./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -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 a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-17 03:07:07,133 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-17 03:07:07,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-17 03:07:07,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-17 03:07:07,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-17 03:07:07,268 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-17 03:07:07,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-17 03:07:07,269 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-17 03:07:07,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-17 03:07:07,271 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-17 03:07:07,271 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-17 03:07:07,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-17 03:07:07,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-17 03:07:07,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-17 03:07:07,272 INFO L153 SettingsManager]: * Use SBE=true [2024-11-17 03:07:07,273 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-17 03:07:07,275 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-17 03:07:07,276 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-17 03:07:07,276 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-17 03:07:07,276 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-17 03:07:07,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-17 03:07:07,280 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-17 03:07:07,280 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-17 03:07:07,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-17 03:07:07,281 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-17 03:07:07,281 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-17 03:07:07,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-17 03:07:07,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-17 03:07:07,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-17 03:07:07,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-17 03:07:07,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-17 03:07:07,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-17 03:07:07,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-17 03:07:07,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:07,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-17 03:07:07,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-17 03:07:07,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-17 03:07:07,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-17 03:07:07,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-17 03:07:07,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-17 03:07:07,286 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-17 03:07:07,286 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-17 03:07:07,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2024-11-17 03:07:07,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-17 03:07:07,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-17 03:07:07,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-17 03:07:07,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-17 03:07:07,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-17 03:07:07,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2024-11-17 03:07:09,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-17 03:07:09,313 INFO L384 CDTParser]: Found 1 translation units. [2024-11-17 03:07:09,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2024-11-17 03:07:09,338 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d8fa1ba/9e5b26f066924b8daadba714f63a58cf/FLAG097082e79 [2024-11-17 03:07:09,352 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32d8fa1ba/9e5b26f066924b8daadba714f63a58cf [2024-11-17 03:07:09,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-17 03:07:09,358 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-17 03:07:09,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:09,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-17 03:07:09,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-17 03:07:09,367 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,368 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22a869b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09, skipping insertion in model container [2024-11-17 03:07:09,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-17 03:07:09,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:09,806 INFO L200 MainTranslator]: Completed pre-run [2024-11-17 03:07:09,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-17 03:07:09,907 INFO L204 MainTranslator]: Completed translation [2024-11-17 03:07:09,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09 WrapperNode [2024-11-17 03:07:09,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-17 03:07:09,909 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:09,910 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-17 03:07:09,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-17 03:07:09,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,955 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 161 [2024-11-17 03:07:09,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-17 03:07:09,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-17 03:07:09,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-17 03:07:09,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-17 03:07:09,970 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,989 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 6, 9, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 2, 1, 0]. The 8 writes are split as follows [0, 2, 2, 4]. [2024-11-17 03:07:09,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:09,998 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:10,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:10,001 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:10,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-17 03:07:10,009 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-17 03:07:10,009 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-17 03:07:10,009 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-17 03:07:10,010 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (1/1) ... [2024-11-17 03:07:10,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-17 03:07:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-17 03:07:10,045 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-17 03:07:10,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-17 03:07:10,103 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-17 03:07:10,104 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-17 03:07:10,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-17 03:07:10,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-17 03:07:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-17 03:07:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-17 03:07:10,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-17 03:07:10,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-17 03:07:10,120 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-17 03:07:10,243 INFO L256 CfgBuilder]: Building ICFG [2024-11-17 03:07:10,245 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-17 03:07:10,571 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L731: havoc dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset; [2024-11-17 03:07:10,571 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L731-1: SUMMARY for call ULTIMATE.dealloc(dec_~#dec__casret~0#1.base, dec_~#dec__casret~0#1.offset); srcloc: null [2024-11-17 03:07:10,572 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L711: havoc inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset; [2024-11-17 03:07:10,572 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L711-1: SUMMARY for call ULTIMATE.dealloc(inc_~#inc__casret~0#1.base, inc_~#inc__casret~0#1.offset); srcloc: null [2024-11-17 03:07:10,613 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-17 03:07:10,613 INFO L307 CfgBuilder]: Performing block encoding [2024-11-17 03:07:10,970 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-17 03:07:10,970 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-17 03:07:10,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:10 BoogieIcfgContainer [2024-11-17 03:07:10,971 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-17 03:07:10,973 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-17 03:07:10,973 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-17 03:07:10,976 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-17 03:07:10,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:07:09" (1/3) ... [2024-11-17 03:07:10,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:10, skipping insertion in model container [2024-11-17 03:07:10,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:07:09" (2/3) ... [2024-11-17 03:07:10,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fc193d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:07:10, skipping insertion in model container [2024-11-17 03:07:10,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.11 03:07:10" (3/3) ... [2024-11-17 03:07:10,982 INFO L112 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2024-11-17 03:07:10,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-17 03:07:11,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 39 error locations. [2024-11-17 03:07:11,000 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-17 03:07:11,175 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:11,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 79 transitions, 162 flow [2024-11-17 03:07:11,287 INFO L124 PetriNetUnfolderBase]: 11/86 cut-off events. [2024-11-17 03:07:11,287 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:11,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 86 events. 11/86 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 388 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 76. Up to 4 conditions per place. [2024-11-17 03:07:11,294 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 79 transitions, 162 flow [2024-11-17 03:07:11,298 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 79 transitions, 162 flow [2024-11-17 03:07:11,307 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:11,314 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;@b1ca75a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:11,314 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2024-11-17 03:07:11,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:11,318 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:11,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:11,319 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:11,319 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:11,320 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-11-17 03:07:11,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash 16532192, now seen corresponding path program 1 times [2024-11-17 03:07:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002604780] [2024-11-17 03:07:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:11,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002604780] [2024-11-17 03:07:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002604780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507070387] [2024-11-17 03:07:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:11,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:11,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:11,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:11,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 79 [2024-11-17 03:07:11,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:11,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:11,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 79 [2024-11-17 03:07:11,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:11,760 INFO L124 PetriNetUnfolderBase]: 115/290 cut-off events. [2024-11-17 03:07:11,763 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:11,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 290 events. 115/290 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1582 event pairs, 94 based on Foata normal form. 55/222 useless extension candidates. Maximal degree in co-relation 542. Up to 262 conditions per place. [2024-11-17 03:07:11,768 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 58 selfloop transitions, 0 changer transitions 0/68 dead transitions. [2024-11-17 03:07:11,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 256 flow [2024-11-17 03:07:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:11,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 90 transitions. [2024-11-17 03:07:11,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.569620253164557 [2024-11-17 03:07:11,783 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 162 flow. Second operand 2 states and 90 transitions. [2024-11-17 03:07:11,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 256 flow [2024-11-17 03:07:11,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 68 transitions, 256 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:11,789 INFO L231 Difference]: Finished difference. Result has 65 places, 68 transitions, 140 flow [2024-11-17 03:07:11,791 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=68} [2024-11-17 03:07:11,795 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2024-11-17 03:07:11,797 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 68 transitions, 140 flow [2024-11-17 03:07:11,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:11,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:11,797 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-17 03:07:11,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-17 03:07:11,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2024-11-17 03:07:11,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:11,799 INFO L85 PathProgramCache]: Analyzing trace with hash 822705168, now seen corresponding path program 1 times [2024-11-17 03:07:11,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:11,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848531575] [2024-11-17 03:07:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:11,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:11,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:11,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:11,879 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:11,881 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2024-11-17 03:07:11,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2024-11-17 03:07:11,883 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2024-11-17 03:07:11,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2024-11-17 03:07:11,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2024-11-17 03:07:11,884 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2024-11-17 03:07:11,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2024-11-17 03:07:11,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (70 of 78 remaining) [2024-11-17 03:07:11,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2024-11-17 03:07:11,885 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 78 remaining) [2024-11-17 03:07:11,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2024-11-17 03:07:11,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2024-11-17 03:07:11,886 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2024-11-17 03:07:11,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2024-11-17 03:07:11,887 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2024-11-17 03:07:11,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2024-11-17 03:07:11,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2024-11-17 03:07:11,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2024-11-17 03:07:11,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2024-11-17 03:07:11,888 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2024-11-17 03:07:11,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2024-11-17 03:07:11,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2024-11-17 03:07:11,889 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2024-11-17 03:07:11,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2024-11-17 03:07:11,890 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2024-11-17 03:07:11,891 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2024-11-17 03:07:11,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2024-11-17 03:07:11,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2024-11-17 03:07:11,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2024-11-17 03:07:11,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2024-11-17 03:07:11,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2024-11-17 03:07:11,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2024-11-17 03:07:11,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2024-11-17 03:07:11,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2024-11-17 03:07:11,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2024-11-17 03:07:11,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2024-11-17 03:07:11,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2024-11-17 03:07:11,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2024-11-17 03:07:11,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2024-11-17 03:07:11,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2024-11-17 03:07:11,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (31 of 78 remaining) [2024-11-17 03:07:11,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2024-11-17 03:07:11,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 78 remaining) [2024-11-17 03:07:11,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2024-11-17 03:07:11,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2024-11-17 03:07:11,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2024-11-17 03:07:11,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2024-11-17 03:07:11,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2024-11-17 03:07:11,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2024-11-17 03:07:11,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2024-11-17 03:07:11,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2024-11-17 03:07:11,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2024-11-17 03:07:11,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2024-11-17 03:07:11,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2024-11-17 03:07:11,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2024-11-17 03:07:11,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2024-11-17 03:07:11,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2024-11-17 03:07:11,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2024-11-17 03:07:11,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2024-11-17 03:07:11,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-17 03:07:11,905 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-17 03:07:11,910 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:11,910 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-17 03:07:12,076 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:12,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 148 transitions, 306 flow [2024-11-17 03:07:12,120 INFO L124 PetriNetUnfolderBase]: 21/163 cut-off events. [2024-11-17 03:07:12,120 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-17 03:07:12,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 163 events. 21/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 894 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 144. Up to 6 conditions per place. [2024-11-17 03:07:12,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 148 transitions, 306 flow [2024-11-17 03:07:12,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 148 transitions, 306 flow [2024-11-17 03:07:12,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:12,132 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;@b1ca75a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:12,132 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2024-11-17 03:07:12,134 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:12,134 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:12,134 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:12,134 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:12,134 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:12,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:12,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 21088224, now seen corresponding path program 1 times [2024-11-17 03:07:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633724168] [2024-11-17 03:07:12,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:12,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:12,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:12,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633724168] [2024-11-17 03:07:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633724168] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:12,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811226923] [2024-11-17 03:07:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:12,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:12,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:12,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:12,186 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:12,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 148 transitions, 306 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:12,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:12,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:12,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:15,368 INFO L124 PetriNetUnfolderBase]: 13411/21643 cut-off events. [2024-11-17 03:07:15,369 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-17 03:07:15,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42262 conditions, 21643 events. 13411/21643 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 1626. Compared 172636 event pairs, 11374 based on Foata normal form. 2935/12989 useless extension candidates. Maximal degree in co-relation 17947. Up to 20470 conditions per place. [2024-11-17 03:07:15,548 INFO L140 encePairwiseOnDemand]: 134/148 looper letters, 113 selfloop transitions, 0 changer transitions 0/131 dead transitions. [2024-11-17 03:07:15,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 131 transitions, 498 flow [2024-11-17 03:07:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-17 03:07:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-17 03:07:15,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 167 transitions. [2024-11-17 03:07:15,551 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5641891891891891 [2024-11-17 03:07:15,551 INFO L175 Difference]: Start difference. First operand has 134 places, 148 transitions, 306 flow. Second operand 2 states and 167 transitions. [2024-11-17 03:07:15,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 131 transitions, 498 flow [2024-11-17 03:07:15,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 131 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:15,556 INFO L231 Difference]: Finished difference. Result has 123 places, 131 transitions, 272 flow [2024-11-17 03:07:15,557 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=272, PETRI_PLACES=123, PETRI_TRANSITIONS=131} [2024-11-17 03:07:15,557 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -11 predicate places. [2024-11-17 03:07:15,558 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 131 transitions, 272 flow [2024-11-17 03:07:15,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:15,558 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:15,558 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:15,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-17 03:07:15,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:15,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -584462377, now seen corresponding path program 1 times [2024-11-17 03:07:15,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:15,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579182353] [2024-11-17 03:07:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:15,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:15,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:15,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:15,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579182353] [2024-11-17 03:07:15,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579182353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:15,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:15,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368858759] [2024-11-17 03:07:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:15,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:07:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:07:15,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:07:15,776 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:15,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:15,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:15,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:15,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:18,611 INFO L124 PetriNetUnfolderBase]: 12049/19599 cut-off events. [2024-11-17 03:07:18,612 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-17 03:07:18,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38209 conditions, 19599 events. 12049/19599 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 1426. Compared 155667 event pairs, 7200 based on Foata normal form. 0/10074 useless extension candidates. Maximal degree in co-relation 38204. Up to 12476 conditions per place. [2024-11-17 03:07:18,738 INFO L140 encePairwiseOnDemand]: 87/148 looper letters, 241 selfloop transitions, 57 changer transitions 0/316 dead transitions. [2024-11-17 03:07:18,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 316 transitions, 1243 flow [2024-11-17 03:07:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:07:18,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:07:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 402 transitions. [2024-11-17 03:07:18,745 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6790540540540541 [2024-11-17 03:07:18,746 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 272 flow. Second operand 4 states and 402 transitions. [2024-11-17 03:07:18,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 316 transitions, 1243 flow [2024-11-17 03:07:18,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 316 transitions, 1243 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:18,754 INFO L231 Difference]: Finished difference. Result has 129 places, 187 transitions, 756 flow [2024-11-17 03:07:18,756 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=129, PETRI_TRANSITIONS=187} [2024-11-17 03:07:18,757 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2024-11-17 03:07:18,758 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 187 transitions, 756 flow [2024-11-17 03:07:18,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:18,758 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:18,758 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:18,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-17 03:07:18,758 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:18,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash -584462376, now seen corresponding path program 1 times [2024-11-17 03:07:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:18,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188760301] [2024-11-17 03:07:18,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:18,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:18,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188760301] [2024-11-17 03:07:18,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188760301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:18,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:18,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:18,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548980877] [2024-11-17 03:07:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:18,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:07:18,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:18,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:07:18,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:07:18,961 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:18,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 187 transitions, 756 flow. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:18,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:18,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:18,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:21,134 INFO L124 PetriNetUnfolderBase]: 9271/15095 cut-off events. [2024-11-17 03:07:21,135 INFO L125 PetriNetUnfolderBase]: For 2428/3136 co-relation queries the response was YES. [2024-11-17 03:07:21,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36824 conditions, 15095 events. 9271/15095 cut-off events. For 2428/3136 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 114598 event pairs, 5478 based on Foata normal form. 924/10292 useless extension candidates. Maximal degree in co-relation 36816. Up to 8972 conditions per place. [2024-11-17 03:07:21,265 INFO L140 encePairwiseOnDemand]: 127/148 looper letters, 221 selfloop transitions, 9 changer transitions 0/248 dead transitions. [2024-11-17 03:07:21,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 248 transitions, 1423 flow [2024-11-17 03:07:21,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-17 03:07:21,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-17 03:07:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 286 transitions. [2024-11-17 03:07:21,267 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-11-17 03:07:21,268 INFO L175 Difference]: Start difference. First operand has 129 places, 187 transitions, 756 flow. Second operand 4 states and 286 transitions. [2024-11-17 03:07:21,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 248 transitions, 1423 flow [2024-11-17 03:07:21,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 248 transitions, 1423 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:21,291 INFO L231 Difference]: Finished difference. Result has 120 places, 175 transitions, 750 flow [2024-11-17 03:07:21,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=750, PETRI_PLACES=120, PETRI_TRANSITIONS=175} [2024-11-17 03:07:21,293 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -14 predicate places. [2024-11-17 03:07:21,294 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 175 transitions, 750 flow [2024-11-17 03:07:21,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:21,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:21,295 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:21,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-17 03:07:21,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:21,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash 972397761, now seen corresponding path program 1 times [2024-11-17 03:07:21,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:21,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974213125] [2024-11-17 03:07:21,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:21,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:21,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:21,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974213125] [2024-11-17 03:07:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974213125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642723689] [2024-11-17 03:07:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:21,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:21,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 148 [2024-11-17 03:07:21,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 175 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:21,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:21,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 148 [2024-11-17 03:07:21,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:23,363 INFO L124 PetriNetUnfolderBase]: 9419/15178 cut-off events. [2024-11-17 03:07:23,363 INFO L125 PetriNetUnfolderBase]: For 3960/4296 co-relation queries the response was YES. [2024-11-17 03:07:23,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37837 conditions, 15178 events. 9419/15178 cut-off events. For 3960/4296 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 115901 event pairs, 4372 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37828. Up to 9649 conditions per place. [2024-11-17 03:07:23,462 INFO L140 encePairwiseOnDemand]: 135/148 looper letters, 208 selfloop transitions, 15 changer transitions 0/239 dead transitions. [2024-11-17 03:07:23,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 239 transitions, 1427 flow [2024-11-17 03:07:23,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:23,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:23,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-17 03:07:23,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-11-17 03:07:23,465 INFO L175 Difference]: Start difference. First operand has 120 places, 175 transitions, 750 flow. Second operand 3 states and 224 transitions. [2024-11-17 03:07:23,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 239 transitions, 1427 flow [2024-11-17 03:07:23,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 239 transitions, 1413 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:07:23,483 INFO L231 Difference]: Finished difference. Result has 122 places, 184 transitions, 872 flow [2024-11-17 03:07:23,484 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=872, PETRI_PLACES=122, PETRI_TRANSITIONS=184} [2024-11-17 03:07:23,485 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -12 predicate places. [2024-11-17 03:07:23,485 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 184 transitions, 872 flow [2024-11-17 03:07:23,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:23,486 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:23,486 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:23,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-17 03:07:23,487 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:23,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 972397762, now seen corresponding path program 1 times [2024-11-17 03:07:23,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:23,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381468062] [2024-11-17 03:07:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381468062] [2024-11-17 03:07:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381468062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:23,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:23,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-17 03:07:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122286076] [2024-11-17 03:07:23,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:23,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-17 03:07:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-17 03:07:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-17 03:07:23,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:23,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 184 transitions, 872 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:23,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:23,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:23,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:25,970 INFO L124 PetriNetUnfolderBase]: 15101/24225 cut-off events. [2024-11-17 03:07:25,971 INFO L125 PetriNetUnfolderBase]: For 8476/8908 co-relation queries the response was YES. [2024-11-17 03:07:26,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63270 conditions, 24225 events. 15101/24225 cut-off events. For 8476/8908 co-relation queries the response was YES. Maximal size of possible extension queue 1547. Compared 189849 event pairs, 4630 based on Foata normal form. 225/16362 useless extension candidates. Maximal degree in co-relation 63260. Up to 14517 conditions per place. [2024-11-17 03:07:26,218 INFO L140 encePairwiseOnDemand]: 135/148 looper letters, 418 selfloop transitions, 35 changer transitions 0/472 dead transitions. [2024-11-17 03:07:26,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 472 transitions, 3148 flow [2024-11-17 03:07:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-17 03:07:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-17 03:07:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2024-11-17 03:07:26,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.518918918918919 [2024-11-17 03:07:26,224 INFO L175 Difference]: Start difference. First operand has 122 places, 184 transitions, 872 flow. Second operand 5 states and 384 transitions. [2024-11-17 03:07:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 472 transitions, 3148 flow [2024-11-17 03:07:26,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 472 transitions, 3086 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:07:26,306 INFO L231 Difference]: Finished difference. Result has 127 places, 218 transitions, 1196 flow [2024-11-17 03:07:26,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1196, PETRI_PLACES=127, PETRI_TRANSITIONS=218} [2024-11-17 03:07:26,307 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -7 predicate places. [2024-11-17 03:07:26,307 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 218 transitions, 1196 flow [2024-11-17 03:07:26,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:26,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:26,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:26,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-17 03:07:26,308 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:26,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:26,309 INFO L85 PathProgramCache]: Analyzing trace with hash 973389619, now seen corresponding path program 1 times [2024-11-17 03:07:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:26,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026787125] [2024-11-17 03:07:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:26,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:26,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:26,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026787125] [2024-11-17 03:07:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026787125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:26,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:26,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29415231] [2024-11-17 03:07:26,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:26,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:26,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:26,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:26,388 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 148 [2024-11-17 03:07:26,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 218 transitions, 1196 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:26,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:26,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 148 [2024-11-17 03:07:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:29,402 INFO L124 PetriNetUnfolderBase]: 15494/24609 cut-off events. [2024-11-17 03:07:29,402 INFO L125 PetriNetUnfolderBase]: For 10054/10072 co-relation queries the response was YES. [2024-11-17 03:07:29,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68215 conditions, 24609 events. 15494/24609 cut-off events. For 10054/10072 co-relation queries the response was YES. Maximal size of possible extension queue 1532. Compared 194157 event pairs, 5780 based on Foata normal form. 0/17880 useless extension candidates. Maximal degree in co-relation 68202. Up to 14525 conditions per place. [2024-11-17 03:07:29,556 INFO L140 encePairwiseOnDemand]: 135/148 looper letters, 256 selfloop transitions, 17 changer transitions 0/290 dead transitions. [2024-11-17 03:07:29,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 290 transitions, 2061 flow [2024-11-17 03:07:29,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:29,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:29,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-11-17 03:07:29,557 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-11-17 03:07:29,558 INFO L175 Difference]: Start difference. First operand has 127 places, 218 transitions, 1196 flow. Second operand 3 states and 224 transitions. [2024-11-17 03:07:29,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 290 transitions, 2061 flow [2024-11-17 03:07:29,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 290 transitions, 2061 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-17 03:07:29,602 INFO L231 Difference]: Finished difference. Result has 131 places, 228 transitions, 1357 flow [2024-11-17 03:07:29,603 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1196, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1357, PETRI_PLACES=131, PETRI_TRANSITIONS=228} [2024-11-17 03:07:29,603 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -3 predicate places. [2024-11-17 03:07:29,603 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 228 transitions, 1357 flow [2024-11-17 03:07:29,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:29,604 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:29,604 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:29,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-17 03:07:29,604 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:29,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 973389620, now seen corresponding path program 1 times [2024-11-17 03:07:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174195763] [2024-11-17 03:07:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:29,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174195763] [2024-11-17 03:07:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174195763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:29,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:29,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299828785] [2024-11-17 03:07:29,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:29,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:29,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 148 [2024-11-17 03:07:29,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 228 transitions, 1357 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:29,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:29,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 148 [2024-11-17 03:07:29,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:31,770 INFO L124 PetriNetUnfolderBase]: 14236/22712 cut-off events. [2024-11-17 03:07:31,770 INFO L125 PetriNetUnfolderBase]: For 16036/16054 co-relation queries the response was YES. [2024-11-17 03:07:31,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65683 conditions, 22712 events. 14236/22712 cut-off events. For 16036/16054 co-relation queries the response was YES. Maximal size of possible extension queue 1417. Compared 177554 event pairs, 5666 based on Foata normal form. 468/17600 useless extension candidates. Maximal degree in co-relation 65668. Up to 12734 conditions per place. [2024-11-17 03:07:31,930 INFO L140 encePairwiseOnDemand]: 142/148 looper letters, 240 selfloop transitions, 9 changer transitions 0/268 dead transitions. [2024-11-17 03:07:31,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 268 transitions, 2006 flow [2024-11-17 03:07:31,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:31,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 204 transitions. [2024-11-17 03:07:31,931 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-11-17 03:07:31,931 INFO L175 Difference]: Start difference. First operand has 131 places, 228 transitions, 1357 flow. Second operand 3 states and 204 transitions. [2024-11-17 03:07:31,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 268 transitions, 2006 flow [2024-11-17 03:07:32,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 268 transitions, 1964 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-17 03:07:32,009 INFO L231 Difference]: Finished difference. Result has 128 places, 221 transitions, 1291 flow [2024-11-17 03:07:32,010 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1291, PETRI_PLACES=128, PETRI_TRANSITIONS=221} [2024-11-17 03:07:32,011 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -6 predicate places. [2024-11-17 03:07:32,011 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 221 transitions, 1291 flow [2024-11-17 03:07:32,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:32,011 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:32,011 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:32,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-17 03:07:32,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:32,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash 973389621, now seen corresponding path program 1 times [2024-11-17 03:07:32,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:32,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583601598] [2024-11-17 03:07:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:32,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:32,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:32,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583601598] [2024-11-17 03:07:32,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583601598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:32,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:32,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:07:32,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830659839] [2024-11-17 03:07:32,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:32,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:32,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:32,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:32,173 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:32,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 221 transitions, 1291 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:32,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:32,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:32,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:34,465 INFO L124 PetriNetUnfolderBase]: 13230/21199 cut-off events. [2024-11-17 03:07:34,466 INFO L125 PetriNetUnfolderBase]: For 13441/13567 co-relation queries the response was YES. [2024-11-17 03:07:34,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60647 conditions, 21199 events. 13230/21199 cut-off events. For 13441/13567 co-relation queries the response was YES. Maximal size of possible extension queue 1329. Compared 162670 event pairs, 5922 based on Foata normal form. 54/16129 useless extension candidates. Maximal degree in co-relation 60632. Up to 10456 conditions per place. [2024-11-17 03:07:34,623 INFO L140 encePairwiseOnDemand]: 135/148 looper letters, 261 selfloop transitions, 17 changer transitions 0/297 dead transitions. [2024-11-17 03:07:34,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 297 transitions, 2187 flow [2024-11-17 03:07:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:34,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 234 transitions. [2024-11-17 03:07:34,624 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.527027027027027 [2024-11-17 03:07:34,625 INFO L175 Difference]: Start difference. First operand has 128 places, 221 transitions, 1291 flow. Second operand 3 states and 234 transitions. [2024-11-17 03:07:34,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 297 transitions, 2187 flow [2024-11-17 03:07:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 297 transitions, 2167 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:07:34,689 INFO L231 Difference]: Finished difference. Result has 129 places, 221 transitions, 1332 flow [2024-11-17 03:07:34,689 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1332, PETRI_PLACES=129, PETRI_TRANSITIONS=221} [2024-11-17 03:07:34,691 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -5 predicate places. [2024-11-17 03:07:34,691 INFO L471 AbstractCegarLoop]: Abstraction has has 129 places, 221 transitions, 1332 flow [2024-11-17 03:07:34,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:34,691 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:34,692 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:34,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-17 03:07:34,692 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:34,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:34,693 INFO L85 PathProgramCache]: Analyzing trace with hash 973389622, now seen corresponding path program 1 times [2024-11-17 03:07:34,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:34,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195215874] [2024-11-17 03:07:34,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:34,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:34,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195215874] [2024-11-17 03:07:34,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195215874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:34,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-17 03:07:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328633959] [2024-11-17 03:07:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:34,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-17 03:07:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:34,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-17 03:07:34,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-17 03:07:34,863 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 148 [2024-11-17 03:07:34,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 221 transitions, 1332 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:34,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:34,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 148 [2024-11-17 03:07:34,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-17 03:07:36,917 INFO L124 PetriNetUnfolderBase]: 11997/19228 cut-off events. [2024-11-17 03:07:36,918 INFO L125 PetriNetUnfolderBase]: For 14737/14791 co-relation queries the response was YES. [2024-11-17 03:07:36,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57085 conditions, 19228 events. 11997/19228 cut-off events. For 14737/14791 co-relation queries the response was YES. Maximal size of possible extension queue 1190. Compared 145553 event pairs, 7818 based on Foata normal form. 210/15157 useless extension candidates. Maximal degree in co-relation 57069. Up to 18083 conditions per place. [2024-11-17 03:07:37,059 INFO L140 encePairwiseOnDemand]: 143/148 looper letters, 195 selfloop transitions, 1 changer transitions 0/215 dead transitions. [2024-11-17 03:07:37,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 215 transitions, 1700 flow [2024-11-17 03:07:37,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-17 03:07:37,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-17 03:07:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 159 transitions. [2024-11-17 03:07:37,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-11-17 03:07:37,061 INFO L175 Difference]: Start difference. First operand has 129 places, 221 transitions, 1332 flow. Second operand 3 states and 159 transitions. [2024-11-17 03:07:37,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 215 transitions, 1700 flow [2024-11-17 03:07:37,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 215 transitions, 1666 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-17 03:07:37,129 INFO L231 Difference]: Finished difference. Result has 125 places, 215 transitions, 1276 flow [2024-11-17 03:07:37,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=148, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1276, PETRI_PLACES=125, PETRI_TRANSITIONS=215} [2024-11-17 03:07:37,130 INFO L277 CegarLoopForPetriNet]: 134 programPoint places, -9 predicate places. [2024-11-17 03:07:37,130 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 215 transitions, 1276 flow [2024-11-17 03:07:37,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:37,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:37,130 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-17 03:07:37,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-17 03:07:37,131 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2024-11-17 03:07:37,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:37,131 INFO L85 PathProgramCache]: Analyzing trace with hash -520578944, now seen corresponding path program 1 times [2024-11-17 03:07:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912502008] [2024-11-17 03:07:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:37,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:37,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-17 03:07:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-17 03:07:37,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-17 03:07:37,155 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-17 03:07:37,156 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2024-11-17 03:07:37,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2024-11-17 03:07:37,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2024-11-17 03:07:37,156 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2024-11-17 03:07:37,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2024-11-17 03:07:37,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2024-11-17 03:07:37,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2024-11-17 03:07:37,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (108 of 116 remaining) [2024-11-17 03:07:37,157 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2024-11-17 03:07:37,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (106 of 116 remaining) [2024-11-17 03:07:37,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2024-11-17 03:07:37,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2024-11-17 03:07:37,158 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2024-11-17 03:07:37,159 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2024-11-17 03:07:37,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2024-11-17 03:07:37,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2024-11-17 03:07:37,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2024-11-17 03:07:37,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (69 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2024-11-17 03:07:37,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2024-11-17 03:07:37,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2024-11-17 03:07:37,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2024-11-17 03:07:37,167 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2024-11-17 03:07:37,168 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19ASSERT_VIOLATIONMEMORY_LEAK (31 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 116 remaining) [2024-11-17 03:07:37,169 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2024-11-17 03:07:37,170 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2024-11-17 03:07:37,171 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2024-11-17 03:07:37,172 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2024-11-17 03:07:37,174 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2024-11-17 03:07:37,175 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2024-11-17 03:07:37,176 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2024-11-17 03:07:37,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-17 03:07:37,176 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-17 03:07:37,177 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-17 03:07:37,177 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-17 03:07:37,343 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-17 03:07:37,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 217 transitions, 452 flow [2024-11-17 03:07:37,387 INFO L124 PetriNetUnfolderBase]: 31/240 cut-off events. [2024-11-17 03:07:37,388 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-17 03:07:37,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 240 events. 31/240 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1380 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 212. Up to 8 conditions per place. [2024-11-17 03:07:37,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 217 transitions, 452 flow [2024-11-17 03:07:37,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 196 places, 217 transitions, 452 flow [2024-11-17 03:07:37,398 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-17 03:07:37,399 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;@b1ca75a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-17 03:07:37,399 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2024-11-17 03:07:37,400 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-17 03:07:37,400 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2024-11-17 03:07:37,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-17 03:07:37,401 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-17 03:07:37,401 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-17 03:07:37,401 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err37REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2024-11-17 03:07:37,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-17 03:07:37,401 INFO L85 PathProgramCache]: Analyzing trace with hash 27768352, now seen corresponding path program 1 times [2024-11-17 03:07:37,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-17 03:07:37,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399276013] [2024-11-17 03:07:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-17 03:07:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-17 03:07:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-17 03:07:37,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-17 03:07:37,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-17 03:07:37,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399276013] [2024-11-17 03:07:37,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399276013] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-17 03:07:37,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-17 03:07:37,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-17 03:07:37,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248455610] [2024-11-17 03:07:37,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-17 03:07:37,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-17 03:07:37,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-17 03:07:37,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-17 03:07:37,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-17 03:07:37,412 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 217 [2024-11-17 03:07:37,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 217 transitions, 452 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-17 03:07:37,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-17 03:07:37,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 217 [2024-11-17 03:07:37,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand