./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-ext/36_stack_cas_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 19:26:24,423 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 19:26:24,503 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 19:26:24,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 19:26:24,510 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 19:26:24,539 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 19:26:24,540 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 19:26:24,540 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 19:26:24,541 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 19:26:24,542 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 19:26:24,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 19:26:24,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 19:26:24,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 19:26:24,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 19:26:24,544 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 19:26:24,545 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 19:26:24,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 19:26:24,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 19:26:24,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 19:26:24,546 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 19:26:24,546 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 19:26:24,550 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 19:26:24,550 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 19:26:24,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 19:26:24,550 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 19:26:24,551 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 19:26:24,551 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 19:26:24,551 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 19:26:24,551 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 19:26:24,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 19:26:24,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 19:26:24,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 19:26:24,552 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 19:26:24,552 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:26:24,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 19:26:24,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 19:26:24,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 19:26:24,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 19:26:24,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 19:26:24,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 19:26:24,554 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 19:26:24,555 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 19:26:24,555 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf99dd5722e6551de991a345b21615b777cf7cef3d452afb8b79773fd45d3d8 [2024-10-14 19:26:24,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 19:26:24,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 19:26:24,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 19:26:24,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 19:26:24,817 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 19:26:24,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-10-14 19:26:26,279 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 19:26:26,530 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 19:26:26,531 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/36_stack_cas_p0_vs_concur.i [2024-10-14 19:26:26,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330d41cfe/8fb49c67f78b4a2bab72907c31c1cd26/FLAG01d61440a [2024-10-14 19:26:26,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330d41cfe/8fb49c67f78b4a2bab72907c31c1cd26 [2024-10-14 19:26:26,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 19:26:26,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 19:26:26,571 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 19:26:26,572 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 19:26:26,578 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 19:26:26,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:26:26" (1/1) ... [2024-10-14 19:26:26,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c39dd26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:26, skipping insertion in model container [2024-10-14 19:26:26,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 07:26:26" (1/1) ... [2024-10-14 19:26:26,626 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 19:26:26,909 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:26:26,929 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 19:26:27,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 19:26:27,040 INFO L204 MainTranslator]: Completed translation [2024-10-14 19:26:27,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27 WrapperNode [2024-10-14 19:26:27,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 19:26:27,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 19:26:27,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 19:26:27,042 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 19:26:27,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,090 INFO L138 Inliner]: procedures = 172, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2024-10-14 19:26:27,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 19:26:27,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 19:26:27,093 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 19:26:27,093 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 19:26:27,102 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,122 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 6, 3, 5]. 38 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 0, 1]. The 5 writes are split as follows [0, 2, 2, 1]. [2024-10-14 19:26:27,123 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,138 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,145 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,146 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 19:26:27,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 19:26:27,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 19:26:27,151 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 19:26:27,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (1/1) ... [2024-10-14 19:26:27,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 19:26:27,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 19:26:27,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-14 19:26:27,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-14 19:26:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 19:26:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 19:26:27,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 19:26:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 19:26:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-14 19:26:27,247 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-14 19:26:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 19:26:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 19:26:27,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 19:26:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 19:26:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-14 19:26:27,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 19:26:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 19:26:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 19:26:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 19:26:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 19:26:27,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 19:26:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 19:26:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-14 19:26:27,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 19:26:27,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 19:26:27,253 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-14 19:26:27,493 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 19:26:27,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 19:26:27,804 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-14 19:26:27,807 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 19:26:28,047 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 19:26:28,047 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 19:26:28,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:26:28 BoogieIcfgContainer [2024-10-14 19:26:28,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 19:26:28,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 19:26:28,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 19:26:28,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 19:26:28,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 07:26:26" (1/3) ... [2024-10-14 19:26:28,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1d676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:26:28, skipping insertion in model container [2024-10-14 19:26:28,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 07:26:27" (2/3) ... [2024-10-14 19:26:28,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec1d676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 07:26:28, skipping insertion in model container [2024-10-14 19:26:28,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 07:26:28" (3/3) ... [2024-10-14 19:26:28,058 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2024-10-14 19:26:28,074 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 19:26:28,074 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2024-10-14 19:26:28,074 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-14 19:26:28,155 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:26:28,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 57 transitions, 118 flow [2024-10-14 19:26:28,228 INFO L124 PetriNetUnfolderBase]: 3/61 cut-off events. [2024-10-14 19:26:28,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:26:28,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 3/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 146 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2024-10-14 19:26:28,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 57 transitions, 118 flow [2024-10-14 19:26:28,237 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 57 transitions, 118 flow [2024-10-14 19:26:28,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:26:28,258 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;@6a261a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:26:28,258 INFO L334 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-10-14 19:26:28,260 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:26:28,261 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:26:28,261 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:26:28,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:28,261 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:26:28,262 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-14 19:26:28,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:28,267 INFO L85 PathProgramCache]: Analyzing trace with hash 393755, now seen corresponding path program 1 times [2024-10-14 19:26:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976781465] [2024-10-14 19:26:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:28,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:28,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:28,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976781465] [2024-10-14 19:26:28,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976781465] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:28,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:28,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:28,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754240317] [2024-10-14 19:26:28,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:28,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:26:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:26:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:26:28,476 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 57 [2024-10-14 19:26:28,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2024-10-14 19:26:28,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:28,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 57 [2024-10-14 19:26:28,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:26:28,629 INFO L124 PetriNetUnfolderBase]: 55/191 cut-off events. [2024-10-14 19:26:28,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:26:28,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 191 events. 55/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 712 event pairs, 49 based on Foata normal form. 3/119 useless extension candidates. Maximal degree in co-relation 317. Up to 135 conditions per place. [2024-10-14 19:26:28,634 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 30 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-10-14 19:26:28,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 164 flow [2024-10-14 19:26:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:26:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:26:28,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-10-14 19:26:28,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2024-10-14 19:26:28,654 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 118 flow. Second operand 2 states and 77 transitions. [2024-10-14 19:26:28,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 164 flow [2024-10-14 19:26:28,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 50 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:26:28,660 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 104 flow [2024-10-14 19:26:28,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2024-10-14 19:26:28,665 INFO L277 CegarLoopForPetriNet]: 57 programPoint places, -5 predicate places. [2024-10-14 19:26:28,665 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 104 flow [2024-10-14 19:26:28,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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) [2024-10-14 19:26:28,666 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:28,666 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-14 19:26:28,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 19:26:28,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 57 more)] === [2024-10-14 19:26:28,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1152430758, now seen corresponding path program 1 times [2024-10-14 19:26:28,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:28,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164858039] [2024-10-14 19:26:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:28,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:26:28,698 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:26:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:26:28,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:26:28,730 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:26:28,732 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (59 of 60 remaining) [2024-10-14 19:26:28,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 60 remaining) [2024-10-14 19:26:28,733 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 60 remaining) [2024-10-14 19:26:28,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 60 remaining) [2024-10-14 19:26:28,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 60 remaining) [2024-10-14 19:26:28,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 60 remaining) [2024-10-14 19:26:28,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 60 remaining) [2024-10-14 19:26:28,734 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (50 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 60 remaining) [2024-10-14 19:26:28,735 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 60 remaining) [2024-10-14 19:26:28,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 60 remaining) [2024-10-14 19:26:28,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 60 remaining) [2024-10-14 19:26:28,736 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (43 of 60 remaining) [2024-10-14 19:26:28,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (42 of 60 remaining) [2024-10-14 19:26:28,737 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 60 remaining) [2024-10-14 19:26:28,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 60 remaining) [2024-10-14 19:26:28,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 60 remaining) [2024-10-14 19:26:28,738 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 60 remaining) [2024-10-14 19:26:28,739 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 60 remaining) [2024-10-14 19:26:28,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 60 remaining) [2024-10-14 19:26:28,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 60 remaining) [2024-10-14 19:26:28,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 60 remaining) [2024-10-14 19:26:28,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 60 remaining) [2024-10-14 19:26:28,740 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 60 remaining) [2024-10-14 19:26:28,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 60 remaining) [2024-10-14 19:26:28,741 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 60 remaining) [2024-10-14 19:26:28,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (29 of 60 remaining) [2024-10-14 19:26:28,742 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 60 remaining) [2024-10-14 19:26:28,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 60 remaining) [2024-10-14 19:26:28,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 60 remaining) [2024-10-14 19:26:28,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 60 remaining) [2024-10-14 19:26:28,743 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 60 remaining) [2024-10-14 19:26:28,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 60 remaining) [2024-10-14 19:26:28,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 60 remaining) [2024-10-14 19:26:28,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 60 remaining) [2024-10-14 19:26:28,744 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 60 remaining) [2024-10-14 19:26:28,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 60 remaining) [2024-10-14 19:26:28,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 60 remaining) [2024-10-14 19:26:28,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 60 remaining) [2024-10-14 19:26:28,746 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 60 remaining) [2024-10-14 19:26:28,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 60 remaining) [2024-10-14 19:26:28,747 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 60 remaining) [2024-10-14 19:26:28,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 60 remaining) [2024-10-14 19:26:28,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 60 remaining) [2024-10-14 19:26:28,748 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 60 remaining) [2024-10-14 19:26:28,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 60 remaining) [2024-10-14 19:26:28,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 60 remaining) [2024-10-14 19:26:28,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 60 remaining) [2024-10-14 19:26:28,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 60 remaining) [2024-10-14 19:26:28,749 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 60 remaining) [2024-10-14 19:26:28,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 60 remaining) [2024-10-14 19:26:28,750 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 60 remaining) [2024-10-14 19:26:28,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 60 remaining) [2024-10-14 19:26:28,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 60 remaining) [2024-10-14 19:26:28,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 60 remaining) [2024-10-14 19:26:28,751 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 60 remaining) [2024-10-14 19:26:28,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 19:26:28,753 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-14 19:26:28,756 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:26:28,756 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-14 19:26:28,844 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:26:28,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 107 transitions, 224 flow [2024-10-14 19:26:28,884 INFO L124 PetriNetUnfolderBase]: 6/116 cut-off events. [2024-10-14 19:26:28,886 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-14 19:26:28,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 116 events. 6/116 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 459 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 103. Up to 3 conditions per place. [2024-10-14 19:26:28,888 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 107 transitions, 224 flow [2024-10-14 19:26:28,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 107 transitions, 224 flow [2024-10-14 19:26:28,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:26:28,898 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;@6a261a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:26:28,899 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-10-14 19:26:28,903 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:26:28,903 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:26:28,903 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:26:28,903 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:28,903 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:26:28,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-14 19:26:28,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 500006, now seen corresponding path program 1 times [2024-10-14 19:26:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:28,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81202533] [2024-10-14 19:26:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:28,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:28,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81202533] [2024-10-14 19:26:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81202533] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:28,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941511039] [2024-10-14 19:26:28,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:28,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:26:28,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:26:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:26:28,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 107 [2024-10-14 19:26:28,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 224 flow. Second operand has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-10-14 19:26:28,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:28,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 107 [2024-10-14 19:26:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:26:29,969 INFO L124 PetriNetUnfolderBase]: 3609/7017 cut-off events. [2024-10-14 19:26:29,970 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2024-10-14 19:26:29,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12815 conditions, 7017 events. 3609/7017 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 53265 event pairs, 3291 based on Foata normal form. 159/3914 useless extension candidates. Maximal degree in co-relation 11881. Up to 5715 conditions per place. [2024-10-14 19:26:30,027 INFO L140 encePairwiseOnDemand]: 98/107 looper letters, 57 selfloop transitions, 0 changer transitions 0/96 dead transitions. [2024-10-14 19:26:30,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 96 transitions, 316 flow [2024-10-14 19:26:30,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:26:30,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:26:30,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 146 transitions. [2024-10-14 19:26:30,030 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-10-14 19:26:30,030 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 224 flow. Second operand 2 states and 146 transitions. [2024-10-14 19:26:30,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 96 transitions, 316 flow [2024-10-14 19:26:30,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:26:30,033 INFO L231 Difference]: Finished difference. Result has 98 places, 96 transitions, 202 flow [2024-10-14 19:26:30,033 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=202, PETRI_PLACES=98, PETRI_TRANSITIONS=96} [2024-10-14 19:26:30,034 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -8 predicate places. [2024-10-14 19:26:30,034 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 96 transitions, 202 flow [2024-10-14 19:26:30,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 41.0) internal successors, (82), 2 states have internal predecessors, (82), 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) [2024-10-14 19:26:30,035 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:30,035 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:26:30,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 19:26:30,035 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-14 19:26:30,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2014551393, now seen corresponding path program 1 times [2024-10-14 19:26:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812495598] [2024-10-14 19:26:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:30,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:30,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:30,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:30,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812495598] [2024-10-14 19:26:30,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812495598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:30,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:30,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:30,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416960015] [2024-10-14 19:26:30,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:30,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:26:30,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:26:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:26:30,265 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 107 [2024-10-14 19:26:30,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 96 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-14 19:26:30,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:30,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 107 [2024-10-14 19:26:30,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:26:31,895 INFO L124 PetriNetUnfolderBase]: 7152/13363 cut-off events. [2024-10-14 19:26:31,896 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-10-14 19:26:31,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24739 conditions, 13363 events. 7152/13363 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 102798 event pairs, 2576 based on Foata normal form. 0/7631 useless extension candidates. Maximal degree in co-relation 24734. Up to 6474 conditions per place. [2024-10-14 19:26:31,983 INFO L140 encePairwiseOnDemand]: 93/107 looper letters, 106 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2024-10-14 19:26:31,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 146 transitions, 535 flow [2024-10-14 19:26:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:26:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:26:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 219 transitions. [2024-10-14 19:26:31,986 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6822429906542056 [2024-10-14 19:26:31,986 INFO L175 Difference]: Start difference. First operand has 98 places, 96 transitions, 202 flow. Second operand 3 states and 219 transitions. [2024-10-14 19:26:31,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 146 transitions, 535 flow [2024-10-14 19:26:31,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 535 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-14 19:26:31,990 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 274 flow [2024-10-14 19:26:31,991 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2024-10-14 19:26:31,992 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -4 predicate places. [2024-10-14 19:26:31,992 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 274 flow [2024-10-14 19:26:31,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-10-14 19:26:31,992 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:31,992 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:26:31,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 19:26:31,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-14 19:26:31,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:31,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2014551394, now seen corresponding path program 1 times [2024-10-14 19:26:31,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:31,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954117258] [2024-10-14 19:26:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:31,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:32,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:32,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954117258] [2024-10-14 19:26:32,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954117258] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:32,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:32,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668064636] [2024-10-14 19:26:32,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:32,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:26:32,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:32,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:26:32,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:26:32,190 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 107 [2024-10-14 19:26:32,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 103 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:26:32,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:32,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 107 [2024-10-14 19:26:32,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:26:33,284 INFO L124 PetriNetUnfolderBase]: 5509/10797 cut-off events. [2024-10-14 19:26:33,285 INFO L125 PetriNetUnfolderBase]: For 1474/1549 co-relation queries the response was YES. [2024-10-14 19:26:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21293 conditions, 10797 events. 5509/10797 cut-off events. For 1474/1549 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 83708 event pairs, 1883 based on Foata normal form. 786/7350 useless extension candidates. Maximal degree in co-relation 21286. Up to 7271 conditions per place. [2024-10-14 19:26:33,352 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 85 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2024-10-14 19:26:33,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 126 transitions, 503 flow [2024-10-14 19:26:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 19:26:33,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-14 19:26:33,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 198 transitions. [2024-10-14 19:26:33,355 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.616822429906542 [2024-10-14 19:26:33,355 INFO L175 Difference]: Start difference. First operand has 102 places, 103 transitions, 274 flow. Second operand 3 states and 198 transitions. [2024-10-14 19:26:33,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 126 transitions, 503 flow [2024-10-14 19:26:33,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 487 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-14 19:26:33,371 INFO L231 Difference]: Finished difference. Result has 96 places, 97 transitions, 252 flow [2024-10-14 19:26:33,372 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=96, PETRI_TRANSITIONS=97} [2024-10-14 19:26:33,373 INFO L277 CegarLoopForPetriNet]: 106 programPoint places, -10 predicate places. [2024-10-14 19:26:33,374 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 97 transitions, 252 flow [2024-10-14 19:26:33,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:26:33,375 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:33,375 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-14 19:26:33,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 19:26:33,376 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 86 more)] === [2024-10-14 19:26:33,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash -834140848, now seen corresponding path program 1 times [2024-10-14 19:26:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405768725] [2024-10-14 19:26:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:26:33,404 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 19:26:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 19:26:33,421 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 19:26:33,423 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 19:26:33,423 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (88 of 89 remaining) [2024-10-14 19:26:33,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 89 remaining) [2024-10-14 19:26:33,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 89 remaining) [2024-10-14 19:26:33,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 89 remaining) [2024-10-14 19:26:33,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 89 remaining) [2024-10-14 19:26:33,424 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 89 remaining) [2024-10-14 19:26:33,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 89 remaining) [2024-10-14 19:26:33,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 89 remaining) [2024-10-14 19:26:33,425 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 89 remaining) [2024-10-14 19:26:33,426 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (79 of 89 remaining) [2024-10-14 19:26:33,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 89 remaining) [2024-10-14 19:26:33,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 89 remaining) [2024-10-14 19:26:33,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 89 remaining) [2024-10-14 19:26:33,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 89 remaining) [2024-10-14 19:26:33,429 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (72 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (71 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 89 remaining) [2024-10-14 19:26:33,430 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 89 remaining) [2024-10-14 19:26:33,431 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 89 remaining) [2024-10-14 19:26:33,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 89 remaining) [2024-10-14 19:26:33,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 89 remaining) [2024-10-14 19:26:33,432 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (58 of 89 remaining) [2024-10-14 19:26:33,433 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 89 remaining) [2024-10-14 19:26:33,434 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 89 remaining) [2024-10-14 19:26:33,435 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 89 remaining) [2024-10-14 19:26:33,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 89 remaining) [2024-10-14 19:26:33,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 89 remaining) [2024-10-14 19:26:33,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 89 remaining) [2024-10-14 19:26:33,436 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 89 remaining) [2024-10-14 19:26:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 89 remaining) [2024-10-14 19:26:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (49 of 89 remaining) [2024-10-14 19:26:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 89 remaining) [2024-10-14 19:26:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 89 remaining) [2024-10-14 19:26:33,437 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 89 remaining) [2024-10-14 19:26:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 89 remaining) [2024-10-14 19:26:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 89 remaining) [2024-10-14 19:26:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 89 remaining) [2024-10-14 19:26:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (42 of 89 remaining) [2024-10-14 19:26:33,438 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (41 of 89 remaining) [2024-10-14 19:26:33,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 89 remaining) [2024-10-14 19:26:33,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 89 remaining) [2024-10-14 19:26:33,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 89 remaining) [2024-10-14 19:26:33,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 89 remaining) [2024-10-14 19:26:33,439 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 89 remaining) [2024-10-14 19:26:33,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 89 remaining) [2024-10-14 19:26:33,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 89 remaining) [2024-10-14 19:26:33,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 89 remaining) [2024-10-14 19:26:33,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 89 remaining) [2024-10-14 19:26:33,440 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 89 remaining) [2024-10-14 19:26:33,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 89 remaining) [2024-10-14 19:26:33,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 89 remaining) [2024-10-14 19:26:33,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 89 remaining) [2024-10-14 19:26:33,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 89 remaining) [2024-10-14 19:26:33,441 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 89 remaining) [2024-10-14 19:26:33,442 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONARRAY_INDEX (20 of 89 remaining) [2024-10-14 19:26:33,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 89 remaining) [2024-10-14 19:26:33,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 89 remaining) [2024-10-14 19:26:33,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 89 remaining) [2024-10-14 19:26:33,443 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 89 remaining) [2024-10-14 19:26:33,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 89 remaining) [2024-10-14 19:26:33,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 89 remaining) [2024-10-14 19:26:33,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28ASSERT_VIOLATIONMEMORY_LEAK (13 of 89 remaining) [2024-10-14 19:26:33,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONARRAY_INDEX (12 of 89 remaining) [2024-10-14 19:26:33,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 89 remaining) [2024-10-14 19:26:33,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 89 remaining) [2024-10-14 19:26:33,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 89 remaining) [2024-10-14 19:26:33,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 89 remaining) [2024-10-14 19:26:33,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 89 remaining) [2024-10-14 19:26:33,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 89 remaining) [2024-10-14 19:26:33,449 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 89 remaining) [2024-10-14 19:26:33,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 19:26:33,450 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-14 19:26:33,451 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-14 19:26:33,451 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-14 19:26:33,565 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-14 19:26:33,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 157 transitions, 332 flow [2024-10-14 19:26:33,599 INFO L124 PetriNetUnfolderBase]: 9/171 cut-off events. [2024-10-14 19:26:33,599 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-14 19:26:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 171 events. 9/171 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 804 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2024-10-14 19:26:33,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 155 places, 157 transitions, 332 flow [2024-10-14 19:26:33,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 157 transitions, 332 flow [2024-10-14 19:26:33,606 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 19:26:33,606 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;@6a261a48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 19:26:33,606 INFO L334 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2024-10-14 19:26:33,608 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-14 19:26:33,608 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-14 19:26:33,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-14 19:26:33,608 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:33,608 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-14 19:26:33,609 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-10-14 19:26:33,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:33,609 INFO L85 PathProgramCache]: Analyzing trace with hash 655907, now seen corresponding path program 1 times [2024-10-14 19:26:33,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073602277] [2024-10-14 19:26:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:33,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:33,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073602277] [2024-10-14 19:26:33,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073602277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429896323] [2024-10-14 19:26:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:33,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 19:26:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 19:26:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 19:26:33,628 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 157 [2024-10-14 19:26:33,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 157 transitions, 332 flow. Second operand has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:26:33,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:33,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 157 [2024-10-14 19:26:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-14 19:26:53,819 INFO L124 PetriNetUnfolderBase]: 150765/233063 cut-off events. [2024-10-14 19:26:53,819 INFO L125 PetriNetUnfolderBase]: For 4370/4370 co-relation queries the response was YES. [2024-10-14 19:26:54,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441408 conditions, 233063 events. 150765/233063 cut-off events. For 4370/4370 co-relation queries the response was YES. Maximal size of possible extension queue 6724. Compared 2147742 event pairs, 138281 based on Foata normal form. 6241/123817 useless extension candidates. Maximal degree in co-relation 88809. Up to 205557 conditions per place. [2024-10-14 19:26:55,354 INFO L140 encePairwiseOnDemand]: 144/157 looper letters, 84 selfloop transitions, 0 changer transitions 0/142 dead transitions. [2024-10-14 19:26:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 142 transitions, 470 flow [2024-10-14 19:26:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 19:26:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-14 19:26:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 215 transitions. [2024-10-14 19:26:55,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6847133757961783 [2024-10-14 19:26:55,358 INFO L175 Difference]: Start difference. First operand has 155 places, 157 transitions, 332 flow. Second operand 2 states and 215 transitions. [2024-10-14 19:26:55,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 142 transitions, 470 flow [2024-10-14 19:26:55,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 142 transitions, 468 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-14 19:26:55,367 INFO L231 Difference]: Finished difference. Result has 144 places, 142 transitions, 300 flow [2024-10-14 19:26:55,367 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=300, PETRI_PLACES=144, PETRI_TRANSITIONS=142} [2024-10-14 19:26:55,368 INFO L277 CegarLoopForPetriNet]: 155 programPoint places, -11 predicate places. [2024-10-14 19:26:55,368 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 142 transitions, 300 flow [2024-10-14 19:26:55,368 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 60.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 19:26:55,369 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-14 19:26:55,369 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-14 19:26:55,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 19:26:55,369 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 115 more)] === [2024-10-14 19:26:55,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 19:26:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1929320848, now seen corresponding path program 1 times [2024-10-14 19:26:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 19:26:55,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93964511] [2024-10-14 19:26:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 19:26:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 19:26:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 19:26:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 19:26:55,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 19:26:55,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93964511] [2024-10-14 19:26:55,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93964511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 19:26:55,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 19:26:55,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 19:26:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732088382] [2024-10-14 19:26:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 19:26:55,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 19:26:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 19:26:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 19:26:55,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 19:26:55,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 157 [2024-10-14 19:26:55,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 142 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-10-14 19:26:55,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-14 19:26:55,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 157 [2024-10-14 19:26:55,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand