./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant-pthread.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 19:41:53,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 19:41:53,493 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 19:41:53,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 19:41:53,497 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 19:41:53,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 19:41:53,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 19:41:53,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 19:41:53,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 19:41:53,523 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 19:41:53,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 19:41:53,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 19:41:53,524 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 19:41:53,524 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 19:41:53,524 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 19:41:53,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 19:41:53,525 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 19:41:53,525 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 19:41:53,525 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 19:41:53,526 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 19:41:53,526 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 19:41:53,526 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 19:41:53,527 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 19:41:53,527 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 19:41:53,527 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 19:41:53,527 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 19:41:53,527 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 19:41:53,528 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 19:41:53,528 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 19:41:53,531 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 19:41:53,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 19:41:53,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 19:41:53,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 19:41:53,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:41:53,532 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 19:41:53,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 19:41:53,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 19:41:53,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 19:41:53,533 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 19:41:53,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 19:41:53,533 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 19:41:53,534 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 19:41:53,534 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ff08c0361e0fdb1af5d85b333c023f31932563eeba591605f3b3b9ddd16afc8 [2024-10-11 19:41:53,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 19:41:53,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 19:41:53,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 19:41:53,800 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 19:41:53,800 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 19:41:53,801 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant-pthread.i [2024-10-11 19:41:55,192 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 19:41:55,419 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 19:41:55,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/sssc12_variant-pthread.i [2024-10-11 19:41:55,438 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/adb1108ae/9de6f1054263422d950e7686c39cd5e3/FLAGd8d29fbf0 [2024-10-11 19:41:55,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/adb1108ae/9de6f1054263422d950e7686c39cd5e3 [2024-10-11 19:41:55,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 19:41:55,771 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 19:41:55,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 19:41:55,773 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 19:41:55,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 19:41:55,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:41:55" (1/1) ... [2024-10-11 19:41:55,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c59a474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:55, skipping insertion in model container [2024-10-11 19:41:55,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 07:41:55" (1/1) ... [2024-10-11 19:41:55,829 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 19:41:56,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:41:56,294 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 19:41:56,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 19:41:56,405 INFO L204 MainTranslator]: Completed translation [2024-10-11 19:41:56,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56 WrapperNode [2024-10-11 19:41:56,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 19:41:56,411 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 19:41:56,411 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 19:41:56,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 19:41:56,421 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,464 INFO L138 Inliner]: procedures = 272, calls = 22, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 79 [2024-10-11 19:41:56,464 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 19:41:56,465 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 19:41:56,465 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 19:41:56,465 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 19:41:56,474 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,477 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,489 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 5, 3]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 2 writes are split as follows [0, 0, 2]. [2024-10-11 19:41:56,489 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,490 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,496 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,503 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,504 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,509 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 19:41:56,510 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 19:41:56,510 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 19:41:56,510 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 19:41:56,510 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (1/1) ... [2024-10-11 19:41:56,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 19:41:56,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 19:41:56,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 19:41:56,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 19:41:56,582 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2024-10-11 19:41:56,582 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 19:41:56,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 19:41:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 19:41:56,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 19:41:56,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 19:41:56,586 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 19:41:56,684 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 19:41:56,686 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 19:41:56,818 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 19:41:56,819 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 19:41:56,943 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 19:41:56,943 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 19:41:56,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:41:56 BoogieIcfgContainer [2024-10-11 19:41:56,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 19:41:56,945 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 19:41:56,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 19:41:56,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 19:41:56,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 07:41:55" (1/3) ... [2024-10-11 19:41:56,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12caf8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:41:56, skipping insertion in model container [2024-10-11 19:41:56,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 07:41:56" (2/3) ... [2024-10-11 19:41:56,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12caf8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 07:41:56, skipping insertion in model container [2024-10-11 19:41:56,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 07:41:56" (3/3) ... [2024-10-11 19:41:56,954 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12_variant-pthread.i [2024-10-11 19:41:56,969 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 19:41:56,969 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-11 19:41:56,969 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 19:41:57,009 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:41:57,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 32 transitions, 68 flow [2024-10-11 19:41:57,074 INFO L124 PetriNetUnfolderBase]: 3/36 cut-off events. [2024-10-11 19:41:57,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:41:57,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2024-10-11 19:41:57,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 32 transitions, 68 flow [2024-10-11 19:41:57,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 32 transitions, 68 flow [2024-10-11 19:41:57,093 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:41:57,102 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;@47e0dfe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:41:57,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2024-10-11 19:41:57,108 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:41:57,108 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:41:57,109 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:41:57,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:57,110 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:41:57,110 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-10-11 19:41:57,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:57,116 INFO L85 PathProgramCache]: Analyzing trace with hash 265316, now seen corresponding path program 1 times [2024-10-11 19:41:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430003318] [2024-10-11 19:41:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:41:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:41:57,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:41:57,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430003318] [2024-10-11 19:41:57,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430003318] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:41:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:41:57,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:41:57,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011236696] [2024-10-11 19:41:57,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:41:57,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:41:57,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:41:57,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:41:57,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:41:57,410 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-10-11 19:41:57,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 68 flow. Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-10-11 19:41:57,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:41:57,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-10-11 19:41:57,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:41:57,476 INFO L124 PetriNetUnfolderBase]: 17/84 cut-off events. [2024-10-11 19:41:57,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:41:57,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 84 events. 17/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 267 event pairs, 14 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 119. Up to 44 conditions per place. [2024-10-11 19:41:57,481 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 12 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2024-10-11 19:41:57,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 80 flow [2024-10-11 19:41:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:41:57,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:41:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 45 transitions. [2024-10-11 19:41:57,498 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.703125 [2024-10-11 19:41:57,500 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 68 flow. Second operand 2 states and 45 transitions. [2024-10-11 19:41:57,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 80 flow [2024-10-11 19:41:57,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 80 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:41:57,505 INFO L231 Difference]: Finished difference. Result has 29 places, 26 transitions, 56 flow [2024-10-11 19:41:57,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=29, PETRI_TRANSITIONS=26} [2024-10-11 19:41:57,512 INFO L277 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2024-10-11 19:41:57,512 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 26 transitions, 56 flow [2024-10-11 19:41:57,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 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) [2024-10-11 19:41:57,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:57,513 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-11 19:41:57,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 19:41:57,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2024-10-11 19:41:57,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:57,514 INFO L85 PathProgramCache]: Analyzing trace with hash -685598034, now seen corresponding path program 1 times [2024-10-11 19:41:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198527561] [2024-10-11 19:41:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:57,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:41:57,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:41:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:41:57,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:41:57,595 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:41:57,597 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2024-10-11 19:41:57,598 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 16 remaining) [2024-10-11 19:41:57,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 16 remaining) [2024-10-11 19:41:57,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 16 remaining) [2024-10-11 19:41:57,599 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 16 remaining) [2024-10-11 19:41:57,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 16 remaining) [2024-10-11 19:41:57,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 16 remaining) [2024-10-11 19:41:57,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 16 remaining) [2024-10-11 19:41:57,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 16 remaining) [2024-10-11 19:41:57,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 16 remaining) [2024-10-11 19:41:57,601 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 16 remaining) [2024-10-11 19:41:57,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 16 remaining) [2024-10-11 19:41:57,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 16 remaining) [2024-10-11 19:41:57,602 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 16 remaining) [2024-10-11 19:41:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 16 remaining) [2024-10-11 19:41:57,603 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 16 remaining) [2024-10-11 19:41:57,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 19:41:57,603 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:41:57,607 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:41:57,607 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 19:41:57,645 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:41:57,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 57 transitions, 124 flow [2024-10-11 19:41:57,673 INFO L124 PetriNetUnfolderBase]: 6/66 cut-off events. [2024-10-11 19:41:57,673 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 19:41:57,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 66 events. 6/66 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 174 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 53. Up to 3 conditions per place. [2024-10-11 19:41:57,674 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 57 transitions, 124 flow [2024-10-11 19:41:57,675 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 57 transitions, 124 flow [2024-10-11 19:41:57,675 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:41:57,676 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;@47e0dfe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:41:57,676 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 19:41:57,678 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:41:57,678 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:41:57,678 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:41:57,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:57,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:41:57,679 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-11 19:41:57,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:57,680 INFO L85 PathProgramCache]: Analyzing trace with hash 321917, now seen corresponding path program 1 times [2024-10-11 19:41:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:57,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625020070] [2024-10-11 19:41:57,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:41:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:41:57,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:41:57,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625020070] [2024-10-11 19:41:57,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625020070] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:41:57,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:41:57,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:41:57,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230814856] [2024-10-11 19:41:57,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:41:57,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:41:57,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:41:57,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:41:57,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:41:57,730 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 57 [2024-10-11 19:41:57,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 124 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) [2024-10-11 19:41:57,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:41:57,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 57 [2024-10-11 19:41:57,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:41:57,919 INFO L124 PetriNetUnfolderBase]: 409/1275 cut-off events. [2024-10-11 19:41:57,919 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-10-11 19:41:57,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1956 conditions, 1275 events. 409/1275 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8914 event pairs, 325 based on Foata normal form. 114/1104 useless extension candidates. Maximal degree in co-relation 1448. Up to 652 conditions per place. [2024-10-11 19:41:57,930 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 21 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2024-10-11 19:41:57,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 148 flow [2024-10-11 19:41:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:41:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:41:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 82 transitions. [2024-10-11 19:41:57,932 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-10-11 19:41:57,932 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 124 flow. Second operand 2 states and 82 transitions. [2024-10-11 19:41:57,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 148 flow [2024-10-11 19:41:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:41:57,934 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 106 flow [2024-10-11 19:41:57,934 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-10-11 19:41:57,935 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -4 predicate places. [2024-10-11 19:41:57,935 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 106 flow [2024-10-11 19:41:57,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-10-11 19:41:57,935 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:57,935 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-11 19:41:57,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 19:41:57,936 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2024-10-11 19:41:57,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:57,936 INFO L85 PathProgramCache]: Analyzing trace with hash -910682474, now seen corresponding path program 1 times [2024-10-11 19:41:57,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:57,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056470969] [2024-10-11 19:41:57,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:57,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:57,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:41:57,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:41:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:41:57,985 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:41:57,986 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (21 of 23 remaining) [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 23 remaining) [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 23 remaining) [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 23 remaining) [2024-10-11 19:41:57,986 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 23 remaining) [2024-10-11 19:41:57,987 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 23 remaining) [2024-10-11 19:41:57,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 23 remaining) [2024-10-11 19:41:57,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 23 remaining) [2024-10-11 19:41:57,988 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 23 remaining) [2024-10-11 19:41:57,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 23 remaining) [2024-10-11 19:41:57,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 23 remaining) [2024-10-11 19:41:57,993 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 23 remaining) [2024-10-11 19:41:57,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 19:41:57,993 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-11 19:41:57,994 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:41:57,994 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 19:41:58,017 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:41:58,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 82 transitions, 182 flow [2024-10-11 19:41:58,046 INFO L124 PetriNetUnfolderBase]: 9/96 cut-off events. [2024-10-11 19:41:58,046 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-11 19:41:58,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 9/96 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 323 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2024-10-11 19:41:58,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 82 transitions, 182 flow [2024-10-11 19:41:58,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 82 transitions, 182 flow [2024-10-11 19:41:58,049 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:41:58,049 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;@47e0dfe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:41:58,049 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-10-11 19:41:58,051 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:41:58,051 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:41:58,051 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:41:58,051 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:58,051 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:41:58,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:41:58,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash 403343, now seen corresponding path program 1 times [2024-10-11 19:41:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:58,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133374180] [2024-10-11 19:41:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:41:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:41:58,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:41:58,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133374180] [2024-10-11 19:41:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133374180] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:41:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:41:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:41:58,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064252998] [2024-10-11 19:41:58,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:41:58,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:41:58,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:41:58,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:41:58,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:41:58,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 82 [2024-10-11 19:41:58,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-10-11 19:41:58,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:41:58,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 82 [2024-10-11 19:41:58,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:41:59,285 INFO L124 PetriNetUnfolderBase]: 6301/15930 cut-off events. [2024-10-11 19:41:59,286 INFO L125 PetriNetUnfolderBase]: For 506/506 co-relation queries the response was YES. [2024-10-11 19:41:59,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24790 conditions, 15930 events. 6301/15930 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 165879 event pairs, 4948 based on Foata normal form. 1572/13856 useless extension candidates. Maximal degree in co-relation 7164. Up to 8542 conditions per place. [2024-10-11 19:41:59,402 INFO L140 encePairwiseOnDemand]: 75/82 looper letters, 30 selfloop transitions, 0 changer transitions 0/70 dead transitions. [2024-10-11 19:41:59,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 218 flow [2024-10-11 19:41:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:41:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:41:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 119 transitions. [2024-10-11 19:41:59,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.725609756097561 [2024-10-11 19:41:59,404 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 182 flow. Second operand 2 states and 119 transitions. [2024-10-11 19:41:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 218 flow [2024-10-11 19:41:59,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 216 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-11 19:41:59,407 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 156 flow [2024-10-11 19:41:59,407 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2024-10-11 19:41:59,408 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -5 predicate places. [2024-10-11 19:41:59,408 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 156 flow [2024-10-11 19:41:59,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 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) [2024-10-11 19:41:59,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:41:59,408 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:41:59,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 19:41:59,409 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:41:59,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:41:59,409 INFO L85 PathProgramCache]: Analyzing trace with hash -581813182, now seen corresponding path program 1 times [2024-10-11 19:41:59,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:41:59,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780851054] [2024-10-11 19:41:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:41:59,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:41:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:41:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:41:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:41:59,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780851054] [2024-10-11 19:41:59,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780851054] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:41:59,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:41:59,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:41:59,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609037455] [2024-10-11 19:41:59,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:41:59,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:41:59,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:41:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:41:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:41:59,557 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 82 [2024-10-11 19:41:59,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2024-10-11 19:41:59,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:41:59,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 82 [2024-10-11 19:41:59,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:42:00,920 INFO L124 PetriNetUnfolderBase]: 11513/20722 cut-off events. [2024-10-11 19:42:00,922 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-10-11 19:42:00,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36718 conditions, 20722 events. 11513/20722 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 168427 event pairs, 9521 based on Foata normal form. 0/20537 useless extension candidates. Maximal degree in co-relation 36712. Up to 15622 conditions per place. [2024-10-11 19:42:01,037 INFO L140 encePairwiseOnDemand]: 72/82 looper letters, 35 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2024-10-11 19:42:01,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 61 transitions, 210 flow [2024-10-11 19:42:01,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 19:42:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 19:42:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-10-11 19:42:01,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-11 19:42:01,039 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 156 flow. Second operand 3 states and 123 transitions. [2024-10-11 19:42:01,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 61 transitions, 210 flow [2024-10-11 19:42:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 19:42:01,041 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 140 flow [2024-10-11 19:42:01,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-10-11 19:42:01,042 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -12 predicate places. [2024-10-11 19:42:01,042 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 140 flow [2024-10-11 19:42:01,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 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) [2024-10-11 19:42:01,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:42:01,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:42:01,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 19:42:01,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:42:01,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:42:01,044 INFO L85 PathProgramCache]: Analyzing trace with hash -581813181, now seen corresponding path program 1 times [2024-10-11 19:42:01,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:42:01,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811039559] [2024-10-11 19:42:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:42:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:42:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:42:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:42:01,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:42:01,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811039559] [2024-10-11 19:42:01,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811039559] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:42:01,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:42:01,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 19:42:01,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110857031] [2024-10-11 19:42:01,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:42:01,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 19:42:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:42:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 19:42:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-11 19:42:01,455 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 82 [2024-10-11 19:42:01,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 140 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-10-11 19:42:01,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:42:01,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 82 [2024-10-11 19:42:01,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:42:03,017 INFO L124 PetriNetUnfolderBase]: 11575/22683 cut-off events. [2024-10-11 19:42:03,018 INFO L125 PetriNetUnfolderBase]: For 458/458 co-relation queries the response was YES. [2024-10-11 19:42:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38908 conditions, 22683 events. 11575/22683 cut-off events. For 458/458 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 206922 event pairs, 2206 based on Foata normal form. 0/19812 useless extension candidates. Maximal degree in co-relation 38901. Up to 6074 conditions per place. [2024-10-11 19:42:03,144 INFO L140 encePairwiseOnDemand]: 71/82 looper letters, 89 selfloop transitions, 12 changer transitions 0/126 dead transitions. [2024-10-11 19:42:03,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 126 transitions, 512 flow [2024-10-11 19:42:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 19:42:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 19:42:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 314 transitions. [2024-10-11 19:42:03,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6382113821138211 [2024-10-11 19:42:03,147 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 140 flow. Second operand 6 states and 314 transitions. [2024-10-11 19:42:03,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 126 transitions, 512 flow [2024-10-11 19:42:03,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 126 transitions, 511 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 19:42:03,151 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 213 flow [2024-10-11 19:42:03,151 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=82, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-10-11 19:42:03,152 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -5 predicate places. [2024-10-11 19:42:03,152 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 213 flow [2024-10-11 19:42:03,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-10-11 19:42:03,152 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:42:03,152 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-10-11 19:42:03,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 19:42:03,152 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-10-11 19:42:03,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:42:03,153 INFO L85 PathProgramCache]: Analyzing trace with hash -802830355, now seen corresponding path program 1 times [2024-10-11 19:42:03,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:42:03,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495776405] [2024-10-11 19:42:03,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:42:03,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:42:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:42:03,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 19:42:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 19:42:03,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 19:42:03,176 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 19:42:03,176 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (28 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 30 remaining) [2024-10-11 19:42:03,177 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (21 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 30 remaining) [2024-10-11 19:42:03,178 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 30 remaining) [2024-10-11 19:42:03,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (14 of 30 remaining) [2024-10-11 19:42:03,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 30 remaining) [2024-10-11 19:42:03,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 30 remaining) [2024-10-11 19:42:03,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 30 remaining) [2024-10-11 19:42:03,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 30 remaining) [2024-10-11 19:42:03,181 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (7 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 30 remaining) [2024-10-11 19:42:03,182 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 30 remaining) [2024-10-11 19:42:03,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 19:42:03,183 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-11 19:42:03,183 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 19:42:03,183 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-11 19:42:03,212 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-11 19:42:03,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 107 transitions, 242 flow [2024-10-11 19:42:03,225 INFO L124 PetriNetUnfolderBase]: 12/126 cut-off events. [2024-10-11 19:42:03,226 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 19:42:03,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 126 events. 12/126 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 462 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 108. Up to 5 conditions per place. [2024-10-11 19:42:03,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 107 transitions, 242 flow [2024-10-11 19:42:03,229 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 107 transitions, 242 flow [2024-10-11 19:42:03,230 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 19:42:03,231 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;@47e0dfe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 19:42:03,232 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-10-11 19:42:03,233 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 19:42:03,233 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-11 19:42:03,233 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 19:42:03,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:42:03,233 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-11 19:42:03,234 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-10-11 19:42:03,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:42:03,234 INFO L85 PathProgramCache]: Analyzing trace with hash 509594, now seen corresponding path program 1 times [2024-10-11 19:42:03,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:42:03,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125762243] [2024-10-11 19:42:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:42:03,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:42:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:42:03,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:42:03,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:42:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125762243] [2024-10-11 19:42:03,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125762243] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:42:03,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:42:03,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 19:42:03,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282712387] [2024-10-11 19:42:03,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:42:03,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 19:42:03,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:42:03,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 19:42:03,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 19:42:03,249 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 107 [2024-10-11 19:42:03,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 107 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:42:03,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:42:03,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 107 [2024-10-11 19:42:03,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 19:42:14,639 INFO L124 PetriNetUnfolderBase]: 79731/172664 cut-off events. [2024-10-11 19:42:14,639 INFO L125 PetriNetUnfolderBase]: For 7903/7903 co-relation queries the response was YES. [2024-10-11 19:42:15,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276351 conditions, 172664 events. 79731/172664 cut-off events. For 7903/7903 co-relation queries the response was YES. Maximal size of possible extension queue 5970. Compared 2223909 event pairs, 62793 based on Foata normal form. 18627/154596 useless extension candidates. Maximal degree in co-relation 26460. Up to 100038 conditions per place. [2024-10-11 19:42:16,177 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 39 selfloop transitions, 0 changer transitions 0/92 dead transitions. [2024-10-11 19:42:16,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 92 transitions, 290 flow [2024-10-11 19:42:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 19:42:16,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-11 19:42:16,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 156 transitions. [2024-10-11 19:42:16,179 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-10-11 19:42:16,179 INFO L175 Difference]: Start difference. First operand has 104 places, 107 transitions, 242 flow. Second operand 2 states and 156 transitions. [2024-10-11 19:42:16,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 92 transitions, 290 flow [2024-10-11 19:42:16,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 284 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-11 19:42:16,184 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 206 flow [2024-10-11 19:42:16,185 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=206, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2024-10-11 19:42:16,185 INFO L277 CegarLoopForPetriNet]: 104 programPoint places, -6 predicate places. [2024-10-11 19:42:16,185 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 206 flow [2024-10-11 19:42:16,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 55.0) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:42:16,185 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 19:42:16,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 19:42:16,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 19:42:16,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-10-11 19:42:16,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 19:42:16,186 INFO L85 PathProgramCache]: Analyzing trace with hash -239057910, now seen corresponding path program 1 times [2024-10-11 19:42:16,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 19:42:16,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668950895] [2024-10-11 19:42:16,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 19:42:16,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 19:42:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 19:42:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 19:42:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 19:42:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668950895] [2024-10-11 19:42:16,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668950895] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 19:42:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 19:42:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-11 19:42:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756556653] [2024-10-11 19:42:16,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 19:42:16,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 19:42:16,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 19:42:16,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 19:42:16,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 19:42:16,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 107 [2024-10-11 19:42:16,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 206 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 19:42:16,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 19:42:16,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 107 [2024-10-11 19:42:16,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand