./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/mult-flipped-dist.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a046e57d 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/mult-flipped-dist.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 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 12:38:18,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 12:38:18,763 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-13 12:38:18,770 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 12:38:18,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 12:38:18,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 12:38:18,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 12:38:18,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 12:38:18,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 12:38:18,803 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 12:38:18,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 12:38:18,804 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 12:38:18,805 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 12:38:18,805 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 12:38:18,805 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 12:38:18,806 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 12:38:18,806 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 12:38:18,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 12:38:18,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 12:38:18,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 12:38:18,810 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-13 12:38:18,811 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-13 12:38:18,811 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-13 12:38:18,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 12:38:18,813 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-13 12:38:18,813 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 12:38:18,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 12:38:18,817 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 12:38:18,817 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 12:38:18,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 12:38:18,818 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 12:38:18,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 12:38:18,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 12:38:18,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:18,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 12:38:18,819 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 12:38:18,820 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 12:38:18,820 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 12:38:18,820 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 12:38:18,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 12:38:18,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 12:38:18,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 12:38:18,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7cfd33ca5f647adf12592c5e71401ab9da35a49d8f2ec6d0757ea2cc237974cc [2024-10-13 12:38:19,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 12:38:19,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 12:38:19,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 12:38:19,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 12:38:19,157 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 12:38:19,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-13 12:38:20,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 12:38:20,851 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 12:38:20,852 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/mult-flipped-dist.wvr.c [2024-10-13 12:38:20,860 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2792f965/cbaa2392d34b49e9b95fa6d40da0140d/FLAG5b32140ce [2024-10-13 12:38:20,881 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2792f965/cbaa2392d34b49e9b95fa6d40da0140d [2024-10-13 12:38:20,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 12:38:20,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 12:38:20,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:20,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 12:38:20,894 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 12:38:20,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:20" (1/1) ... [2024-10-13 12:38:20,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@158acbad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:20, skipping insertion in model container [2024-10-13 12:38:20,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:38:20" (1/1) ... [2024-10-13 12:38:20,920 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 12:38:21,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:21,145 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 12:38:21,165 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 12:38:21,181 INFO L204 MainTranslator]: Completed translation [2024-10-13 12:38:21,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21 WrapperNode [2024-10-13 12:38:21,182 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 12:38:21,183 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:21,183 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 12:38:21,183 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 12:38:21,190 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,215 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-10-13 12:38:21,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 12:38:21,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 12:38:21,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 12:38:21,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 12:38:21,227 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,229 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,242 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]. [2024-10-13 12:38:21,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,247 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,251 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,253 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,254 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,260 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 12:38:21,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 12:38:21,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 12:38:21,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 12:38:21,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (1/1) ... [2024-10-13 12:38:21,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 12:38:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:21,297 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) [2024-10-13 12:38:21,299 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 [2024-10-13 12:38:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 12:38:21,338 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 12:38:21,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 12:38:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 12:38:21,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 12:38:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 12:38:21,339 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 12:38:21,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 12:38:21,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 12:38:21,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 12:38:21,342 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 12:38:21,439 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 12:38:21,442 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 12:38:21,643 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 12:38:21,643 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 12:38:21,786 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 12:38:21,787 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 12:38:21,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:21 BoogieIcfgContainer [2024-10-13 12:38:21,787 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 12:38:21,789 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 12:38:21,789 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 12:38:21,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 12:38:21,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:38:20" (1/3) ... [2024-10-13 12:38:21,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:21, skipping insertion in model container [2024-10-13 12:38:21,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:38:21" (2/3) ... [2024-10-13 12:38:21,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e3abe69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:38:21, skipping insertion in model container [2024-10-13 12:38:21,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:38:21" (3/3) ... [2024-10-13 12:38:21,796 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2024-10-13 12:38:21,808 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 12:38:21,809 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-13 12:38:21,809 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 12:38:21,855 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 12:38:21,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-10-13 12:38:21,922 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-10-13 12:38:21,926 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:38:21,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-10-13 12:38:21,930 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-10-13 12:38:21,934 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-10-13 12:38:21,943 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 12:38:21,953 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;@19c85027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 12:38:21,953 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 12:38:21,962 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 12:38:21,963 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-13 12:38:21,963 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 12:38:21,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:21,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:21,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:21,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1751895252, now seen corresponding path program 1 times [2024-10-13 12:38:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043428206] [2024-10-13 12:38:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:22,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:22,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043428206] [2024-10-13 12:38:22,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043428206] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:22,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:22,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 12:38:22,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115226608] [2024-10-13 12:38:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:22,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 12:38:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 12:38:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 12:38:22,734 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:22,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 12:38:22,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:22,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:22,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:22,934 INFO L124 PetriNetUnfolderBase]: 386/565 cut-off events. [2024-10-13 12:38:22,936 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-13 12:38:22,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1206 conditions, 565 events. 386/565 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1775 event pairs, 124 based on Foata normal form. 2/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-10-13 12:38:22,946 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 32 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2024-10-13 12:38:22,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 183 flow [2024-10-13 12:38:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 12:38:22,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 12:38:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-10-13 12:38:22,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-13 12:38:22,962 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 64 flow. Second operand 3 states and 54 transitions. [2024-10-13 12:38:22,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 183 flow [2024-10-13 12:38:22,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-13 12:38:22,971 INFO L231 Difference]: Finished difference. Result has 25 places, 24 transitions, 74 flow [2024-10-13 12:38:22,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=25, PETRI_TRANSITIONS=24} [2024-10-13 12:38:22,979 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, -5 predicate places. [2024-10-13 12:38:22,980 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 24 transitions, 74 flow [2024-10-13 12:38:22,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-13 12:38:22,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:22,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:22,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 12:38:22,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:22,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash 476691239, now seen corresponding path program 1 times [2024-10-13 12:38:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:22,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097696457] [2024-10-13 12:38:22,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097696457] [2024-10-13 12:38:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097696457] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257463358] [2024-10-13 12:38:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:23,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:23,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:23,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:23,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:23,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:23,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 24 transitions, 74 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:23,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:23,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:23,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:23,383 INFO L124 PetriNetUnfolderBase]: 520/743 cut-off events. [2024-10-13 12:38:23,383 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-10-13 12:38:23,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 743 events. 520/743 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2444 event pairs, 203 based on Foata normal form. 16/759 useless extension candidates. Maximal degree in co-relation 529. Up to 536 conditions per place. [2024-10-13 12:38:23,391 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 45 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2024-10-13 12:38:23,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 58 transitions, 287 flow [2024-10-13 12:38:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:23,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-10-13 12:38:23,395 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.562962962962963 [2024-10-13 12:38:23,395 INFO L175 Difference]: Start difference. First operand has 25 places, 24 transitions, 74 flow. Second operand 5 states and 76 transitions. [2024-10-13 12:38:23,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 58 transitions, 287 flow [2024-10-13 12:38:23,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 58 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:23,397 INFO L231 Difference]: Finished difference. Result has 31 places, 34 transitions, 156 flow [2024-10-13 12:38:23,399 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=31, PETRI_TRANSITIONS=34} [2024-10-13 12:38:23,400 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-10-13 12:38:23,400 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 34 transitions, 156 flow [2024-10-13 12:38:23,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:23,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:23,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:23,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 12:38:23,401 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:23,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2146806399, now seen corresponding path program 2 times [2024-10-13 12:38:23,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:23,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746990063] [2024-10-13 12:38:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:23,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:23,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746990063] [2024-10-13 12:38:23,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746990063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:23,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217076182] [2024-10-13 12:38:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:23,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:23,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:23,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:23,564 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:23,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 34 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:23,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:23,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:23,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:23,768 INFO L124 PetriNetUnfolderBase]: 602/856 cut-off events. [2024-10-13 12:38:23,769 INFO L125 PetriNetUnfolderBase]: For 831/831 co-relation queries the response was YES. [2024-10-13 12:38:23,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2763 conditions, 856 events. 602/856 cut-off events. For 831/831 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2914 event pairs, 136 based on Foata normal form. 31/887 useless extension candidates. Maximal degree in co-relation 1993. Up to 488 conditions per place. [2024-10-13 12:38:23,776 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 57 selfloop transitions, 9 changer transitions 1/68 dead transitions. [2024-10-13 12:38:23,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 68 transitions, 428 flow [2024-10-13 12:38:23,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:38:23,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:38:23,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 69 transitions. [2024-10-13 12:38:23,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6388888888888888 [2024-10-13 12:38:23,780 INFO L175 Difference]: Start difference. First operand has 31 places, 34 transitions, 156 flow. Second operand 4 states and 69 transitions. [2024-10-13 12:38:23,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 68 transitions, 428 flow [2024-10-13 12:38:23,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 68 transitions, 410 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-13 12:38:23,785 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 209 flow [2024-10-13 12:38:23,785 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-10-13 12:38:23,785 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-10-13 12:38:23,786 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 209 flow [2024-10-13 12:38:23,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:23,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:23,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:23,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 12:38:23,787 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:23,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:23,788 INFO L85 PathProgramCache]: Analyzing trace with hash 64190845, now seen corresponding path program 3 times [2024-10-13 12:38:23,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:23,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31721254] [2024-10-13 12:38:23,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:23,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:23,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31721254] [2024-10-13 12:38:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31721254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:23,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:23,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:23,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752624279] [2024-10-13 12:38:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:23,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:23,919 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:23,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:23,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:24,134 INFO L124 PetriNetUnfolderBase]: 710/1003 cut-off events. [2024-10-13 12:38:24,135 INFO L125 PetriNetUnfolderBase]: For 1787/1787 co-relation queries the response was YES. [2024-10-13 12:38:24,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3551 conditions, 1003 events. 710/1003 cut-off events. For 1787/1787 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3465 event pairs, 200 based on Foata normal form. 16/1019 useless extension candidates. Maximal degree in co-relation 2466. Up to 670 conditions per place. [2024-10-13 12:38:24,143 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 49 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-10-13 12:38:24,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 500 flow [2024-10-13 12:38:24,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:24,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2024-10-13 12:38:24,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-13 12:38:24,146 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 209 flow. Second operand 5 states and 75 transitions. [2024-10-13 12:38:24,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 500 flow [2024-10-13 12:38:24,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 487 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:24,158 INFO L231 Difference]: Finished difference. Result has 42 places, 49 transitions, 361 flow [2024-10-13 12:38:24,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=361, PETRI_PLACES=42, PETRI_TRANSITIONS=49} [2024-10-13 12:38:24,160 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 12 predicate places. [2024-10-13 12:38:24,160 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 49 transitions, 361 flow [2024-10-13 12:38:24,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:24,161 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:24,161 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:24,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 12:38:24,162 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:24,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,163 INFO L85 PathProgramCache]: Analyzing trace with hash 941478933, now seen corresponding path program 4 times [2024-10-13 12:38:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170780912] [2024-10-13 12:38:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:24,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170780912] [2024-10-13 12:38:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170780912] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:24,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:24,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:24,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188986316] [2024-10-13 12:38:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:24,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:24,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:24,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:24,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:24,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:24,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 49 transitions, 361 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:24,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:24,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:24,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:24,530 INFO L124 PetriNetUnfolderBase]: 716/1042 cut-off events. [2024-10-13 12:38:24,531 INFO L125 PetriNetUnfolderBase]: For 3044/3044 co-relation queries the response was YES. [2024-10-13 12:38:24,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 1042 events. 716/1042 cut-off events. For 3044/3044 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3898 event pairs, 170 based on Foata normal form. 38/1080 useless extension candidates. Maximal degree in co-relation 3043. Up to 509 conditions per place. [2024-10-13 12:38:24,543 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 54 selfloop transitions, 18 changer transitions 3/76 dead transitions. [2024-10-13 12:38:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 606 flow [2024-10-13 12:38:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:24,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:24,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-10-13 12:38:24,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-10-13 12:38:24,545 INFO L175 Difference]: Start difference. First operand has 42 places, 49 transitions, 361 flow. Second operand 5 states and 78 transitions. [2024-10-13 12:38:24,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 606 flow [2024-10-13 12:38:24,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 582 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-13 12:38:24,557 INFO L231 Difference]: Finished difference. Result has 48 places, 51 transitions, 412 flow [2024-10-13 12:38:24,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=48, PETRI_TRANSITIONS=51} [2024-10-13 12:38:24,559 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2024-10-13 12:38:24,560 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 51 transitions, 412 flow [2024-10-13 12:38:24,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:24,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:24,562 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:24,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 12:38:24,563 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:24,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1244413700, now seen corresponding path program 1 times [2024-10-13 12:38:24,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:24,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636959131] [2024-10-13 12:38:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:24,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:24,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636959131] [2024-10-13 12:38:24,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636959131] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:24,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:24,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818948918] [2024-10-13 12:38:24,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:24,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:24,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:24,716 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 51 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:24,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:24,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:24,947 INFO L124 PetriNetUnfolderBase]: 750/1150 cut-off events. [2024-10-13 12:38:24,947 INFO L125 PetriNetUnfolderBase]: For 4954/4954 co-relation queries the response was YES. [2024-10-13 12:38:24,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 1150 events. 750/1150 cut-off events. For 4954/4954 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4788 event pairs, 229 based on Foata normal form. 79/1229 useless extension candidates. Maximal degree in co-relation 3412. Up to 586 conditions per place. [2024-10-13 12:38:24,958 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 57 selfloop transitions, 15 changer transitions 11/84 dead transitions. [2024-10-13 12:38:24,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 725 flow [2024-10-13 12:38:24,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-10-13 12:38:24,961 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-10-13 12:38:24,962 INFO L175 Difference]: Start difference. First operand has 48 places, 51 transitions, 412 flow. Second operand 5 states and 82 transitions. [2024-10-13 12:38:24,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 725 flow [2024-10-13 12:38:24,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 676 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:24,972 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 435 flow [2024-10-13 12:38:24,973 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=435, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2024-10-13 12:38:24,973 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 21 predicate places. [2024-10-13 12:38:24,974 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 435 flow [2024-10-13 12:38:24,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:24,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:24,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:24,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 12:38:24,975 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:24,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1604808738, now seen corresponding path program 2 times [2024-10-13 12:38:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:24,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628644963] [2024-10-13 12:38:24,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:24,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:25,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:25,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628644963] [2024-10-13 12:38:25,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628644963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:25,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:25,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:25,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480944944] [2024-10-13 12:38:25,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:25,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:25,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:25,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:25,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:25,079 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:25,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:25,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:25,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:25,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:25,278 INFO L124 PetriNetUnfolderBase]: 809/1239 cut-off events. [2024-10-13 12:38:25,279 INFO L125 PetriNetUnfolderBase]: For 6276/6276 co-relation queries the response was YES. [2024-10-13 12:38:25,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5744 conditions, 1239 events. 809/1239 cut-off events. For 6276/6276 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5116 event pairs, 200 based on Foata normal form. 47/1286 useless extension candidates. Maximal degree in co-relation 3273. Up to 820 conditions per place. [2024-10-13 12:38:25,289 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 63 selfloop transitions, 9 changer transitions 15/88 dead transitions. [2024-10-13 12:38:25,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 898 flow [2024-10-13 12:38:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:38:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:38:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-13 12:38:25,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-13 12:38:25,291 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 435 flow. Second operand 4 states and 68 transitions. [2024-10-13 12:38:25,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 898 flow [2024-10-13 12:38:25,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 88 transitions, 857 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:25,302 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 462 flow [2024-10-13 12:38:25,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=462, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-10-13 12:38:25,303 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-10-13 12:38:25,303 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 462 flow [2024-10-13 12:38:25,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:25,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:25,303 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:25,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 12:38:25,304 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:25,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:25,304 INFO L85 PathProgramCache]: Analyzing trace with hash -600399359, now seen corresponding path program 5 times [2024-10-13 12:38:25,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:25,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599312189] [2024-10-13 12:38:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:25,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:25,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599312189] [2024-10-13 12:38:25,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599312189] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:25,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:25,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:25,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156246301] [2024-10-13 12:38:25,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:25,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:25,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:25,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:25,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:25,397 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:25,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 462 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:25,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:25,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:25,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:25,610 INFO L124 PetriNetUnfolderBase]: 897/1363 cut-off events. [2024-10-13 12:38:25,611 INFO L125 PetriNetUnfolderBase]: For 7819/7819 co-relation queries the response was YES. [2024-10-13 12:38:25,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6730 conditions, 1363 events. 897/1363 cut-off events. For 7819/7819 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5784 event pairs, 345 based on Foata normal form. 16/1379 useless extension candidates. Maximal degree in co-relation 3929. Up to 1004 conditions per place. [2024-10-13 12:38:25,622 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 56 selfloop transitions, 27 changer transitions 15/99 dead transitions. [2024-10-13 12:38:25,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 99 transitions, 1079 flow [2024-10-13 12:38:25,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-10-13 12:38:25,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-10-13 12:38:25,625 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 462 flow. Second operand 5 states and 72 transitions. [2024-10-13 12:38:25,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 99 transitions, 1079 flow [2024-10-13 12:38:25,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 99 transitions, 1059 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:25,637 INFO L231 Difference]: Finished difference. Result has 59 places, 65 transitions, 692 flow [2024-10-13 12:38:25,637 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=692, PETRI_PLACES=59, PETRI_TRANSITIONS=65} [2024-10-13 12:38:25,638 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-10-13 12:38:25,638 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 65 transitions, 692 flow [2024-10-13 12:38:25,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:25,639 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:25,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:25,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 12:38:25,639 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:25,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:25,640 INFO L85 PathProgramCache]: Analyzing trace with hash -941363678, now seen corresponding path program 3 times [2024-10-13 12:38:25,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:25,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742956619] [2024-10-13 12:38:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742956619] [2024-10-13 12:38:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742956619] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:25,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:25,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:25,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989045887] [2024-10-13 12:38:25,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:25,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:25,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:25,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:25,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 65 transitions, 692 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:25,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:25,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:25,948 INFO L124 PetriNetUnfolderBase]: 947/1449 cut-off events. [2024-10-13 12:38:25,948 INFO L125 PetriNetUnfolderBase]: For 10176/10176 co-relation queries the response was YES. [2024-10-13 12:38:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8074 conditions, 1449 events. 947/1449 cut-off events. For 10176/10176 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6265 event pairs, 260 based on Foata normal form. 48/1497 useless extension candidates. Maximal degree in co-relation 6521. Up to 995 conditions per place. [2024-10-13 12:38:25,963 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 70 selfloop transitions, 17 changer transitions 18/106 dead transitions. [2024-10-13 12:38:25,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 106 transitions, 1280 flow [2024-10-13 12:38:25,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:38:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:38:25,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-10-13 12:38:25,965 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-10-13 12:38:25,965 INFO L175 Difference]: Start difference. First operand has 59 places, 65 transitions, 692 flow. Second operand 4 states and 68 transitions. [2024-10-13 12:38:25,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 106 transitions, 1280 flow [2024-10-13 12:38:25,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 106 transitions, 1233 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:25,982 INFO L231 Difference]: Finished difference. Result has 63 places, 69 transitions, 782 flow [2024-10-13 12:38:25,984 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=63, PETRI_TRANSITIONS=69} [2024-10-13 12:38:25,985 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-10-13 12:38:25,985 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 69 transitions, 782 flow [2024-10-13 12:38:25,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:25,985 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:25,986 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:25,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 12:38:25,986 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:25,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:25,987 INFO L85 PathProgramCache]: Analyzing trace with hash 813483325, now seen corresponding path program 6 times [2024-10-13 12:38:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:25,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998861368] [2024-10-13 12:38:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:25,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:26,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998861368] [2024-10-13 12:38:26,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998861368] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:26,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:26,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083858714] [2024-10-13 12:38:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:26,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:26,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 69 transitions, 782 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:26,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:26,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:26,339 INFO L124 PetriNetUnfolderBase]: 1093/1648 cut-off events. [2024-10-13 12:38:26,340 INFO L125 PetriNetUnfolderBase]: For 12951/12951 co-relation queries the response was YES. [2024-10-13 12:38:26,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9320 conditions, 1648 events. 1093/1648 cut-off events. For 12951/12951 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7114 event pairs, 355 based on Foata normal form. 22/1670 useless extension candidates. Maximal degree in co-relation 7478. Up to 1202 conditions per place. [2024-10-13 12:38:26,356 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 82 selfloop transitions, 26 changer transitions 15/124 dead transitions. [2024-10-13 12:38:26,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 124 transitions, 1668 flow [2024-10-13 12:38:26,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:26,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:26,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-10-13 12:38:26,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-10-13 12:38:26,357 INFO L175 Difference]: Start difference. First operand has 63 places, 69 transitions, 782 flow. Second operand 5 states and 70 transitions. [2024-10-13 12:38:26,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 124 transitions, 1668 flow [2024-10-13 12:38:26,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 1632 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:26,377 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 1137 flow [2024-10-13 12:38:26,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1137, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2024-10-13 12:38:26,378 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2024-10-13 12:38:26,378 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 1137 flow [2024-10-13 12:38:26,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:26,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:26,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:26,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 12:38:26,379 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:26,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:26,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1838687522, now seen corresponding path program 4 times [2024-10-13 12:38:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259200609] [2024-10-13 12:38:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:26,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:26,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259200609] [2024-10-13 12:38:26,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259200609] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:26,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:26,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 12:38:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246248153] [2024-10-13 12:38:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-13 12:38:26,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-13 12:38:26,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-13 12:38:26,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:26,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 1137 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:26,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:26,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:26,747 INFO L124 PetriNetUnfolderBase]: 1095/1722 cut-off events. [2024-10-13 12:38:26,747 INFO L125 PetriNetUnfolderBase]: For 16310/16310 co-relation queries the response was YES. [2024-10-13 12:38:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10486 conditions, 1722 events. 1095/1722 cut-off events. For 16310/16310 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8063 event pairs, 360 based on Foata normal form. 58/1780 useless extension candidates. Maximal degree in co-relation 8101. Up to 1039 conditions per place. [2024-10-13 12:38:26,768 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 92 selfloop transitions, 16 changer transitions 23/132 dead transitions. [2024-10-13 12:38:26,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 132 transitions, 1881 flow [2024-10-13 12:38:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-13 12:38:26,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-13 12:38:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-10-13 12:38:26,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-10-13 12:38:26,770 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 1137 flow. Second operand 5 states and 74 transitions. [2024-10-13 12:38:26,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 132 transitions, 1881 flow [2024-10-13 12:38:26,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 132 transitions, 1829 flow, removed 26 selfloop flow, removed 0 redundant places. [2024-10-13 12:38:26,801 INFO L231 Difference]: Finished difference. Result has 74 places, 85 transitions, 1164 flow [2024-10-13 12:38:26,801 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1164, PETRI_PLACES=74, PETRI_TRANSITIONS=85} [2024-10-13 12:38:26,803 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2024-10-13 12:38:26,803 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 85 transitions, 1164 flow [2024-10-13 12:38:26,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2024-10-13 12:38:26,803 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:26,804 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:26,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 12:38:26,804 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:26,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:26,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1535429971, now seen corresponding path program 1 times [2024-10-13 12:38:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549596320] [2024-10-13 12:38:26,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:26,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:26,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:26,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:26,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549596320] [2024-10-13 12:38:26,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549596320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:26,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:26,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:26,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985535366] [2024-10-13 12:38:26,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:26,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:26,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:26,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:26,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:26,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:26,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 85 transitions, 1164 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:26,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:26,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:27,144 INFO L124 PetriNetUnfolderBase]: 1084/1662 cut-off events. [2024-10-13 12:38:27,145 INFO L125 PetriNetUnfolderBase]: For 18189/18189 co-relation queries the response was YES. [2024-10-13 12:38:27,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10680 conditions, 1662 events. 1084/1662 cut-off events. For 18189/18189 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7398 event pairs, 399 based on Foata normal form. 60/1722 useless extension candidates. Maximal degree in co-relation 8238. Up to 1077 conditions per place. [2024-10-13 12:38:27,158 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 57 selfloop transitions, 43 changer transitions 17/118 dead transitions. [2024-10-13 12:38:27,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 118 transitions, 1737 flow [2024-10-13 12:38:27,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:38:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:38:27,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-13 12:38:27,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-13 12:38:27,160 INFO L175 Difference]: Start difference. First operand has 74 places, 85 transitions, 1164 flow. Second operand 4 states and 64 transitions. [2024-10-13 12:38:27,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 118 transitions, 1737 flow [2024-10-13 12:38:27,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 1670 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:27,189 INFO L231 Difference]: Finished difference. Result has 75 places, 85 transitions, 1254 flow [2024-10-13 12:38:27,189 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1117, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1254, PETRI_PLACES=75, PETRI_TRANSITIONS=85} [2024-10-13 12:38:27,190 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-10-13 12:38:27,190 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 85 transitions, 1254 flow [2024-10-13 12:38:27,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:27,191 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:27,191 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 12:38:27,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 12:38:27,191 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:27,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1494238209, now seen corresponding path program 7 times [2024-10-13 12:38:27,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:27,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065389948] [2024-10-13 12:38:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:27,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:27,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065389948] [2024-10-13 12:38:27,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065389948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 12:38:27,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 12:38:27,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 12:38:27,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677422112] [2024-10-13 12:38:27,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 12:38:27,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 12:38:27,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:27,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 12:38:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-13 12:38:27,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:27,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 85 transitions, 1254 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:27,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:27,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:27,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:27,514 INFO L124 PetriNetUnfolderBase]: 1016/1485 cut-off events. [2024-10-13 12:38:27,515 INFO L125 PetriNetUnfolderBase]: For 17518/17518 co-relation queries the response was YES. [2024-10-13 12:38:27,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10166 conditions, 1485 events. 1016/1485 cut-off events. For 17518/17518 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5936 event pairs, 296 based on Foata normal form. 38/1523 useless extension candidates. Maximal degree in co-relation 7855. Up to 983 conditions per place. [2024-10-13 12:38:27,529 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 82 selfloop transitions, 37 changer transitions 3/123 dead transitions. [2024-10-13 12:38:27,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 1931 flow [2024-10-13 12:38:27,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 12:38:27,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-13 12:38:27,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-10-13 12:38:27,531 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-10-13 12:38:27,531 INFO L175 Difference]: Start difference. First operand has 75 places, 85 transitions, 1254 flow. Second operand 4 states and 64 transitions. [2024-10-13 12:38:27,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 1931 flow [2024-10-13 12:38:27,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 123 transitions, 1702 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-10-13 12:38:27,559 INFO L231 Difference]: Finished difference. Result has 69 places, 98 transitions, 1392 flow [2024-10-13 12:38:27,560 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1392, PETRI_PLACES=69, PETRI_TRANSITIONS=98} [2024-10-13 12:38:27,561 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-10-13 12:38:27,561 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 98 transitions, 1392 flow [2024-10-13 12:38:27,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2024-10-13 12:38:27,561 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:27,562 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] [2024-10-13 12:38:27,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-13 12:38:27,562 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:27,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:27,563 INFO L85 PathProgramCache]: Analyzing trace with hash -225746625, now seen corresponding path program 1 times [2024-10-13 12:38:27,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:27,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258492266] [2024-10-13 12:38:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:27,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:27,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258492266] [2024-10-13 12:38:27,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258492266] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:27,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520487858] [2024-10-13 12:38:27,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:27,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:27,674 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) [2024-10-13 12:38:27,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 12:38:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:27,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 12:38:27,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:27,810 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:27,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:27,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520487858] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:27,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:27,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-13 12:38:27,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40204056] [2024-10-13 12:38:27,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:27,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 12:38:27,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:27,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 12:38:27,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-13 12:38:27,879 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:27,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 98 transitions, 1392 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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) [2024-10-13 12:38:27,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:27,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:27,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:28,302 INFO L124 PetriNetUnfolderBase]: 1129/1616 cut-off events. [2024-10-13 12:38:28,302 INFO L125 PetriNetUnfolderBase]: For 15808/15808 co-relation queries the response was YES. [2024-10-13 12:38:28,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10834 conditions, 1616 events. 1129/1616 cut-off events. For 15808/15808 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6350 event pairs, 185 based on Foata normal form. 40/1656 useless extension candidates. Maximal degree in co-relation 8588. Up to 855 conditions per place. [2024-10-13 12:38:28,316 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 80 selfloop transitions, 95 changer transitions 2/178 dead transitions. [2024-10-13 12:38:28,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 178 transitions, 2676 flow [2024-10-13 12:38:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 12:38:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-13 12:38:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-10-13 12:38:28,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-10-13 12:38:28,318 INFO L175 Difference]: Start difference. First operand has 69 places, 98 transitions, 1392 flow. Second operand 10 states and 134 transitions. [2024-10-13 12:38:28,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 178 transitions, 2676 flow [2024-10-13 12:38:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 178 transitions, 2566 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:28,338 INFO L231 Difference]: Finished difference. Result has 78 places, 137 transitions, 2257 flow [2024-10-13 12:38:28,338 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2257, PETRI_PLACES=78, PETRI_TRANSITIONS=137} [2024-10-13 12:38:28,339 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-10-13 12:38:28,340 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 137 transitions, 2257 flow [2024-10-13 12:38:28,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 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) [2024-10-13 12:38:28,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:28,340 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] [2024-10-13 12:38:28,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 12:38:28,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-13 12:38:28,542 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:28,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1418388632, now seen corresponding path program 1 times [2024-10-13 12:38:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514850436] [2024-10-13 12:38:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514850436] [2024-10-13 12:38:28,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514850436] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:28,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169456329] [2024-10-13 12:38:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:28,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:28,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:28,779 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) [2024-10-13 12:38:28,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 12:38:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:28,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:28,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:28,975 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169456329] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:29,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-13 12:38:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902646239] [2024-10-13 12:38:29,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:29,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:29,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:29,633 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:29,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 137 transitions, 2257 flow. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 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) [2024-10-13 12:38:29,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:29,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:29,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:30,165 INFO L124 PetriNetUnfolderBase]: 1599/2297 cut-off events. [2024-10-13 12:38:30,165 INFO L125 PetriNetUnfolderBase]: For 24531/24531 co-relation queries the response was YES. [2024-10-13 12:38:30,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15796 conditions, 2297 events. 1599/2297 cut-off events. For 24531/24531 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 9362 event pairs, 178 based on Foata normal form. 2/2299 useless extension candidates. Maximal degree in co-relation 14418. Up to 1693 conditions per place. [2024-10-13 12:38:30,186 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 158 selfloop transitions, 67 changer transitions 2/228 dead transitions. [2024-10-13 12:38:30,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 3539 flow [2024-10-13 12:38:30,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:30,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-10-13 12:38:30,187 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.588477366255144 [2024-10-13 12:38:30,187 INFO L175 Difference]: Start difference. First operand has 78 places, 137 transitions, 2257 flow. Second operand 9 states and 143 transitions. [2024-10-13 12:38:30,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 3539 flow [2024-10-13 12:38:30,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 228 transitions, 3076 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-10-13 12:38:30,229 INFO L231 Difference]: Finished difference. Result has 83 places, 174 transitions, 2637 flow [2024-10-13 12:38:30,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2637, PETRI_PLACES=83, PETRI_TRANSITIONS=174} [2024-10-13 12:38:30,230 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-10-13 12:38:30,231 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 174 transitions, 2637 flow [2024-10-13 12:38:30,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 12 states have internal predecessors, (116), 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) [2024-10-13 12:38:30,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:30,231 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] [2024-10-13 12:38:30,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 12:38:30,432 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,SelfDestructingSolverStorable14 [2024-10-13 12:38:30,432 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:30,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1276024520, now seen corresponding path program 2 times [2024-10-13 12:38:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14896167] [2024-10-13 12:38:30,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:30,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:30,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:30,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14896167] [2024-10-13 12:38:30,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14896167] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:30,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547210129] [2024-10-13 12:38:30,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:30,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:30,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:30,645 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) [2024-10-13 12:38:30,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 12:38:30,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:30,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:30,723 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:30,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:30,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:31,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547210129] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:31,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:31,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-13 12:38:31,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621457355] [2024-10-13 12:38:31,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:31,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:31,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:31,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:31,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 174 transitions, 2637 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-10-13 12:38:31,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:31,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:31,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:32,004 INFO L124 PetriNetUnfolderBase]: 1895/2729 cut-off events. [2024-10-13 12:38:32,004 INFO L125 PetriNetUnfolderBase]: For 25254/25254 co-relation queries the response was YES. [2024-10-13 12:38:32,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 2729 events. 1895/2729 cut-off events. For 25254/25254 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 11420 event pairs, 297 based on Foata normal form. 2/2731 useless extension candidates. Maximal degree in co-relation 17078. Up to 2155 conditions per place. [2024-10-13 12:38:32,025 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 174 selfloop transitions, 67 changer transitions 2/244 dead transitions. [2024-10-13 12:38:32,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 244 transitions, 3667 flow [2024-10-13 12:38:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-13 12:38:32,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-13 12:38:32,027 INFO L175 Difference]: Start difference. First operand has 83 places, 174 transitions, 2637 flow. Second operand 9 states and 140 transitions. [2024-10-13 12:38:32,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 244 transitions, 3667 flow [2024-10-13 12:38:32,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 244 transitions, 3419 flow, removed 109 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:32,066 INFO L231 Difference]: Finished difference. Result has 93 places, 193 transitions, 2881 flow [2024-10-13 12:38:32,066 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2881, PETRI_PLACES=93, PETRI_TRANSITIONS=193} [2024-10-13 12:38:32,067 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-10-13 12:38:32,067 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 193 transitions, 2881 flow [2024-10-13 12:38:32,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 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) [2024-10-13 12:38:32,067 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:32,067 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] [2024-10-13 12:38:32,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:32,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:32,268 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:32,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:32,269 INFO L85 PathProgramCache]: Analyzing trace with hash 59592076, now seen corresponding path program 3 times [2024-10-13 12:38:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:32,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10106010] [2024-10-13 12:38:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10106010] [2024-10-13 12:38:32,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10106010] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:32,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790107381] [2024-10-13 12:38:32,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:32,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:32,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:32,441 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) [2024-10-13 12:38:32,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 12:38:32,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:38:32,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:32,516 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:32,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:32,619 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:33,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790107381] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:33,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:33,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-13 12:38:33,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189153506] [2024-10-13 12:38:33,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:33,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:33,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:33,177 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:33,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 193 transitions, 2881 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2024-10-13 12:38:33,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:33,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:33,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:33,822 INFO L124 PetriNetUnfolderBase]: 2345/3383 cut-off events. [2024-10-13 12:38:33,822 INFO L125 PetriNetUnfolderBase]: For 31568/31568 co-relation queries the response was YES. [2024-10-13 12:38:33,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21309 conditions, 3383 events. 2345/3383 cut-off events. For 31568/31568 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14783 event pairs, 447 based on Foata normal form. 2/3385 useless extension candidates. Maximal degree in co-relation 20919. Up to 2806 conditions per place. [2024-10-13 12:38:33,850 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 212 selfloop transitions, 70 changer transitions 2/285 dead transitions. [2024-10-13 12:38:33,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 285 transitions, 4304 flow [2024-10-13 12:38:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-10-13 12:38:33,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5761316872427984 [2024-10-13 12:38:33,852 INFO L175 Difference]: Start difference. First operand has 93 places, 193 transitions, 2881 flow. Second operand 9 states and 140 transitions. [2024-10-13 12:38:33,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 285 transitions, 4304 flow [2024-10-13 12:38:33,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 285 transitions, 4041 flow, removed 102 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:33,908 INFO L231 Difference]: Finished difference. Result has 103 places, 233 transitions, 3482 flow [2024-10-13 12:38:33,909 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3482, PETRI_PLACES=103, PETRI_TRANSITIONS=233} [2024-10-13 12:38:33,909 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-10-13 12:38:33,909 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 233 transitions, 3482 flow [2024-10-13 12:38:33,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2024-10-13 12:38:33,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:33,910 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] [2024-10-13 12:38:33,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:34,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-10-13 12:38:34,115 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:34,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1636981364, now seen corresponding path program 4 times [2024-10-13 12:38:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014832715] [2024-10-13 12:38:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014832715] [2024-10-13 12:38:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014832715] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809515969] [2024-10-13 12:38:34,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:34,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:34,302 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:34,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 12:38:34,367 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:34,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:34,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:34,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:34,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:34,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809515969] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:34,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:34,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2024-10-13 12:38:34,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67576798] [2024-10-13 12:38:34,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:34,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 12:38:34,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:34,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 12:38:34,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-10-13 12:38:34,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:34,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 233 transitions, 3482 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-10-13 12:38:34,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:34,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:34,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:35,595 INFO L124 PetriNetUnfolderBase]: 2625/3791 cut-off events. [2024-10-13 12:38:35,595 INFO L125 PetriNetUnfolderBase]: For 35884/35884 co-relation queries the response was YES. [2024-10-13 12:38:35,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23903 conditions, 3791 events. 2625/3791 cut-off events. For 35884/35884 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16975 event pairs, 561 based on Foata normal form. 2/3793 useless extension candidates. Maximal degree in co-relation 23480. Up to 3264 conditions per place. [2024-10-13 12:38:35,631 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 227 selfloop transitions, 70 changer transitions 2/300 dead transitions. [2024-10-13 12:38:35,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 300 transitions, 4689 flow [2024-10-13 12:38:35,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:35,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-10-13 12:38:35,633 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5596707818930041 [2024-10-13 12:38:35,633 INFO L175 Difference]: Start difference. First operand has 103 places, 233 transitions, 3482 flow. Second operand 9 states and 136 transitions. [2024-10-13 12:38:35,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 300 transitions, 4689 flow [2024-10-13 12:38:35,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 300 transitions, 4341 flow, removed 159 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:35,710 INFO L231 Difference]: Finished difference. Result has 113 places, 252 transitions, 3684 flow [2024-10-13 12:38:35,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3134, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3684, PETRI_PLACES=113, PETRI_TRANSITIONS=252} [2024-10-13 12:38:35,711 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-10-13 12:38:35,711 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 252 transitions, 3684 flow [2024-10-13 12:38:35,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 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) [2024-10-13 12:38:35,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:35,711 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] [2024-10-13 12:38:35,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 12:38:35,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-10-13 12:38:35,912 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:35,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:35,913 INFO L85 PathProgramCache]: Analyzing trace with hash 320976776, now seen corresponding path program 5 times [2024-10-13 12:38:35,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:35,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159641177] [2024-10-13 12:38:35,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:35,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:36,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:36,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159641177] [2024-10-13 12:38:36,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159641177] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352123389] [2024-10-13 12:38:36,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:36,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:36,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:36,122 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:36,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 12:38:36,194 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:36,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:36,196 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:36,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:36,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:36,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:37,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352123389] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:37,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:37,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2024-10-13 12:38:37,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510371189] [2024-10-13 12:38:37,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:37,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:37,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:37,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:37,389 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:37,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 252 transitions, 3684 flow. Second operand has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 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) [2024-10-13 12:38:37,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:37,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:37,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:38,093 INFO L124 PetriNetUnfolderBase]: 3031/4377 cut-off events. [2024-10-13 12:38:38,093 INFO L125 PetriNetUnfolderBase]: For 41841/41841 co-relation queries the response was YES. [2024-10-13 12:38:38,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27264 conditions, 4377 events. 3031/4377 cut-off events. For 41841/41841 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 20147 event pairs, 692 based on Foata normal form. 2/4379 useless extension candidates. Maximal degree in co-relation 26797. Up to 3855 conditions per place. [2024-10-13 12:38:38,142 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 265 selfloop transitions, 69 changer transitions 2/337 dead transitions. [2024-10-13 12:38:38,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 337 transitions, 5325 flow [2024-10-13 12:38:38,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:38,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-10-13 12:38:38,145 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-10-13 12:38:38,146 INFO L175 Difference]: Start difference. First operand has 113 places, 252 transitions, 3684 flow. Second operand 9 states and 135 transitions. [2024-10-13 12:38:38,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 337 transitions, 5325 flow [2024-10-13 12:38:38,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 337 transitions, 5005 flow, removed 130 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:38,247 INFO L231 Difference]: Finished difference. Result has 123 places, 291 transitions, 4331 flow [2024-10-13 12:38:38,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3364, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4331, PETRI_PLACES=123, PETRI_TRANSITIONS=291} [2024-10-13 12:38:38,249 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-10-13 12:38:38,249 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 291 transitions, 4331 flow [2024-10-13 12:38:38,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.166666666666666) internal successors, (110), 12 states have internal predecessors, (110), 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) [2024-10-13 12:38:38,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:38,249 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] [2024-10-13 12:38:38,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 12:38:38,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:38,454 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:38,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1673613192, now seen corresponding path program 6 times [2024-10-13 12:38:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:38,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037621450] [2024-10-13 12:38:38,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:38,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:38,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037621450] [2024-10-13 12:38:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037621450] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675891062] [2024-10-13 12:38:38,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:38:38,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:38,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:38,635 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:38,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 12:38:38,701 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-10-13 12:38:38,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:38,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-10-13 12:38:38,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:38,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:39,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675891062] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:39,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:39,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 10 [2024-10-13 12:38:39,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786518476] [2024-10-13 12:38:39,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:39,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-13 12:38:39,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:39,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-13 12:38:39,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-13 12:38:39,870 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:39,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 291 transitions, 4331 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2024-10-13 12:38:39,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:39,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:39,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:40,629 INFO L124 PetriNetUnfolderBase]: 3311/4785 cut-off events. [2024-10-13 12:38:40,629 INFO L125 PetriNetUnfolderBase]: For 47342/47342 co-relation queries the response was YES. [2024-10-13 12:38:40,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29907 conditions, 4785 events. 3311/4785 cut-off events. For 47342/47342 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 22369 event pairs, 816 based on Foata normal form. 2/4787 useless extension candidates. Maximal degree in co-relation 29395. Up to 4281 conditions per place. [2024-10-13 12:38:40,688 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 283 selfloop transitions, 69 changer transitions 2/355 dead transitions. [2024-10-13 12:38:40,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 355 transitions, 5725 flow [2024-10-13 12:38:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 12:38:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 12:38:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-10-13 12:38:40,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.551440329218107 [2024-10-13 12:38:40,690 INFO L175 Difference]: Start difference. First operand has 123 places, 291 transitions, 4331 flow. Second operand 9 states and 134 transitions. [2024-10-13 12:38:40,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 355 transitions, 5725 flow [2024-10-13 12:38:40,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 355 transitions, 5325 flow, removed 185 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:40,805 INFO L231 Difference]: Finished difference. Result has 133 places, 310 transitions, 4551 flow [2024-10-13 12:38:40,805 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4551, PETRI_PLACES=133, PETRI_TRANSITIONS=310} [2024-10-13 12:38:40,806 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-10-13 12:38:40,806 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 310 transitions, 4551 flow [2024-10-13 12:38:40,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 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) [2024-10-13 12:38:40,806 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:40,806 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] [2024-10-13 12:38:40,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 12:38:41,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:41,008 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:41,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:41,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1211376155, now seen corresponding path program 7 times [2024-10-13 12:38:41,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:41,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892896585] [2024-10-13 12:38:41,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:41,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892896585] [2024-10-13 12:38:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892896585] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064386228] [2024-10-13 12:38:41,121 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:38:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:41,123 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:41,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 12:38:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:41,185 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:41,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:41,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:41,229 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:41,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:41,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064386228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:41,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:41,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2024-10-13 12:38:41,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850895526] [2024-10-13 12:38:41,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:41,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:41,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:41,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 310 transitions, 4551 flow. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 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) [2024-10-13 12:38:41,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:41,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:41,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:42,435 INFO L124 PetriNetUnfolderBase]: 4924/6992 cut-off events. [2024-10-13 12:38:42,435 INFO L125 PetriNetUnfolderBase]: For 73007/73007 co-relation queries the response was YES. [2024-10-13 12:38:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42653 conditions, 6992 events. 4924/6992 cut-off events. For 73007/73007 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33511 event pairs, 434 based on Foata normal form. 48/7040 useless extension candidates. Maximal degree in co-relation 41622. Up to 1831 conditions per place. [2024-10-13 12:38:42,493 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 536 selfloop transitions, 158 changer transitions 0/695 dead transitions. [2024-10-13 12:38:42,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 695 transitions, 10689 flow [2024-10-13 12:38:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-13 12:38:42,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-13 12:38:42,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 204 transitions. [2024-10-13 12:38:42,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5811965811965812 [2024-10-13 12:38:42,497 INFO L175 Difference]: Start difference. First operand has 133 places, 310 transitions, 4551 flow. Second operand 13 states and 204 transitions. [2024-10-13 12:38:42,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 695 transitions, 10689 flow [2024-10-13 12:38:42,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 695 transitions, 9698 flow, removed 465 selfloop flow, removed 2 redundant places. [2024-10-13 12:38:42,620 INFO L231 Difference]: Finished difference. Result has 151 places, 388 transitions, 5873 flow [2024-10-13 12:38:42,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4160, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5873, PETRI_PLACES=151, PETRI_TRANSITIONS=388} [2024-10-13 12:38:42,621 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-10-13 12:38:42,621 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 388 transitions, 5873 flow [2024-10-13 12:38:42,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 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) [2024-10-13 12:38:42,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:42,622 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] [2024-10-13 12:38:42,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 12:38:42,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-10-13 12:38:42,823 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:42,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1782818654, now seen corresponding path program 8 times [2024-10-13 12:38:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:42,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841861814] [2024-10-13 12:38:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:42,973 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:42,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841861814] [2024-10-13 12:38:42,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841861814] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:42,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280492046] [2024-10-13 12:38:42,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:38:42,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:42,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:42,977 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:42,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 12:38:43,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:38:43,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:43,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:43,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:43,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:43,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280492046] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:43,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:43,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-10-13 12:38:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124607710] [2024-10-13 12:38:43,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:43,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-10-13 12:38:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-10-13 12:38:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-10-13 12:38:43,206 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:43,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 388 transitions, 5873 flow. Second operand has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2024-10-13 12:38:43,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:43,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:46,114 INFO L124 PetriNetUnfolderBase]: 6606/9329 cut-off events. [2024-10-13 12:38:46,114 INFO L125 PetriNetUnfolderBase]: For 117218/117218 co-relation queries the response was YES. [2024-10-13 12:38:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64933 conditions, 9329 events. 6606/9329 cut-off events. For 117218/117218 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46186 event pairs, 330 based on Foata normal form. 154/9483 useless extension candidates. Maximal degree in co-relation 63171. Up to 2661 conditions per place. [2024-10-13 12:38:46,202 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 618 selfloop transitions, 531 changer transitions 0/1150 dead transitions. [2024-10-13 12:38:46,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1150 transitions, 17909 flow [2024-10-13 12:38:46,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-10-13 12:38:46,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-10-13 12:38:46,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 678 transitions. [2024-10-13 12:38:46,206 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45656565656565656 [2024-10-13 12:38:46,206 INFO L175 Difference]: Start difference. First operand has 151 places, 388 transitions, 5873 flow. Second operand 55 states and 678 transitions. [2024-10-13 12:38:46,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1150 transitions, 17909 flow [2024-10-13 12:38:46,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1150 transitions, 17109 flow, removed 328 selfloop flow, removed 1 redundant places. [2024-10-13 12:38:46,616 INFO L231 Difference]: Finished difference. Result has 228 places, 724 transitions, 12618 flow [2024-10-13 12:38:46,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=12618, PETRI_PLACES=228, PETRI_TRANSITIONS=724} [2024-10-13 12:38:46,616 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-10-13 12:38:46,616 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 724 transitions, 12618 flow [2024-10-13 12:38:46,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.6875) internal successors, (123), 16 states have internal predecessors, (123), 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) [2024-10-13 12:38:46,617 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:46,617 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] [2024-10-13 12:38:46,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 12:38:46,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,818 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:46,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash 900764061, now seen corresponding path program 9 times [2024-10-13 12:38:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581061401] [2024-10-13 12:38:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:46,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:46,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581061401] [2024-10-13 12:38:46,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581061401] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:46,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736176509] [2024-10-13 12:38:46,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:38:46,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:46,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:46,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:46,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-10-13 12:38:47,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-10-13 12:38:47,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:47,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:47,023 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:47,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:47,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736176509] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:47,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:47,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-13 12:38:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991303729] [2024-10-13 12:38:47,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:47,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:38:47,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:38:47,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:38:47,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:47,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 724 transitions, 12618 flow. Second operand has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 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) [2024-10-13 12:38:47,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:47,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:47,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:49,666 INFO L124 PetriNetUnfolderBase]: 6855/9752 cut-off events. [2024-10-13 12:38:49,666 INFO L125 PetriNetUnfolderBase]: For 213990/213990 co-relation queries the response was YES. [2024-10-13 12:38:49,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81022 conditions, 9752 events. 6855/9752 cut-off events. For 213990/213990 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 49517 event pairs, 1375 based on Foata normal form. 118/9870 useless extension candidates. Maximal degree in co-relation 80362. Up to 4782 conditions per place. [2024-10-13 12:38:49,767 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 536 selfloop transitions, 384 changer transitions 6/927 dead transitions. [2024-10-13 12:38:49,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 927 transitions, 17146 flow [2024-10-13 12:38:49,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-13 12:38:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-13 12:38:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 201 transitions. [2024-10-13 12:38:49,769 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-10-13 12:38:49,769 INFO L175 Difference]: Start difference. First operand has 228 places, 724 transitions, 12618 flow. Second operand 15 states and 201 transitions. [2024-10-13 12:38:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 927 transitions, 17146 flow [2024-10-13 12:38:51,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 927 transitions, 14035 flow, removed 1147 selfloop flow, removed 7 redundant places. [2024-10-13 12:38:51,053 INFO L231 Difference]: Finished difference. Result has 241 places, 789 transitions, 11671 flow [2024-10-13 12:38:51,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9623, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11671, PETRI_PLACES=241, PETRI_TRANSITIONS=789} [2024-10-13 12:38:51,054 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-10-13 12:38:51,054 INFO L471 AbstractCegarLoop]: Abstraction has has 241 places, 789 transitions, 11671 flow [2024-10-13 12:38:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.461538461538462) internal successors, (97), 13 states have internal predecessors, (97), 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) [2024-10-13 12:38:51,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:51,055 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] [2024-10-13 12:38:51,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-10-13 12:38:51,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-10-13 12:38:51,256 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:51,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:51,256 INFO L85 PathProgramCache]: Analyzing trace with hash -146329803, now seen corresponding path program 10 times [2024-10-13 12:38:51,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:51,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698285783] [2024-10-13 12:38:51,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:51,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:51,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698285783] [2024-10-13 12:38:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698285783] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477421130] [2024-10-13 12:38:51,410 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-13 12:38:51,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:51,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:51,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-10-13 12:38:51,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-13 12:38:51,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:51,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:51,480 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:51,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:51,539 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:38:51,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477421130] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:51,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:51,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-13 12:38:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746453425] [2024-10-13 12:38:51,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:51,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-13 12:38:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-13 12:38:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-10-13 12:38:51,703 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:51,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 789 transitions, 11671 flow. Second operand has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 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) [2024-10-13 12:38:51,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:51,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:51,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:54,092 INFO L124 PetriNetUnfolderBase]: 7168/10296 cut-off events. [2024-10-13 12:38:54,092 INFO L125 PetriNetUnfolderBase]: For 256132/256132 co-relation queries the response was YES. [2024-10-13 12:38:54,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81999 conditions, 10296 events. 7168/10296 cut-off events. For 256132/256132 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 53882 event pairs, 1671 based on Foata normal form. 157/10453 useless extension candidates. Maximal degree in co-relation 81247. Up to 5748 conditions per place. [2024-10-13 12:38:54,210 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 664 selfloop transitions, 292 changer transitions 39/996 dead transitions. [2024-10-13 12:38:54,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 996 transitions, 16730 flow [2024-10-13 12:38:54,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 12:38:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-13 12:38:54,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-10-13 12:38:54,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-10-13 12:38:54,212 INFO L175 Difference]: Start difference. First operand has 241 places, 789 transitions, 11671 flow. Second operand 8 states and 123 transitions. [2024-10-13 12:38:54,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 996 transitions, 16730 flow [2024-10-13 12:38:55,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 996 transitions, 16119 flow, removed 191 selfloop flow, removed 3 redundant places. [2024-10-13 12:38:55,841 INFO L231 Difference]: Finished difference. Result has 249 places, 847 transitions, 13061 flow [2024-10-13 12:38:55,842 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11283, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=789, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13061, PETRI_PLACES=249, PETRI_TRANSITIONS=847} [2024-10-13 12:38:55,843 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-10-13 12:38:55,843 INFO L471 AbstractCegarLoop]: Abstraction has has 249 places, 847 transitions, 13061 flow [2024-10-13 12:38:55,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 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) [2024-10-13 12:38:55,843 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:38:55,843 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] [2024-10-13 12:38:55,858 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-10-13 12:38:56,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-10-13 12:38:56,044 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:38:56,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:38:56,045 INFO L85 PathProgramCache]: Analyzing trace with hash 633348975, now seen corresponding path program 11 times [2024-10-13 12:38:56,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:38:56,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248864860] [2024-10-13 12:38:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:38:56,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:38:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:38:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:56,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:38:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248864860] [2024-10-13 12:38:56,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248864860] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:38:56,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452539648] [2024-10-13 12:38:56,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-13 12:38:56,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:38:56,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:38:56,196 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:38:56,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-10-13 12:38:56,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-10-13 12:38:56,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:38:56,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:38:56,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:38:56,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:56,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:38:56,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:38:56,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452539648] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:38:56,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:38:56,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-13 12:38:56,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392127741] [2024-10-13 12:38:56,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:38:56,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:38:56,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:38:56,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:38:56,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:38:56,407 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:38:56,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 847 transitions, 13061 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 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) [2024-10-13 12:38:56,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:38:56,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:38:56,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:38:59,657 INFO L124 PetriNetUnfolderBase]: 8246/11650 cut-off events. [2024-10-13 12:38:59,657 INFO L125 PetriNetUnfolderBase]: For 342770/342770 co-relation queries the response was YES. [2024-10-13 12:38:59,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101072 conditions, 11650 events. 8246/11650 cut-off events. For 342770/342770 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 60263 event pairs, 1428 based on Foata normal form. 100/11750 useless extension candidates. Maximal degree in co-relation 100475. Up to 6829 conditions per place. [2024-10-13 12:38:59,805 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 651 selfloop transitions, 682 changer transitions 0/1334 dead transitions. [2024-10-13 12:38:59,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 1334 transitions, 24295 flow [2024-10-13 12:38:59,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-10-13 12:38:59,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-10-13 12:38:59,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 405 transitions. [2024-10-13 12:38:59,808 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-10-13 12:38:59,808 INFO L175 Difference]: Start difference. First operand has 249 places, 847 transitions, 13061 flow. Second operand 32 states and 405 transitions. [2024-10-13 12:38:59,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 1334 transitions, 24295 flow [2024-10-13 12:39:02,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1334 transitions, 23520 flow, removed 284 selfloop flow, removed 1 redundant places. [2024-10-13 12:39:02,699 INFO L231 Difference]: Finished difference. Result has 289 places, 1133 transitions, 20695 flow [2024-10-13 12:39:02,700 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=12774, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=431, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=20695, PETRI_PLACES=289, PETRI_TRANSITIONS=1133} [2024-10-13 12:39:02,701 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-10-13 12:39:02,701 INFO L471 AbstractCegarLoop]: Abstraction has has 289 places, 1133 transitions, 20695 flow [2024-10-13 12:39:02,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 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) [2024-10-13 12:39:02,701 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:02,701 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] [2024-10-13 12:39:02,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:02,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-10-13 12:39:02,902 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:02,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -169513561, now seen corresponding path program 12 times [2024-10-13 12:39:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187430061] [2024-10-13 12:39:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:02,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:03,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187430061] [2024-10-13 12:39:03,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187430061] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:03,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443059770] [2024-10-13 12:39:03,049 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-13 12:39:03,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:03,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:03,051 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:03,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-10-13 12:39:03,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-10-13 12:39:03,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:03,114 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:03,116 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:03,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:03,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443059770] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:03,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:03,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2024-10-13 12:39:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065501398] [2024-10-13 12:39:03,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:03,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-13 12:39:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:03,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-13 12:39:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-10-13 12:39:03,239 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:39:03,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 1133 transitions, 20695 flow. Second operand has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 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) [2024-10-13 12:39:03,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:03,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:39:03,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:08,470 INFO L124 PetriNetUnfolderBase]: 9821/13795 cut-off events. [2024-10-13 12:39:08,471 INFO L125 PetriNetUnfolderBase]: For 523256/523256 co-relation queries the response was YES. [2024-10-13 12:39:08,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133081 conditions, 13795 events. 9821/13795 cut-off events. For 523256/523256 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 72523 event pairs, 1271 based on Foata normal form. 441/14236 useless extension candidates. Maximal degree in co-relation 132423. Up to 6234 conditions per place. [2024-10-13 12:39:08,657 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 712 selfloop transitions, 1262 changer transitions 4/1979 dead transitions. [2024-10-13 12:39:08,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 1979 transitions, 42550 flow [2024-10-13 12:39:08,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-10-13 12:39:08,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2024-10-13 12:39:08,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 852 transitions. [2024-10-13 12:39:08,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-10-13 12:39:08,662 INFO L175 Difference]: Start difference. First operand has 289 places, 1133 transitions, 20695 flow. Second operand 72 states and 852 transitions. [2024-10-13 12:39:08,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 1979 transitions, 42550 flow [2024-10-13 12:39:14,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1979 transitions, 34298 flow, removed 3796 selfloop flow, removed 3 redundant places. [2024-10-13 12:39:14,139 INFO L231 Difference]: Finished difference. Result has 384 places, 1686 transitions, 31255 flow [2024-10-13 12:39:14,140 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=17202, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=31255, PETRI_PLACES=384, PETRI_TRANSITIONS=1686} [2024-10-13 12:39:14,140 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 354 predicate places. [2024-10-13 12:39:14,140 INFO L471 AbstractCegarLoop]: Abstraction has has 384 places, 1686 transitions, 31255 flow [2024-10-13 12:39:14,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.823529411764706) internal successors, (133), 17 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) [2024-10-13 12:39:14,140 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:14,141 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] [2024-10-13 12:39:14,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-10-13 12:39:14,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-10-13 12:39:14,341 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:14,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash -719253340, now seen corresponding path program 13 times [2024-10-13 12:39:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:14,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809071304] [2024-10-13 12:39:14,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:14,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:14,466 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 12:39:14,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809071304] [2024-10-13 12:39:14,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809071304] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:14,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870544592] [2024-10-13 12:39:14,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-13 12:39:14,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:14,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:14,470 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:14,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-10-13 12:39:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:14,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:14,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:14,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:14,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:14,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870544592] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:14,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:14,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2024-10-13 12:39:14,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309503506] [2024-10-13 12:39:14,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:14,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-13 12:39:14,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-13 12:39:14,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-10-13 12:39:14,673 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:39:14,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 1686 transitions, 31255 flow. Second operand has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-10-13 12:39:14,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:14,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:39:14,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:21,104 INFO L124 PetriNetUnfolderBase]: 11069/15725 cut-off events. [2024-10-13 12:39:21,104 INFO L125 PetriNetUnfolderBase]: For 405116/405116 co-relation queries the response was YES. [2024-10-13 12:39:21,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144483 conditions, 15725 events. 11069/15725 cut-off events. For 405116/405116 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 87144 event pairs, 1290 based on Foata normal form. 443/16168 useless extension candidates. Maximal degree in co-relation 143785. Up to 5695 conditions per place. [2024-10-13 12:39:21,268 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1158 selfloop transitions, 916 changer transitions 325/2400 dead transitions. [2024-10-13 12:39:21,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 2400 transitions, 49033 flow [2024-10-13 12:39:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-13 12:39:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-13 12:39:21,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 418 transitions. [2024-10-13 12:39:21,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4553376906318083 [2024-10-13 12:39:21,270 INFO L175 Difference]: Start difference. First operand has 384 places, 1686 transitions, 31255 flow. Second operand 34 states and 418 transitions. [2024-10-13 12:39:21,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 2400 transitions, 49033 flow [2024-10-13 12:39:26,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2400 transitions, 41450 flow, removed 3033 selfloop flow, removed 13 redundant places. [2024-10-13 12:39:26,181 INFO L231 Difference]: Finished difference. Result has 429 places, 1810 transitions, 31132 flow [2024-10-13 12:39:26,182 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=24893, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=714, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=854, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=31132, PETRI_PLACES=429, PETRI_TRANSITIONS=1810} [2024-10-13 12:39:26,183 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-10-13 12:39:26,183 INFO L471 AbstractCegarLoop]: Abstraction has has 429 places, 1810 transitions, 31132 flow [2024-10-13 12:39:26,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.769230769230769) internal successors, (101), 13 states have internal predecessors, (101), 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) [2024-10-13 12:39:26,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:26,183 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] [2024-10-13 12:39:26,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-10-13 12:39:26,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:26,384 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:26,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:26,384 INFO L85 PathProgramCache]: Analyzing trace with hash -523467501, now seen corresponding path program 14 times [2024-10-13 12:39:26,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:26,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145764323] [2024-10-13 12:39:26,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:26,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:26,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145764323] [2024-10-13 12:39:26,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145764323] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:26,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079906518] [2024-10-13 12:39:26,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 12:39:26,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:26,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:26,541 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:26,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-10-13 12:39:26,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 12:39:26,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:26,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:26,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:26,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:26,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:26,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079906518] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:26,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:26,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2024-10-13 12:39:26,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973294293] [2024-10-13 12:39:26,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:26,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 12:39:26,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:26,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 12:39:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-10-13 12:39:26,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:39:26,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 1810 transitions, 31132 flow. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2024-10-13 12:39:26,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:26,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:39:26,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 12:39:34,024 INFO L124 PetriNetUnfolderBase]: 13527/18867 cut-off events. [2024-10-13 12:39:34,024 INFO L125 PetriNetUnfolderBase]: For 546337/546337 co-relation queries the response was YES. [2024-10-13 12:39:34,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184528 conditions, 18867 events. 13527/18867 cut-off events. For 546337/546337 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 103578 event pairs, 984 based on Foata normal form. 472/19339 useless extension candidates. Maximal degree in co-relation 184299. Up to 6528 conditions per place. [2024-10-13 12:39:34,588 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 1990 selfloop transitions, 1206 changer transitions 6/3203 dead transitions. [2024-10-13 12:39:34,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 3203 transitions, 64321 flow [2024-10-13 12:39:34,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-13 12:39:34,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-10-13 12:39:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 351 transitions. [2024-10-13 12:39:34,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-13 12:39:34,590 INFO L175 Difference]: Start difference. First operand has 429 places, 1810 transitions, 31132 flow. Second operand 24 states and 351 transitions. [2024-10-13 12:39:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 3203 transitions, 64321 flow [2024-10-13 12:39:41,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 3203 transitions, 61551 flow, removed 1279 selfloop flow, removed 11 redundant places. [2024-10-13 12:39:41,241 INFO L231 Difference]: Finished difference. Result has 443 places, 2347 transitions, 44812 flow [2024-10-13 12:39:41,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=30034, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=742, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=904, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=44812, PETRI_PLACES=443, PETRI_TRANSITIONS=2347} [2024-10-13 12:39:41,243 INFO L277 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-10-13 12:39:41,243 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 2347 transitions, 44812 flow [2024-10-13 12:39:41,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 states have internal predecessors, (114), 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) [2024-10-13 12:39:41,243 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 12:39:41,243 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] [2024-10-13 12:39:41,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-10-13 12:39:41,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-10-13 12:39:41,445 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 12:39:41,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 12:39:41,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1234135183, now seen corresponding path program 15 times [2024-10-13 12:39:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 12:39:41,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719218075] [2024-10-13 12:39:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 12:39:41,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 12:39:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 12:39:41,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:41,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 12:39:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719218075] [2024-10-13 12:39:41,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719218075] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 12:39:41,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117764430] [2024-10-13 12:39:41,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-13 12:39:41,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 12:39:41,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 12:39:41,542 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 12:39:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-10-13 12:39:41,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-10-13 12:39:41,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 12:39:41,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-13 12:39:41,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 12:39:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:41,665 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 12:39:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 12:39:41,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117764430] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 12:39:41,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 12:39:41,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2024-10-13 12:39:41,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222234746] [2024-10-13 12:39:41,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 12:39:41,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 12:39:41,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 12:39:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 12:39:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-10-13 12:39:41,742 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-10-13 12:39:41,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 2347 transitions, 44812 flow. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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) [2024-10-13 12:39:41,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 12:39:41,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-10-13 12:39:41,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand