./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/bench-exp3x3.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-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 18:12:12,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 18:12:12,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 18:12:12,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 18:12:12,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 18:12:12,376 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 18:12:12,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 18:12:12,377 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 18:12:12,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 18:12:12,378 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 18:12:12,378 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 18:12:12,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 18:12:12,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 18:12:12,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 18:12:12,380 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 18:12:12,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 18:12:12,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 18:12:12,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 18:12:12,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 18:12:12,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 18:12:12,382 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 18:12:12,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 18:12:12,383 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 18:12:12,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 18:12:12,384 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 18:12:12,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 18:12:12,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 18:12:12,385 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 18:12:12,385 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 18:12:12,385 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 18:12:12,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 18:12:12,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 18:12:12,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 18:12:12,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:12:12,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 18:12:12,387 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 18:12:12,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 18:12:12,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 18:12:12,388 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 18:12:12,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 18:12:12,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 18:12:12,389 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 18:12:12,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21325645cf7d2c394d0eaa1628a16a96624f1addcdd1b56c7e8aa2473acfaf07 [2024-11-10 18:12:12,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 18:12:12,687 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 18:12:12,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 18:12:12,693 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 18:12:12,694 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 18:12:12,695 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-10 18:12:14,240 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 18:12:14,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 18:12:14,431 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp3x3.wvr.c [2024-11-10 18:12:14,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1938c3429/3653fa5d62284466b1b5ac4db8492010/FLAGcb1819f6f [2024-11-10 18:12:14,823 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1938c3429/3653fa5d62284466b1b5ac4db8492010 [2024-11-10 18:12:14,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 18:12:14,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 18:12:14,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 18:12:14,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 18:12:14,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 18:12:14,833 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,834 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8f620f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:14, skipping insertion in model container [2024-11-10 18:12:14,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 06:12:14" (1/1) ... [2024-11-10 18:12:14,859 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 18:12:15,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:12:15,059 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 18:12:15,081 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 18:12:15,098 INFO L204 MainTranslator]: Completed translation [2024-11-10 18:12:15,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15 WrapperNode [2024-11-10 18:12:15,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 18:12:15,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 18:12:15,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 18:12:15,100 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 18:12:15,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,114 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,135 INFO L138 Inliner]: procedures = 21, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 97 [2024-11-10 18:12:15,135 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 18:12:15,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 18:12:15,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 18:12:15,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 18:12:15,150 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,153 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,195 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 18:12:15,195 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,195 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,200 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,208 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,209 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,210 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,228 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 18:12:15,229 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 18:12:15,229 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 18:12:15,229 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 18:12:15,230 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (1/1) ... [2024-11-10 18:12:15,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 18:12:15,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:15,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 18:12:15,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 18:12:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 18:12:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 18:12:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 18:12:15,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 18:12:15,338 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 18:12:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 18:12:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 18:12:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 18:12:15,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 18:12:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 18:12:15,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-11-10 18:12:15,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-11-10 18:12:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-11-10 18:12:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-11-10 18:12:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 18:12:15,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 18:12:15,344 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 18:12:15,477 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 18:12:15,479 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 18:12:15,774 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 18:12:15,774 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 18:12:15,948 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 18:12:15,949 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 18:12:15,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:12:15 BoogieIcfgContainer [2024-11-10 18:12:15,949 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 18:12:15,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 18:12:15,954 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 18:12:15,957 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 18:12:15,958 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 06:12:14" (1/3) ... [2024-11-10 18:12:15,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c43ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:12:15, skipping insertion in model container [2024-11-10 18:12:15,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 06:12:15" (2/3) ... [2024-11-10 18:12:15,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c43ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 06:12:15, skipping insertion in model container [2024-11-10 18:12:15,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 06:12:15" (3/3) ... [2024-11-10 18:12:15,963 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2024-11-10 18:12:15,981 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 18:12:15,982 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-10 18:12:15,982 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 18:12:16,066 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2024-11-10 18:12:16,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 66 transitions, 174 flow [2024-11-10 18:12:16,140 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2024-11-10 18:12:16,140 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:12:16,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 60 events. 12/60 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-11-10 18:12:16,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 66 transitions, 174 flow [2024-11-10 18:12:16,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 59 transitions, 154 flow [2024-11-10 18:12:16,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 18:12:16,171 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;@236e9c32, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 18:12:16,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-10 18:12:16,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 18:12:16,200 INFO L124 PetriNetUnfolderBase]: 12/56 cut-off events. [2024-11-10 18:12:16,201 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-10 18:12:16,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:16,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:16,204 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:16,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash -879150577, now seen corresponding path program 1 times [2024-11-10 18:12:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:16,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794818666] [2024-11-10 18:12:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:16,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:16,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794818666] [2024-11-10 18:12:16,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794818666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:16,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:16,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:16,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906324305] [2024-11-10 18:12:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:16,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 18:12:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:16,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 18:12:16,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 18:12:16,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:16,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 154 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:16,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:16,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:16,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:18,670 INFO L124 PetriNetUnfolderBase]: 14584/18591 cut-off events. [2024-11-10 18:12:18,671 INFO L125 PetriNetUnfolderBase]: For 647/647 co-relation queries the response was YES. [2024-11-10 18:12:18,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36461 conditions, 18591 events. 14584/18591 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 755. Compared 91392 event pairs, 6928 based on Foata normal form. 7572/24691 useless extension candidates. Maximal degree in co-relation 30976. Up to 16771 conditions per place. [2024-11-10 18:12:18,887 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 32 selfloop transitions, 0 changer transitions 0/51 dead transitions. [2024-11-10 18:12:18,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 202 flow [2024-11-10 18:12:18,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 18:12:18,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 18:12:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 91 transitions. [2024-11-10 18:12:18,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6893939393939394 [2024-11-10 18:12:18,903 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 154 flow. Second operand 2 states and 91 transitions. [2024-11-10 18:12:18,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 202 flow [2024-11-10 18:12:18,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 51 transitions, 178 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-10 18:12:18,943 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 114 flow [2024-11-10 18:12:18,945 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-10 18:12:18,949 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2024-11-10 18:12:18,951 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 114 flow [2024-11-10 18:12:18,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:18,952 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:18,952 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:18,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 18:12:18,952 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:18,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1355909315, now seen corresponding path program 1 times [2024-11-10 18:12:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414076254] [2024-11-10 18:12:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:18,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:19,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414076254] [2024-11-10 18:12:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414076254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:19,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:19,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 18:12:19,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576461754] [2024-11-10 18:12:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:19,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 18:12:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 18:12:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 18:12:19,480 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 66 [2024-11-10 18:12:19,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:19,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:19,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 66 [2024-11-10 18:12:19,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:21,389 INFO L124 PetriNetUnfolderBase]: 18895/24144 cut-off events. [2024-11-10 18:12:21,389 INFO L125 PetriNetUnfolderBase]: For 303/303 co-relation queries the response was YES. [2024-11-10 18:12:21,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46316 conditions, 24144 events. 18895/24144 cut-off events. For 303/303 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 113913 event pairs, 4681 based on Foata normal form. 1/23893 useless extension candidates. Maximal degree in co-relation 46313. Up to 20725 conditions per place. [2024-11-10 18:12:21,581 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 53 selfloop transitions, 7 changer transitions 1/80 dead transitions. [2024-11-10 18:12:21,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 80 transitions, 305 flow [2024-11-10 18:12:21,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 18:12:21,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 18:12:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-10 18:12:21,587 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7070707070707071 [2024-11-10 18:12:21,587 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 114 flow. Second operand 3 states and 140 transitions. [2024-11-10 18:12:21,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 80 transitions, 305 flow [2024-11-10 18:12:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 80 transitions, 305 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:12:21,593 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 161 flow [2024-11-10 18:12:21,594 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2024-11-10 18:12:21,594 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-11-10 18:12:21,595 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 161 flow [2024-11-10 18:12:21,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:21,596 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:21,596 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:21,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 18:12:21,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:21,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:21,599 INFO L85 PathProgramCache]: Analyzing trace with hash 192252998, now seen corresponding path program 1 times [2024-11-10 18:12:21,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:21,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308194818] [2024-11-10 18:12:21,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:21,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:21,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:21,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308194818] [2024-11-10 18:12:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308194818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:21,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:21,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:21,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002946161] [2024-11-10 18:12:21,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:21,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:21,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:21,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:21,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:21,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:21,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:21,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:21,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:21,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:25,527 INFO L124 PetriNetUnfolderBase]: 44789/55802 cut-off events. [2024-11-10 18:12:25,528 INFO L125 PetriNetUnfolderBase]: For 16264/16264 co-relation queries the response was YES. [2024-11-10 18:12:25,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131296 conditions, 55802 events. 44789/55802 cut-off events. For 16264/16264 co-relation queries the response was YES. Maximal size of possible extension queue 2392. Compared 287631 event pairs, 3285 based on Foata normal form. 588/55926 useless extension candidates. Maximal degree in co-relation 131291. Up to 21202 conditions per place. [2024-11-10 18:12:25,961 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 111 selfloop transitions, 10 changer transitions 0/138 dead transitions. [2024-11-10 18:12:25,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 138 transitions, 635 flow [2024-11-10 18:12:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:25,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-11-10 18:12:25,966 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-10 18:12:25,967 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 161 flow. Second operand 5 states and 231 transitions. [2024-11-10 18:12:25,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 138 transitions, 635 flow [2024-11-10 18:12:25,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 138 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:25,972 INFO L231 Difference]: Finished difference. Result has 61 places, 64 transitions, 219 flow [2024-11-10 18:12:25,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=219, PETRI_PLACES=61, PETRI_TRANSITIONS=64} [2024-11-10 18:12:25,973 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, -5 predicate places. [2024-11-10 18:12:25,973 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 64 transitions, 219 flow [2024-11-10 18:12:25,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:25,974 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:25,974 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:25,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 18:12:25,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:25,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash -70884442, now seen corresponding path program 2 times [2024-11-10 18:12:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659648144] [2024-11-10 18:12:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659648144] [2024-11-10 18:12:26,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659648144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:12:26,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025954041] [2024-11-10 18:12:26,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 18:12:26,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:12:26,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:26,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:12:26,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 18:12:26,248 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 18:12:26,249 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 18:12:26,251 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:12:26,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:12:26,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:26,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:12:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:26,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025954041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:12:26,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:12:26,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 18:12:26,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679127850] [2024-11-10 18:12:26,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:12:26,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:12:26,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:26,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:12:26,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:12:26,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:26,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 64 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:26,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:26,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:26,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:30,621 INFO L124 PetriNetUnfolderBase]: 42004/53769 cut-off events. [2024-11-10 18:12:30,621 INFO L125 PetriNetUnfolderBase]: For 39301/39301 co-relation queries the response was YES. [2024-11-10 18:12:30,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138334 conditions, 53769 events. 42004/53769 cut-off events. For 39301/39301 co-relation queries the response was YES. Maximal size of possible extension queue 2306. Compared 293451 event pairs, 13111 based on Foata normal form. 807/52671 useless extension candidates. Maximal degree in co-relation 138327. Up to 26248 conditions per place. [2024-11-10 18:12:30,985 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 108 selfloop transitions, 10 changer transitions 0/135 dead transitions. [2024-11-10 18:12:30,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 135 transitions, 666 flow [2024-11-10 18:12:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:30,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 230 transitions. [2024-11-10 18:12:30,987 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.696969696969697 [2024-11-10 18:12:30,987 INFO L175 Difference]: Start difference. First operand has 61 places, 64 transitions, 219 flow. Second operand 5 states and 230 transitions. [2024-11-10 18:12:30,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 135 transitions, 666 flow [2024-11-10 18:12:30,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 666 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:12:30,998 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 273 flow [2024-11-10 18:12:30,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-11-10 18:12:30,999 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 1 predicate places. [2024-11-10 18:12:31,000 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 273 flow [2024-11-10 18:12:31,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:31,000 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:31,000 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:31,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 18:12:31,201 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 [2024-11-10 18:12:31,202 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:31,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:31,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1311293888, now seen corresponding path program 1 times [2024-11-10 18:12:31,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:31,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722269447] [2024-11-10 18:12:31,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:31,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:31,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722269447] [2024-11-10 18:12:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722269447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356350813] [2024-11-10 18:12:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:31,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:31,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:31,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:31,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:31,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:31,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:34,815 INFO L124 PetriNetUnfolderBase]: 43298/53453 cut-off events. [2024-11-10 18:12:34,816 INFO L125 PetriNetUnfolderBase]: For 56644/56644 co-relation queries the response was YES. [2024-11-10 18:12:34,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147266 conditions, 53453 events. 43298/53453 cut-off events. For 56644/56644 co-relation queries the response was YES. Maximal size of possible extension queue 2304. Compared 269524 event pairs, 3250 based on Foata normal form. 684/53609 useless extension candidates. Maximal degree in co-relation 147256. Up to 20518 conditions per place. [2024-11-10 18:12:35,175 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 113 selfloop transitions, 8 changer transitions 0/138 dead transitions. [2024-11-10 18:12:35,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 138 transitions, 714 flow [2024-11-10 18:12:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-11-10 18:12:35,176 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.693939393939394 [2024-11-10 18:12:35,176 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 273 flow. Second operand 5 states and 229 transitions. [2024-11-10 18:12:35,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 138 transitions, 714 flow [2024-11-10 18:12:35,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 138 transitions, 705 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:35,257 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 278 flow [2024-11-10 18:12:35,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=278, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-10 18:12:35,258 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 5 predicate places. [2024-11-10 18:12:35,258 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 278 flow [2024-11-10 18:12:35,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:35,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:35,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:35,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 18:12:35,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:35,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash -615062136, now seen corresponding path program 1 times [2024-11-10 18:12:35,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:35,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469437954] [2024-11-10 18:12:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:35,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469437954] [2024-11-10 18:12:35,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469437954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:12:35,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997740601] [2024-11-10 18:12:35,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:35,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:12:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:12:35,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:12:35,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 18:12:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:35,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:12:35,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:12:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:35,881 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:12:35,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:35,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997740601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:12:35,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:12:35,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 18:12:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704724602] [2024-11-10 18:12:35,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:12:35,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:12:35,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:12:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:12:35,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:35,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:35,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:35,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:35,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:43,396 INFO L124 PetriNetUnfolderBase]: 87095/113490 cut-off events. [2024-11-10 18:12:43,396 INFO L125 PetriNetUnfolderBase]: For 119674/126609 co-relation queries the response was YES. [2024-11-10 18:12:44,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296275 conditions, 113490 events. 87095/113490 cut-off events. For 119674/126609 co-relation queries the response was YES. Maximal size of possible extension queue 5385. Compared 738107 event pairs, 15886 based on Foata normal form. 2275/109436 useless extension candidates. Maximal degree in co-relation 296264. Up to 46099 conditions per place. [2024-11-10 18:12:44,661 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 120 selfloop transitions, 8 changer transitions 0/150 dead transitions. [2024-11-10 18:12:44,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 150 transitions, 891 flow [2024-11-10 18:12:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-11-10 18:12:44,663 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6909090909090909 [2024-11-10 18:12:44,663 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 278 flow. Second operand 5 states and 228 transitions. [2024-11-10 18:12:44,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 150 transitions, 891 flow [2024-11-10 18:12:44,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 876 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-10 18:12:44,698 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 324 flow [2024-11-10 18:12:44,698 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-11-10 18:12:44,698 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 11 predicate places. [2024-11-10 18:12:44,699 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 324 flow [2024-11-10 18:12:44,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.833333333333332) internal successors, (185), 6 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:44,699 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:44,699 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:44,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 18:12:44,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-10 18:12:44,900 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:44,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2054574776, now seen corresponding path program 2 times [2024-11-10 18:12:44,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:44,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189842481] [2024-11-10 18:12:44,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:44,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:44,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:45,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:45,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:45,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189842481] [2024-11-10 18:12:45,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189842481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:45,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:45,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:45,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934515617] [2024-11-10 18:12:45,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:45,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:45,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:45,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:45,024 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:45,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 324 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:45,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:45,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:45,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:51,537 INFO L124 PetriNetUnfolderBase]: 72825/91889 cut-off events. [2024-11-10 18:12:51,537 INFO L125 PetriNetUnfolderBase]: For 135074/140788 co-relation queries the response was YES. [2024-11-10 18:12:51,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270744 conditions, 91889 events. 72825/91889 cut-off events. For 135074/140788 co-relation queries the response was YES. Maximal size of possible extension queue 4268. Compared 528316 event pairs, 6910 based on Foata normal form. 1701/89954 useless extension candidates. Maximal degree in co-relation 270729. Up to 34930 conditions per place. [2024-11-10 18:12:52,482 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 121 selfloop transitions, 11 changer transitions 0/154 dead transitions. [2024-11-10 18:12:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 973 flow [2024-11-10 18:12:52,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:12:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:12:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-11-10 18:12:52,483 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6757575757575758 [2024-11-10 18:12:52,484 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 324 flow. Second operand 5 states and 223 transitions. [2024-11-10 18:12:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 973 flow [2024-11-10 18:12:52,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 973 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 18:12:52,638 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 385 flow [2024-11-10 18:12:52,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-10 18:12:52,639 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-11-10 18:12:52,639 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 385 flow [2024-11-10 18:12:52,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:52,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:12:52,640 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:12:52,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 18:12:52,640 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:12:52,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:12:52,640 INFO L85 PathProgramCache]: Analyzing trace with hash -751240986, now seen corresponding path program 1 times [2024-11-10 18:12:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:12:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788460315] [2024-11-10 18:12:52,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:12:52,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:12:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:12:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:12:52,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:12:52,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788460315] [2024-11-10 18:12:52,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788460315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 18:12:52,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 18:12:52,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 18:12:52,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56450220] [2024-11-10 18:12:52,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 18:12:52,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 18:12:52,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:12:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 18:12:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 18:12:52,745 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:12:52,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 385 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:12:52,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:12:52,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:12:52,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 18:12:58,945 INFO L124 PetriNetUnfolderBase]: 71678/89523 cut-off events. [2024-11-10 18:12:58,945 INFO L125 PetriNetUnfolderBase]: For 154175/159889 co-relation queries the response was YES. [2024-11-10 18:12:59,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275948 conditions, 89523 events. 71678/89523 cut-off events. For 154175/159889 co-relation queries the response was YES. Maximal size of possible extension queue 4234. Compared 507922 event pairs, 3948 based on Foata normal form. 1722/87864 useless extension candidates. Maximal degree in co-relation 275931. Up to 33783 conditions per place. [2024-11-10 18:13:00,025 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 121 selfloop transitions, 8 changer transitions 0/151 dead transitions. [2024-11-10 18:13:00,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 151 transitions, 982 flow [2024-11-10 18:13:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 18:13:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 18:13:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-11-10 18:13:00,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6696969696969697 [2024-11-10 18:13:00,027 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 385 flow. Second operand 5 states and 221 transitions. [2024-11-10 18:13:00,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 151 transitions, 982 flow [2024-11-10 18:13:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 151 transitions, 971 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 18:13:00,289 INFO L231 Difference]: Finished difference. Result has 86 places, 75 transitions, 388 flow [2024-11-10 18:13:00,289 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=86, PETRI_TRANSITIONS=75} [2024-11-10 18:13:00,290 INFO L277 CegarLoopForPetriNet]: 66 programPoint places, 20 predicate places. [2024-11-10 18:13:00,290 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 75 transitions, 388 flow [2024-11-10 18:13:00,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:13:00,290 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 18:13:00,290 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 18:13:00,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 18:13:00,290 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 5 more)] === [2024-11-10 18:13:00,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 18:13:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1913335796, now seen corresponding path program 1 times [2024-11-10 18:13:00,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 18:13:00,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982117888] [2024-11-10 18:13:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:13:00,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 18:13:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:13:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:13:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 18:13:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982117888] [2024-11-10 18:13:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982117888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 18:13:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697024832] [2024-11-10 18:13:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 18:13:00,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 18:13:00,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 18:13:00,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 18:13:00,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 18:13:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 18:13:00,476 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-10 18:13:00,477 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 18:13:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:13:00,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 18:13:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 18:13:00,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697024832] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 18:13:00,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 18:13:00,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-10 18:13:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640961467] [2024-11-10 18:13:00,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 18:13:00,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 18:13:00,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 18:13:00,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 18:13:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-10 18:13:00,790 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 66 [2024-11-10 18:13:00,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 75 transitions, 388 flow. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 18:13:00,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 18:13:00,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 66 [2024-11-10 18:13:00,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand