./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.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 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:47:27,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:47:27,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:47:27,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:47:27,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:47:27,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:47:27,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:47:27,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:47:27,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:47:27,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:47:27,731 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:47:27,731 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:47:27,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:47:27,732 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:47:27,732 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:47:27,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:47:27,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:47:27,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:47:27,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:47:27,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:47:27,733 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:47:27,734 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:47:27,734 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:47:27,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:47:27,734 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:47:27,734 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:47:27,735 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:47:27,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:47:27,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:47:27,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:47:27,735 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:47:27,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:47:27,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:47:27,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:27,736 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:47:27,736 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:47:27,737 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:47:27,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:47:27,740 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:47:27,740 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:47:27,741 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:47:27,741 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:47:27,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-10-14 19:47:27,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:47:27,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:47:27,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:47:27,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:47:27,953 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:47:27,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-14 19:47:29,148 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:47:29,303 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:47:29,304 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-10-14 19:47:29,310 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9975a3058/2341376473cb4a5c98a40c010fe06534/FLAGff56d54f6 [2024-10-14 19:47:29,716 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9975a3058/2341376473cb4a5c98a40c010fe06534 [2024-10-14 19:47:29,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:47:29,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:47:29,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:29,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:47:29,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:47:29,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd99161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29, skipping insertion in model container [2024-10-14 19:47:29,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:47:29,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:29,917 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:47:29,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:47:29,951 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:47:29,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29 WrapperNode [2024-10-14 19:47:29,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:47:29,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:29,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:47:29,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:47:29,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,983 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-10-14 19:47:29,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:47:29,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:47:29,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:47:29,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:47:29,993 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:29,996 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,009 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]. [2024-10-14 19:47:30,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,019 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:47:30,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:47:30,025 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:47:30,025 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:47:30,026 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (1/1) ... [2024-10-14 19:47:30,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:47:30,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:30,056 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) [2024-10-14 19:47:30,058 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 [2024-10-14 19:47:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:47:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-14 19:47:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-10-14 19:47:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:47:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:47:30,105 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:47:30,234 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:47:30,236 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:47:30,421 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:47:30,421 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:47:30,524 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:47:30,524 INFO L314 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-14 19:47:30,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:30 BoogieIcfgContainer [2024-10-14 19:47:30,525 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:47:30,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:47:30,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:47:30,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:47:30,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:47:29" (1/3) ... [2024-10-14 19:47:30,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6bf4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:30, skipping insertion in model container [2024-10-14 19:47:30,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:47:29" (2/3) ... [2024-10-14 19:47:30,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e6bf4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:47:30, skipping insertion in model container [2024-10-14 19:47:30,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:47:30" (3/3) ... [2024-10-14 19:47:30,532 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-10-14 19:47:30,546 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:47:30,546 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-14 19:47:30,546 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:47:30,597 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-10-14 19:47:30,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 48 transitions, 138 flow [2024-10-14 19:47:30,653 INFO L124 PetriNetUnfolderBase]: 6/42 cut-off events. [2024-10-14 19:47:30,657 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:47:30,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 42 events. 6/42 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-10-14 19:47:30,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 48 transitions, 138 flow [2024-10-14 19:47:30,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 41 transitions, 118 flow [2024-10-14 19:47:30,673 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:47:30,678 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;@52c89ad9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:47:30,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-14 19:47:30,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:47:30,693 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-10-14 19:47:30,693 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-14 19:47:30,693 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:30,694 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] [2024-10-14 19:47:30,695 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:30,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:30,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1676365791, now seen corresponding path program 1 times [2024-10-14 19:47:30,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:30,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213419197] [2024-10-14 19:47:30,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:30,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:31,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:31,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213419197] [2024-10-14 19:47:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213419197] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:31,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:31,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:47:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362672159] [2024-10-14 19:47:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:31,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:47:31,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:31,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:47:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:47:31,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:31,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 41 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-14 19:47:31,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:31,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:31,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:32,682 INFO L124 PetriNetUnfolderBase]: 18895/21812 cut-off events. [2024-10-14 19:47:32,682 INFO L125 PetriNetUnfolderBase]: For 1387/1387 co-relation queries the response was YES. [2024-10-14 19:47:32,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44837 conditions, 21812 events. 18895/21812 cut-off events. For 1387/1387 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 69668 event pairs, 1570 based on Foata normal form. 2/11929 useless extension candidates. Maximal degree in co-relation 38647. Up to 20725 conditions per place. [2024-10-14 19:47:32,855 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 7 changer transitions 1/68 dead transitions. [2024-10-14 19:47:32,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 68 transitions, 327 flow [2024-10-14 19:47:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:47:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:47:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-10-14 19:47:32,867 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-14 19:47:32,868 INFO L175 Difference]: Start difference. First operand has 54 places, 41 transitions, 118 flow. Second operand 3 states and 105 transitions. [2024-10-14 19:47:32,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 68 transitions, 327 flow [2024-10-14 19:47:32,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 68 transitions, 281 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-10-14 19:47:32,891 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 137 flow [2024-10-14 19:47:32,892 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2024-10-14 19:47:32,896 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2024-10-14 19:47:32,897 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 137 flow [2024-10-14 19:47:32,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-10-14 19:47:32,898 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:32,898 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] [2024-10-14 19:47:32,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:47:32,899 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:32,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:32,900 INFO L85 PathProgramCache]: Analyzing trace with hash -300462063, now seen corresponding path program 1 times [2024-10-14 19:47:32,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:32,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136811816] [2024-10-14 19:47:32,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:32,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:33,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:33,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136811816] [2024-10-14 19:47:33,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136811816] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:33,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:33,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:33,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171653797] [2024-10-14 19:47:33,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:33,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:33,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:33,055 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:33,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:33,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:33,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:33,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:34,587 INFO L124 PetriNetUnfolderBase]: 23887/27736 cut-off events. [2024-10-14 19:47:34,587 INFO L125 PetriNetUnfolderBase]: For 6134/6134 co-relation queries the response was YES. [2024-10-14 19:47:34,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68982 conditions, 27736 events. 23887/27736 cut-off events. For 6134/6134 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 95880 event pairs, 2287 based on Foata normal form. 294/27960 useless extension candidates. Maximal degree in co-relation 18889. Up to 12315 conditions per place. [2024-10-14 19:47:34,845 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 106 selfloop transitions, 10 changer transitions 0/123 dead transitions. [2024-10-14 19:47:34,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 123 transitions, 595 flow [2024-10-14 19:47:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2024-10-14 19:47:34,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-10-14 19:47:34,848 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 137 flow. Second operand 5 states and 176 transitions. [2024-10-14 19:47:34,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 123 transitions, 595 flow [2024-10-14 19:47:34,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 123 transitions, 583 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:34,853 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 195 flow [2024-10-14 19:47:34,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-10-14 19:47:34,854 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2024-10-14 19:47:34,854 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 195 flow [2024-10-14 19:47:34,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:34,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:34,855 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] [2024-10-14 19:47:34,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:47:34,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:34,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 583350020, now seen corresponding path program 1 times [2024-10-14 19:47:34,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:34,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422135852] [2024-10-14 19:47:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:34,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:34,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422135852] [2024-10-14 19:47:34,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422135852] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:34,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:34,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:34,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743922589] [2024-10-14 19:47:34,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:34,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:34,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:34,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:34,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:34,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:34,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 52 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:34,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:36,355 INFO L124 PetriNetUnfolderBase]: 23497/27346 cut-off events. [2024-10-14 19:47:36,355 INFO L125 PetriNetUnfolderBase]: For 19643/19643 co-relation queries the response was YES. [2024-10-14 19:47:36,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77678 conditions, 27346 events. 23497/27346 cut-off events. For 19643/19643 co-relation queries the response was YES. Maximal size of possible extension queue 884. Compared 95801 event pairs, 1822 based on Foata normal form. 390/27666 useless extension candidates. Maximal degree in co-relation 40099. Up to 11925 conditions per place. [2024-10-14 19:47:36,645 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 105 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2024-10-14 19:47:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 612 flow [2024-10-14 19:47:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-10-14 19:47:36,647 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-10-14 19:47:36,647 INFO L175 Difference]: Start difference. First operand has 48 places, 52 transitions, 195 flow. Second operand 5 states and 174 transitions. [2024-10-14 19:47:36,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 612 flow [2024-10-14 19:47:36,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 120 transitions, 612 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:47:36,665 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 209 flow [2024-10-14 19:47:36,665 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-10-14 19:47:36,666 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-10-14 19:47:36,666 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 209 flow [2024-10-14 19:47:36,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:36,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:36,666 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] [2024-10-14 19:47:36,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:47:36,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:36,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:36,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1393250483, now seen corresponding path program 2 times [2024-10-14 19:47:36,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:36,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562613933] [2024-10-14 19:47:36,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:36,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562613933] [2024-10-14 19:47:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562613933] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:47:36,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784524374] [2024-10-14 19:47:36,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:47:36,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:36,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:36,766 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) [2024-10-14 19:47:36,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 19:47:36,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:47:36,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:47:36,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:47:36,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:37,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:37,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:37,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784524374] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:37,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:47:37,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-14 19:47:37,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030392894] [2024-10-14 19:47:37,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:37,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:47:37,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:37,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:47:37,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:47:37,205 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:37,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 19:47:37,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:37,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:37,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:38,826 INFO L124 PetriNetUnfolderBase]: 22438/26333 cut-off events. [2024-10-14 19:47:38,826 INFO L125 PetriNetUnfolderBase]: For 25522/25522 co-relation queries the response was YES. [2024-10-14 19:47:38,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77729 conditions, 26333 events. 22438/26333 cut-off events. For 25522/25522 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 96121 event pairs, 5044 based on Foata normal form. 565/26623 useless extension candidates. Maximal degree in co-relation 36142. Up to 13880 conditions per place. [2024-10-14 19:47:38,954 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 103 selfloop transitions, 8 changer transitions 0/118 dead transitions. [2024-10-14 19:47:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 118 transitions, 632 flow [2024-10-14 19:47:38,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-10-14 19:47:38,956 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-10-14 19:47:38,956 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 209 flow. Second operand 5 states and 175 transitions. [2024-10-14 19:47:38,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 118 transitions, 632 flow [2024-10-14 19:47:38,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:38,979 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 252 flow [2024-10-14 19:47:38,979 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-10-14 19:47:38,980 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-10-14 19:47:38,980 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 252 flow [2024-10-14 19:47:38,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-10-14 19:47:38,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:38,981 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] [2024-10-14 19:47:38,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 19:47:39,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:39,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:39,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:39,182 INFO L85 PathProgramCache]: Analyzing trace with hash 535697087, now seen corresponding path program 1 times [2024-10-14 19:47:39,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:39,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879526743] [2024-10-14 19:47:39,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:39,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879526743] [2024-10-14 19:47:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879526743] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:47:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762067719] [2024-10-14 19:47:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:39,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:39,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:39,270 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) [2024-10-14 19:47:39,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 19:47:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:39,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:47:39,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:39,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:39,478 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:39,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:39,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762067719] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:39,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:47:39,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-14 19:47:39,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743413426] [2024-10-14 19:47:39,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:39,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:47:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:39,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:47:39,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:47:39,538 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:39,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-14 19:47:39,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:39,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:39,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:41,419 INFO L124 PetriNetUnfolderBase]: 30687/36524 cut-off events. [2024-10-14 19:47:41,419 INFO L125 PetriNetUnfolderBase]: For 61851/61857 co-relation queries the response was YES. [2024-10-14 19:47:41,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117832 conditions, 36524 events. 30687/36524 cut-off events. For 61851/61857 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 147034 event pairs, 4698 based on Foata normal form. 769/36985 useless extension candidates. Maximal degree in co-relation 74570. Up to 17662 conditions per place. [2024-10-14 19:47:41,718 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 133 selfloop transitions, 8 changer transitions 0/148 dead transitions. [2024-10-14 19:47:41,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 148 transitions, 1028 flow [2024-10-14 19:47:41,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:41,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-10-14 19:47:41,719 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7125 [2024-10-14 19:47:41,719 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 252 flow. Second operand 5 states and 171 transitions. [2024-10-14 19:47:41,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 148 transitions, 1028 flow [2024-10-14 19:47:41,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 148 transitions, 1001 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:41,736 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 298 flow [2024-10-14 19:47:41,736 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-10-14 19:47:41,736 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 10 predicate places. [2024-10-14 19:47:41,737 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 298 flow [2024-10-14 19:47:41,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 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) [2024-10-14 19:47:41,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:41,737 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] [2024-10-14 19:47:41,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 19:47:41,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:41,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:41,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash -354479243, now seen corresponding path program 1 times [2024-10-14 19:47:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262802111] [2024-10-14 19:47:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:42,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:42,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262802111] [2024-10-14 19:47:42,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262802111] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:47:42,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509415670] [2024-10-14 19:47:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:47:42,031 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) [2024-10-14 19:47:42,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 19:47:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:42,096 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:47:42,098 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:47:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:42,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:47:42,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:42,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509415670] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:47:42,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:47:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-14 19:47:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675467660] [2024-10-14 19:47:42,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:47:42,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:47:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:47:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:47:42,308 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:42,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 298 flow. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2024-10-14 19:47:42,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:42,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:42,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:45,063 INFO L124 PetriNetUnfolderBase]: 41227/49968 cut-off events. [2024-10-14 19:47:45,063 INFO L125 PetriNetUnfolderBase]: For 119606/119684 co-relation queries the response was YES. [2024-10-14 19:47:45,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185497 conditions, 49968 events. 41227/49968 cut-off events. For 119606/119684 co-relation queries the response was YES. Maximal size of possible extension queue 1947. Compared 225072 event pairs, 7141 based on Foata normal form. 923/50083 useless extension candidates. Maximal degree in co-relation 116907. Up to 22830 conditions per place. [2024-10-14 19:47:45,403 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 143 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2024-10-14 19:47:45,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 158 transitions, 1187 flow [2024-10-14 19:47:45,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:45,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:45,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-10-14 19:47:45,405 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6708333333333333 [2024-10-14 19:47:45,405 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 298 flow. Second operand 5 states and 161 transitions. [2024-10-14 19:47:45,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 158 transitions, 1187 flow [2024-10-14 19:47:45,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 158 transitions, 1187 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:47:45,447 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 353 flow [2024-10-14 19:47:45,447 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=353, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-10-14 19:47:45,448 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 17 predicate places. [2024-10-14 19:47:45,448 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 353 flow [2024-10-14 19:47:45,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 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) [2024-10-14 19:47:45,448 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:45,448 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] [2024-10-14 19:47:45,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-14 19:47:45,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:47:45,649 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:45,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:45,649 INFO L85 PathProgramCache]: Analyzing trace with hash -889192730, now seen corresponding path program 1 times [2024-10-14 19:47:45,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:45,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367524323] [2024-10-14 19:47:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:45,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367524323] [2024-10-14 19:47:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367524323] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:45,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:45,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285392790] [2024-10-14 19:47:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:45,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:45,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:45,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:45,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:45,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:45,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:48,588 INFO L124 PetriNetUnfolderBase]: 40645/48942 cut-off events. [2024-10-14 19:47:48,588 INFO L125 PetriNetUnfolderBase]: For 135470/135548 co-relation queries the response was YES. [2024-10-14 19:47:48,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202750 conditions, 48942 events. 40645/48942 cut-off events. For 135470/135548 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 215706 event pairs, 2077 based on Foata normal form. 595/49449 useless extension candidates. Maximal degree in co-relation 127962. Up to 22248 conditions per place. [2024-10-14 19:47:48,965 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 157 selfloop transitions, 10 changer transitions 0/174 dead transitions. [2024-10-14 19:47:48,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 174 transitions, 1347 flow [2024-10-14 19:47:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:48,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-14 19:47:48,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-10-14 19:47:48,966 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 353 flow. Second operand 5 states and 167 transitions. [2024-10-14 19:47:48,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 174 transitions, 1347 flow [2024-10-14 19:47:49,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 174 transitions, 1347 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:47:49,484 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 416 flow [2024-10-14 19:47:49,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=416, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-10-14 19:47:49,485 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-10-14 19:47:49,485 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 416 flow [2024-10-14 19:47:49,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:49,485 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:49,485 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] [2024-10-14 19:47:49,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:47:49,485 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:49,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:49,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1818465662, now seen corresponding path program 1 times [2024-10-14 19:47:49,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:49,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813169329] [2024-10-14 19:47:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:49,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:49,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:49,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:49,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813169329] [2024-10-14 19:47:49,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813169329] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:49,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:49,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:49,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798731108] [2024-10-14 19:47:49,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:49,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:49,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:49,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:49,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:49,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:49,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:49,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:49,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:49,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:52,469 INFO L124 PetriNetUnfolderBase]: 40187/48708 cut-off events. [2024-10-14 19:47:52,469 INFO L125 PetriNetUnfolderBase]: For 156421/156499 co-relation queries the response was YES. [2024-10-14 19:47:52,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210811 conditions, 48708 events. 40187/48708 cut-off events. For 156421/156499 co-relation queries the response was YES. Maximal size of possible extension queue 1909. Compared 214594 event pairs, 2107 based on Foata normal form. 471/48823 useless extension candidates. Maximal degree in co-relation 133227. Up to 21790 conditions per place. [2024-10-14 19:47:53,073 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 167 selfloop transitions, 10 changer transitions 0/184 dead transitions. [2024-10-14 19:47:53,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 184 transitions, 1560 flow [2024-10-14 19:47:53,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:53,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:53,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-14 19:47:53,075 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-14 19:47:53,075 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 416 flow. Second operand 5 states and 159 transitions. [2024-10-14 19:47:53,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 184 transitions, 1560 flow [2024-10-14 19:47:53,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 184 transitions, 1509 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:53,500 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 464 flow [2024-10-14 19:47:53,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=464, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-10-14 19:47:53,501 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 26 predicate places. [2024-10-14 19:47:53,501 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 464 flow [2024-10-14 19:47:53,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:53,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:53,501 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] [2024-10-14 19:47:53,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 19:47:53,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:53,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash -996657556, now seen corresponding path program 2 times [2024-10-14 19:47:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:53,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586995313] [2024-10-14 19:47:53,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:53,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:53,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:53,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586995313] [2024-10-14 19:47:53,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586995313] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:53,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:53,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:53,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395104387] [2024-10-14 19:47:53,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:53,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:53,580 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:53,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 464 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:53,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:53,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:53,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:47:56,728 INFO L124 PetriNetUnfolderBase]: 39283/47956 cut-off events. [2024-10-14 19:47:56,729 INFO L125 PetriNetUnfolderBase]: For 152465/152543 co-relation queries the response was YES. [2024-10-14 19:47:56,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214573 conditions, 47956 events. 39283/47956 cut-off events. For 152465/152543 co-relation queries the response was YES. Maximal size of possible extension queue 1851. Compared 220485 event pairs, 6301 based on Foata normal form. 917/48365 useless extension candidates. Maximal degree in co-relation 137166. Up to 27379 conditions per place. [2024-10-14 19:47:57,118 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 160 selfloop transitions, 10 changer transitions 0/177 dead transitions. [2024-10-14 19:47:57,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 177 transitions, 1481 flow [2024-10-14 19:47:57,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:47:57,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:47:57,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-10-14 19:47:57,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-10-14 19:47:57,120 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 464 flow. Second operand 5 states and 156 transitions. [2024-10-14 19:47:57,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 177 transitions, 1481 flow [2024-10-14 19:47:57,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 177 transitions, 1466 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-10-14 19:47:57,885 INFO L231 Difference]: Finished difference. Result has 85 places, 77 transitions, 503 flow [2024-10-14 19:47:57,886 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=503, PETRI_PLACES=85, PETRI_TRANSITIONS=77} [2024-10-14 19:47:57,886 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 31 predicate places. [2024-10-14 19:47:57,886 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 77 transitions, 503 flow [2024-10-14 19:47:57,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:57,886 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:47:57,887 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] [2024-10-14 19:47:57,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 19:47:57,887 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:47:57,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:47:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash 487005157, now seen corresponding path program 2 times [2024-10-14 19:47:57,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:47:57,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147000109] [2024-10-14 19:47:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:47:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:47:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:47:57,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:47:57,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:47:57,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147000109] [2024-10-14 19:47:57,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147000109] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:47:57,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:47:57,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:47:57,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160214517] [2024-10-14 19:47:57,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:47:57,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:47:57,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:47:57,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:47:57,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:47:57,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:47:57,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 77 transitions, 503 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:47:57,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:47:57,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:47:57,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:00,733 INFO L124 PetriNetUnfolderBase]: 35117/42710 cut-off events. [2024-10-14 19:48:00,734 INFO L125 PetriNetUnfolderBase]: For 144682/144760 co-relation queries the response was YES. [2024-10-14 19:48:00,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198670 conditions, 42710 events. 35117/42710 cut-off events. For 144682/144760 co-relation queries the response was YES. Maximal size of possible extension queue 1593. Compared 186825 event pairs, 2119 based on Foata normal form. 465/42819 useless extension candidates. Maximal degree in co-relation 176386. Up to 19276 conditions per place. [2024-10-14 19:48:01,091 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 169 selfloop transitions, 9 changer transitions 0/185 dead transitions. [2024-10-14 19:48:01,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 185 transitions, 1567 flow [2024-10-14 19:48:01,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:01,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-10-14 19:48:01,092 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-10-14 19:48:01,092 INFO L175 Difference]: Start difference. First operand has 85 places, 77 transitions, 503 flow. Second operand 5 states and 159 transitions. [2024-10-14 19:48:01,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 185 transitions, 1567 flow [2024-10-14 19:48:01,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 185 transitions, 1547 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-10-14 19:48:01,954 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 498 flow [2024-10-14 19:48:01,955 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2024-10-14 19:48:01,955 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2024-10-14 19:48:01,955 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 498 flow [2024-10-14 19:48:01,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:48:01,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:01,956 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] [2024-10-14 19:48:01,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 19:48:01,956 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:48:01,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:01,956 INFO L85 PathProgramCache]: Analyzing trace with hash -488713583, now seen corresponding path program 2 times [2024-10-14 19:48:01,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:48:01,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784706705] [2024-10-14 19:48:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:01,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:48:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:48:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784706705] [2024-10-14 19:48:02,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784706705] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:48:02,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:48:02,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 19:48:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868132835] [2024-10-14 19:48:02,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:48:02,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 19:48:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:48:02,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 19:48:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 19:48:02,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:48:02,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:48:02,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:02,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:48:02,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:48:04,727 INFO L124 PetriNetUnfolderBase]: 30549/36864 cut-off events. [2024-10-14 19:48:04,728 INFO L125 PetriNetUnfolderBase]: For 140367/140445 co-relation queries the response was YES. [2024-10-14 19:48:04,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173189 conditions, 36864 events. 30549/36864 cut-off events. For 140367/140445 co-relation queries the response was YES. Maximal size of possible extension queue 1365. Compared 155936 event pairs, 1948 based on Foata normal form. 505/37293 useless extension candidates. Maximal degree in co-relation 153253. Up to 16532 conditions per place. [2024-10-14 19:48:04,979 INFO L140 encePairwiseOnDemand]: 43/48 looper letters, 184 selfloop transitions, 9 changer transitions 0/200 dead transitions. [2024-10-14 19:48:04,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 200 transitions, 1750 flow [2024-10-14 19:48:04,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 19:48:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-14 19:48:04,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-10-14 19:48:04,980 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6958333333333333 [2024-10-14 19:48:04,980 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 498 flow. Second operand 5 states and 167 transitions. [2024-10-14 19:48:04,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 200 transitions, 1750 flow [2024-10-14 19:48:05,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 200 transitions, 1713 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-14 19:48:05,244 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 502 flow [2024-10-14 19:48:05,244 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=502, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-10-14 19:48:05,245 INFO L277 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-10-14 19:48:05,245 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 502 flow [2024-10-14 19:48:05,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 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) [2024-10-14 19:48:05,245 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:48:05,245 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] [2024-10-14 19:48:05,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 19:48:05,245 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-10-14 19:48:05,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:48:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -2000641460, now seen corresponding path program 2 times [2024-10-14 19:48:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:48:05,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638649844] [2024-10-14 19:48:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:48:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:48:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:48:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:05,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:48:05,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638649844] [2024-10-14 19:48:05,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638649844] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 19:48:05,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605570755] [2024-10-14 19:48:05,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-14 19:48:05,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 19:48:05,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:48:05,311 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) [2024-10-14 19:48:05,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 19:48:05,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-14 19:48:05,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-14 19:48:05,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 19:48:05,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 19:48:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:05,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 19:48:05,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:48:05,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605570755] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 19:48:05,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 19:48:05,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-10-14 19:48:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905983373] [2024-10-14 19:48:05,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 19:48:05,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 19:48:05,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:48:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 19:48:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-14 19:48:05,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-10-14 19:48:05,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 502 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2024-10-14 19:48:05,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:48:05,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-10-14 19:48:05,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand