./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-send-receive.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 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:41:13,802 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:41:13,869 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:41:13,874 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:41:13,875 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:41:13,892 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:41:13,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:41:13,892 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:41:13,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:41:13,893 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:41:13,893 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:41:13,893 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:41:13,894 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:41:13,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:41:13,894 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:41:13,895 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:41:13,895 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:41:13,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:41:13,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:41:13,896 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:41:13,896 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:41:13,899 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:41:13,900 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:41:13,900 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:41:13,900 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:41:13,900 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:41:13,900 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:41:13,901 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:41:13,901 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:41:13,901 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:41:13,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:41:13,901 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:41:13,902 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:41:13,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:41:13,902 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:41:13,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:41:13,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:41:13,903 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:41:13,903 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:41:13,903 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:41:13,903 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:41:13,903 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:41:13,904 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eda2bf92bccdcc8638b67653fb7fdefc015ff9c815b317ad1009deb61d04585 [2024-11-17 03:41:14,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:41:14,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:41:14,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:41:14,118 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:41:14,118 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:41:14,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-17 03:41:15,315 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:41:15,497 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:41:15,497 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-send-receive.wvr.c [2024-11-17 03:41:15,504 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0d7e3f4/304e9668ce904e928199943d3006d875/FLAGead47ffb1 [2024-11-17 03:41:15,904 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca0d7e3f4/304e9668ce904e928199943d3006d875 [2024-11-17 03:41:15,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:41:15,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:41:15,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:41:15,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:41:15,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:41:15,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:15" (1/1) ... [2024-11-17 03:41:15,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c837cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:15, skipping insertion in model container [2024-11-17 03:41:15,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:15" (1/1) ... [2024-11-17 03:41:15,937 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:41:16,098 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-17 03:41:16,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:41:16,107 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:41:16,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:41:16,138 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:41:16,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16 WrapperNode [2024-11-17 03:41:16,139 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:41:16,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:41:16,140 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:41:16,140 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:41:16,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,171 INFO L138 Inliner]: procedures = 24, calls = 38, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 147 [2024-11-17 03:41:16,173 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:41:16,174 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:41:16,174 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:41:16,174 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:41:16,182 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,185 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,196 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-17 03:41:16,196 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,200 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,205 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,205 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:41:16,209 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:41:16,210 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:41:16,210 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:41:16,210 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (1/1) ... [2024-11-17 03:41:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:41:16,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:16,242 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) [2024-11-17 03:41:16,244 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 [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-17 03:41:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-17 03:41:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-17 03:41:16,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:41:16,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:41:16,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:41:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:41:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:41:16,279 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:41:16,356 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:41:16,358 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:41:16,595 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:41:16,595 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:41:16,756 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:41:16,756 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:41:16,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:41:16 BoogieIcfgContainer [2024-11-17 03:41:16,757 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:41:16,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:41:16,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:41:16,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:41:16,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:41:15" (1/3) ... [2024-11-17 03:41:16,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc5f0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:16, skipping insertion in model container [2024-11-17 03:41:16,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:16" (2/3) ... [2024-11-17 03:41:16,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc5f0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:16, skipping insertion in model container [2024-11-17 03:41:16,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:41:16" (3/3) ... [2024-11-17 03:41:16,766 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive.wvr.c [2024-11-17 03:41:16,778 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:41:16,778 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-11-17 03:41:16,778 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:41:16,821 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-17 03:41:16,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 60 places, 57 transitions, 135 flow [2024-11-17 03:41:16,877 INFO L124 PetriNetUnfolderBase]: 7/54 cut-off events. [2024-11-17 03:41:16,877 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-17 03:41:16,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 7/54 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 120 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-17 03:41:16,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 60 places, 57 transitions, 135 flow [2024-11-17 03:41:16,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 53 transitions, 124 flow [2024-11-17 03:41:16,889 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:41:16,896 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;@a900384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:41:16,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2024-11-17 03:41:16,900 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:41:16,900 INFO L124 PetriNetUnfolderBase]: 2/7 cut-off events. [2024-11-17 03:41:16,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:41:16,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:16,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:41:16,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:16,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 12906997, now seen corresponding path program 1 times [2024-11-17 03:41:16,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194183395] [2024-11-17 03:41:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:17,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:17,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194183395] [2024-11-17 03:41:17,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194183395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:17,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:17,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:41:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818578309] [2024-11-17 03:41:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:17,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:41:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:17,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:41:17,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:41:17,238 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:17,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-17 03:41:17,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:17,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:17,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:17,506 INFO L124 PetriNetUnfolderBase]: 1137/1807 cut-off events. [2024-11-17 03:41:17,507 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-17 03:41:17,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 1807 events. 1137/1807 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 10975 event pairs, 952 based on Foata normal form. 135/1446 useless extension candidates. Maximal degree in co-relation 3412. Up to 1664 conditions per place. [2024-11-17 03:41:17,525 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 30 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-17 03:41:17,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 176 flow [2024-11-17 03:41:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:41:17,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:41:17,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-17 03:41:17,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5497076023391813 [2024-11-17 03:41:17,555 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 124 flow. Second operand 3 states and 94 transitions. [2024-11-17 03:41:17,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 176 flow [2024-11-17 03:41:17,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 164 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-17 03:41:17,568 INFO L231 Difference]: Finished difference. Result has 49 places, 47 transitions, 104 flow [2024-11-17 03:41:17,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=47} [2024-11-17 03:41:17,572 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2024-11-17 03:41:17,573 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 47 transitions, 104 flow [2024-11-17 03:41:17,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-17 03:41:17,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:17,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:41:17,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:41:17,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:17,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 12906998, now seen corresponding path program 1 times [2024-11-17 03:41:17,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:17,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081844425] [2024-11-17 03:41:17,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:17,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:17,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081844425] [2024-11-17 03:41:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081844425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:17,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:41:17,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79002608] [2024-11-17 03:41:17,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:17,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:17,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:17,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:17,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:17,853 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:17,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 47 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 03:41:17,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:17,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:17,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:18,065 INFO L124 PetriNetUnfolderBase]: 1138/1812 cut-off events. [2024-11-17 03:41:18,065 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-17 03:41:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3555 conditions, 1812 events. 1138/1812 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11105 event pairs, 952 based on Foata normal form. 0/1315 useless extension candidates. Maximal degree in co-relation 3529. Up to 1669 conditions per place. [2024-11-17 03:41:18,073 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 32 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2024-11-17 03:41:18,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 184 flow [2024-11-17 03:41:18,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:41:18,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:41:18,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-11-17 03:41:18,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-11-17 03:41:18,076 INFO L175 Difference]: Start difference. First operand has 49 places, 47 transitions, 104 flow. Second operand 4 states and 113 transitions. [2024-11-17 03:41:18,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 184 flow [2024-11-17 03:41:18,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:41:18,078 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 127 flow [2024-11-17 03:41:18,079 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-11-17 03:41:18,079 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-11-17 03:41:18,079 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 127 flow [2024-11-17 03:41:18,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2024-11-17 03:41:18,080 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:18,080 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-11-17 03:41:18,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:41:18,081 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:18,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2034284444, now seen corresponding path program 1 times [2024-11-17 03:41:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755055995] [2024-11-17 03:41:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:18,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:18,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755055995] [2024-11-17 03:41:18,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755055995] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:18,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268876338] [2024-11-17 03:41:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:18,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:18,385 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) [2024-11-17 03:41:18,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-17 03:41:18,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:18,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-17 03:41:18,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:18,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-17 03:41:18,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:18,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268876338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:18,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:18,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-17 03:41:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804437385] [2024-11-17 03:41:18,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:18,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:41:18,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:41:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:41:18,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-11-17 03:41:18,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 127 flow. Second operand has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 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) [2024-11-17 03:41:18,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:18,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-11-17 03:41:18,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:19,109 INFO L124 PetriNetUnfolderBase]: 1138/1811 cut-off events. [2024-11-17 03:41:19,109 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-11-17 03:41:19,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1811 events. 1138/1811 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11045 event pairs, 952 based on Foata normal form. 0/1315 useless extension candidates. Maximal degree in co-relation 3539. Up to 1665 conditions per place. [2024-11-17 03:41:19,118 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 7 changer transitions 0/50 dead transitions. [2024-11-17 03:41:19,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 199 flow [2024-11-17 03:41:19,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-17 03:41:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-17 03:41:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-17 03:41:19,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-11-17 03:41:19,120 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 127 flow. Second operand 6 states and 146 transitions. [2024-11-17 03:41:19,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 199 flow [2024-11-17 03:41:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:19,122 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 134 flow [2024-11-17 03:41:19,122 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-11-17 03:41:19,122 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-17 03:41:19,123 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 134 flow [2024-11-17 03:41:19,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 19.363636363636363) internal successors, (213), 11 states have internal predecessors, (213), 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) [2024-11-17 03:41:19,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:19,123 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:19,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-17 03:41:19,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:19,324 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:19,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:19,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2108357994, now seen corresponding path program 1 times [2024-11-17 03:41:19,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:19,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948066542] [2024-11-17 03:41:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:19,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948066542] [2024-11-17 03:41:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948066542] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:19,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:41:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887479889] [2024-11-17 03:41:19,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:19,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:41:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:41:19,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:41:19,368 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-11-17 03:41:19,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-17 03:41:19,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:19,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-11-17 03:41:19,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:19,516 INFO L124 PetriNetUnfolderBase]: 1377/2248 cut-off events. [2024-11-17 03:41:19,516 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2024-11-17 03:41:19,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2248 events. 1377/2248 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12708 event pairs, 580 based on Foata normal form. 72/1796 useless extension candidates. Maximal degree in co-relation 4366. Up to 1376 conditions per place. [2024-11-17 03:41:19,527 INFO L140 encePairwiseOnDemand]: 51/57 looper letters, 50 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2024-11-17 03:41:19,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 67 transitions, 280 flow [2024-11-17 03:41:19,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:41:19,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:41:19,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-17 03:41:19,528 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6608187134502924 [2024-11-17 03:41:19,529 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 134 flow. Second operand 3 states and 113 transitions. [2024-11-17 03:41:19,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 67 transitions, 280 flow [2024-11-17 03:41:19,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 257 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-17 03:41:19,530 INFO L231 Difference]: Finished difference. Result has 52 places, 51 transitions, 134 flow [2024-11-17 03:41:19,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=52, PETRI_TRANSITIONS=51} [2024-11-17 03:41:19,531 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-11-17 03:41:19,531 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 51 transitions, 134 flow [2024-11-17 03:41:19,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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) [2024-11-17 03:41:19,531 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:19,532 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:19,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:41:19,532 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:19,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1456763945, now seen corresponding path program 1 times [2024-11-17 03:41:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:19,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994790767] [2024-11-17 03:41:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:19,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994790767] [2024-11-17 03:41:19,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994790767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:19,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:19,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:41:19,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391635975] [2024-11-17 03:41:19,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:19,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:19,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:19,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:19,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:19,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:19,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 51 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-17 03:41:19,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:19,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:19,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:19,740 INFO L124 PetriNetUnfolderBase]: 957/1549 cut-off events. [2024-11-17 03:41:19,741 INFO L125 PetriNetUnfolderBase]: For 169/169 co-relation queries the response was YES. [2024-11-17 03:41:19,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1549 events. 957/1549 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8133 event pairs, 794 based on Foata normal form. 0/1349 useless extension candidates. Maximal degree in co-relation 1133. Up to 1418 conditions per place. [2024-11-17 03:41:19,750 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 31 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-17 03:41:19,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 194 flow [2024-11-17 03:41:19,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:41:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:41:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-17 03:41:19,753 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-11-17 03:41:19,753 INFO L175 Difference]: Start difference. First operand has 52 places, 51 transitions, 134 flow. Second operand 4 states and 108 transitions. [2024-11-17 03:41:19,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 194 flow [2024-11-17 03:41:19,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:19,755 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 129 flow [2024-11-17 03:41:19,757 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-11-17 03:41:19,757 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2024-11-17 03:41:19,757 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 129 flow [2024-11-17 03:41:19,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 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) [2024-11-17 03:41:19,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:19,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:19,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:41:19,758 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:19,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:19,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1456763946, now seen corresponding path program 1 times [2024-11-17 03:41:19,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:19,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551381790] [2024-11-17 03:41:19,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:19,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551381790] [2024-11-17 03:41:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551381790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:19,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:19,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:41:19,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260276279] [2024-11-17 03:41:19,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:19,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:19,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:19,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-17 03:41:19,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:19,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:19,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:19,985 INFO L124 PetriNetUnfolderBase]: 1128/1875 cut-off events. [2024-11-17 03:41:19,985 INFO L125 PetriNetUnfolderBase]: For 173/173 co-relation queries the response was YES. [2024-11-17 03:41:19,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 1875 events. 1128/1875 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10398 event pairs, 966 based on Foata normal form. 21/1702 useless extension candidates. Maximal degree in co-relation 3245. Up to 1422 conditions per place. [2024-11-17 03:41:19,993 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 48 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-17 03:41:19,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 65 transitions, 273 flow [2024-11-17 03:41:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:41:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:41:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-11-17 03:41:19,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.512280701754386 [2024-11-17 03:41:19,995 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 129 flow. Second operand 5 states and 146 transitions. [2024-11-17 03:41:19,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 65 transitions, 273 flow [2024-11-17 03:41:19,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 269 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:41:19,996 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 143 flow [2024-11-17 03:41:19,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=143, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2024-11-17 03:41:19,997 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-17 03:41:19,998 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 143 flow [2024-11-17 03:41:19,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 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) [2024-11-17 03:41:19,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:19,999 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:20,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:41:20,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:20,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1918273156, now seen corresponding path program 1 times [2024-11-17 03:41:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:20,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101093011] [2024-11-17 03:41:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:20,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101093011] [2024-11-17 03:41:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101093011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507258239] [2024-11-17 03:41:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:20,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:20,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:20,160 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) [2024-11-17 03:41:20,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-17 03:41:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:20,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-17 03:41:20,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:20,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:20,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:41:20,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507258239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:20,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:41:20,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 10 [2024-11-17 03:41:20,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536599562] [2024-11-17 03:41:20,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:20,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-17 03:41:20,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:20,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-17 03:41:20,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-17 03:41:20,350 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:20,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 143 flow. Second operand has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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) [2024-11-17 03:41:20,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:20,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:20,537 INFO L124 PetriNetUnfolderBase]: 776/1427 cut-off events. [2024-11-17 03:41:20,538 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-17 03:41:20,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2906 conditions, 1427 events. 776/1427 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8087 event pairs, 533 based on Foata normal form. 124/1412 useless extension candidates. Maximal degree in co-relation 2247. Up to 1001 conditions per place. [2024-11-17 03:41:20,542 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 35 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-11-17 03:41:20,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 245 flow [2024-11-17 03:41:20,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:41:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:41:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-11-17 03:41:20,544 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47719298245614034 [2024-11-17 03:41:20,544 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 143 flow. Second operand 5 states and 136 transitions. [2024-11-17 03:41:20,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 245 flow [2024-11-17 03:41:20,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:20,545 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 149 flow [2024-11-17 03:41:20,545 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-11-17 03:41:20,546 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-11-17 03:41:20,546 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 149 flow [2024-11-17 03:41:20,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.714285714285715) internal successors, (145), 7 states have internal predecessors, (145), 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) [2024-11-17 03:41:20,546 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:20,546 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:20,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-17 03:41:20,748 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 [2024-11-17 03:41:20,750 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:20,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:20,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1988498495, now seen corresponding path program 1 times [2024-11-17 03:41:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:20,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301453089] [2024-11-17 03:41:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:20,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:20,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301453089] [2024-11-17 03:41:20,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301453089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:20,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:20,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:41:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387889286] [2024-11-17 03:41:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:20,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:20,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:20,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:20,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:20,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:20,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 149 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-17 03:41:20,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:20,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:20,987 INFO L124 PetriNetUnfolderBase]: 837/1511 cut-off events. [2024-11-17 03:41:20,987 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-17 03:41:20,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3346 conditions, 1511 events. 837/1511 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8304 event pairs, 135 based on Foata normal form. 108/1591 useless extension candidates. Maximal degree in co-relation 2643. Up to 778 conditions per place. [2024-11-17 03:41:20,993 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 68 selfloop transitions, 5 changer transitions 0/87 dead transitions. [2024-11-17 03:41:20,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 87 transitions, 443 flow [2024-11-17 03:41:20,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:41:20,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:41:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-11-17 03:41:20,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-11-17 03:41:20,994 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 149 flow. Second operand 5 states and 159 transitions. [2024-11-17 03:41:20,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 87 transitions, 443 flow [2024-11-17 03:41:20,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-17 03:41:20,997 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 164 flow [2024-11-17 03:41:20,997 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-11-17 03:41:20,998 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-11-17 03:41:20,998 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 164 flow [2024-11-17 03:41:20,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-17 03:41:20,998 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:20,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:20,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:41:20,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:20,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:20,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1322823725, now seen corresponding path program 2 times [2024-11-17 03:41:20,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:20,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347793493] [2024-11-17 03:41:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:21,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:21,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:21,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347793493] [2024-11-17 03:41:21,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347793493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:21,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:21,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:41:21,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327514408] [2024-11-17 03:41:21,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:21,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:21,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:21,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:21,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:21,101 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:21,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-17 03:41:21,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:21,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:21,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:21,261 INFO L124 PetriNetUnfolderBase]: 1039/1878 cut-off events. [2024-11-17 03:41:21,261 INFO L125 PetriNetUnfolderBase]: For 771/771 co-relation queries the response was YES. [2024-11-17 03:41:21,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4371 conditions, 1878 events. 1039/1878 cut-off events. For 771/771 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10700 event pairs, 341 based on Foata normal form. 90/1870 useless extension candidates. Maximal degree in co-relation 3580. Up to 961 conditions per place. [2024-11-17 03:41:21,269 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 59 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-11-17 03:41:21,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 80 transitions, 404 flow [2024-11-17 03:41:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:41:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:41:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-11-17 03:41:21,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-11-17 03:41:21,270 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 164 flow. Second operand 5 states and 150 transitions. [2024-11-17 03:41:21,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 80 transitions, 404 flow [2024-11-17 03:41:21,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 80 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:21,272 INFO L231 Difference]: Finished difference. Result has 64 places, 53 transitions, 207 flow [2024-11-17 03:41:21,272 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=207, PETRI_PLACES=64, PETRI_TRANSITIONS=53} [2024-11-17 03:41:21,272 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 8 predicate places. [2024-11-17 03:41:21,273 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 53 transitions, 207 flow [2024-11-17 03:41:21,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2024-11-17 03:41:21,273 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:21,273 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:21,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:41:21,273 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:21,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:21,273 INFO L85 PathProgramCache]: Analyzing trace with hash -541090849, now seen corresponding path program 3 times [2024-11-17 03:41:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:21,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295273760] [2024-11-17 03:41:21,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:21,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:21,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:21,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:21,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295273760] [2024-11-17 03:41:21,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295273760] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:21,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:21,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:41:21,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302321746] [2024-11-17 03:41:21,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:21,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-17 03:41:21,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:21,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-17 03:41:21,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-17 03:41:21,380 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:21,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:41:21,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:21,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:21,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:21,616 INFO L124 PetriNetUnfolderBase]: 1215/2326 cut-off events. [2024-11-17 03:41:21,616 INFO L125 PetriNetUnfolderBase]: For 1643/1647 co-relation queries the response was YES. [2024-11-17 03:41:21,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5632 conditions, 2326 events. 1215/2326 cut-off events. For 1643/1647 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 13707 event pairs, 270 based on Foata normal form. 104/2389 useless extension candidates. Maximal degree in co-relation 5004. Up to 608 conditions per place. [2024-11-17 03:41:21,628 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 57 selfloop transitions, 4 changer transitions 19/93 dead transitions. [2024-11-17 03:41:21,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 507 flow [2024-11-17 03:41:21,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:41:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:41:21,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 158 transitions. [2024-11-17 03:41:21,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5543859649122806 [2024-11-17 03:41:21,629 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 207 flow. Second operand 5 states and 158 transitions. [2024-11-17 03:41:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 507 flow [2024-11-17 03:41:21,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 93 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:21,632 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 183 flow [2024-11-17 03:41:21,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2024-11-17 03:41:21,635 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 13 predicate places. [2024-11-17 03:41:21,635 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 183 flow [2024-11-17 03:41:21,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 5 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:41:21,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:21,636 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:21,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:41:21,636 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:21,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -706779585, now seen corresponding path program 1 times [2024-11-17 03:41:21,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:21,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771786083] [2024-11-17 03:41:21,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:21,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:41:21,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:21,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771786083] [2024-11-17 03:41:21,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771786083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:21,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:21,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:41:21,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933777675] [2024-11-17 03:41:21,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:21,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:41:21,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:21,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:41:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:41:21,695 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-11-17 03:41:21,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:41:21,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:21,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-11-17 03:41:21,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:21,813 INFO L124 PetriNetUnfolderBase]: 813/1407 cut-off events. [2024-11-17 03:41:21,813 INFO L125 PetriNetUnfolderBase]: For 1621/1647 co-relation queries the response was YES. [2024-11-17 03:41:21,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3778 conditions, 1407 events. 813/1407 cut-off events. For 1621/1647 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7002 event pairs, 356 based on Foata normal form. 8/1412 useless extension candidates. Maximal degree in co-relation 3741. Up to 1081 conditions per place. [2024-11-17 03:41:21,818 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 46 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-17 03:41:21,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 339 flow [2024-11-17 03:41:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:41:21,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:41:21,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-17 03:41:21,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2024-11-17 03:41:21,819 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 183 flow. Second operand 3 states and 96 transitions. [2024-11-17 03:41:21,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 339 flow [2024-11-17 03:41:21,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 304 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-11-17 03:41:21,821 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 167 flow [2024-11-17 03:41:21,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-11-17 03:41:21,822 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2024-11-17 03:41:21,822 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 167 flow [2024-11-17 03:41:21,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:41:21,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:21,822 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:21,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:41:21,823 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:21,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:21,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1220753997, now seen corresponding path program 1 times [2024-11-17 03:41:21,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:21,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62033265] [2024-11-17 03:41:21,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:21,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:22,283 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:22,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:22,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62033265] [2024-11-17 03:41:22,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62033265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:22,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631687911] [2024-11-17 03:41:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:22,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:22,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:22,285 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) [2024-11-17 03:41:22,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-17 03:41:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:22,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-17 03:41:22,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:22,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-17 03:41:22,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:22,652 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:23,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 55 [2024-11-17 03:41:23,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:41:23,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 68 [2024-11-17 03:41:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:23,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631687911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:23,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:23,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 30 [2024-11-17 03:41:23,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554632074] [2024-11-17 03:41:23,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:23,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-17 03:41:23,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:23,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-17 03:41:23,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=763, Unknown=0, NotChecked=0, Total=930 [2024-11-17 03:41:23,340 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-11-17 03:41:23,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 167 flow. Second operand has 31 states, 31 states have (on average 16.451612903225808) internal successors, (510), 31 states have internal predecessors, (510), 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) [2024-11-17 03:41:23,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:23,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-11-17 03:41:23,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:25,930 INFO L124 PetriNetUnfolderBase]: 7521/11828 cut-off events. [2024-11-17 03:41:25,930 INFO L125 PetriNetUnfolderBase]: For 8553/8553 co-relation queries the response was YES. [2024-11-17 03:41:25,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31030 conditions, 11828 events. 7521/11828 cut-off events. For 8553/8553 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 75733 event pairs, 600 based on Foata normal form. 356/12183 useless extension candidates. Maximal degree in co-relation 18773. Up to 2321 conditions per place. [2024-11-17 03:41:25,969 INFO L140 encePairwiseOnDemand]: 41/57 looper letters, 331 selfloop transitions, 103 changer transitions 43/485 dead transitions. [2024-11-17 03:41:25,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 485 transitions, 2592 flow [2024-11-17 03:41:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-17 03:41:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2024-11-17 03:41:25,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 1159 transitions. [2024-11-17 03:41:25,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4066666666666667 [2024-11-17 03:41:25,973 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 167 flow. Second operand 50 states and 1159 transitions. [2024-11-17 03:41:25,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 485 transitions, 2592 flow [2024-11-17 03:41:25,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 485 transitions, 2571 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:25,981 INFO L231 Difference]: Finished difference. Result has 140 places, 164 transitions, 1169 flow [2024-11-17 03:41:25,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=1169, PETRI_PLACES=140, PETRI_TRANSITIONS=164} [2024-11-17 03:41:25,983 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 84 predicate places. [2024-11-17 03:41:25,983 INFO L471 AbstractCegarLoop]: Abstraction has has 140 places, 164 transitions, 1169 flow [2024-11-17 03:41:25,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 16.451612903225808) internal successors, (510), 31 states have internal predecessors, (510), 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) [2024-11-17 03:41:25,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:25,984 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:25,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-17 03:41:26,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:26,189 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1937766475, now seen corresponding path program 2 times [2024-11-17 03:41:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:26,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446197359] [2024-11-17 03:41:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:26,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:26,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:26,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446197359] [2024-11-17 03:41:26,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446197359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:26,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011220680] [2024-11-17 03:41:26,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:41:26,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:26,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:26,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:26,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-17 03:41:26,408 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:41:26,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:26,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-17 03:41:26,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:41:26,450 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-17 03:41:26,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011220680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:26,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-17 03:41:26,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-17 03:41:26,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843535981] [2024-11-17 03:41:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:26,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:26,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:26,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:26,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-17 03:41:26,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-11-17 03:41:26,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 164 transitions, 1169 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 03:41:26,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:26,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-11-17 03:41:26,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:26,991 INFO L124 PetriNetUnfolderBase]: 2705/5195 cut-off events. [2024-11-17 03:41:26,991 INFO L125 PetriNetUnfolderBase]: For 41367/41403 co-relation queries the response was YES. [2024-11-17 03:41:27,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22584 conditions, 5195 events. 2705/5195 cut-off events. For 41367/41403 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 34329 event pairs, 723 based on Foata normal form. 180/5231 useless extension candidates. Maximal degree in co-relation 18617. Up to 1708 conditions per place. [2024-11-17 03:41:27,031 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 131 selfloop transitions, 48 changer transitions 0/210 dead transitions. [2024-11-17 03:41:27,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 210 transitions, 1829 flow [2024-11-17 03:41:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:41:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:41:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-11-17 03:41:27,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-11-17 03:41:27,032 INFO L175 Difference]: Start difference. First operand has 140 places, 164 transitions, 1169 flow. Second operand 4 states and 140 transitions. [2024-11-17 03:41:27,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 210 transitions, 1829 flow [2024-11-17 03:41:27,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 210 transitions, 1567 flow, removed 82 selfloop flow, removed 15 redundant places. [2024-11-17 03:41:27,106 INFO L231 Difference]: Finished difference. Result has 122 places, 168 transitions, 1237 flow [2024-11-17 03:41:27,106 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1237, PETRI_PLACES=122, PETRI_TRANSITIONS=168} [2024-11-17 03:41:27,107 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 66 predicate places. [2024-11-17 03:41:27,107 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 168 transitions, 1237 flow [2024-11-17 03:41:27,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-17 03:41:27,107 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:27,107 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:27,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-17 03:41:27,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:27,308 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:27,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 657274775, now seen corresponding path program 3 times [2024-11-17 03:41:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769958186] [2024-11-17 03:41:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:28,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769958186] [2024-11-17 03:41:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769958186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:28,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248356401] [2024-11-17 03:41:28,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:41:28,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:28,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:28,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:28,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-17 03:41:28,338 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-17 03:41:28,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:28,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-17 03:41:28,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 03:41:28,496 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:28,591 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:41:28,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 24 [2024-11-17 03:41:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-17 03:41:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248356401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:28,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 21 [2024-11-17 03:41:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182623150] [2024-11-17 03:41:28,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:28,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-17 03:41:28,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-17 03:41:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2024-11-17 03:41:28,759 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-17 03:41:28,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 168 transitions, 1237 flow. Second operand has 22 states, 22 states have (on average 19.863636363636363) internal successors, (437), 22 states have internal predecessors, (437), 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) [2024-11-17 03:41:28,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:28,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-17 03:41:28,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:30,380 INFO L124 PetriNetUnfolderBase]: 6293/10929 cut-off events. [2024-11-17 03:41:30,380 INFO L125 PetriNetUnfolderBase]: For 62425/62545 co-relation queries the response was YES. [2024-11-17 03:41:30,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45625 conditions, 10929 events. 6293/10929 cut-off events. For 62425/62545 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 74797 event pairs, 622 based on Foata normal form. 388/11166 useless extension candidates. Maximal degree in co-relation 23035. Up to 2594 conditions per place. [2024-11-17 03:41:30,444 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 223 selfloop transitions, 80 changer transitions 58/384 dead transitions. [2024-11-17 03:41:30,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 384 transitions, 3610 flow [2024-11-17 03:41:30,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-17 03:41:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-17 03:41:30,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 610 transitions. [2024-11-17 03:41:30,447 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.396361273554256 [2024-11-17 03:41:30,447 INFO L175 Difference]: Start difference. First operand has 122 places, 168 transitions, 1237 flow. Second operand 27 states and 610 transitions. [2024-11-17 03:41:30,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 384 transitions, 3610 flow [2024-11-17 03:41:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 384 transitions, 3500 flow, removed 55 selfloop flow, removed 0 redundant places. [2024-11-17 03:41:30,528 INFO L231 Difference]: Finished difference. Result has 150 places, 198 transitions, 1693 flow [2024-11-17 03:41:30,528 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1693, PETRI_PLACES=150, PETRI_TRANSITIONS=198} [2024-11-17 03:41:30,528 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 94 predicate places. [2024-11-17 03:41:30,529 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 198 transitions, 1693 flow [2024-11-17 03:41:30,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 19.863636363636363) internal successors, (437), 22 states have internal predecessors, (437), 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) [2024-11-17 03:41:30,529 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:30,529 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:30,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-17 03:41:30,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-17 03:41:30,731 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:30,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:30,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1523237645, now seen corresponding path program 4 times [2024-11-17 03:41:30,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:30,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51493984] [2024-11-17 03:41:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:30,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:41:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51493984] [2024-11-17 03:41:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51493984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:30,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213086154] [2024-11-17 03:41:30,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:41:30,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:30,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:30,860 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:30,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-17 03:41:30,933 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:41:30,934 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:30,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-17 03:41:30,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:41:31,018 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:31,124 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-17 03:41:31,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213086154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:31,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:31,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2024-11-17 03:41:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770572003] [2024-11-17 03:41:31,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:31,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-17 03:41:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:31,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-17 03:41:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-17 03:41:31,140 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:41:31,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 198 transitions, 1693 flow. Second operand has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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) [2024-11-17 03:41:31,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:31,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:41:31,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:32,014 INFO L124 PetriNetUnfolderBase]: 2710/5212 cut-off events. [2024-11-17 03:41:32,014 INFO L125 PetriNetUnfolderBase]: For 30717/30755 co-relation queries the response was YES. [2024-11-17 03:41:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22444 conditions, 5212 events. 2710/5212 cut-off events. For 30717/30755 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 33991 event pairs, 841 based on Foata normal form. 34/5090 useless extension candidates. Maximal degree in co-relation 16813. Up to 3544 conditions per place. [2024-11-17 03:41:32,049 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 119 selfloop transitions, 15 changer transitions 34/191 dead transitions. [2024-11-17 03:41:32,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 191 transitions, 1844 flow [2024-11-17 03:41:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-17 03:41:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-17 03:41:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 276 transitions. [2024-11-17 03:41:32,051 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-11-17 03:41:32,051 INFO L175 Difference]: Start difference. First operand has 150 places, 198 transitions, 1693 flow. Second operand 11 states and 276 transitions. [2024-11-17 03:41:32,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 191 transitions, 1844 flow [2024-11-17 03:41:32,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 191 transitions, 1707 flow, removed 20 selfloop flow, removed 15 redundant places. [2024-11-17 03:41:32,082 INFO L231 Difference]: Finished difference. Result has 138 places, 153 transitions, 1211 flow [2024-11-17 03:41:32,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1211, PETRI_PLACES=138, PETRI_TRANSITIONS=153} [2024-11-17 03:41:32,083 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-11-17 03:41:32,083 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 153 transitions, 1211 flow [2024-11-17 03:41:32,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 22.53846153846154) internal successors, (293), 13 states have internal predecessors, (293), 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) [2024-11-17 03:41:32,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:32,084 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:32,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-17 03:41:32,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-17 03:41:32,285 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:32,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash -37680339, now seen corresponding path program 5 times [2024-11-17 03:41:32,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:32,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662187485] [2024-11-17 03:41:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:32,409 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:41:32,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662187485] [2024-11-17 03:41:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662187485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:41:32,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:41:32,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-17 03:41:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555072342] [2024-11-17 03:41:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:41:32,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:41:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:32,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:41:32,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:41:32,415 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-11-17 03:41:32,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 153 transitions, 1211 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-17 03:41:32,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:32,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-11-17 03:41:32,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:33,183 INFO L124 PetriNetUnfolderBase]: 5074/9068 cut-off events. [2024-11-17 03:41:33,184 INFO L125 PetriNetUnfolderBase]: For 42000/42092 co-relation queries the response was YES. [2024-11-17 03:41:33,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 9068 events. 5074/9068 cut-off events. For 42000/42092 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 60079 event pairs, 1230 based on Foata normal form. 492/9363 useless extension candidates. Maximal degree in co-relation 29282. Up to 4009 conditions per place. [2024-11-17 03:41:33,235 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 173 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2024-11-17 03:41:33,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 193 transitions, 1863 flow [2024-11-17 03:41:33,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:41:33,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:41:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-11-17 03:41:33,236 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5219298245614035 [2024-11-17 03:41:33,237 INFO L175 Difference]: Start difference. First operand has 138 places, 153 transitions, 1211 flow. Second operand 4 states and 119 transitions. [2024-11-17 03:41:33,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 193 transitions, 1863 flow [2024-11-17 03:41:33,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 193 transitions, 1832 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-11-17 03:41:33,270 INFO L231 Difference]: Finished difference. Result has 119 places, 152 transitions, 1201 flow [2024-11-17 03:41:33,270 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1201, PETRI_PLACES=119, PETRI_TRANSITIONS=152} [2024-11-17 03:41:33,271 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-11-17 03:41:33,271 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 152 transitions, 1201 flow [2024-11-17 03:41:33,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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) [2024-11-17 03:41:33,271 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:33,271 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:33,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-17 03:41:33,271 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:33,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash -369342065, now seen corresponding path program 1 times [2024-11-17 03:41:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:33,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221897142] [2024-11-17 03:41:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:33,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221897142] [2024-11-17 03:41:34,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221897142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:34,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218390763] [2024-11-17 03:41:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:34,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:34,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:34,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:34,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-17 03:41:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:34,127 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-17 03:41:34,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:34,575 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:34,880 INFO L349 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2024-11-17 03:41:34,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 50 [2024-11-17 03:41:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218390763] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:35,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:35,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 38 [2024-11-17 03:41:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257476875] [2024-11-17 03:41:35,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:35,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-17 03:41:35,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:35,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-17 03:41:35,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1266, Unknown=0, NotChecked=0, Total=1482 [2024-11-17 03:41:35,396 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-11-17 03:41:35,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 152 transitions, 1201 flow. Second operand has 39 states, 39 states have (on average 16.846153846153847) internal successors, (657), 39 states have internal predecessors, (657), 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) [2024-11-17 03:41:35,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:35,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-11-17 03:41:35,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:41,317 INFO L124 PetriNetUnfolderBase]: 15022/25744 cut-off events. [2024-11-17 03:41:41,318 INFO L125 PetriNetUnfolderBase]: For 102782/102946 co-relation queries the response was YES. [2024-11-17 03:41:41,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99140 conditions, 25744 events. 15022/25744 cut-off events. For 102782/102946 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 188149 event pairs, 1180 based on Foata normal form. 700/26241 useless extension candidates. Maximal degree in co-relation 50110. Up to 3238 conditions per place. [2024-11-17 03:41:41,460 INFO L140 encePairwiseOnDemand]: 41/57 looper letters, 595 selfloop transitions, 344 changer transitions 94/1043 dead transitions. [2024-11-17 03:41:41,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1043 transitions, 9133 flow [2024-11-17 03:41:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-17 03:41:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2024-11-17 03:41:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 1915 transitions. [2024-11-17 03:41:41,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39065687474500205 [2024-11-17 03:41:41,464 INFO L175 Difference]: Start difference. First operand has 119 places, 152 transitions, 1201 flow. Second operand 86 states and 1915 transitions. [2024-11-17 03:41:41,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 1043 transitions, 9133 flow [2024-11-17 03:41:41,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1043 transitions, 8959 flow, removed 85 selfloop flow, removed 1 redundant places. [2024-11-17 03:41:41,543 INFO L231 Difference]: Finished difference. Result has 239 places, 437 transitions, 4822 flow [2024-11-17 03:41:41,544 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=4822, PETRI_PLACES=239, PETRI_TRANSITIONS=437} [2024-11-17 03:41:41,544 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 183 predicate places. [2024-11-17 03:41:41,544 INFO L471 AbstractCegarLoop]: Abstraction has has 239 places, 437 transitions, 4822 flow [2024-11-17 03:41:41,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 16.846153846153847) internal successors, (657), 39 states have internal predecessors, (657), 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) [2024-11-17 03:41:41,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:41,545 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:41,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-17 03:41:41,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:41,746 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:41,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:41,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1101927011, now seen corresponding path program 2 times [2024-11-17 03:41:41,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:41,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703158660] [2024-11-17 03:41:41,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:41,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:42,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:42,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703158660] [2024-11-17 03:41:42,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703158660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:42,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77037575] [2024-11-17 03:41:42,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-17 03:41:42,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:42,768 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:42,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-17 03:41:42,833 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-17 03:41:42,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:42,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-17 03:41:42,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:43,369 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:43,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:43,663 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:41:43,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-11-17 03:41:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:44,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77037575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:44,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:44,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 40 [2024-11-17 03:41:44,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828239173] [2024-11-17 03:41:44,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:44,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-17 03:41:44,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:44,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-17 03:41:44,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2024-11-17 03:41:44,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-17 03:41:44,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 437 transitions, 4822 flow. Second operand has 41 states, 41 states have (on average 18.365853658536587) internal successors, (753), 41 states have internal predecessors, (753), 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) [2024-11-17 03:41:44,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:44,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-17 03:41:44,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:41:54,263 INFO L124 PetriNetUnfolderBase]: 26008/44632 cut-off events. [2024-11-17 03:41:54,263 INFO L125 PetriNetUnfolderBase]: For 648411/648641 co-relation queries the response was YES. [2024-11-17 03:41:54,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224690 conditions, 44632 events. 26008/44632 cut-off events. For 648411/648641 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 367916 event pairs, 1973 based on Foata normal form. 1110/45586 useless extension candidates. Maximal degree in co-relation 223119. Up to 5795 conditions per place. [2024-11-17 03:41:54,687 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 731 selfloop transitions, 308 changer transitions 445/1551 dead transitions. [2024-11-17 03:41:54,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1551 transitions, 18689 flow [2024-11-17 03:41:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-17 03:41:54,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-11-17 03:41:54,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 1932 transitions. [2024-11-17 03:41:54,690 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4290473017988008 [2024-11-17 03:41:54,690 INFO L175 Difference]: Start difference. First operand has 239 places, 437 transitions, 4822 flow. Second operand 79 states and 1932 transitions. [2024-11-17 03:41:54,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1551 transitions, 18689 flow [2024-11-17 03:41:56,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 1551 transitions, 16503 flow, removed 1022 selfloop flow, removed 9 redundant places. [2024-11-17 03:41:56,776 INFO L231 Difference]: Finished difference. Result has 343 places, 631 transitions, 7585 flow [2024-11-17 03:41:56,776 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=7585, PETRI_PLACES=343, PETRI_TRANSITIONS=631} [2024-11-17 03:41:56,776 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 287 predicate places. [2024-11-17 03:41:56,776 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 631 transitions, 7585 flow [2024-11-17 03:41:56,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 18.365853658536587) internal successors, (753), 41 states have internal predecessors, (753), 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) [2024-11-17 03:41:56,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:41:56,777 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:41:56,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-17 03:41:56,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-17 03:41:56,979 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:41:56,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:41:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash 118302489, now seen corresponding path program 3 times [2024-11-17 03:41:56,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:41:56,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575984583] [2024-11-17 03:41:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:41:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:41:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:41:57,893 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:41:57,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:41:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575984583] [2024-11-17 03:41:57,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575984583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:41:57,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191294495] [2024-11-17 03:41:57,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-17 03:41:57,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:41:57,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:41:57,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:41:57,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-17 03:41:57,997 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-17 03:41:57,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:41:57,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-17 03:41:57,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:41:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-17 03:41:58,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:41:58,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-17 03:41:58,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 60 [2024-11-17 03:41:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 03:41:58,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191294495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:41:58,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:41:58,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 10] total 33 [2024-11-17 03:41:58,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227641969] [2024-11-17 03:41:58,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:41:58,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-17 03:41:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:41:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-17 03:41:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=965, Unknown=0, NotChecked=0, Total=1122 [2024-11-17 03:41:58,784 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-11-17 03:41:58,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 631 transitions, 7585 flow. Second operand has 34 states, 34 states have (on average 19.91176470588235) internal successors, (677), 34 states have internal predecessors, (677), 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) [2024-11-17 03:41:58,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:41:58,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-11-17 03:41:58,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:06,550 INFO L124 PetriNetUnfolderBase]: 16291/30443 cut-off events. [2024-11-17 03:42:06,551 INFO L125 PetriNetUnfolderBase]: For 994910/995040 co-relation queries the response was YES. [2024-11-17 03:42:06,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185011 conditions, 30443 events. 16291/30443 cut-off events. For 994910/995040 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 254450 event pairs, 816 based on Foata normal form. 510/30711 useless extension candidates. Maximal degree in co-relation 183932. Up to 3924 conditions per place. [2024-11-17 03:42:06,916 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 549 selfloop transitions, 270 changer transitions 79/984 dead transitions. [2024-11-17 03:42:06,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 984 transitions, 13430 flow [2024-11-17 03:42:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-17 03:42:06,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-11-17 03:42:06,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 979 transitions. [2024-11-17 03:42:06,918 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41891313649978607 [2024-11-17 03:42:06,918 INFO L175 Difference]: Start difference. First operand has 343 places, 631 transitions, 7585 flow. Second operand 41 states and 979 transitions. [2024-11-17 03:42:06,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 984 transitions, 13430 flow [2024-11-17 03:42:13,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 984 transitions, 12092 flow, removed 587 selfloop flow, removed 26 redundant places. [2024-11-17 03:42:13,296 INFO L231 Difference]: Finished difference. Result has 361 places, 696 transitions, 7969 flow [2024-11-17 03:42:13,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=6506, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=7969, PETRI_PLACES=361, PETRI_TRANSITIONS=696} [2024-11-17 03:42:13,297 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 305 predicate places. [2024-11-17 03:42:13,297 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 696 transitions, 7969 flow [2024-11-17 03:42:13,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 19.91176470588235) internal successors, (677), 34 states have internal predecessors, (677), 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) [2024-11-17 03:42:13,298 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:13,298 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:13,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-17 03:42:13,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:13,499 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:42:13,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:13,499 INFO L85 PathProgramCache]: Analyzing trace with hash 841942253, now seen corresponding path program 4 times [2024-11-17 03:42:13,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:13,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009938894] [2024-11-17 03:42:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:13,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:42:13,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009938894] [2024-11-17 03:42:13,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009938894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:13,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592406774] [2024-11-17 03:42:13,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-17 03:42:13,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:13,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:13,644 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:42:13,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-17 03:42:13,715 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-17 03:42:13,715 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:13,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-17 03:42:13,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:13,827 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 24 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:42:13,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-17 03:42:13,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592406774] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:13,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:13,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-17 03:42:13,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774273697] [2024-11-17 03:42:13,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:13,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-17 03:42:13,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-17 03:42:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-17 03:42:13,977 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-11-17 03:42:13,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 696 transitions, 7969 flow. Second operand has 18 states, 18 states have (on average 22.11111111111111) internal successors, (398), 18 states have internal predecessors, (398), 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) [2024-11-17 03:42:13,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:13,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-11-17 03:42:13,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:16,456 INFO L124 PetriNetUnfolderBase]: 5717/11790 cut-off events. [2024-11-17 03:42:16,456 INFO L125 PetriNetUnfolderBase]: For 364352/364730 co-relation queries the response was YES. [2024-11-17 03:42:16,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76428 conditions, 11790 events. 5717/11790 cut-off events. For 364352/364730 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 90696 event pairs, 1800 based on Foata normal form. 158/11679 useless extension candidates. Maximal degree in co-relation 76325. Up to 7821 conditions per place. [2024-11-17 03:42:16,564 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 225 selfloop transitions, 15 changer transitions 70/352 dead transitions. [2024-11-17 03:42:16,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 352 transitions, 4886 flow [2024-11-17 03:42:16,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-17 03:42:16,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-17 03:42:16,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2024-11-17 03:42:16,565 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44534412955465585 [2024-11-17 03:42:16,565 INFO L175 Difference]: Start difference. First operand has 361 places, 696 transitions, 7969 flow. Second operand 13 states and 330 transitions. [2024-11-17 03:42:16,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 352 transitions, 4886 flow [2024-11-17 03:42:17,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 352 transitions, 4417 flow, removed 159 selfloop flow, removed 40 redundant places. [2024-11-17 03:42:17,008 INFO L231 Difference]: Finished difference. Result has 273 places, 278 transitions, 3177 flow [2024-11-17 03:42:17,009 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3177, PETRI_PLACES=273, PETRI_TRANSITIONS=278} [2024-11-17 03:42:17,009 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 217 predicate places. [2024-11-17 03:42:17,009 INFO L471 AbstractCegarLoop]: Abstraction has has 273 places, 278 transitions, 3177 flow [2024-11-17 03:42:17,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 22.11111111111111) internal successors, (398), 18 states have internal predecessors, (398), 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) [2024-11-17 03:42:17,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:17,009 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:17,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-17 03:42:17,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:17,210 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:42:17,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash 600539611, now seen corresponding path program 5 times [2024-11-17 03:42:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:17,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002960158] [2024-11-17 03:42:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 03:42:17,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002960158] [2024-11-17 03:42:17,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002960158] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:17,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063291057] [2024-11-17 03:42:17,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-17 03:42:17,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:17,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:42:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-17 03:42:17,359 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-17 03:42:17,359 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:17,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-17 03:42:17,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 03:42:17,403 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-17 03:42:17,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063291057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:17,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:17,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 10 [2024-11-17 03:42:17,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49199129] [2024-11-17 03:42:17,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:17,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-17 03:42:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:17,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-17 03:42:17,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2024-11-17 03:42:17,520 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 57 [2024-11-17 03:42:17,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 278 transitions, 3177 flow. Second operand has 11 states, 11 states have (on average 26.363636363636363) internal successors, (290), 11 states have internal predecessors, (290), 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) [2024-11-17 03:42:17,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:17,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 57 [2024-11-17 03:42:17,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:42:20,172 INFO L124 PetriNetUnfolderBase]: 9194/18351 cut-off events. [2024-11-17 03:42:20,172 INFO L125 PetriNetUnfolderBase]: For 273510/273990 co-relation queries the response was YES. [2024-11-17 03:42:20,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98103 conditions, 18351 events. 9194/18351 cut-off events. For 273510/273990 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 147436 event pairs, 2459 based on Foata normal form. 260/18196 useless extension candidates. Maximal degree in co-relation 98026. Up to 4060 conditions per place. [2024-11-17 03:42:20,517 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 251 selfloop transitions, 173 changer transitions 1/470 dead transitions. [2024-11-17 03:42:20,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 470 transitions, 6142 flow [2024-11-17 03:42:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:42:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:42:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-11-17 03:42:20,519 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6210526315789474 [2024-11-17 03:42:20,519 INFO L175 Difference]: Start difference. First operand has 273 places, 278 transitions, 3177 flow. Second operand 5 states and 177 transitions. [2024-11-17 03:42:20,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 470 transitions, 6142 flow [2024-11-17 03:42:20,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 470 transitions, 5798 flow, removed 66 selfloop flow, removed 29 redundant places. [2024-11-17 03:42:20,850 INFO L231 Difference]: Finished difference. Result has 216 places, 377 transitions, 4982 flow [2024-11-17 03:42:20,850 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4982, PETRI_PLACES=216, PETRI_TRANSITIONS=377} [2024-11-17 03:42:20,850 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 160 predicate places. [2024-11-17 03:42:20,850 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 377 transitions, 4982 flow [2024-11-17 03:42:20,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 26.363636363636363) internal successors, (290), 11 states have internal predecessors, (290), 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) [2024-11-17 03:42:20,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:42:20,851 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:42:20,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-17 03:42:21,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-17 03:42:21,052 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2024-11-17 03:42:21,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:42:21,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2044208775, now seen corresponding path program 6 times [2024-11-17 03:42:21,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:42:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333668286] [2024-11-17 03:42:21,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:42:21,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:42:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:42:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:42:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333668286] [2024-11-17 03:42:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333668286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-17 03:42:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14128962] [2024-11-17 03:42:22,264 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-17 03:42:22,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-17 03:42:22,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:42:22,266 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-17 03:42:22,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-17 03:42:22,337 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-17 03:42:22,338 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-17 03:42:22,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-17 03:42:22,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-17 03:42:23,248 INFO L349 Elim1Store]: treesize reduction 99, result has 9.2 percent of original size [2024-11-17 03:42:23,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 68 treesize of output 27 [2024-11-17 03:42:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:23,317 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-17 03:42:24,036 INFO L349 Elim1Store]: treesize reduction 50, result has 54.1 percent of original size [2024-11-17 03:42:24,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 106 treesize of output 88 [2024-11-17 03:42:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:42:24,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14128962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-17 03:42:24,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-17 03:42:24,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 46 [2024-11-17 03:42:24,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180325455] [2024-11-17 03:42:24,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-17 03:42:24,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-17 03:42:24,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:42:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-17 03:42:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1849, Unknown=0, NotChecked=0, Total=2162 [2024-11-17 03:42:25,071 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-11-17 03:42:25,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 377 transitions, 4982 flow. Second operand has 47 states, 47 states have (on average 18.574468085106382) internal successors, (873), 47 states have internal predecessors, (873), 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) [2024-11-17 03:42:25,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:42:25,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-11-17 03:42:25,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand