./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/weaver/popl20-more-multiply-verify.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 d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:49:50,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:49:50,322 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:49:50,327 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:49:50,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:49:50,352 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:49:50,354 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:49:50,355 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:49:50,355 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:49:50,356 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:49:50,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:49:50,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:49:50,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:49:50,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:49:50,359 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:49:50,360 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:49:50,360 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:49:50,360 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:49:50,360 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:49:50,360 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:49:50,361 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:49:50,361 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:49:50,361 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:49:50,364 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:49:50,364 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:49:50,364 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:49:50,365 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:49:50,365 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:49:50,365 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:49:50,365 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:49:50,365 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:49:50,365 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:50,366 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:49:50,366 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:49:50,367 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:49:50,367 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:49:50,367 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:49:50,367 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d79cb5dae664e13779624ff0ffbc531b419f89e2c7510a92e890992a52ee7c98 [2024-11-22 21:49:50,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:49:50,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:49:50,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:49:50,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:49:50,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:49:50,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-22 21:49:51,893 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:49:52,042 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:49:52,042 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2024-11-22 21:49:52,049 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5250d9cd1/089f62019fe844d0a74e402a7d07306b/FLAG5ee94addd [2024-11-22 21:49:52,441 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5250d9cd1/089f62019fe844d0a74e402a7d07306b [2024-11-22 21:49:52,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:49:52,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:49:52,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:52,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:49:52,455 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:49:52,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15932a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52, skipping insertion in model container [2024-11-22 21:49:52,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,485 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:49:52,662 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:49:52,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:52,670 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:49:52,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:49:52,708 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:49:52,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52 WrapperNode [2024-11-22 21:49:52,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:49:52,710 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:52,710 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:49:52,710 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:49:52,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,720 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,738 INFO L138 Inliner]: procedures = 25, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 173 [2024-11-22 21:49:52,739 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:49:52,739 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:49:52,740 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:49:52,740 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:49:52,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,778 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,818 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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]. [2024-11-22 21:49:52,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,841 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,848 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:49:52,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:49:52,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:49:52,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:49:52,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (1/1) ... [2024-11-22 21:49:52,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:49:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:52,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:49:52,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:49:52,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-22 21:49:52,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-22 21:49:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-22 21:49:52,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-22 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-22 21:49:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-22 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:49:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:49:52,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-22 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-22 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:49:52,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:49:52,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:49:52,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:49:52,949 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 21:49:53,055 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:49:53,057 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:49:53,276 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 21:49:53,277 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:49:53,423 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:49:53,423 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-22 21:49:53,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:53 BoogieIcfgContainer [2024-11-22 21:49:53,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:49:53,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:49:53,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:49:53,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:49:53,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:49:52" (1/3) ... [2024-11-22 21:49:53,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73569c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:53, skipping insertion in model container [2024-11-22 21:49:53,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:49:52" (2/3) ... [2024-11-22 21:49:53,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73569c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:49:53, skipping insertion in model container [2024-11-22 21:49:53,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:49:53" (3/3) ... [2024-11-22 21:49:53,431 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2024-11-22 21:49:53,443 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:49:53,443 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2024-11-22 21:49:53,443 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 21:49:53,499 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-22 21:49:53,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 49 transitions, 119 flow [2024-11-22 21:49:53,548 INFO L124 PetriNetUnfolderBase]: 3/46 cut-off events. [2024-11-22 21:49:53,548 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-22 21:49:53,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 3/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 93 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-11-22 21:49:53,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 49 transitions, 119 flow [2024-11-22 21:49:53,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 108 flow [2024-11-22 21:49:53,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:49:53,569 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;@615bb302, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:49:53,570 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-11-22 21:49:53,572 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 21:49:53,573 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-22 21:49:53,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 21:49:53,573 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:53,573 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:53,574 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:53,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 530533, now seen corresponding path program 1 times [2024-11-22 21:49:53,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:53,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367468097] [2024-11-22 21:49:53,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:53,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:53,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:53,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367468097] [2024-11-22 21:49:53,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367468097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:53,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 21:49:53,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623508227] [2024-11-22 21:49:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:53,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:49:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:49:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:49:53,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-22 21:49:53,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:53,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:53,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-22 21:49:53,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:54,109 INFO L124 PetriNetUnfolderBase]: 886/1463 cut-off events. [2024-11-22 21:49:54,109 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2024-11-22 21:49:54,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 1463 events. 886/1463 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 7560 event pairs, 768 based on Foata normal form. 1/1087 useless extension candidates. Maximal degree in co-relation 2758. Up to 1319 conditions per place. [2024-11-22 21:49:54,126 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2024-11-22 21:49:54,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 162 flow [2024-11-22 21:49:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:49:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:49:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-22 21:49:54,136 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.54421768707483 [2024-11-22 21:49:54,138 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 108 flow. Second operand 3 states and 80 transitions. [2024-11-22 21:49:54,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 162 flow [2024-11-22 21:49:54,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 21:49:54,145 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 94 flow [2024-11-22 21:49:54,147 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2024-11-22 21:49:54,151 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-22 21:49:54,151 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 94 flow [2024-11-22 21:49:54,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:54,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:54,152 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-22 21:49:54,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:49:54,152 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:54,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:54,154 INFO L85 PathProgramCache]: Analyzing trace with hash 530534, now seen corresponding path program 1 times [2024-11-22 21:49:54,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:54,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508357464] [2024-11-22 21:49:54,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:54,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:54,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:54,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508357464] [2024-11-22 21:49:54,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508357464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:54,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:54,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679438288] [2024-11-22 21:49:54,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:54,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:54,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:54,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:54,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:54,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-22 21:49:54,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:54,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:54,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-22 21:49:54,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:54,605 INFO L124 PetriNetUnfolderBase]: 887/1436 cut-off events. [2024-11-22 21:49:54,605 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-22 21:49:54,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1436 events. 887/1436 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7237 event pairs, 768 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 2802. Up to 1324 conditions per place. [2024-11-22 21:49:54,613 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 30 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-11-22 21:49:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 170 flow [2024-11-22 21:49:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-11-22 21:49:54,615 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5051020408163265 [2024-11-22 21:49:54,615 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 94 flow. Second operand 4 states and 99 transitions. [2024-11-22 21:49:54,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 170 flow [2024-11-22 21:49:54,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:54,617 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 117 flow [2024-11-22 21:49:54,617 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-22 21:49:54,617 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-22 21:49:54,618 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 117 flow [2024-11-22 21:49:54,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:54,618 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:54,618 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-22 21:49:54,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:49:54,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:54,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:54,619 INFO L85 PathProgramCache]: Analyzing trace with hash 509859573, now seen corresponding path program 1 times [2024-11-22 21:49:54,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:54,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597184194] [2024-11-22 21:49:54,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:54,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:54,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597184194] [2024-11-22 21:49:54,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597184194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:54,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209339274] [2024-11-22 21:49:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:54,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:54,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:54,823 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:49:54,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:49:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:54,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-22 21:49:54,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:54,960 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 10 treesize of output 9 [2024-11-22 21:49:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:55,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209339274] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:55,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:55,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-22 21:49:55,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731321399] [2024-11-22 21:49:55,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:55,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:49:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:49:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:49:55,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-11-22 21:49:55,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 117 flow. Second operand has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:55,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:55,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-11-22 21:49:55,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:55,667 INFO L124 PetriNetUnfolderBase]: 888/1438 cut-off events. [2024-11-22 21:49:55,667 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-22 21:49:55,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2840 conditions, 1438 events. 888/1438 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 7225 event pairs, 768 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2809. Up to 1321 conditions per place. [2024-11-22 21:49:55,674 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 26 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-11-22 21:49:55,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 197 flow [2024-11-22 21:49:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:49:55,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-22 21:49:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 166 transitions. [2024-11-22 21:49:55,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-22 21:49:55,676 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 117 flow. Second operand 8 states and 166 transitions. [2024-11-22 21:49:55,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 197 flow [2024-11-22 21:49:55,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 21:49:55,677 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 142 flow [2024-11-22 21:49:55,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-11-22 21:49:55,678 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-22 21:49:55,678 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 142 flow [2024-11-22 21:49:55,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.363636363636363) internal successors, (191), 11 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:55,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:55,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 21:49:55,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:49:55,879 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 [2024-11-22 21:49:55,880 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:55,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1371248172, now seen corresponding path program 1 times [2024-11-22 21:49:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:55,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024287474] [2024-11-22 21:49:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:55,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024287474] [2024-11-22 21:49:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024287474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545783237] [2024-11-22 21:49:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:55,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:55,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:55,953 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-22 21:49:55,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 142 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:55,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:55,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-22 21:49:55,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:56,107 INFO L124 PetriNetUnfolderBase]: 957/1570 cut-off events. [2024-11-22 21:49:56,107 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-22 21:49:56,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 1570 events. 957/1570 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 7786 event pairs, 812 based on Foata normal form. 41/1295 useless extension candidates. Maximal degree in co-relation 2810. Up to 1325 conditions per place. [2024-11-22 21:49:56,115 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 33 selfloop transitions, 2 changer transitions 13/59 dead transitions. [2024-11-22 21:49:56,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 265 flow [2024-11-22 21:49:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:56,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-22 21:49:56,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-22 21:49:56,116 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 142 flow. Second operand 4 states and 120 transitions. [2024-11-22 21:49:56,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 265 flow [2024-11-22 21:49:56,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 223 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-22 21:49:56,118 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 116 flow [2024-11-22 21:49:56,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=4, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-11-22 21:49:56,118 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-22 21:49:56,119 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 116 flow [2024-11-22 21:49:56,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,119 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:56,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:56,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:49:56,120 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:56,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:56,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2069304091, now seen corresponding path program 1 times [2024-11-22 21:49:56,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:56,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149326359] [2024-11-22 21:49:56,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:56,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:56,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:56,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149326359] [2024-11-22 21:49:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149326359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:56,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:56,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949002260] [2024-11-22 21:49:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:56,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:49:56,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:49:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:49:56,324 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-22 21:49:56,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:56,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-22 21:49:56,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:56,436 INFO L124 PetriNetUnfolderBase]: 659/1084 cut-off events. [2024-11-22 21:49:56,437 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-11-22 21:49:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1084 events. 659/1084 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5172 event pairs, 556 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2391. Up to 982 conditions per place. [2024-11-22 21:49:56,444 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 30 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2024-11-22 21:49:56,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 174 flow [2024-11-22 21:49:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2024-11-22 21:49:56,446 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-22 21:49:56,446 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 116 flow. Second operand 4 states and 98 transitions. [2024-11-22 21:49:56,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 174 flow [2024-11-22 21:49:56,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:56,449 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 110 flow [2024-11-22 21:49:56,449 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-11-22 21:49:56,453 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2024-11-22 21:49:56,453 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 110 flow [2024-11-22 21:49:56,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:56,454 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:56,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:49:56,454 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:56,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -2069304092, now seen corresponding path program 1 times [2024-11-22 21:49:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225829677] [2024-11-22 21:49:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:56,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:56,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:56,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225829677] [2024-11-22 21:49:56,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225829677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:56,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:56,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:56,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465070867] [2024-11-22 21:49:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:56,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:56,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:56,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:56,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:56,524 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-11-22 21:49:56,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-11-22 21:49:56,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:56,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-11-22 21:49:56,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:56,637 INFO L124 PetriNetUnfolderBase]: 601/983 cut-off events. [2024-11-22 21:49:56,637 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-11-22 21:49:56,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2077 conditions, 983 events. 601/983 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4098 event pairs, 493 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 2052. Up to 887 conditions per place. [2024-11-22 21:49:56,641 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 29 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2024-11-22 21:49:56,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 162 flow [2024-11-22 21:49:56,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:56,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-11-22 21:49:56,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42346938775510207 [2024-11-22 21:49:56,642 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 110 flow. Second operand 4 states and 83 transitions. [2024-11-22 21:49:56,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 162 flow [2024-11-22 21:49:56,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:56,643 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 100 flow [2024-11-22 21:49:56,644 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=100, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-11-22 21:49:56,644 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-11-22 21:49:56,644 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 100 flow [2024-11-22 21:49:56,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 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) [2024-11-22 21:49:56,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:56,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:56,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:49:56,645 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:56,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 261910913, now seen corresponding path program 1 times [2024-11-22 21:49:56,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:56,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089211858] [2024-11-22 21:49:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:56,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:56,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 21:49:56,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:56,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089211858] [2024-11-22 21:49:56,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089211858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:56,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:56,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:49:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391980174] [2024-11-22 21:49:56,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:56,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:49:56,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:56,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:49:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:49:56,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-22 21:49:56,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:56,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-22 21:49:56,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:56,744 INFO L124 PetriNetUnfolderBase]: 351/669 cut-off events. [2024-11-22 21:49:56,745 INFO L125 PetriNetUnfolderBase]: For 88/93 co-relation queries the response was YES. [2024-11-22 21:49:56,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1360 conditions, 669 events. 351/669 cut-off events. For 88/93 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3080 event pairs, 118 based on Foata normal form. 15/636 useless extension candidates. Maximal degree in co-relation 1333. Up to 432 conditions per place. [2024-11-22 21:49:56,747 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 41 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2024-11-22 21:49:56,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 220 flow [2024-11-22 21:49:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:49:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 21:49:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-11-22 21:49:56,748 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-11-22 21:49:56,749 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 100 flow. Second operand 3 states and 91 transitions. [2024-11-22 21:49:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 220 flow [2024-11-22 21:49:56,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:56,750 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 119 flow [2024-11-22 21:49:56,750 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-11-22 21:49:56,750 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2024-11-22 21:49:56,751 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 119 flow [2024-11-22 21:49:56,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:56,751 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:56,751 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:56,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:49:56,751 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:56,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash 125646988, now seen corresponding path program 1 times [2024-11-22 21:49:56,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:56,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023773243] [2024-11-22 21:49:56,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:56,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:56,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023773243] [2024-11-22 21:49:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023773243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:56,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113389268] [2024-11-22 21:49:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:56,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:56,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:56,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:49:56,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:49:56,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:56,975 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:49:56,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:49:57,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:57,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:49:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:57,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113389268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:49:57,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:49:57,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-22 21:49:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166260460] [2024-11-22 21:49:57,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:49:57,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:49:57,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:57,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:49:57,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:49:57,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:49:57,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:57,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:57,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:49:57,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:57,642 INFO L124 PetriNetUnfolderBase]: 620/1055 cut-off events. [2024-11-22 21:49:57,643 INFO L125 PetriNetUnfolderBase]: For 383/391 co-relation queries the response was YES. [2024-11-22 21:49:57,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2457 conditions, 1055 events. 620/1055 cut-off events. For 383/391 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4387 event pairs, 108 based on Foata normal form. 40/1078 useless extension candidates. Maximal degree in co-relation 1652. Up to 353 conditions per place. [2024-11-22 21:49:57,647 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 48 selfloop transitions, 9 changer transitions 32/96 dead transitions. [2024-11-22 21:49:57,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 96 transitions, 442 flow [2024-11-22 21:49:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:49:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 21:49:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 256 transitions. [2024-11-22 21:49:57,649 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4749536178107607 [2024-11-22 21:49:57,649 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 119 flow. Second operand 11 states and 256 transitions. [2024-11-22 21:49:57,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 96 transitions, 442 flow [2024-11-22 21:49:57,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 96 transitions, 415 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:57,653 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 118 flow [2024-11-22 21:49:57,654 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2024-11-22 21:49:57,654 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-11-22 21:49:57,655 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 118 flow [2024-11-22 21:49:57,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 17.666666666666668) internal successors, (212), 12 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:57,655 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:57,656 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:57,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:49:57,858 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,SelfDestructingSolverStorable7 [2024-11-22 21:49:57,859 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:57,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:57,859 INFO L85 PathProgramCache]: Analyzing trace with hash -74262782, now seen corresponding path program 1 times [2024-11-22 21:49:57,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:57,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289138407] [2024-11-22 21:49:57,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:57,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:57,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:49:57,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:57,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289138407] [2024-11-22 21:49:57,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289138407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:57,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:57,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:49:57,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085250055] [2024-11-22 21:49:57,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:57,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:49:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:49:57,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:49:57,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-11-22 21:49:57,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-11-22 21:49:57,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:57,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-11-22 21:49:57,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:57,988 INFO L124 PetriNetUnfolderBase]: 224/412 cut-off events. [2024-11-22 21:49:57,989 INFO L125 PetriNetUnfolderBase]: For 147/150 co-relation queries the response was YES. [2024-11-22 21:49:57,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 412 events. 224/412 cut-off events. For 147/150 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1438 event pairs, 56 based on Foata normal form. 29/429 useless extension candidates. Maximal degree in co-relation 889. Up to 146 conditions per place. [2024-11-22 21:49:57,990 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 44 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-11-22 21:49:57,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 57 transitions, 254 flow [2024-11-22 21:49:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:49:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:49:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-11-22 21:49:57,991 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5816326530612245 [2024-11-22 21:49:57,991 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 118 flow. Second operand 4 states and 114 transitions. [2024-11-22 21:49:57,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 57 transitions, 254 flow [2024-11-22 21:49:57,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-22 21:49:57,993 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 120 flow [2024-11-22 21:49:57,993 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2024-11-22 21:49:57,994 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-22 21:49:57,994 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 120 flow [2024-11-22 21:49:57,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 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) [2024-11-22 21:49:57,995 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:57,995 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:49:57,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:49:57,995 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:57,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:57,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1018514616, now seen corresponding path program 1 times [2024-11-22 21:49:57,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:57,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760896969] [2024-11-22 21:49:57,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:57,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:49:58,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:58,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760896969] [2024-11-22 21:49:58,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760896969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:49:58,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:49:58,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:49:58,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647892471] [2024-11-22 21:49:58,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:49:58,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:49:58,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:49:58,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:49:58,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:49:58,083 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:49:58,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:58,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:49:58,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:49:58,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:49:58,194 INFO L124 PetriNetUnfolderBase]: 240/419 cut-off events. [2024-11-22 21:49:58,194 INFO L125 PetriNetUnfolderBase]: For 209/214 co-relation queries the response was YES. [2024-11-22 21:49:58,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 419 events. 240/419 cut-off events. For 209/214 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1381 event pairs, 54 based on Foata normal form. 4/411 useless extension candidates. Maximal degree in co-relation 994. Up to 195 conditions per place. [2024-11-22 21:49:58,214 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 50 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2024-11-22 21:49:58,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 60 transitions, 274 flow [2024-11-22 21:49:58,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:49:58,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:49:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-11-22 21:49:58,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49387755102040815 [2024-11-22 21:49:58,216 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 120 flow. Second operand 5 states and 121 transitions. [2024-11-22 21:49:58,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 60 transitions, 274 flow [2024-11-22 21:49:58,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 60 transitions, 264 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-22 21:49:58,217 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 116 flow [2024-11-22 21:49:58,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-11-22 21:49:58,217 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-11-22 21:49:58,217 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 116 flow [2024-11-22 21:49:58,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:49:58,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:49:58,218 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:49:58,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:49:58,218 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:49:58,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:49:58,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1670280078, now seen corresponding path program 1 times [2024-11-22 21:49:58,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:49:58,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510038369] [2024-11-22 21:49:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:58,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:49:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:49:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:49:59,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:49:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510038369] [2024-11-22 21:49:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510038369] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:49:59,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22748892] [2024-11-22 21:49:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:49:59,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:49:59,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:49:59,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:49:59,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:50:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:00,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-22 21:50:00,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:00,055 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 25 treesize of output 1 [2024-11-22 21:50:00,094 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 [2024-11-22 21:50:00,594 INFO L349 Elim1Store]: treesize reduction 34, result has 17.1 percent of original size [2024-11-22 21:50:00,594 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 71 treesize of output 41 [2024-11-22 21:50:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:00,621 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:01,754 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 113 treesize of output 105 [2024-11-22 21:50:01,803 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-22 21:50:01,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 582 treesize of output 542 [2024-11-22 21:50:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22748892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:04,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:04,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 35 [2024-11-22 21:50:04,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747526862] [2024-11-22 21:50:04,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:04,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 21:50:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:04,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 21:50:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1085, Unknown=0, NotChecked=0, Total=1260 [2024-11-22 21:50:05,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:05,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 116 flow. Second operand has 36 states, 36 states have (on average 16.25) internal successors, (585), 36 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:05,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:05,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:05,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:08,672 INFO L124 PetriNetUnfolderBase]: 1440/2522 cut-off events. [2024-11-22 21:50:08,672 INFO L125 PetriNetUnfolderBase]: For 1422/1422 co-relation queries the response was YES. [2024-11-22 21:50:08,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6126 conditions, 2522 events. 1440/2522 cut-off events. For 1422/1422 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14115 event pairs, 417 based on Foata normal form. 1/2517 useless extension candidates. Maximal degree in co-relation 4778. Up to 521 conditions per place. [2024-11-22 21:50:08,682 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 163 selfloop transitions, 42 changer transitions 30/239 dead transitions. [2024-11-22 21:50:08,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1177 flow [2024-11-22 21:50:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 21:50:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-11-22 21:50:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 582 transitions. [2024-11-22 21:50:08,684 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4751020408163265 [2024-11-22 21:50:08,684 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 116 flow. Second operand 25 states and 582 transitions. [2024-11-22 21:50:08,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1177 flow [2024-11-22 21:50:08,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 239 transitions, 1110 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-11-22 21:50:08,688 INFO L231 Difference]: Finished difference. Result has 84 places, 79 transitions, 440 flow [2024-11-22 21:50:08,688 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=440, PETRI_PLACES=84, PETRI_TRANSITIONS=79} [2024-11-22 21:50:08,689 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-22 21:50:08,689 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 79 transitions, 440 flow [2024-11-22 21:50:08,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 16.25) internal successors, (585), 36 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:08,689 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:08,689 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:08,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:50:08,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:08,894 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:08,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:08,895 INFO L85 PathProgramCache]: Analyzing trace with hash 670908598, now seen corresponding path program 2 times [2024-11-22 21:50:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336941390] [2024-11-22 21:50:08,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:08,924 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 21:50:08,924 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:09,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336941390] [2024-11-22 21:50:09,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336941390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:09,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 21:50:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654454733] [2024-11-22 21:50:09,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:09,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:50:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:09,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:50:09,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:50:09,290 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:09,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 79 transitions, 440 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:09,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:09,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:09,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:09,739 INFO L124 PetriNetUnfolderBase]: 1956/3387 cut-off events. [2024-11-22 21:50:09,739 INFO L125 PetriNetUnfolderBase]: For 5174/5192 co-relation queries the response was YES. [2024-11-22 21:50:09,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9906 conditions, 3387 events. 1956/3387 cut-off events. For 5174/5192 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20145 event pairs, 469 based on Foata normal form. 20/3406 useless extension candidates. Maximal degree in co-relation 9869. Up to 1699 conditions per place. [2024-11-22 21:50:09,761 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 104 selfloop transitions, 33 changer transitions 24/165 dead transitions. [2024-11-22 21:50:09,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 165 transitions, 1135 flow [2024-11-22 21:50:09,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:50:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:50:09,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-11-22 21:50:09,762 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5124716553287982 [2024-11-22 21:50:09,762 INFO L175 Difference]: Start difference. First operand has 84 places, 79 transitions, 440 flow. Second operand 9 states and 226 transitions. [2024-11-22 21:50:09,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 165 transitions, 1135 flow [2024-11-22 21:50:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 165 transitions, 1113 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-11-22 21:50:09,774 INFO L231 Difference]: Finished difference. Result has 87 places, 103 transitions, 758 flow [2024-11-22 21:50:09,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=758, PETRI_PLACES=87, PETRI_TRANSITIONS=103} [2024-11-22 21:50:09,776 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 35 predicate places. [2024-11-22 21:50:09,776 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 103 transitions, 758 flow [2024-11-22 21:50:09,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:09,777 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:09,777 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:09,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:50:09,777 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:09,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:09,777 INFO L85 PathProgramCache]: Analyzing trace with hash 364972806, now seen corresponding path program 3 times [2024-11-22 21:50:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178498137] [2024-11-22 21:50:09,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:50:09,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:09,803 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 21:50:09,806 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:10,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178498137] [2024-11-22 21:50:10,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178498137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:10,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 21:50:10,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915071374] [2024-11-22 21:50:10,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:10,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:50:10,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:10,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:50:10,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:50:10,130 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:10,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 103 transitions, 758 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:10,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:10,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:10,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:10,584 INFO L124 PetriNetUnfolderBase]: 2093/3610 cut-off events. [2024-11-22 21:50:10,584 INFO L125 PetriNetUnfolderBase]: For 8562/8567 co-relation queries the response was YES. [2024-11-22 21:50:10,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11740 conditions, 3610 events. 2093/3610 cut-off events. For 8562/8567 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21869 event pairs, 528 based on Foata normal form. 6/3612 useless extension candidates. Maximal degree in co-relation 11703. Up to 1690 conditions per place. [2024-11-22 21:50:10,600 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 105 selfloop transitions, 38 changer transitions 24/171 dead transitions. [2024-11-22 21:50:10,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 171 transitions, 1393 flow [2024-11-22 21:50:10,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:50:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:50:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-11-22 21:50:10,602 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2024-11-22 21:50:10,602 INFO L175 Difference]: Start difference. First operand has 87 places, 103 transitions, 758 flow. Second operand 9 states and 225 transitions. [2024-11-22 21:50:10,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 171 transitions, 1393 flow [2024-11-22 21:50:10,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 171 transitions, 1347 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-22 21:50:10,626 INFO L231 Difference]: Finished difference. Result has 96 places, 111 transitions, 959 flow [2024-11-22 21:50:10,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=959, PETRI_PLACES=96, PETRI_TRANSITIONS=111} [2024-11-22 21:50:10,627 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 44 predicate places. [2024-11-22 21:50:10,627 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 111 transitions, 959 flow [2024-11-22 21:50:10,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:10,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:10,628 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:10,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:50:10,628 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:10,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1856225148, now seen corresponding path program 4 times [2024-11-22 21:50:10,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801875788] [2024-11-22 21:50:10,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:10,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:10,666 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:10,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:11,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:11,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801875788] [2024-11-22 21:50:11,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801875788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:11,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363853736] [2024-11-22 21:50:11,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 21:50:11,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:11,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:11,559 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) [2024-11-22 21:50:11,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:50:11,618 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 21:50:11,618 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:11,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 21:50:11,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:11,654 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 25 treesize of output 1 [2024-11-22 21:50:11,689 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 [2024-11-22 21:50:11,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:11,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:12,890 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 114 treesize of output 106 [2024-11-22 21:50:12,925 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 21:50:12,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 737 treesize of output 643 [2024-11-22 21:50:13,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:13,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363853736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:13,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:13,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-11-22 21:50:13,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546928127] [2024-11-22 21:50:13,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:13,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 21:50:13,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:13,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 21:50:13,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=980, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 21:50:14,360 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:14,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 111 transitions, 959 flow. Second operand has 34 states, 34 states have (on average 16.38235294117647) internal successors, (557), 34 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:14,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:14,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:14,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:16,583 INFO L124 PetriNetUnfolderBase]: 3040/5162 cut-off events. [2024-11-22 21:50:16,583 INFO L125 PetriNetUnfolderBase]: For 17010/17044 co-relation queries the response was YES. [2024-11-22 21:50:16,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18528 conditions, 5162 events. 3040/5162 cut-off events. For 17010/17044 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32618 event pairs, 845 based on Foata normal form. 36/5197 useless extension candidates. Maximal degree in co-relation 18486. Up to 1880 conditions per place. [2024-11-22 21:50:16,607 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 199 selfloop transitions, 79 changer transitions 57/339 dead transitions. [2024-11-22 21:50:16,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 339 transitions, 2733 flow [2024-11-22 21:50:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 21:50:16,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-22 21:50:16,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 687 transitions. [2024-11-22 21:50:16,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4673469387755102 [2024-11-22 21:50:16,610 INFO L175 Difference]: Start difference. First operand has 96 places, 111 transitions, 959 flow. Second operand 30 states and 687 transitions. [2024-11-22 21:50:16,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 339 transitions, 2733 flow [2024-11-22 21:50:16,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 339 transitions, 2658 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-11-22 21:50:16,649 INFO L231 Difference]: Finished difference. Result has 131 places, 155 transitions, 1657 flow [2024-11-22 21:50:16,649 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1657, PETRI_PLACES=131, PETRI_TRANSITIONS=155} [2024-11-22 21:50:16,649 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 79 predicate places. [2024-11-22 21:50:16,649 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 155 transitions, 1657 flow [2024-11-22 21:50:16,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.38235294117647) internal successors, (557), 34 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:16,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:16,650 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:16,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:50:16,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:16,851 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:16,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1290205254, now seen corresponding path program 5 times [2024-11-22 21:50:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774128211] [2024-11-22 21:50:16,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:16,878 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:50:16,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:18,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:18,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774128211] [2024-11-22 21:50:18,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774128211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:18,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757034377] [2024-11-22 21:50:18,062 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 21:50:18,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:18,065 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) [2024-11-22 21:50:18,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:50:18,138 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-22 21:50:18,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:18,139 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 21:50:18,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:18,201 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 15 treesize of output 1 [2024-11-22 21:50:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:18,593 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:19,137 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 82 treesize of output 74 [2024-11-22 21:50:19,167 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 21:50:19,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 141 treesize of output 125 [2024-11-22 21:50:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:19,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757034377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:19,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:19,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2024-11-22 21:50:19,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321006050] [2024-11-22 21:50:19,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:19,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 21:50:19,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 21:50:19,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 21:50:20,229 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:20,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 155 transitions, 1657 flow. Second operand has 34 states, 34 states have (on average 16.38235294117647) internal successors, (557), 34 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:20,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:20,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:20,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:23,353 INFO L124 PetriNetUnfolderBase]: 3709/6320 cut-off events. [2024-11-22 21:50:23,353 INFO L125 PetriNetUnfolderBase]: For 30100/30126 co-relation queries the response was YES. [2024-11-22 21:50:23,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23855 conditions, 6320 events. 3709/6320 cut-off events. For 30100/30126 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 41129 event pairs, 1065 based on Foata normal form. 28/6347 useless extension candidates. Maximal degree in co-relation 23785. Up to 1389 conditions per place. [2024-11-22 21:50:23,385 INFO L140 encePairwiseOnDemand]: 34/49 looper letters, 225 selfloop transitions, 93 changer transitions 46/368 dead transitions. [2024-11-22 21:50:23,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 368 transitions, 3398 flow [2024-11-22 21:50:23,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-22 21:50:23,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-22 21:50:23,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 689 transitions. [2024-11-22 21:50:23,388 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46870748299319726 [2024-11-22 21:50:23,388 INFO L175 Difference]: Start difference. First operand has 131 places, 155 transitions, 1657 flow. Second operand 30 states and 689 transitions. [2024-11-22 21:50:23,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 368 transitions, 3398 flow [2024-11-22 21:50:23,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 368 transitions, 3271 flow, removed 60 selfloop flow, removed 11 redundant places. [2024-11-22 21:50:23,478 INFO L231 Difference]: Finished difference. Result has 152 places, 174 transitions, 2119 flow [2024-11-22 21:50:23,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2119, PETRI_PLACES=152, PETRI_TRANSITIONS=174} [2024-11-22 21:50:23,479 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 100 predicate places. [2024-11-22 21:50:23,479 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 174 transitions, 2119 flow [2024-11-22 21:50:23,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 16.38235294117647) internal successors, (557), 34 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:23,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:23,480 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:23,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:50:23,680 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,SelfDestructingSolverStorable14 [2024-11-22 21:50:23,681 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:23,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:23,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1257645933, now seen corresponding path program 6 times [2024-11-22 21:50:23,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508055325] [2024-11-22 21:50:23,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 21:50:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:23,711 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 21:50:23,711 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:23,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:50:23,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:23,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508055325] [2024-11-22 21:50:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508055325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:23,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 21:50:23,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919487210] [2024-11-22 21:50:23,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:23,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:50:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:23,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:50:23,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:50:23,980 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:23,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 174 transitions, 2119 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:23,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:23,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:23,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:24,822 INFO L124 PetriNetUnfolderBase]: 3739/6357 cut-off events. [2024-11-22 21:50:24,822 INFO L125 PetriNetUnfolderBase]: For 36054/36054 co-relation queries the response was YES. [2024-11-22 21:50:24,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24956 conditions, 6357 events. 3739/6357 cut-off events. For 36054/36054 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 41452 event pairs, 1135 based on Foata normal form. 1/6354 useless extension candidates. Maximal degree in co-relation 24882. Up to 3088 conditions per place. [2024-11-22 21:50:24,854 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 135 selfloop transitions, 80 changer transitions 23/242 dead transitions. [2024-11-22 21:50:24,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 242 transitions, 2926 flow [2024-11-22 21:50:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:50:24,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:50:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-11-22 21:50:24,855 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5147392290249433 [2024-11-22 21:50:24,855 INFO L175 Difference]: Start difference. First operand has 152 places, 174 transitions, 2119 flow. Second operand 9 states and 227 transitions. [2024-11-22 21:50:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 242 transitions, 2926 flow [2024-11-22 21:50:24,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 242 transitions, 2859 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-11-22 21:50:24,976 INFO L231 Difference]: Finished difference. Result has 146 places, 186 transitions, 2474 flow [2024-11-22 21:50:24,976 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2474, PETRI_PLACES=146, PETRI_TRANSITIONS=186} [2024-11-22 21:50:24,977 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-11-22 21:50:24,977 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 186 transitions, 2474 flow [2024-11-22 21:50:24,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:24,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:24,977 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:50:24,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:50:24,978 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:24,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:24,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1342176749, now seen corresponding path program 7 times [2024-11-22 21:50:24,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:24,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545175023] [2024-11-22 21:50:24,978 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:50:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545175023] [2024-11-22 21:50:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545175023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267478440] [2024-11-22 21:50:26,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 21:50:26,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:26,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:26,369 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) [2024-11-22 21:50:26,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:50:26,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:26,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-22 21:50:26,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:26,650 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:26,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:50:26,806 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 58 treesize of output 60 [2024-11-22 21:50:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-22 21:50:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267478440] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:50:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14, 9] total 28 [2024-11-22 21:50:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836973800] [2024-11-22 21:50:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:26,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 21:50:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:26,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 21:50:26,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2024-11-22 21:50:27,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-11-22 21:50:27,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 186 transitions, 2474 flow. Second operand has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:27,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:27,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-11-22 21:50:27,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:27,890 INFO L124 PetriNetUnfolderBase]: 3786/6455 cut-off events. [2024-11-22 21:50:27,890 INFO L125 PetriNetUnfolderBase]: For 44339/44344 co-relation queries the response was YES. [2024-11-22 21:50:27,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26810 conditions, 6455 events. 3786/6455 cut-off events. For 44339/44344 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 42136 event pairs, 1054 based on Foata normal form. 5/6458 useless extension candidates. Maximal degree in co-relation 26742. Up to 2212 conditions per place. [2024-11-22 21:50:27,919 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 128 selfloop transitions, 85 changer transitions 24/241 dead transitions. [2024-11-22 21:50:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 241 transitions, 3151 flow [2024-11-22 21:50:27,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:50:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 21:50:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 223 transitions. [2024-11-22 21:50:27,922 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5056689342403629 [2024-11-22 21:50:27,922 INFO L175 Difference]: Start difference. First operand has 146 places, 186 transitions, 2474 flow. Second operand 9 states and 223 transitions. [2024-11-22 21:50:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 241 transitions, 3151 flow [2024-11-22 21:50:28,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 241 transitions, 3004 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 21:50:28,047 INFO L231 Difference]: Finished difference. Result has 149 places, 187 transitions, 2565 flow [2024-11-22 21:50:28,048 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2565, PETRI_PLACES=149, PETRI_TRANSITIONS=187} [2024-11-22 21:50:28,048 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 97 predicate places. [2024-11-22 21:50:28,048 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 187 transitions, 2565 flow [2024-11-22 21:50:28,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.77777777777778) internal successors, (151), 9 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:28,049 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:28,049 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:28,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 21:50:28,253 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,SelfDestructingSolverStorable16 [2024-11-22 21:50:28,254 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:28,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:28,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1901772928, now seen corresponding path program 1 times [2024-11-22 21:50:28,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:28,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555069881] [2024-11-22 21:50:28,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:28,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:28,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555069881] [2024-11-22 21:50:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555069881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:50:28,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626605701] [2024-11-22 21:50:28,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:28,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:50:28,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:50:28,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:50:28,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:50:28,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 187 transitions, 2565 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:28,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:28,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:50:28,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:29,352 INFO L124 PetriNetUnfolderBase]: 5148/8632 cut-off events. [2024-11-22 21:50:29,352 INFO L125 PetriNetUnfolderBase]: For 63604/63613 co-relation queries the response was YES. [2024-11-22 21:50:29,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34504 conditions, 8632 events. 5148/8632 cut-off events. For 63604/63613 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58479 event pairs, 2472 based on Foata normal form. 1/7525 useless extension candidates. Maximal degree in co-relation 34435. Up to 5666 conditions per place. [2024-11-22 21:50:29,410 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 185 selfloop transitions, 26 changer transitions 9/270 dead transitions. [2024-11-22 21:50:29,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 270 transitions, 4212 flow [2024-11-22 21:50:29,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:50:29,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:50:29,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-11-22 21:50:29,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5591836734693878 [2024-11-22 21:50:29,412 INFO L175 Difference]: Start difference. First operand has 149 places, 187 transitions, 2565 flow. Second operand 5 states and 137 transitions. [2024-11-22 21:50:29,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 270 transitions, 4212 flow [2024-11-22 21:50:29,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 270 transitions, 3980 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-22 21:50:29,725 INFO L231 Difference]: Finished difference. Result has 146 places, 203 transitions, 2712 flow [2024-11-22 21:50:29,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2712, PETRI_PLACES=146, PETRI_TRANSITIONS=203} [2024-11-22 21:50:29,726 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 94 predicate places. [2024-11-22 21:50:29,726 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 203 transitions, 2712 flow [2024-11-22 21:50:29,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:29,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:29,727 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:29,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:50:29,727 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:29,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1757959043, now seen corresponding path program 1 times [2024-11-22 21:50:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554719735] [2024-11-22 21:50:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:29,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:29,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554719735] [2024-11-22 21:50:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554719735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:29,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:50:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239828474] [2024-11-22 21:50:29,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:29,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:50:29,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:50:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:50:29,809 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:50:29,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 203 transitions, 2712 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:29,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:29,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:50:29,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:30,898 INFO L124 PetriNetUnfolderBase]: 5432/9233 cut-off events. [2024-11-22 21:50:30,898 INFO L125 PetriNetUnfolderBase]: For 62627/62669 co-relation queries the response was YES. [2024-11-22 21:50:30,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40249 conditions, 9233 events. 5432/9233 cut-off events. For 62627/62669 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 64231 event pairs, 2549 based on Foata normal form. 151/9241 useless extension candidates. Maximal degree in co-relation 39337. Up to 6159 conditions per place. [2024-11-22 21:50:30,950 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 184 selfloop transitions, 40 changer transitions 10/284 dead transitions. [2024-11-22 21:50:30,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 284 transitions, 4358 flow [2024-11-22 21:50:30,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:50:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 21:50:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-11-22 21:50:30,951 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5510204081632653 [2024-11-22 21:50:30,952 INFO L175 Difference]: Start difference. First operand has 146 places, 203 transitions, 2712 flow. Second operand 5 states and 135 transitions. [2024-11-22 21:50:30,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 284 transitions, 4358 flow [2024-11-22 21:50:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 284 transitions, 4358 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-22 21:50:31,567 INFO L231 Difference]: Finished difference. Result has 153 places, 217 transitions, 3012 flow [2024-11-22 21:50:31,568 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3012, PETRI_PLACES=153, PETRI_TRANSITIONS=217} [2024-11-22 21:50:31,568 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2024-11-22 21:50:31,568 INFO L471 AbstractCegarLoop]: Abstraction has has 153 places, 217 transitions, 3012 flow [2024-11-22 21:50:31,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:31,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:31,569 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:31,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:50:31,569 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:31,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1032530871, now seen corresponding path program 2 times [2024-11-22 21:50:31,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:31,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636520755] [2024-11-22 21:50:31,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:31,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:31,584 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:31,584 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636520755] [2024-11-22 21:50:31,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636520755] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6709079] [2024-11-22 21:50:31,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:31,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:31,745 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) [2024-11-22 21:50:31,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:50:31,815 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:31,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:31,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-22 21:50:31,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:31,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:31,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 21:50:31,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6709079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:31,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 21:50:31,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2024-11-22 21:50:31,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201210497] [2024-11-22 21:50:31,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:31,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:50:31,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:50:31,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:50:31,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:50:31,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 217 transitions, 3012 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:31,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:31,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:50:31,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:33,091 INFO L124 PetriNetUnfolderBase]: 5691/9839 cut-off events. [2024-11-22 21:50:33,092 INFO L125 PetriNetUnfolderBase]: For 73418/73452 co-relation queries the response was YES. [2024-11-22 21:50:33,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47247 conditions, 9839 events. 5691/9839 cut-off events. For 73418/73452 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 70000 event pairs, 941 based on Foata normal form. 155/9938 useless extension candidates. Maximal degree in co-relation 46096. Up to 4768 conditions per place. [2024-11-22 21:50:33,162 INFO L140 encePairwiseOnDemand]: 41/49 looper letters, 229 selfloop transitions, 50 changer transitions 10/339 dead transitions. [2024-11-22 21:50:33,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 339 transitions, 5410 flow [2024-11-22 21:50:33,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 21:50:33,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-22 21:50:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-11-22 21:50:33,163 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5626822157434402 [2024-11-22 21:50:33,163 INFO L175 Difference]: Start difference. First operand has 153 places, 217 transitions, 3012 flow. Second operand 7 states and 193 transitions. [2024-11-22 21:50:33,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 339 transitions, 5410 flow [2024-11-22 21:50:33,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 339 transitions, 5408 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-22 21:50:33,692 INFO L231 Difference]: Finished difference. Result has 163 places, 228 transitions, 3351 flow [2024-11-22 21:50:33,693 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3351, PETRI_PLACES=163, PETRI_TRANSITIONS=228} [2024-11-22 21:50:33,693 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 111 predicate places. [2024-11-22 21:50:33,694 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 228 transitions, 3351 flow [2024-11-22 21:50:33,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:50:33,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:33,694 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:33,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 21:50:33,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:33,895 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:33,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:33,896 INFO L85 PathProgramCache]: Analyzing trace with hash -70402742, now seen corresponding path program 2 times [2024-11-22 21:50:33,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:33,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499798352] [2024-11-22 21:50:33,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 21:50:33,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:33,920 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-22 21:50:33,920 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:33,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:33,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:33,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499798352] [2024-11-22 21:50:33,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499798352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:33,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:33,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:50:33,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985568472] [2024-11-22 21:50:33,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:33,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:50:33,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:50:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:50:33,970 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:50:33,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 228 transitions, 3351 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) [2024-11-22 21:50:33,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:33,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:50:33,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:35,176 INFO L124 PetriNetUnfolderBase]: 4825/8301 cut-off events. [2024-11-22 21:50:35,176 INFO L125 PetriNetUnfolderBase]: For 72929/72995 co-relation queries the response was YES. [2024-11-22 21:50:35,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42734 conditions, 8301 events. 4825/8301 cut-off events. For 72929/72995 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 56677 event pairs, 1699 based on Foata normal form. 105/8305 useless extension candidates. Maximal degree in co-relation 42019. Up to 4484 conditions per place. [2024-11-22 21:50:35,232 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 157 selfloop transitions, 34 changer transitions 28/261 dead transitions. [2024-11-22 21:50:35,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 261 transitions, 4262 flow [2024-11-22 21:50:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:50:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:50:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-22 21:50:35,234 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5969387755102041 [2024-11-22 21:50:35,234 INFO L175 Difference]: Start difference. First operand has 163 places, 228 transitions, 3351 flow. Second operand 4 states and 117 transitions. [2024-11-22 21:50:35,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 261 transitions, 4262 flow [2024-11-22 21:50:35,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 261 transitions, 4173 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-11-22 21:50:35,627 INFO L231 Difference]: Finished difference. Result has 160 places, 198 transitions, 2865 flow [2024-11-22 21:50:35,627 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=3092, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2865, PETRI_PLACES=160, PETRI_TRANSITIONS=198} [2024-11-22 21:50:35,627 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 108 predicate places. [2024-11-22 21:50:35,627 INFO L471 AbstractCegarLoop]: Abstraction has has 160 places, 198 transitions, 2865 flow [2024-11-22 21:50:35,628 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) [2024-11-22 21:50:35,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:35,628 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:35,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 21:50:35,628 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:35,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash 369427405, now seen corresponding path program 3 times [2024-11-22 21:50:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:35,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723691261] [2024-11-22 21:50:35,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 21:50:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:35,639 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 21:50:35,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 21:50:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 21:50:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723691261] [2024-11-22 21:50:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723691261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:50:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:50:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:50:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675114972] [2024-11-22 21:50:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:50:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:50:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:50:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:50:35,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-11-22 21:50:35,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 198 transitions, 2865 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) [2024-11-22 21:50:35,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:50:35,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-11-22 21:50:35,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 21:50:36,580 INFO L124 PetriNetUnfolderBase]: 3894/6726 cut-off events. [2024-11-22 21:50:36,580 INFO L125 PetriNetUnfolderBase]: For 54733/54789 co-relation queries the response was YES. [2024-11-22 21:50:36,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34100 conditions, 6726 events. 3894/6726 cut-off events. For 54733/54789 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 44143 event pairs, 1112 based on Foata normal form. 94/6720 useless extension candidates. Maximal degree in co-relation 33788. Up to 3180 conditions per place. [2024-11-22 21:50:36,635 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 139 selfloop transitions, 22 changer transitions 26/221 dead transitions. [2024-11-22 21:50:36,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 221 transitions, 3414 flow [2024-11-22 21:50:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:50:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 21:50:36,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-22 21:50:36,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6122448979591837 [2024-11-22 21:50:36,636 INFO L175 Difference]: Start difference. First operand has 160 places, 198 transitions, 2865 flow. Second operand 4 states and 120 transitions. [2024-11-22 21:50:36,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 221 transitions, 3414 flow [2024-11-22 21:50:36,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 221 transitions, 3221 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-11-22 21:50:36,891 INFO L231 Difference]: Finished difference. Result has 147 places, 164 transitions, 2161 flow [2024-11-22 21:50:36,891 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2161, PETRI_PLACES=147, PETRI_TRANSITIONS=164} [2024-11-22 21:50:36,892 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 95 predicate places. [2024-11-22 21:50:36,892 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 164 transitions, 2161 flow [2024-11-22 21:50:36,892 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) [2024-11-22 21:50:36,892 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 21:50:36,892 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-22 21:50:36,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 21:50:36,892 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-11-22 21:50:36,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:50:36,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1168645651, now seen corresponding path program 1 times [2024-11-22 21:50:36,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:50:36,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499834240] [2024-11-22 21:50:36,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:36,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:50:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:37,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:50:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499834240] [2024-11-22 21:50:37,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499834240] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:50:37,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688037495] [2024-11-22 21:50:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:50:37,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:50:37,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:50:37,802 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) [2024-11-22 21:50:37,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:50:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:50:37,917 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-22 21:50:37,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:50:37,972 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 25 treesize of output 1 [2024-11-22 21:50:38,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 21 [2024-11-22 21:50:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:38,934 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:50:48,286 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 112 treesize of output 104 [2024-11-22 21:50:48,325 INFO L349 Elim1Store]: treesize reduction 13, result has 64.9 percent of original size [2024-11-22 21:50:48,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1306 treesize of output 1121 [2024-11-22 21:50:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:50:49,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688037495] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 21:50:49,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 21:50:49,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 43 [2024-11-22 21:50:49,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117810456] [2024-11-22 21:50:49,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 21:50:49,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-22 21:50:49,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:50:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-22 21:50:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1639, Unknown=2, NotChecked=0, Total=1892 [2024-11-22 21:50:53,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:50:57,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:51:01,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:51:06,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:51:10,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:51:14,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-22 21:51:14,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 49 [2024-11-22 21:51:14,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 164 transitions, 2161 flow. Second operand has 44 states, 44 states have (on average 10.113636363636363) internal successors, (445), 44 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:51:14,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 21:51:14,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 49 [2024-11-22 21:51:14,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand