./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/weaver/bench-exp2x4.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 f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:41:08,758 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:41:08,827 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:41:08,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:41:08,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:41:08,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:41:08,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:41:08,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:41:08,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:41:08,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:41:08,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:41:08,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:41:08,873 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:41:08,874 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:41:08,874 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:41:08,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:41:08,877 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:41:08,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:41:08,878 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:41:08,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:41:08,878 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:41:08,879 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:41:08,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:41:08,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:41:08,880 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:41:08,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:41:08,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:41:08,880 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:41:08,880 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:41:08,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:41:08,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:41:08,881 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:41:08,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:41:08,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:41:08,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:41:08,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:41:08,883 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:41:08,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:41:08,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:41:08,884 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:41:08,884 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:41:08,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:41:08,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 [2024-11-22 21:41:09,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:41:09,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:41:09,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:41:09,198 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:41:09,198 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:41:09,199 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-11-22 21:41:10,614 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:41:10,793 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:41:10,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/bench-exp2x4.wvr.c [2024-11-22 21:41:10,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b922da4/8ed8bc45e7a641aab39c821b7f5ec39d/FLAG3eb9fa505 [2024-11-22 21:41:10,827 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82b922da4/8ed8bc45e7a641aab39c821b7f5ec39d [2024-11-22 21:41:10,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:41:10,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:41:10,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:41:10,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:41:10,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:41:10,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:41:10" (1/1) ... [2024-11-22 21:41:10,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e8c5a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:10, skipping insertion in model container [2024-11-22 21:41:10,843 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:41:10" (1/1) ... [2024-11-22 21:41:10,867 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:41:11,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:41:11,080 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:41:11,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:41:11,115 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:41:11,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11 WrapperNode [2024-11-22 21:41:11,116 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:41:11,117 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:41:11,117 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:41:11,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:41:11,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,157 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-22 21:41:11,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:41:11,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:41:11,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:41:11,159 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:41:11,170 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,175 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,190 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 21:41:11,191 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:41:11,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:41:11,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:41:11,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:41:11,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (1/1) ... [2024-11-22 21:41:11,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:41:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:11,257 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:41:11,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:41:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:41:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:41:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:41:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:41:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:41:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:41:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:41:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-22 21:41:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-22 21:41:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:41:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:41:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:41:11,313 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:41:11,387 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:41:11,388 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:41:11,612 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:41:11,613 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:41:11,758 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:41:11,758 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 21:41:11,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:41:11 BoogieIcfgContainer [2024-11-22 21:41:11,759 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:41:11,761 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:41:11,761 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:41:11,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:41:11,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:41:10" (1/3) ... [2024-11-22 21:41:11,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8debe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:41:11, skipping insertion in model container [2024-11-22 21:41:11,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:41:11" (2/3) ... [2024-11-22 21:41:11,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8debe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:41:11, skipping insertion in model container [2024-11-22 21:41:11,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:41:11" (3/3) ... [2024-11-22 21:41:11,770 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2024-11-22 21:41:11,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:41:11,782 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-22 21:41:11,782 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:41:11,830 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-22 21:41:11,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 96 flow [2024-11-22 21:41:11,885 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-22 21:41:11,885 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:41:11,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 30 events. 4/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 18 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-11-22 21:41:11,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 34 transitions, 96 flow [2024-11-22 21:41:11,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 29 transitions, 82 flow [2024-11-22 21:41:11,908 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:41:11,916 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;@2b1cf1c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:41:11,916 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-22 21:41:11,933 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:41:11,933 INFO L124 PetriNetUnfolderBase]: 4/26 cut-off events. [2024-11-22 21:41:11,933 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-22 21:41:11,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:11,934 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:11,935 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:11,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:11,941 INFO L85 PathProgramCache]: Analyzing trace with hash -155691460, now seen corresponding path program 1 times [2024-11-22 21:41:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:11,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179543411] [2024-11-22 21:41:11,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:11,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:12,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:12,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179543411] [2024-11-22 21:41:12,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179543411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:12,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:41:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61243702] [2024-11-22 21:41:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:12,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:41:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:41:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:41:12,525 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:12,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:12,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:12,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:12,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:12,813 INFO L124 PetriNetUnfolderBase]: 1367/1732 cut-off events. [2024-11-22 21:41:12,813 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-11-22 21:41:12,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 1732 events. 1367/1732 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5541 event pairs, 123 based on Foata normal form. 2/1002 useless extension candidates. Maximal degree in co-relation 3091. Up to 1541 conditions per place. [2024-11-22 21:41:12,835 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 35 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2024-11-22 21:41:12,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 219 flow [2024-11-22 21:41:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:41:12,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:41:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-22 21:41:12,848 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-22 21:41:12,850 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 73 transitions. [2024-11-22 21:41:12,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 219 flow [2024-11-22 21:41:12,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-22 21:41:12,861 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 95 flow [2024-11-22 21:41:12,864 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2024-11-22 21:41:12,868 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2024-11-22 21:41:12,869 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 95 flow [2024-11-22 21:41:12,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:12,870 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:12,870 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:12,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:41:12,871 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:12,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1450891758, now seen corresponding path program 1 times [2024-11-22 21:41:12,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:12,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068037836] [2024-11-22 21:41:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:12,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:13,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:13,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068037836] [2024-11-22 21:41:13,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068037836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:13,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:13,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302191294] [2024-11-22 21:41:13,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:13,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:13,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:13,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:13,034 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:13,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:13,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:13,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:13,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:13,327 INFO L124 PetriNetUnfolderBase]: 1587/2032 cut-off events. [2024-11-22 21:41:13,330 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2024-11-22 21:41:13,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 2032 events. 1587/2032 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7016 event pairs, 112 based on Foata normal form. 34/2064 useless extension candidates. Maximal degree in co-relation 1261. Up to 839 conditions per place. [2024-11-22 21:41:13,343 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 66 selfloop transitions, 10 changer transitions 0/81 dead transitions. [2024-11-22 21:41:13,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 81 transitions, 391 flow [2024-11-22 21:41:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:13,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-22 21:41:13,347 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2024-11-22 21:41:13,348 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 95 flow. Second operand 5 states and 120 transitions. [2024-11-22 21:41:13,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 81 transitions, 391 flow [2024-11-22 21:41:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:13,350 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 155 flow [2024-11-22 21:41:13,352 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2024-11-22 21:41:13,354 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2024-11-22 21:41:13,354 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 155 flow [2024-11-22 21:41:13,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:13,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:13,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:13,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:41:13,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:13,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:13,355 INFO L85 PathProgramCache]: Analyzing trace with hash -58212751, now seen corresponding path program 1 times [2024-11-22 21:41:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334512330] [2024-11-22 21:41:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:13,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:13,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:13,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334512330] [2024-11-22 21:41:13,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334512330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:13,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:13,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:13,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892008342] [2024-11-22 21:41:13,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:13,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:13,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:13,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:13,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:13,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:13,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:13,751 INFO L124 PetriNetUnfolderBase]: 1541/1986 cut-off events. [2024-11-22 21:41:13,752 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-11-22 21:41:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6004 conditions, 1986 events. 1541/1986 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6946 event pairs, 94 based on Foata normal form. 46/2030 useless extension candidates. Maximal degree in co-relation 2813. Up to 810 conditions per place. [2024-11-22 21:41:13,765 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 65 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2024-11-22 21:41:13,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 78 transitions, 412 flow [2024-11-22 21:41:13,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:13,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-11-22 21:41:13,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-11-22 21:41:13,770 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 155 flow. Second operand 5 states and 118 transitions. [2024-11-22 21:41:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 78 transitions, 412 flow [2024-11-22 21:41:13,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 78 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:41:13,776 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 169 flow [2024-11-22 21:41:13,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2024-11-22 21:41:13,777 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2024-11-22 21:41:13,778 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 169 flow [2024-11-22 21:41:13,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:13,778 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:13,778 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:13,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:41:13,779 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:13,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash 131235292, now seen corresponding path program 1 times [2024-11-22 21:41:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910346902] [2024-11-22 21:41:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:13,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910346902] [2024-11-22 21:41:13,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910346902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:13,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630799769] [2024-11-22 21:41:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:13,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:13,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:13,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:13,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:41:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:13,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:41:13,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:14,153 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630799769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:41:14,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:41:14,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-22 21:41:14,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254252299] [2024-11-22 21:41:14,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:41:14,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:41:14,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:41:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:41:14,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:14,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 169 flow. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:14,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:14,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:14,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:14,535 INFO L124 PetriNetUnfolderBase]: 1869/2497 cut-off events. [2024-11-22 21:41:14,535 INFO L125 PetriNetUnfolderBase]: For 4481/4481 co-relation queries the response was YES. [2024-11-22 21:41:14,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8305 conditions, 2497 events. 1869/2497 cut-off events. For 4481/4481 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10091 event pairs, 284 based on Foata normal form. 64/2557 useless extension candidates. Maximal degree in co-relation 4039. Up to 1031 conditions per place. [2024-11-22 21:41:14,553 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-22 21:41:14,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 92 transitions, 622 flow [2024-11-22 21:41:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:14,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-11-22 21:41:14,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6647058823529411 [2024-11-22 21:41:14,555 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 169 flow. Second operand 5 states and 113 transitions. [2024-11-22 21:41:14,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 92 transitions, 622 flow [2024-11-22 21:41:14,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 92 transitions, 605 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:14,591 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 217 flow [2024-11-22 21:41:14,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-22 21:41:14,592 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 9 predicate places. [2024-11-22 21:41:14,592 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 217 flow [2024-11-22 21:41:14,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:14,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:14,593 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:14,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 21:41:14,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:14,800 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:14,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:14,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1229232657, now seen corresponding path program 1 times [2024-11-22 21:41:14,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:14,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404999729] [2024-11-22 21:41:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:14,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:14,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:14,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:14,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:14,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404999729] [2024-11-22 21:41:14,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404999729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:14,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:14,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:14,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582739461] [2024-11-22 21:41:14,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:14,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:14,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:14,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:14,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:14,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:14,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:14,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:14,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:14,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:15,202 INFO L124 PetriNetUnfolderBase]: 1836/2452 cut-off events. [2024-11-22 21:41:15,203 INFO L125 PetriNetUnfolderBase]: For 5141/5141 co-relation queries the response was YES. [2024-11-22 21:41:15,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9565 conditions, 2452 events. 1836/2452 cut-off events. For 5141/5141 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9547 event pairs, 70 based on Foata normal form. 33/2481 useless extension candidates. Maximal degree in co-relation 4857. Up to 1016 conditions per place. [2024-11-22 21:41:15,219 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-22 21:41:15,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 687 flow [2024-11-22 21:41:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-22 21:41:15,221 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-11-22 21:41:15,221 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 217 flow. Second operand 5 states and 111 transitions. [2024-11-22 21:41:15,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 687 flow [2024-11-22 21:41:15,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 96 transitions, 687 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:41:15,229 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 280 flow [2024-11-22 21:41:15,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2024-11-22 21:41:15,230 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2024-11-22 21:41:15,230 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 280 flow [2024-11-22 21:41:15,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:15,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:15,231 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, 1, 1, 1] [2024-11-22 21:41:15,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:41:15,231 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:15,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:15,232 INFO L85 PathProgramCache]: Analyzing trace with hash -817991374, now seen corresponding path program 2 times [2024-11-22 21:41:15,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:15,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274299480] [2024-11-22 21:41:15,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:15,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:15,247 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:15,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:15,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:15,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:15,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274299480] [2024-11-22 21:41:15,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274299480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:15,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:15,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:15,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430336019] [2024-11-22 21:41:15,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:15,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:15,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:15,311 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:15,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:15,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:15,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:15,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:15,586 INFO L124 PetriNetUnfolderBase]: 1653/2199 cut-off events. [2024-11-22 21:41:15,586 INFO L125 PetriNetUnfolderBase]: For 5407/5407 co-relation queries the response was YES. [2024-11-22 21:41:15,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9176 conditions, 2199 events. 1653/2199 cut-off events. For 5407/5407 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 8268 event pairs, 90 based on Foata normal form. 31/2226 useless extension candidates. Maximal degree in co-relation 5202. Up to 877 conditions per place. [2024-11-22 21:41:15,606 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 76 selfloop transitions, 9 changer transitions 4/94 dead transitions. [2024-11-22 21:41:15,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 94 transitions, 696 flow [2024-11-22 21:41:15,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-22 21:41:15,608 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6529411764705882 [2024-11-22 21:41:15,608 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 280 flow. Second operand 5 states and 111 transitions. [2024-11-22 21:41:15,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 94 transitions, 696 flow [2024-11-22 21:41:15,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 683 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:15,619 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 280 flow [2024-11-22 21:41:15,620 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-11-22 21:41:15,620 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2024-11-22 21:41:15,621 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 280 flow [2024-11-22 21:41:15,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:15,621 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:15,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:15,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:41:15,622 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:15,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:15,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1848087545, now seen corresponding path program 2 times [2024-11-22 21:41:15,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:15,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585454325] [2024-11-22 21:41:15,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:15,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:15,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:15,637 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:15,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585454325] [2024-11-22 21:41:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585454325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:15,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727663499] [2024-11-22 21:41:15,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:15,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:15,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:15,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:15,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:41:15,787 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:15,787 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:15,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 21:41:15,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:41:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:15,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:41:16,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:16,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727663499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:41:16,082 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:41:16,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-22 21:41:16,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479867132] [2024-11-22 21:41:16,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:41:16,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:41:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:41:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:41:16,084 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:16,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 280 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:16,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:16,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:16,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:16,370 INFO L124 PetriNetUnfolderBase]: 1591/2149 cut-off events. [2024-11-22 21:41:16,370 INFO L125 PetriNetUnfolderBase]: For 5641/5641 co-relation queries the response was YES. [2024-11-22 21:41:16,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9229 conditions, 2149 events. 1591/2149 cut-off events. For 5641/5641 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 8554 event pairs, 257 based on Foata normal form. 62/2207 useless extension candidates. Maximal degree in co-relation 5857. Up to 1162 conditions per place. [2024-11-22 21:41:16,385 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 79 selfloop transitions, 8 changer transitions 0/92 dead transitions. [2024-11-22 21:41:16,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 708 flow [2024-11-22 21:41:16,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:16,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:16,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-11-22 21:41:16,387 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6352941176470588 [2024-11-22 21:41:16,387 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 280 flow. Second operand 5 states and 108 transitions. [2024-11-22 21:41:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 708 flow [2024-11-22 21:41:16,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 699 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:16,392 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 321 flow [2024-11-22 21:41:16,392 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=321, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-11-22 21:41:16,393 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 23 predicate places. [2024-11-22 21:41:16,393 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 321 flow [2024-11-22 21:41:16,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:16,393 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:16,393 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:16,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:41:16,597 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,SelfDestructingSolverStorable6 [2024-11-22 21:41:16,598 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:16,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:16,599 INFO L85 PathProgramCache]: Analyzing trace with hash -448556108, now seen corresponding path program 2 times [2024-11-22 21:41:16,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791892141] [2024-11-22 21:41:16,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:16,612 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:16,612 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:16,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:16,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791892141] [2024-11-22 21:41:16,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791892141] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:16,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:16,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:16,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21190923] [2024-11-22 21:41:16,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:16,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:16,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:16,663 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:16,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 321 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:16,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:16,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:16,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:16,900 INFO L124 PetriNetUnfolderBase]: 1515/2055 cut-off events. [2024-11-22 21:41:16,901 INFO L125 PetriNetUnfolderBase]: For 6311/6327 co-relation queries the response was YES. [2024-11-22 21:41:16,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9348 conditions, 2055 events. 1515/2055 cut-off events. For 6311/6327 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8457 event pairs, 349 based on Foata normal form. 84/2137 useless extension candidates. Maximal degree in co-relation 8219. Up to 1174 conditions per place. [2024-11-22 21:41:16,917 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-22 21:41:16,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 1050 flow [2024-11-22 21:41:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-22 21:41:16,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7 [2024-11-22 21:41:16,919 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 321 flow. Second operand 5 states and 119 transitions. [2024-11-22 21:41:16,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 1050 flow [2024-11-22 21:41:16,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 992 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-11-22 21:41:16,927 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 351 flow [2024-11-22 21:41:16,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-11-22 21:41:16,928 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 27 predicate places. [2024-11-22 21:41:16,928 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 351 flow [2024-11-22 21:41:16,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:16,928 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:16,928 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:16,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:41:16,929 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:16,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:16,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1762802453, now seen corresponding path program 2 times [2024-11-22 21:41:16,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:16,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575618242] [2024-11-22 21:41:16,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:41:16,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:16,940 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:41:16,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:41:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:17,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:17,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575618242] [2024-11-22 21:41:17,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575618242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:41:17,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:41:17,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:41:17,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195557828] [2024-11-22 21:41:17,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:41:17,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:41:17,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:41:17,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:41:17,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:41:17,008 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:41:17,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:17,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:41:17,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:41:17,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:41:17,252 INFO L124 PetriNetUnfolderBase]: 1447/1987 cut-off events. [2024-11-22 21:41:17,253 INFO L125 PetriNetUnfolderBase]: For 6552/6568 co-relation queries the response was YES. [2024-11-22 21:41:17,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9531 conditions, 1987 events. 1447/1987 cut-off events. For 6552/6568 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8163 event pairs, 375 based on Foata normal form. 72/2057 useless extension candidates. Maximal degree in co-relation 8462. Up to 1150 conditions per place. [2024-11-22 21:41:17,269 INFO L140 encePairwiseOnDemand]: 29/34 looper letters, 111 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2024-11-22 21:41:17,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 124 transitions, 1043 flow [2024-11-22 21:41:17,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:41:17,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:41:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-11-22 21:41:17,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-11-22 21:41:17,270 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 351 flow. Second operand 5 states and 116 transitions. [2024-11-22 21:41:17,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 124 transitions, 1043 flow [2024-11-22 21:41:17,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 124 transitions, 1034 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-22 21:41:17,280 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 399 flow [2024-11-22 21:41:17,280 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2024-11-22 21:41:17,281 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, 32 predicate places. [2024-11-22 21:41:17,281 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 399 flow [2024-11-22 21:41:17,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:41:17,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:41:17,281 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:41:17,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:41:17,282 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-22 21:41:17,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:41:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 347724471, now seen corresponding path program 1 times [2024-11-22 21:41:17,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:41:17,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393300653] [2024-11-22 21:41:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:17,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:41:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:41:17,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:41:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393300653] [2024-11-22 21:41:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393300653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:41:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227145890] [2024-11-22 21:41:17,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:41:17,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:41:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:41:17,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:41:17,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:41:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:41:17,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 21:41:17,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:42:12,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:42:12,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:42:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:42:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227145890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:42:18,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:42:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-22 21:42:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184481150] [2024-11-22 21:42:18,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:42:18,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:42:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:42:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:42:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=136, Unknown=2, NotChecked=0, Total=182 [2024-11-22 21:42:18,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2024-11-22 21:42:18,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 399 flow. Second operand has 14 states, 14 states have (on average 14.0) internal successors, (196), 14 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:42:18,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:42:18,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2024-11-22 21:42:18,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:42:31,252 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 58 DAG size of output: 52 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-22 21:42:36,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:42:37,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-22 21:42:41,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.87s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []