./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-20 17:44:07,424 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 17:44:07,485 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 17:44:07,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 17:44:07,493 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 17:44:07,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 17:44:07,520 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 17:44:07,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 17:44:07,521 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 17:44:07,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 17:44:07,522 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 17:44:07,522 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 17:44:07,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 17:44:07,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 17:44:07,525 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 17:44:07,526 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 17:44:07,526 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 17:44:07,526 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 17:44:07,526 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 17:44:07,527 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 17:44:07,527 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 17:44:07,527 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 17:44:07,531 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 17:44:07,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 17:44:07,531 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 17:44:07,531 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 17:44:07,532 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 17:44:07,532 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 17:44:07,532 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 17:44:07,532 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 17:44:07,533 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 17:44:07,533 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 17:44:07,533 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 17:44:07,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:44:07,533 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 17:44:07,533 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 17:44:07,534 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 17:44:07,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 17:44:07,534 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 17:44:07,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 17:44:07,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 17:44:07,535 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 17:44:07,535 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-20 17:44:07,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 17:44:07,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 17:44:07,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 17:44:07,788 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 17:44:07,789 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 17:44:07,790 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-20 17:44:09,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 17:44:09,421 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 17:44:09,423 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-20 17:44:09,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a27e04fd/9db15d4a23dd419396b65a4ddbd57f0d/FLAGe3e71c64b [2024-11-20 17:44:09,455 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a27e04fd/9db15d4a23dd419396b65a4ddbd57f0d [2024-11-20 17:44:09,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 17:44:09,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 17:44:09,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 17:44:09,464 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 17:44:09,470 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 17:44:09,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:09,473 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295d6140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09, skipping insertion in model container [2024-11-20 17:44:09,474 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:09,501 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 17:44:09,863 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-20 17:44:09,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:44:09,879 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 17:44:09,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 17:44:09,942 INFO L204 MainTranslator]: Completed translation [2024-11-20 17:44:09,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09 WrapperNode [2024-11-20 17:44:09,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 17:44:09,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 17:44:09,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 17:44:09,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 17:44:09,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:09,961 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:09,994 INFO L138 Inliner]: procedures = 24, calls = 49, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 317 [2024-11-20 17:44:09,995 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 17:44:09,995 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 17:44:09,996 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 17:44:09,996 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 17:44:10,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,010 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,034 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-20 17:44:10,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,055 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,064 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 17:44:10,067 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 17:44:10,067 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 17:44:10,067 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 17:44:10,068 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (1/1) ... [2024-11-20 17:44:10,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 17:44:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:10,103 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) [2024-11-20 17:44:10,105 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 [2024-11-20 17:44:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 17:44:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-20 17:44:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-20 17:44:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-20 17:44:10,147 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 17:44:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-20 17:44:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-20 17:44:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 17:44:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 17:44:10,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 17:44:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 17:44:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 17:44:10,150 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-20 17:44:10,250 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 17:44:10,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 17:44:10,793 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-20 17:44:10,793 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 17:44:11,194 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 17:44:11,195 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-20 17:44:11,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:44:11 BoogieIcfgContainer [2024-11-20 17:44:11,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 17:44:11,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 17:44:11,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 17:44:11,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 17:44:11,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:44:09" (1/3) ... [2024-11-20 17:44:11,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44535467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:44:11, skipping insertion in model container [2024-11-20 17:44:11,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:09" (2/3) ... [2024-11-20 17:44:11,203 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44535467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:44:11, skipping insertion in model container [2024-11-20 17:44:11,203 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:44:11" (3/3) ... [2024-11-20 17:44:11,205 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-20 17:44:11,221 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 17:44:11,222 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-20 17:44:11,222 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-20 17:44:11,296 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-20 17:44:11,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 79 transitions, 179 flow [2024-11-20 17:44:11,377 INFO L124 PetriNetUnfolderBase]: 10/76 cut-off events. [2024-11-20 17:44:11,377 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-20 17:44:11,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 10/76 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 233 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 57. Up to 3 conditions per place. [2024-11-20 17:44:11,382 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 79 transitions, 179 flow [2024-11-20 17:44:11,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 75 transitions, 168 flow [2024-11-20 17:44:11,393 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 17:44:11,400 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;@1de2a965, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 17:44:11,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-11-20 17:44:11,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-20 17:44:11,426 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-20 17:44:11,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-20 17:44:11,427 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:11,427 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:44:11,428 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:11,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:11,434 INFO L85 PathProgramCache]: Analyzing trace with hash 953146, now seen corresponding path program 1 times [2024-11-20 17:44:11,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:11,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812558786] [2024-11-20 17:44:11,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:11,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812558786] [2024-11-20 17:44:11,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812558786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:11,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:11,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-20 17:44:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722123875] [2024-11-20 17:44:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:11,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:44:11,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:44:11,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:44:11,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:11,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 75 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-20 17:44:11,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:11,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:11,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:12,958 INFO L124 PetriNetUnfolderBase]: 5875/9276 cut-off events. [2024-11-20 17:44:12,959 INFO L125 PetriNetUnfolderBase]: For 360/360 co-relation queries the response was YES. [2024-11-20 17:44:12,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17520 conditions, 9276 events. 5875/9276 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64273 event pairs, 5236 based on Foata normal form. 514/6128 useless extension candidates. Maximal degree in co-relation 16908. Up to 7878 conditions per place. [2024-11-20 17:44:13,049 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-20 17:44:13,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 68 transitions, 252 flow [2024-11-20 17:44:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:44:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:44:13,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-20 17:44:13,062 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5232067510548524 [2024-11-20 17:44:13,064 INFO L175 Difference]: Start difference. First operand has 75 places, 75 transitions, 168 flow. Second operand 3 states and 124 transitions. [2024-11-20 17:44:13,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 68 transitions, 252 flow [2024-11-20 17:44:13,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-20 17:44:13,079 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 146 flow [2024-11-20 17:44:13,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-11-20 17:44:13,086 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2024-11-20 17:44:13,087 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 146 flow [2024-11-20 17:44:13,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2024-11-20 17:44:13,087 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:13,087 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-20 17:44:13,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 17:44:13,088 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:13,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:13,089 INFO L85 PathProgramCache]: Analyzing trace with hash 953147, now seen corresponding path program 1 times [2024-11-20 17:44:13,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:13,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652551311] [2024-11-20 17:44:13,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:13,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:13,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:13,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652551311] [2024-11-20 17:44:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652551311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:13,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:13,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:44:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996364775] [2024-11-20 17:44:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:13,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:13,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:13,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:13,441 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:13,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:13,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:13,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:13,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:14,427 INFO L124 PetriNetUnfolderBase]: 5874/9277 cut-off events. [2024-11-20 17:44:14,428 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-20 17:44:14,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17302 conditions, 9277 events. 5874/9277 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64607 event pairs, 5234 based on Foata normal form. 0/5612 useless extension candidates. Maximal degree in co-relation 17265. Up to 7889 conditions per place. [2024-11-20 17:44:14,492 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 51 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-20 17:44:14,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 262 flow [2024-11-20 17:44:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:14,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:14,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2024-11-20 17:44:14,496 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46835443037974683 [2024-11-20 17:44:14,497 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 146 flow. Second operand 4 states and 148 transitions. [2024-11-20 17:44:14,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 262 flow [2024-11-20 17:44:14,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:14,500 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 169 flow [2024-11-20 17:44:14,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2024-11-20 17:44:14,501 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2024-11-20 17:44:14,501 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 169 flow [2024-11-20 17:44:14,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:14,501 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:14,501 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-20 17:44:14,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 17:44:14,502 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:14,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 29550665, now seen corresponding path program 1 times [2024-11-20 17:44:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:14,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372831793] [2024-11-20 17:44:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372831793] [2024-11-20 17:44:14,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372831793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891390201] [2024-11-20 17:44:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:14,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:44:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:44:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:44:14,736 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:14,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:14,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:14,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:14,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:15,734 INFO L124 PetriNetUnfolderBase]: 5875/9280 cut-off events. [2024-11-20 17:44:15,734 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-11-20 17:44:15,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17319 conditions, 9280 events. 5875/9280 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64572 event pairs, 5234 based on Foata normal form. 0/5614 useless extension candidates. Maximal degree in co-relation 17294. Up to 7888 conditions per place. [2024-11-20 17:44:15,795 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 51 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-11-20 17:44:15,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 291 flow [2024-11-20 17:44:15,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:15,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-11-20 17:44:15,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.44050632911392407 [2024-11-20 17:44:15,798 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 169 flow. Second operand 5 states and 174 transitions. [2024-11-20 17:44:15,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 291 flow [2024-11-20 17:44:15,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:44:15,801 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 203 flow [2024-11-20 17:44:15,802 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-11-20 17:44:15,803 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-20 17:44:15,803 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 203 flow [2024-11-20 17:44:15,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:15,804 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:15,804 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-20 17:44:15,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-20 17:44:15,804 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:15,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:15,805 INFO L85 PathProgramCache]: Analyzing trace with hash 916003893, now seen corresponding path program 1 times [2024-11-20 17:44:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:15,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416835993] [2024-11-20 17:44:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:16,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:16,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416835993] [2024-11-20 17:44:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416835993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:44:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30853273] [2024-11-20 17:44:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:16,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:16,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:16,009 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) [2024-11-20 17:44:16,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 17:44:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:16,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:44:16,087 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:44:16,148 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 [2024-11-20 17:44:16,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:16,366 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:44:16,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30853273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:44:16,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:44:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-20 17:44:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863364387] [2024-11-20 17:44:16,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:44:16,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-20 17:44:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:16,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-20 17:44:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-20 17:44:16,693 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:16,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 203 flow. Second operand has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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) [2024-11-20 17:44:16,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:16,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:16,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:17,820 INFO L124 PetriNetUnfolderBase]: 5875/9279 cut-off events. [2024-11-20 17:44:17,821 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-20 17:44:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17332 conditions, 9279 events. 5875/9279 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64597 event pairs, 5234 based on Foata normal form. 0/5616 useless extension candidates. Maximal degree in co-relation 17304. Up to 7888 conditions per place. [2024-11-20 17:44:17,873 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 50 selfloop transitions, 7 changer transitions 0/73 dead transitions. [2024-11-20 17:44:17,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 313 flow [2024-11-20 17:44:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 17:44:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-20 17:44:17,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-11-20 17:44:17,877 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40717299578059074 [2024-11-20 17:44:17,878 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 203 flow. Second operand 6 states and 193 transitions. [2024-11-20 17:44:17,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 313 flow [2024-11-20 17:44:17,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 73 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:44:17,881 INFO L231 Difference]: Finished difference. Result has 77 places, 73 transitions, 212 flow [2024-11-20 17:44:17,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=77, PETRI_TRANSITIONS=73} [2024-11-20 17:44:17,883 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-20 17:44:17,883 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 73 transitions, 212 flow [2024-11-20 17:44:17,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.363636363636363) internal successors, (268), 11 states have internal predecessors, (268), 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) [2024-11-20 17:44:17,884 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:17,884 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-20 17:44:17,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-20 17:44:18,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:18,090 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:18,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:18,091 INFO L85 PathProgramCache]: Analyzing trace with hash 916072257, now seen corresponding path program 1 times [2024-11-20 17:44:18,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:18,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263193747] [2024-11-20 17:44:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:18,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263193747] [2024-11-20 17:44:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263193747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:18,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:18,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:18,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588213474] [2024-11-20 17:44:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:18,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:44:18,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:44:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:44:18,283 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:18,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-20 17:44:18,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:18,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:18,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:19,134 INFO L124 PetriNetUnfolderBase]: 5876/9282 cut-off events. [2024-11-20 17:44:19,134 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-20 17:44:19,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17345 conditions, 9282 events. 5876/9282 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64553 event pairs, 5234 based on Foata normal form. 0/5618 useless extension candidates. Maximal degree in co-relation 17312. Up to 7890 conditions per place. [2024-11-20 17:44:19,201 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 51 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2024-11-20 17:44:19,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 76 transitions, 338 flow [2024-11-20 17:44:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:19,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:19,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-11-20 17:44:19,203 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379746835443038 [2024-11-20 17:44:19,203 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 212 flow. Second operand 5 states and 173 transitions. [2024-11-20 17:44:19,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 76 transitions, 338 flow [2024-11-20 17:44:19,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 76 transitions, 304 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-11-20 17:44:19,207 INFO L231 Difference]: Finished difference. Result has 75 places, 76 transitions, 221 flow [2024-11-20 17:44:19,207 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=221, PETRI_PLACES=75, PETRI_TRANSITIONS=76} [2024-11-20 17:44:19,208 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-20 17:44:19,208 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 76 transitions, 221 flow [2024-11-20 17:44:19,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-20 17:44:19,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:19,208 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-20 17:44:19,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 17:44:19,209 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:19,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:19,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1666550379, now seen corresponding path program 1 times [2024-11-20 17:44:19,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:19,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117546622] [2024-11-20 17:44:19,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:19,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:19,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:19,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117546622] [2024-11-20 17:44:19,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117546622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:44:19,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432289239] [2024-11-20 17:44:19,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:19,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:19,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:19,451 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) [2024-11-20 17:44:19,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 17:44:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:19,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-20 17:44:19,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:44:19,551 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 [2024-11-20 17:44:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:19,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:44:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432289239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:44:19,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:44:19,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-20 17:44:19,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966238940] [2024-11-20 17:44:19,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:44:19,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:44:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:44:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:44:20,097 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:20,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 221 flow. Second operand has 13 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 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) [2024-11-20 17:44:20,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:20,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:20,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:21,231 INFO L124 PetriNetUnfolderBase]: 5876/9281 cut-off events. [2024-11-20 17:44:21,232 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-20 17:44:21,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17343 conditions, 9281 events. 5876/9281 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64634 event pairs, 5234 based on Foata normal form. 0/5620 useless extension candidates. Maximal degree in co-relation 17301. Up to 7883 conditions per place. [2024-11-20 17:44:21,278 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 47 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2024-11-20 17:44:21,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 335 flow [2024-11-20 17:44:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:44:21,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:44:21,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-11-20 17:44:21,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39421338155515373 [2024-11-20 17:44:21,280 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 221 flow. Second operand 7 states and 218 transitions. [2024-11-20 17:44:21,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 335 flow [2024-11-20 17:44:21,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:21,287 INFO L231 Difference]: Finished difference. Result has 78 places, 75 transitions, 234 flow [2024-11-20 17:44:21,287 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=234, PETRI_PLACES=78, PETRI_TRANSITIONS=75} [2024-11-20 17:44:21,288 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-20 17:44:21,288 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 75 transitions, 234 flow [2024-11-20 17:44:21,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.307692307692307) internal successors, (316), 13 states have internal predecessors, (316), 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) [2024-11-20 17:44:21,288 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:21,288 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-20 17:44:21,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-20 17:44:21,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-20 17:44:21,490 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:21,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash -122826944, now seen corresponding path program 1 times [2024-11-20 17:44:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75537955] [2024-11-20 17:44:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:21,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:21,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75537955] [2024-11-20 17:44:21,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75537955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:44:21,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001827537] [2024-11-20 17:44:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:21,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:21,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:21,773 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) [2024-11-20 17:44:21,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 17:44:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:21,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 17:44:21,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:44:21,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-20 17:44:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:21,998 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:44:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:22,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001827537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:44:22,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:44:22,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-20 17:44:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996339703] [2024-11-20 17:44:22,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:44:22,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-20 17:44:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-20 17:44:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-20 17:44:22,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:22,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 75 transitions, 234 flow. Second operand has 13 states, 13 states have (on average 24.46153846153846) internal successors, (318), 13 states have internal predecessors, (318), 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) [2024-11-20 17:44:22,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:22,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:22,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:23,043 INFO L124 PetriNetUnfolderBase]: 5876/9280 cut-off events. [2024-11-20 17:44:23,044 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-11-20 17:44:23,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17348 conditions, 9280 events. 5876/9280 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 64640 event pairs, 5234 based on Foata normal form. 0/5620 useless extension candidates. Maximal degree in co-relation 17303. Up to 7882 conditions per place. [2024-11-20 17:44:23,099 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 43 selfloop transitions, 15 changer transitions 0/74 dead transitions. [2024-11-20 17:44:23,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 74 transitions, 346 flow [2024-11-20 17:44:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 17:44:23,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-20 17:44:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-11-20 17:44:23,101 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3924050632911392 [2024-11-20 17:44:23,101 INFO L175 Difference]: Start difference. First operand has 78 places, 75 transitions, 234 flow. Second operand 7 states and 217 transitions. [2024-11-20 17:44:23,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 74 transitions, 346 flow [2024-11-20 17:44:23,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 321 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-11-20 17:44:23,103 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 235 flow [2024-11-20 17:44:23,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=235, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-20 17:44:23,104 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-20 17:44:23,104 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 235 flow [2024-11-20 17:44:23,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 24.46153846153846) internal successors, (318), 13 states have internal predecessors, (318), 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) [2024-11-20 17:44:23,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:23,105 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:23,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-20 17:44:23,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:23,306 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:23,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash 491685523, now seen corresponding path program 1 times [2024-11-20 17:44:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:23,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487411881] [2024-11-20 17:44:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:23,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:23,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487411881] [2024-11-20 17:44:23,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487411881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:23,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:23,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:44:23,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919423700] [2024-11-20 17:44:23,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:23,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:23,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:23,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:23,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:23,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:23,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:23,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:23,960 INFO L124 PetriNetUnfolderBase]: 6078/9659 cut-off events. [2024-11-20 17:44:23,961 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-11-20 17:44:23,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18086 conditions, 9659 events. 6078/9659 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 66914 event pairs, 5421 based on Foata normal form. 99/6059 useless extension candidates. Maximal degree in co-relation 17303. Up to 7891 conditions per place. [2024-11-20 17:44:24,009 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 79 selfloop transitions, 7 changer transitions 1/103 dead transitions. [2024-11-20 17:44:24,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 516 flow [2024-11-20 17:44:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:24,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:24,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 218 transitions. [2024-11-20 17:44:24,011 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5518987341772152 [2024-11-20 17:44:24,011 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 235 flow. Second operand 5 states and 218 transitions. [2024-11-20 17:44:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 516 flow [2024-11-20 17:44:24,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 459 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-11-20 17:44:24,014 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 261 flow [2024-11-20 17:44:24,014 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=261, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2024-11-20 17:44:24,015 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-20 17:44:24,015 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 261 flow [2024-11-20 17:44:24,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:24,015 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:24,015 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:24,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-20 17:44:24,016 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:24,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -780566055, now seen corresponding path program 1 times [2024-11-20 17:44:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:24,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218426136] [2024-11-20 17:44:24,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:24,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:24,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:24,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218426136] [2024-11-20 17:44:24,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218426136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:24,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:24,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:44:24,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186395372] [2024-11-20 17:44:24,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:24,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:24,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:24,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:24,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:24,158 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-20 17:44:24,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-20 17:44:24,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:24,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-20 17:44:24,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:24,595 INFO L124 PetriNetUnfolderBase]: 5486/8702 cut-off events. [2024-11-20 17:44:24,595 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2024-11-20 17:44:24,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17232 conditions, 8702 events. 5486/8702 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 56880 event pairs, 4815 based on Foata normal form. 0/5755 useless extension candidates. Maximal degree in co-relation 16476. Up to 7296 conditions per place. [2024-11-20 17:44:24,622 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 55 selfloop transitions, 6 changer transitions 0/75 dead transitions. [2024-11-20 17:44:24,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 75 transitions, 373 flow [2024-11-20 17:44:24,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-20 17:44:24,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949367088607595 [2024-11-20 17:44:24,623 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 261 flow. Second operand 5 states and 156 transitions. [2024-11-20 17:44:24,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 75 transitions, 373 flow [2024-11-20 17:44:24,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 75 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:24,626 INFO L231 Difference]: Finished difference. Result has 77 places, 75 transitions, 258 flow [2024-11-20 17:44:24,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=77, PETRI_TRANSITIONS=75} [2024-11-20 17:44:24,627 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2024-11-20 17:44:24,627 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 75 transitions, 258 flow [2024-11-20 17:44:24,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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) [2024-11-20 17:44:24,627 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:24,628 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:24,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-20 17:44:24,628 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:24,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -780566054, now seen corresponding path program 1 times [2024-11-20 17:44:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047870479] [2024-11-20 17:44:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:24,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047870479] [2024-11-20 17:44:24,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047870479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:24,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:44:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793144397] [2024-11-20 17:44:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:24,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:44:24,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:24,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:44:24,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:44:24,942 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 79 [2024-11-20 17:44:24,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 75 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-20 17:44:24,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:24,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 79 [2024-11-20 17:44:24,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:25,325 INFO L124 PetriNetUnfolderBase]: 4465/7142 cut-off events. [2024-11-20 17:44:25,325 INFO L125 PetriNetUnfolderBase]: For 565/565 co-relation queries the response was YES. [2024-11-20 17:44:25,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13815 conditions, 7142 events. 4465/7142 cut-off events. For 565/565 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 45056 event pairs, 3896 based on Foata normal form. 0/4982 useless extension candidates. Maximal degree in co-relation 13023. Up to 5968 conditions per place. [2024-11-20 17:44:25,369 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 56 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-11-20 17:44:25,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 368 flow [2024-11-20 17:44:25,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:25,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:25,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 132 transitions. [2024-11-20 17:44:25,371 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4177215189873418 [2024-11-20 17:44:25,371 INFO L175 Difference]: Start difference. First operand has 77 places, 75 transitions, 258 flow. Second operand 4 states and 132 transitions. [2024-11-20 17:44:25,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 368 flow [2024-11-20 17:44:25,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 359 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:44:25,373 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 247 flow [2024-11-20 17:44:25,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-20 17:44:25,374 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-20 17:44:25,374 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 247 flow [2024-11-20 17:44:25,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 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) [2024-11-20 17:44:25,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:25,375 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:25,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 17:44:25,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:25,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:25,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1572256051, now seen corresponding path program 1 times [2024-11-20 17:44:25,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:25,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091414351] [2024-11-20 17:44:25,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:25,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:25,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091414351] [2024-11-20 17:44:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091414351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:25,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:25,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 17:44:25,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28792697] [2024-11-20 17:44:25,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:25,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 17:44:25,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:25,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 17:44:25,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 17:44:25,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 79 [2024-11-20 17:44:25,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 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) [2024-11-20 17:44:25,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:25,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 79 [2024-11-20 17:44:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:26,217 INFO L124 PetriNetUnfolderBase]: 4821/7842 cut-off events. [2024-11-20 17:44:26,217 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-11-20 17:44:26,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15564 conditions, 7842 events. 4821/7842 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 52356 event pairs, 2030 based on Foata normal form. 0/5690 useless extension candidates. Maximal degree in co-relation 14794. Up to 3455 conditions per place. [2024-11-20 17:44:26,246 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 75 selfloop transitions, 6 changer transitions 0/94 dead transitions. [2024-11-20 17:44:26,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 459 flow [2024-11-20 17:44:26,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:26,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-11-20 17:44:26,248 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4278481012658228 [2024-11-20 17:44:26,248 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 247 flow. Second operand 5 states and 169 transitions. [2024-11-20 17:44:26,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 459 flow [2024-11-20 17:44:26,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 94 transitions, 455 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:26,250 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 273 flow [2024-11-20 17:44:26,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2024-11-20 17:44:26,251 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-20 17:44:26,252 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 273 flow [2024-11-20 17:44:26,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.428571428571427) internal successors, (150), 7 states have internal predecessors, (150), 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) [2024-11-20 17:44:26,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:26,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:26,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 17:44:26,253 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:26,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:26,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1641737938, now seen corresponding path program 1 times [2024-11-20 17:44:26,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:26,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350740327] [2024-11-20 17:44:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:26,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-20 17:44:26,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:26,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350740327] [2024-11-20 17:44:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350740327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:26,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 17:44:26,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842703422] [2024-11-20 17:44:26,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:26,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:44:26,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:26,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:44:26,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:44:26,299 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:26,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-20 17:44:26,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:26,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:26,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:26,721 INFO L124 PetriNetUnfolderBase]: 4537/7120 cut-off events. [2024-11-20 17:44:26,721 INFO L125 PetriNetUnfolderBase]: For 3395/3395 co-relation queries the response was YES. [2024-11-20 17:44:26,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15723 conditions, 7120 events. 4537/7120 cut-off events. For 3395/3395 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 44292 event pairs, 1506 based on Foata normal form. 141/5161 useless extension candidates. Maximal degree in co-relation 15433. Up to 4882 conditions per place. [2024-11-20 17:44:26,749 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 75 selfloop transitions, 2 changer transitions 5/96 dead transitions. [2024-11-20 17:44:26,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 509 flow [2024-11-20 17:44:26,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:44:26,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:44:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-20 17:44:26,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6160337552742616 [2024-11-20 17:44:26,750 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 273 flow. Second operand 3 states and 146 transitions. [2024-11-20 17:44:26,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 509 flow [2024-11-20 17:44:26,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 96 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:26,754 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 244 flow [2024-11-20 17:44:26,754 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-20 17:44:26,755 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-20 17:44:26,755 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 244 flow [2024-11-20 17:44:26,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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) [2024-11-20 17:44:26,755 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:26,756 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:26,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 17:44:26,756 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:26,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:26,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1244505647, now seen corresponding path program 1 times [2024-11-20 17:44:26,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:26,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551300820] [2024-11-20 17:44:26,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:26,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:26,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:26,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:26,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551300820] [2024-11-20 17:44:26,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551300820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:26,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:26,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888237414] [2024-11-20 17:44:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:26,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:44:26,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:26,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:44:26,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:44:26,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:26,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:26,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:26,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:26,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:27,211 INFO L124 PetriNetUnfolderBase]: 4250/6614 cut-off events. [2024-11-20 17:44:27,212 INFO L125 PetriNetUnfolderBase]: For 3842/3859 co-relation queries the response was YES. [2024-11-20 17:44:27,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15608 conditions, 6614 events. 4250/6614 cut-off events. For 3842/3859 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 39203 event pairs, 1943 based on Foata normal form. 51/5114 useless extension candidates. Maximal degree in co-relation 15574. Up to 5410 conditions per place. [2024-11-20 17:44:27,245 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 70 selfloop transitions, 4 changer transitions 0/88 dead transitions. [2024-11-20 17:44:27,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 88 transitions, 454 flow [2024-11-20 17:44:27,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:44:27,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:44:27,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-20 17:44:27,247 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-20 17:44:27,247 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 244 flow. Second operand 3 states and 140 transitions. [2024-11-20 17:44:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 88 transitions, 454 flow [2024-11-20 17:44:27,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 444 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:27,251 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 274 flow [2024-11-20 17:44:27,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-11-20 17:44:27,252 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-20 17:44:27,252 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 274 flow [2024-11-20 17:44:27,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:27,252 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:27,252 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:27,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 17:44:27,253 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:27,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:27,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1832406174, now seen corresponding path program 1 times [2024-11-20 17:44:27,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:27,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510754628] [2024-11-20 17:44:27,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:27,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:27,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510754628] [2024-11-20 17:44:27,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510754628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:27,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:27,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450180106] [2024-11-20 17:44:27,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:27,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:27,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:27,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:27,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:27,344 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:27,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-20 17:44:27,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:27,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:27,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:28,171 INFO L124 PetriNetUnfolderBase]: 6256/9803 cut-off events. [2024-11-20 17:44:28,171 INFO L125 PetriNetUnfolderBase]: For 9070/9094 co-relation queries the response was YES. [2024-11-20 17:44:28,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24831 conditions, 9803 events. 6256/9803 cut-off events. For 9070/9094 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 62197 event pairs, 4579 based on Foata normal form. 191/7820 useless extension candidates. Maximal degree in co-relation 24796. Up to 5787 conditions per place. [2024-11-20 17:44:28,209 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 87 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2024-11-20 17:44:28,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 592 flow [2024-11-20 17:44:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:28,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:28,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 184 transitions. [2024-11-20 17:44:28,210 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5822784810126582 [2024-11-20 17:44:28,210 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 274 flow. Second operand 4 states and 184 transitions. [2024-11-20 17:44:28,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 592 flow [2024-11-20 17:44:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:44:28,217 INFO L231 Difference]: Finished difference. Result has 81 places, 73 transitions, 291 flow [2024-11-20 17:44:28,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=291, PETRI_PLACES=81, PETRI_TRANSITIONS=73} [2024-11-20 17:44:28,218 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-20 17:44:28,218 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 73 transitions, 291 flow [2024-11-20 17:44:28,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2024-11-20 17:44:28,218 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:28,218 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:28,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 17:44:28,219 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:28,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2123162883, now seen corresponding path program 1 times [2024-11-20 17:44:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878017405] [2024-11-20 17:44:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:28,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:28,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878017405] [2024-11-20 17:44:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878017405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:44:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025004550] [2024-11-20 17:44:28,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:28,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:28,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:28,404 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) [2024-11-20 17:44:28,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 17:44:28,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:28,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 17:44:28,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:44:28,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:28,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 17:44:28,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025004550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:28,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 17:44:28,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-20 17:44:28,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121240732] [2024-11-20 17:44:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:28,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:44:28,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:44:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-20 17:44:28,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:28,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 73 transitions, 291 flow. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2024-11-20 17:44:28,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:28,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:29,218 INFO L124 PetriNetUnfolderBase]: 5628/8873 cut-off events. [2024-11-20 17:44:29,218 INFO L125 PetriNetUnfolderBase]: For 8663/8687 co-relation queries the response was YES. [2024-11-20 17:44:29,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23081 conditions, 8873 events. 5628/8873 cut-off events. For 8663/8687 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 55597 event pairs, 4062 based on Foata normal form. 0/7084 useless extension candidates. Maximal degree in co-relation 23045. Up to 7785 conditions per place. [2024-11-20 17:44:29,261 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 53 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-11-20 17:44:29,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 71 transitions, 397 flow [2024-11-20 17:44:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:29,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-11-20 17:44:29,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47151898734177217 [2024-11-20 17:44:29,263 INFO L175 Difference]: Start difference. First operand has 81 places, 73 transitions, 291 flow. Second operand 4 states and 149 transitions. [2024-11-20 17:44:29,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 71 transitions, 397 flow [2024-11-20 17:44:29,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 71 transitions, 394 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-20 17:44:29,268 INFO L231 Difference]: Finished difference. Result has 81 places, 71 transitions, 288 flow [2024-11-20 17:44:29,268 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=81, PETRI_TRANSITIONS=71} [2024-11-20 17:44:29,268 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-20 17:44:29,268 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 71 transitions, 288 flow [2024-11-20 17:44:29,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 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) [2024-11-20 17:44:29,269 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:29,269 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:29,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-20 17:44:29,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 17:44:29,474 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:29,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:29,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2123162882, now seen corresponding path program 1 times [2024-11-20 17:44:29,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:29,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837240529] [2024-11-20 17:44:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:29,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:29,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:29,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:29,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837240529] [2024-11-20 17:44:29,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837240529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:29,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:29,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021132002] [2024-11-20 17:44:29,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:29,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:29,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:29,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 71 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 17:44:29,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:29,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:29,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:30,285 INFO L124 PetriNetUnfolderBase]: 5050/8013 cut-off events. [2024-11-20 17:44:30,285 INFO L125 PetriNetUnfolderBase]: For 8155/8179 co-relation queries the response was YES. [2024-11-20 17:44:30,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20819 conditions, 8013 events. 5050/8013 cut-off events. For 8155/8179 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 49755 event pairs, 3591 based on Foata normal form. 0/6568 useless extension candidates. Maximal degree in co-relation 20783. Up to 6985 conditions per place. [2024-11-20 17:44:30,330 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 52 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-20 17:44:30,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 69 transitions, 390 flow [2024-11-20 17:44:30,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:30,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-20 17:44:30,331 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4272151898734177 [2024-11-20 17:44:30,332 INFO L175 Difference]: Start difference. First operand has 81 places, 71 transitions, 288 flow. Second operand 4 states and 135 transitions. [2024-11-20 17:44:30,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 69 transitions, 390 flow [2024-11-20 17:44:30,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 69 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:30,335 INFO L231 Difference]: Finished difference. Result has 80 places, 69 transitions, 280 flow [2024-11-20 17:44:30,335 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=80, PETRI_TRANSITIONS=69} [2024-11-20 17:44:30,336 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-11-20 17:44:30,336 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 69 transitions, 280 flow [2024-11-20 17:44:30,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 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) [2024-11-20 17:44:30,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:30,337 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:30,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-20 17:44:30,337 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:30,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -11242019, now seen corresponding path program 1 times [2024-11-20 17:44:30,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:30,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997260440] [2024-11-20 17:44:30,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:30,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:30,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:30,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997260440] [2024-11-20 17:44:30,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997260440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:30,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:30,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814756269] [2024-11-20 17:44:30,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:30,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:30,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:30,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:30,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:30,478 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:30,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 69 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:30,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:30,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:30,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:31,205 INFO L124 PetriNetUnfolderBase]: 6098/9931 cut-off events. [2024-11-20 17:44:31,205 INFO L125 PetriNetUnfolderBase]: For 10099/10147 co-relation queries the response was YES. [2024-11-20 17:44:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25750 conditions, 9931 events. 6098/9931 cut-off events. For 10099/10147 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 64896 event pairs, 4371 based on Foata normal form. 212/8557 useless extension candidates. Maximal degree in co-relation 25713. Up to 6999 conditions per place. [2024-11-20 17:44:31,248 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 52 selfloop transitions, 2 changer transitions 31/99 dead transitions. [2024-11-20 17:44:31,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 592 flow [2024-11-20 17:44:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:31,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:31,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-11-20 17:44:31,249 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5474683544303798 [2024-11-20 17:44:31,249 INFO L175 Difference]: Start difference. First operand has 80 places, 69 transitions, 280 flow. Second operand 4 states and 173 transitions. [2024-11-20 17:44:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 592 flow [2024-11-20 17:44:31,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 99 transitions, 586 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:31,255 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 280 flow [2024-11-20 17:44:31,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-11-20 17:44:31,255 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2024-11-20 17:44:31,256 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 280 flow [2024-11-20 17:44:31,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:31,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:31,256 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:31,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 17:44:31,256 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:31,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2111060649, now seen corresponding path program 1 times [2024-11-20 17:44:31,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:31,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118964010] [2024-11-20 17:44:31,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:31,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:31,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118964010] [2024-11-20 17:44:31,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118964010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:31,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:31,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:31,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538485063] [2024-11-20 17:44:31,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:31,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 17:44:31,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:31,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 17:44:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 17:44:31,359 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:31,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-20 17:44:31,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:31,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:31,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:31,762 INFO L124 PetriNetUnfolderBase]: 3719/6140 cut-off events. [2024-11-20 17:44:31,762 INFO L125 PetriNetUnfolderBase]: For 6412/6436 co-relation queries the response was YES. [2024-11-20 17:44:31,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16213 conditions, 6140 events. 3719/6140 cut-off events. For 6412/6436 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 38126 event pairs, 2600 based on Foata normal form. 0/5412 useless extension candidates. Maximal degree in co-relation 16175. Up to 5170 conditions per place. [2024-11-20 17:44:31,788 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 48 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-20 17:44:31,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 66 transitions, 376 flow [2024-11-20 17:44:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 156 transitions. [2024-11-20 17:44:31,789 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3949367088607595 [2024-11-20 17:44:31,789 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 280 flow. Second operand 5 states and 156 transitions. [2024-11-20 17:44:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 66 transitions, 376 flow [2024-11-20 17:44:31,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 66 transitions, 370 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:31,795 INFO L231 Difference]: Finished difference. Result has 81 places, 66 transitions, 274 flow [2024-11-20 17:44:31,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=81, PETRI_TRANSITIONS=66} [2024-11-20 17:44:31,795 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 6 predicate places. [2024-11-20 17:44:31,795 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 66 transitions, 274 flow [2024-11-20 17:44:31,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2024-11-20 17:44:31,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:31,796 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:31,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 17:44:31,796 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:31,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:31,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2111060650, now seen corresponding path program 1 times [2024-11-20 17:44:31,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:31,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167352146] [2024-11-20 17:44:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:31,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:32,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 17:44:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:32,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167352146] [2024-11-20 17:44:32,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167352146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:32,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:32,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-20 17:44:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44394797] [2024-11-20 17:44:32,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:32,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 17:44:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 17:44:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 17:44:32,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 79 [2024-11-20 17:44:32,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 66 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-11-20 17:44:32,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:32,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 79 [2024-11-20 17:44:32,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:32,433 INFO L124 PetriNetUnfolderBase]: 2591/4542 cut-off events. [2024-11-20 17:44:32,433 INFO L125 PetriNetUnfolderBase]: For 4375/4399 co-relation queries the response was YES. [2024-11-20 17:44:32,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 4542 events. 2591/4542 cut-off events. For 4375/4399 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 28577 event pairs, 1771 based on Foata normal form. 286/4383 useless extension candidates. Maximal degree in co-relation 11469. Up to 3634 conditions per place. [2024-11-20 17:44:32,451 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 47 selfloop transitions, 2 changer transitions 1/64 dead transitions. [2024-11-20 17:44:32,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 64 transitions, 368 flow [2024-11-20 17:44:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 17:44:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-20 17:44:32,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-20 17:44:32,453 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41455696202531644 [2024-11-20 17:44:32,453 INFO L175 Difference]: Start difference. First operand has 81 places, 66 transitions, 274 flow. Second operand 4 states and 131 transitions. [2024-11-20 17:44:32,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 64 transitions, 368 flow [2024-11-20 17:44:32,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 64 transitions, 362 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:44:32,456 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 256 flow [2024-11-20 17:44:32,456 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-20 17:44:32,456 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-20 17:44:32,456 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 256 flow [2024-11-20 17:44:32,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 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) [2024-11-20 17:44:32,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:32,457 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:32,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 17:44:32,457 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:32,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1774662268, now seen corresponding path program 1 times [2024-11-20 17:44:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:32,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470516190] [2024-11-20 17:44:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:32,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 17:44:32,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:32,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470516190] [2024-11-20 17:44:32,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470516190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:32,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:32,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:32,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38239593] [2024-11-20 17:44:32,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:32,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:44:32,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:32,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:44:32,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:44:32,519 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:32,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:32,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:32,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:32,870 INFO L124 PetriNetUnfolderBase]: 2859/4936 cut-off events. [2024-11-20 17:44:32,870 INFO L125 PetriNetUnfolderBase]: For 4471/4483 co-relation queries the response was YES. [2024-11-20 17:44:32,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12369 conditions, 4936 events. 2859/4936 cut-off events. For 4471/4483 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 30540 event pairs, 1092 based on Foata normal form. 1/4477 useless extension candidates. Maximal degree in co-relation 12331. Up to 2024 conditions per place. [2024-11-20 17:44:32,896 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 68 selfloop transitions, 2 changer transitions 8/92 dead transitions. [2024-11-20 17:44:32,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 92 transitions, 533 flow [2024-11-20 17:44:32,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:44:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:44:32,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2024-11-20 17:44:32,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5907172995780591 [2024-11-20 17:44:32,897 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 256 flow. Second operand 3 states and 140 transitions. [2024-11-20 17:44:32,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 92 transitions, 533 flow [2024-11-20 17:44:32,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 530 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:32,900 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 259 flow [2024-11-20 17:44:32,900 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-11-20 17:44:32,901 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-20 17:44:32,901 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 259 flow [2024-11-20 17:44:32,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:32,901 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:32,901 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:32,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-20 17:44:32,901 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:32,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:32,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1896191983, now seen corresponding path program 1 times [2024-11-20 17:44:32,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:32,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718394277] [2024-11-20 17:44:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:32,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 17:44:32,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:32,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718394277] [2024-11-20 17:44:32,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718394277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 17:44:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 17:44:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 17:44:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5231232] [2024-11-20 17:44:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 17:44:32,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 17:44:32,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 17:44:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 17:44:32,957 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 79 [2024-11-20 17:44:32,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 259 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-20 17:44:32,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:32,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 79 [2024-11-20 17:44:32,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:33,316 INFO L124 PetriNetUnfolderBase]: 2403/4436 cut-off events. [2024-11-20 17:44:33,316 INFO L125 PetriNetUnfolderBase]: For 3667/3681 co-relation queries the response was YES. [2024-11-20 17:44:33,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10755 conditions, 4436 events. 2403/4436 cut-off events. For 3667/3681 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 29064 event pairs, 945 based on Foata normal form. 140/4142 useless extension candidates. Maximal degree in co-relation 10716. Up to 1669 conditions per place. [2024-11-20 17:44:33,335 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 58 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-20 17:44:33,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 75 transitions, 403 flow [2024-11-20 17:44:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 17:44:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-20 17:44:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-20 17:44:33,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5485232067510548 [2024-11-20 17:44:33,336 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 259 flow. Second operand 3 states and 130 transitions. [2024-11-20 17:44:33,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 75 transitions, 403 flow [2024-11-20 17:44:33,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 75 transitions, 396 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-20 17:44:33,340 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 243 flow [2024-11-20 17:44:33,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2024-11-20 17:44:33,341 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2024-11-20 17:44:33,341 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 243 flow [2024-11-20 17:44:33,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-20 17:44:33,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-20 17:44:33,342 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:33,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-20 17:44:33,342 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 36 more)] === [2024-11-20 17:44:33,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 17:44:33,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1046242646, now seen corresponding path program 1 times [2024-11-20 17:44:33,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 17:44:33,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760559397] [2024-11-20 17:44:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:33,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 17:44:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 17:44:33,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 17:44:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760559397] [2024-11-20 17:44:33,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760559397] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 17:44:33,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636569628] [2024-11-20 17:44:33,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 17:44:33,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 17:44:33,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 17:44:33,426 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) [2024-11-20 17:44:33,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 17:44:33,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 17:44:33,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-20 17:44:33,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 17:44:33,560 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 24 treesize of output 8 [2024-11-20 17:44:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 17:44:33,562 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 17:44:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-20 17:44:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636569628] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 17:44:33,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 17:44:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-20 17:44:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49186931] [2024-11-20 17:44:33,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 17:44:33,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 17:44:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 17:44:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 17:44:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-20 17:44:33,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 79 [2024-11-20 17:44:33,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:33,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-20 17:44:33,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 79 [2024-11-20 17:44:33,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-20 17:44:33,983 INFO L124 PetriNetUnfolderBase]: 2219/3997 cut-off events. [2024-11-20 17:44:33,983 INFO L125 PetriNetUnfolderBase]: For 3314/3314 co-relation queries the response was YES. [2024-11-20 17:44:33,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9550 conditions, 3997 events. 2219/3997 cut-off events. For 3314/3314 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 25104 event pairs, 722 based on Foata normal form. 0/3680 useless extension candidates. Maximal degree in co-relation 9510. Up to 1305 conditions per place. [2024-11-20 17:44:33,994 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2024-11-20 17:44:33,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 103 transitions, 549 flow [2024-11-20 17:44:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 17:44:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-20 17:44:33,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 205 transitions. [2024-11-20 17:44:33,995 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189873417721519 [2024-11-20 17:44:33,995 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 243 flow. Second operand 5 states and 205 transitions. [2024-11-20 17:44:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 103 transitions, 549 flow [2024-11-20 17:44:33,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 103 transitions, 540 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-20 17:44:33,997 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-11-20 17:44:33,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-11-20 17:44:33,998 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2024-11-20 17:44:33,998 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-11-20 17:44:33,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-20 17:44:34,001 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 39 remaining) [2024-11-20 17:44:34,001 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 39 remaining) [2024-11-20 17:44:34,001 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 39 remaining) [2024-11-20 17:44:34,002 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 39 remaining) [2024-11-20 17:44:34,003 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (18 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-11-20 17:44:34,004 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 39 remaining) [2024-11-20 17:44:34,005 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 39 remaining) [2024-11-20 17:44:34,006 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 39 remaining) [2024-11-20 17:44:34,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-20 17:44:34,207 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,SelfDestructingSolverStorable21 [2024-11-20 17:44:34,207 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 17:44:34,212 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-20 17:44:34,212 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-20 17:44:34,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:44:34 BasicIcfg [2024-11-20 17:44:34,216 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-20 17:44:34,217 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-20 17:44:34,217 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-20 17:44:34,219 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-20 17:44:34,219 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:44:11" (3/4) ... [2024-11-20 17:44:34,221 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-20 17:44:34,223 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-20 17:44:34,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-20 17:44:34,224 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-20 17:44:34,232 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 191 nodes and edges [2024-11-20 17:44:34,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2024-11-20 17:44:34,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-20 17:44:34,233 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-20 17:44:34,328 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-20 17:44:34,329 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-20 17:44:34,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-20 17:44:34,330 INFO L158 Benchmark]: Toolchain (without parser) took 24869.10ms. Allocated memory was 155.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 100.2MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 266.4MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,330 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 96.5MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-20 17:44:34,330 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.42ms. Allocated memory is still 155.2MB. Free memory was 99.8MB in the beginning and 121.7MB in the end (delta: -21.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,330 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.85ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 119.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,331 INFO L158 Benchmark]: Boogie Preprocessor took 69.94ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 116.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,331 INFO L158 Benchmark]: RCFGBuilder took 1128.62ms. Allocated memory is still 155.2MB. Free memory was 115.4MB in the beginning and 73.6MB in the end (delta: 41.9MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,331 INFO L158 Benchmark]: TraceAbstraction took 23019.14ms. Allocated memory was 155.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 72.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-20 17:44:34,331 INFO L158 Benchmark]: Witness Printer took 112.18ms. Allocated memory is still 2.2GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-20 17:44:34,333 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 96.5MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.42ms. Allocated memory is still 155.2MB. Free memory was 99.8MB in the beginning and 121.7MB in the end (delta: -21.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.85ms. Allocated memory is still 155.2MB. Free memory was 121.7MB in the beginning and 119.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.94ms. Allocated memory is still 155.2MB. Free memory was 119.0MB in the beginning and 116.1MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1128.62ms. Allocated memory is still 155.2MB. Free memory was 115.4MB in the beginning and 73.6MB in the end (delta: 41.9MB). Peak memory consumption was 55.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23019.14ms. Allocated memory was 155.2MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 72.5MB in the beginning and 1.8GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 112.18ms. Allocated memory is still 2.2GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 123]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 115 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.9s, OverallIterations: 22, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1475 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1257 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 109 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4206 IncrementalHoareTripleChecker+Invalid, 4315 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 109 mSolverCounterUnsat, 49 mSDtfsCounter, 4206 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 242 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=291occurred in iteration=14, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 457 ConstructedInterpolants, 2 QuantifiedInterpolants, 2915 SizeOfPredicates, 16 NumberOfNonLiveVariables, 915 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 31 InterpolantComputations, 18 PerfectInterpolantSequences, 52/71 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-20 17:44:34,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE