,004 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 165 flow. Second operand 5 states and 237 transitions. [2024-11-10 18:12:35,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 147 transitions, 691 flow [2024-11-10 18:12:35,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 147 transitions, 682 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:35,016 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 199 flow [2024-11-10 18:12:35,016 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=199, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-11-10 18:12:35,017 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-11-10 18:12:35,017 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 199 flow [2024-11-10 18:12:35,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 5 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:35,017 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:35,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:35,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-10 18:12:35,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:12:35,223 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:35,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:35,224 INFO L85 PathProgramCache]: Analyzing trace with hash -537562091, now seen corresponding path program 1 times [2024-11-10 18:12:35,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858190343] [2024-11-10 18:12:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:35,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 18:12:35,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:35,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858190343] [2024-11-10 18:12:35,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858190343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:35,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:35,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:35,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246963608] [2024-11-10 18:12:35,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:35,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:35,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:35,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:35,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:35,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:35,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 199 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:35,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:35,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:35,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:41,481 INFO L124 PetriNetUnfolderBase]: 81451/97451 cut-off events. [2024-11-10 18:12:41,481 INFO L125 PetriNetUnfolderBase]: For 71197/71197 co-relation queries the response was YES. [2024-11-10 18:12:41,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253191 conditions, 97451 events. 81451/97451 cut-off events. For 71197/71197 co-relation queries the response was YES. Maximal size of possible extension queue 4167. Compared 471833 event pairs, 11629 based on Foata normal form. 980/98162 useless extension candidates. Maximal degree in co-relation 253182. Up to 46235 conditions per place. [2024-11-10 18:12:41,918 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 87 selfloop transitions, 4 changer transitions 37/145 dead transitions. [2024-11-10 18:12:41,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 145 transitions, 719 flow [2024-11-10 18:12:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-11-10 18:12:41,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-11-10 18:12:41,919 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 199 flow. Second operand 5 states and 229 transitions. [2024-11-10 18:12:41,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 145 transitions, 719 flow [2024-11-10 18:12:41,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 145 transitions, 713 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:41,993 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 207 flow [2024-11-10 18:12:41,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-11-10 18:12:41,994 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2024-11-10 18:12:41,994 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 207 flow [2024-11-10 18:12:41,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:41,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:41,995 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:41,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 18:12:41,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:41,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:41,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1829494415, now seen corresponding path program 2 times [2024-11-10 18:12:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:41,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534902366] [2024-11-10 18:12:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:41,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:42,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:42,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534902366] [2024-11-10 18:12:42,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534902366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:42,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:42,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:42,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807756842] [2024-11-10 18:12:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:42,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:42,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:42,146 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:42,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 207 flow. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:42,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:47,709 INFO L124 PetriNetUnfolderBase]: 70588/87297 cut-off events. [2024-11-10 18:12:47,709 INFO L125 PetriNetUnfolderBase]: For 52848/52849 co-relation queries the response was YES. [2024-11-10 18:12:47,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221354 conditions, 87297 events. 70588/87297 cut-off events. For 52848/52849 co-relation queries the response was YES. Maximal size of possible extension queue 3908. Compared 487427 event pairs, 12917 based on Foata normal form. 1069/86021 useless extension candidates. Maximal degree in co-relation 221343. Up to 31427 conditions per place. [2024-11-10 18:12:48,471 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 110 selfloop transitions, 6 changer transitions 2/136 dead transitions. [2024-11-10 18:12:48,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 136 transitions, 724 flow [2024-11-10 18:12:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:48,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 217 transitions. [2024-11-10 18:12:48,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6575757575757576 [2024-11-10 18:12:48,473 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 207 flow. Second operand 5 states and 217 transitions. [2024-11-10 18:12:48,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 136 transitions, 724 flow [2024-11-10 18:12:48,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 711 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:48,482 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 237 flow [2024-11-10 18:12:48,482 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-11-10 18:12:48,483 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-11-10 18:12:48,483 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 237 flow [2024-11-10 18:12:48,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:48,483 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:48,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:48,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:12:48,484 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:48,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:48,485 INFO L85 PathProgramCache]: Analyzing trace with hash 107526467, now seen corresponding path program 1 times [2024-11-10 18:12:48,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:48,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647960211] [2024-11-10 18:12:48,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:48,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:48,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:48,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647960211] [2024-11-10 18:12:48,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647960211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:12:48,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727843206] [2024-11-10 18:12:48,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:48,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:12:48,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:48,597 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:12:48,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:12:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:48,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:12:48,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:12:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:48,779 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:12:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 18:12:48,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727843206] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:12:48,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:12:48,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-10 18:12:48,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498743237] [2024-11-10 18:12:48,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:12:48,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 18:12:48,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:48,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 18:12:48,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 18:12:48,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:48,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:48,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:48,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:48,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:53,877 INFO L124 PetriNetUnfolderBase]: 61040/73198 cut-off events. [2024-11-10 18:12:53,878 INFO L125 PetriNetUnfolderBase]: For 84202/85811 co-relation queries the response was YES. [2024-11-10 18:12:54,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207807 conditions, 73198 events. 61040/73198 cut-off events. For 84202/85811 co-relation queries the response was YES. Maximal size of possible extension queue 3179. Compared 348235 event pairs, 17436 based on Foata normal form. 1842/73394 useless extension candidates. Maximal degree in co-relation 207793. Up to 58635 conditions per place. [2024-11-10 18:12:54,412 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 115 selfloop transitions, 6 changer transitions 0/139 dead transitions. [2024-11-10 18:12:54,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 139 transitions, 757 flow [2024-11-10 18:12:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 216 transitions. [2024-11-10 18:12:54,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2024-11-10 18:12:54,414 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 237 flow. Second operand 5 states and 216 transitions. [2024-11-10 18:12:54,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 139 transitions, 757 flow [2024-11-10 18:12:54,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 740 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:54,466 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 273 flow [2024-11-10 18:12:54,467 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-10 18:12:54,467 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-11-10 18:12:54,468 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 273 flow [2024-11-10 18:12:54,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:54,468 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:54,468 INFO L204 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:54,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:12:54,669 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,SelfDestructingSolverStorable7 [2024-11-10 18:12:54,670 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:54,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:54,671 INFO L85 PathProgramCache]: Analyzing trace with hash 620593390, now seen corresponding path program 1 times [2024-11-10 18:12:54,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:54,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697247126] [2024-11-10 18:12:54,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:54,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 18:12:54,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:54,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697247126] [2024-11-10 18:12:54,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697247126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:54,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:54,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:54,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705458367] [2024-11-10 18:12:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:54,807 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:54,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:54,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:54,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:54,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand