./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/04_incdec_cas.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-10 00:38:51,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-10 00:38:51,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-10 00:38:51,790 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-10 00:38:51,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-10 00:38:51,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-10 00:38:51,819 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-10 00:38:51,819 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-10 00:38:51,820 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-10 00:38:51,820 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-10 00:38:51,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Use SBE=true [2025-01-10 00:38:51,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-10 00:38:51,820 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-10 00:38:51,821 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:51,821 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:51,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-10 00:38:51,821 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-10 00:38:51,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-10 00:38:51,822 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9295efc0d8bacfc5fb202511f0d3721ae5554ffb4def47cf5dbf45088356869 [2025-01-10 00:38:52,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-10 00:38:52,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-10 00:38:52,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-10 00:38:52,087 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-10 00:38:52,087 INFO L274 PluginConnector]: CDTParser initialized [2025-01-10 00:38:52,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-01-10 00:38:53,292 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85779aede/48b765c302e442c39be146054dc3c31e/FLAG1c1a45e92 [2025-01-10 00:38:53,593 INFO L384 CDTParser]: Found 1 translation units. [2025-01-10 00:38:53,593 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/04_incdec_cas.i [2025-01-10 00:38:53,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85779aede/48b765c302e442c39be146054dc3c31e/FLAG1c1a45e92 [2025-01-10 00:38:53,871 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/85779aede/48b765c302e442c39be146054dc3c31e [2025-01-10 00:38:53,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-10 00:38:53,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-10 00:38:53,874 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:53,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-10 00:38:53,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-10 00:38:53,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:53" (1/1) ... [2025-01-10 00:38:53,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcc66c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:53, skipping insertion in model container [2025-01-10 00:38:53,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:38:53" (1/1) ... [2025-01-10 00:38:53,899 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-10 00:38:54,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:54,150 INFO L200 MainTranslator]: Completed pre-run [2025-01-10 00:38:54,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-10 00:38:54,224 INFO L204 MainTranslator]: Completed translation [2025-01-10 00:38:54,224 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54 WrapperNode [2025-01-10 00:38:54,225 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-10 00:38:54,226 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:54,226 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-10 00:38:54,226 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-10 00:38:54,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,242 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,261 INFO L138 Inliner]: procedures = 174, calls = 46, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 159 [2025-01-10 00:38:54,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-10 00:38:54,262 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-10 00:38:54,262 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-10 00:38:54,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-10 00:38:54,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,270 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,281 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 9, 6, 6]. 39 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 0, 2]. The 8 writes are split as follows [0, 2, 4, 2]. [2025-01-10 00:38:54,282 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,282 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,289 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,291 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,304 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-10 00:38:54,306 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-10 00:38:54,306 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-10 00:38:54,306 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-10 00:38:54,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (1/1) ... [2025-01-10 00:38:54,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-10 00:38:54,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-10 00:38:54,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-10 00:38:54,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-10 00:38:54,348 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-10 00:38:54,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-01-10 00:38:54,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-10 00:38:54,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-10 00:38:54,350 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-10 00:38:54,431 INFO L234 CfgBuilder]: Building ICFG [2025-01-10 00:38:54,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-10 00:38:54,714 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-10 00:38:54,714 INFO L283 CfgBuilder]: Performing block encoding [2025-01-10 00:38:55,021 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-10 00:38:55,023 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2025-01-10 00:38:55,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:55 BoogieIcfgContainer [2025-01-10 00:38:55,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-10 00:38:55,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-10 00:38:55,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-10 00:38:55,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-10 00:38:55,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:38:53" (1/3) ... [2025-01-10 00:38:55,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dc75f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:55, skipping insertion in model container [2025-01-10 00:38:55,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:38:54" (2/3) ... [2025-01-10 00:38:55,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79dc75f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:38:55, skipping insertion in model container [2025-01-10 00:38:55,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:38:55" (3/3) ... [2025-01-10 00:38:55,031 INFO L128 eAbstractionObserver]: Analyzing ICFG 04_incdec_cas.i [2025-01-10 00:38:55,068 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-10 00:38:55,069 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04_incdec_cas.i that has 2 procedures, 65 locations, 1 initial locations, 3 loop locations, and 39 error locations. [2025-01-10 00:38:55,070 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-10 00:38:55,182 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:38:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 73 transitions, 150 flow [2025-01-10 00:38:55,225 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2025-01-10 00:38:55,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:55,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 77 events. 8/77 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 376 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2025-01-10 00:38:55,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 73 transitions, 150 flow [2025-01-10 00:38:55,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 73 transitions, 150 flow [2025-01-10 00:38:55,235 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:38:55,242 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;@212543c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:38:55,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2025-01-10 00:38:55,244 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:38:55,244 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:38:55,244 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:55,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:55,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:38:55,244 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-01-10 00:38:55,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:55,247 INFO L85 PathProgramCache]: Analyzing trace with hash 552554, now seen corresponding path program 1 times [2025-01-10 00:38:55,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:55,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817258622] [2025-01-10 00:38:55,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:55,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:38:55,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:38:55,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:55,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:55,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:55,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:55,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817258622] [2025-01-10 00:38:55,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817258622] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:55,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:55,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:55,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650804707] [2025-01-10 00:38:55,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:55,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:38:55,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:55,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:38:55,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:38:55,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 73 [2025-01-10 00:38:55,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 73 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2025-01-10 00:38:55,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:55,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 73 [2025-01-10 00:38:55,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:55,528 INFO L124 PetriNetUnfolderBase]: 112/278 cut-off events. [2025-01-10 00:38:55,528 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:55,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 278 events. 112/278 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1364 event pairs, 94 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 528. Up to 259 conditions per place. [2025-01-10 00:38:55,531 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 57 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2025-01-10 00:38:55,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 64 transitions, 246 flow [2025-01-10 00:38:55,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:38:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:38:55,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2025-01-10 00:38:55,539 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-01-10 00:38:55,540 INFO L175 Difference]: Start difference. First operand has 68 places, 73 transitions, 150 flow. Second operand 2 states and 80 transitions. [2025-01-10 00:38:55,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 64 transitions, 246 flow [2025-01-10 00:38:55,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 64 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:55,545 INFO L231 Difference]: Finished difference. Result has 62 places, 64 transitions, 132 flow [2025-01-10 00:38:55,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=132, PETRI_PLACES=62, PETRI_TRANSITIONS=64} [2025-01-10 00:38:55,549 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2025-01-10 00:38:55,550 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 64 transitions, 132 flow [2025-01-10 00:38:55,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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) [2025-01-10 00:38:55,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:55,550 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2025-01-10 00:38:55,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-10 00:38:55,550 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 75 more)] === [2025-01-10 00:38:55,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:55,551 INFO L85 PathProgramCache]: Analyzing trace with hash -713132115, now seen corresponding path program 1 times [2025-01-10 00:38:55,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:55,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006841344] [2025-01-10 00:38:55,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:55,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:55,558 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:38:55,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:38:55,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:55,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:55,564 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:38:55,566 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:38:55,572 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:38:55,572 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:55,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:38:55,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:38:55,583 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:38:55,583 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (77 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (68 of 78 remaining) [2025-01-10 00:38:55,585 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (63 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 78 remaining) [2025-01-10 00:38:55,586 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 78 remaining) [2025-01-10 00:38:55,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (38 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 78 remaining) [2025-01-10 00:38:55,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (29 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (24 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 78 remaining) [2025-01-10 00:38:55,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 78 remaining) [2025-01-10 00:38:55,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 78 remaining) [2025-01-10 00:38:55,591 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 78 remaining) [2025-01-10 00:38:55,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-10 00:38:55,591 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-10 00:38:55,593 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:38:55,593 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-10 00:38:55,708 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:38:55,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 139 transitions, 288 flow [2025-01-10 00:38:55,730 INFO L124 PetriNetUnfolderBase]: 16/148 cut-off events. [2025-01-10 00:38:55,730 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-10 00:38:55,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 148 events. 16/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 933 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2025-01-10 00:38:55,732 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 139 transitions, 288 flow [2025-01-10 00:38:55,734 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 139 transitions, 288 flow [2025-01-10 00:38:55,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:38:55,735 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;@212543c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:38:55,735 INFO L334 AbstractCegarLoop]: Starting to check reachability of 116 error locations. [2025-01-10 00:38:55,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:38:55,736 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:38:55,736 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:38:55,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:55,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:38:55,736 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:38:55,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 690581, now seen corresponding path program 1 times [2025-01-10 00:38:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:55,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197502292] [2025-01-10 00:38:55,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:55,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:38:55,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:38:55,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:55,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:55,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197502292] [2025-01-10 00:38:55,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197502292] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:55,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:55,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:55,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433888734] [2025-01-10 00:38:55,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:55,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:38:55,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:55,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:38:55,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:38:55,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2025-01-10 00:38:55,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 139 transitions, 288 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-01-10 00:38:55,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:55,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2025-01-10 00:38:55,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:57,596 INFO L124 PetriNetUnfolderBase]: 13120/20920 cut-off events. [2025-01-10 00:38:57,597 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2025-01-10 00:38:57,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41248 conditions, 20920 events. 13120/20920 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 151643 event pairs, 11374 based on Foata normal form. 0/9844 useless extension candidates. Maximal degree in co-relation 19800. Up to 20179 conditions per place. [2025-01-10 00:38:57,724 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 111 selfloop transitions, 0 changer transitions 0/124 dead transitions. [2025-01-10 00:38:57,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 124 transitions, 480 flow [2025-01-10 00:38:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-10 00:38:57,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-10 00:38:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 152 transitions. [2025-01-10 00:38:57,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2025-01-10 00:38:57,727 INFO L175 Difference]: Start difference. First operand has 128 places, 139 transitions, 288 flow. Second operand 2 states and 152 transitions. [2025-01-10 00:38:57,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 124 transitions, 480 flow [2025-01-10 00:38:57,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:57,731 INFO L231 Difference]: Finished difference. Result has 118 places, 124 transitions, 258 flow [2025-01-10 00:38:57,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=258, PETRI_PLACES=118, PETRI_TRANSITIONS=124} [2025-01-10 00:38:57,732 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -10 predicate places. [2025-01-10 00:38:57,732 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 124 transitions, 258 flow [2025-01-10 00:38:57,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2025-01-10 00:38:57,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:57,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:38:57,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-10 00:38:57,733 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:38:57,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:57,733 INFO L85 PathProgramCache]: Analyzing trace with hash -893990254, now seen corresponding path program 1 times [2025-01-10 00:38:57,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:57,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691781207] [2025-01-10 00:38:57,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:57,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:57,750 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:38:57,767 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:38:57,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:57,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:57,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:57,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691781207] [2025-01-10 00:38:57,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691781207] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:57,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:57,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774010450] [2025-01-10 00:38:57,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:57,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:38:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:57,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:38:57,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:38:57,927 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2025-01-10 00:38:57,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:57,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:57,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2025-01-10 00:38:57,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:38:59,493 INFO L124 PetriNetUnfolderBase]: 11770/18940 cut-off events. [2025-01-10 00:38:59,494 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2025-01-10 00:38:59,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37271 conditions, 18940 events. 11770/18940 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 139178 event pairs, 7200 based on Foata normal form. 0/9874 useless extension candidates. Maximal degree in co-relation 37266. Up to 12245 conditions per place. [2025-01-10 00:38:59,567 INFO L140 encePairwiseOnDemand]: 80/139 looper letters, 237 selfloop transitions, 55 changer transitions 0/305 dead transitions. [2025-01-10 00:38:59,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 305 transitions, 1209 flow [2025-01-10 00:38:59,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:38:59,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:38:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 372 transitions. [2025-01-10 00:38:59,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6690647482014388 [2025-01-10 00:38:59,573 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 258 flow. Second operand 4 states and 372 transitions. [2025-01-10 00:38:59,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 305 transitions, 1209 flow [2025-01-10 00:38:59,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 305 transitions, 1209 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:38:59,582 INFO L231 Difference]: Finished difference. Result has 124 places, 178 transitions, 726 flow [2025-01-10 00:38:59,583 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=726, PETRI_PLACES=124, PETRI_TRANSITIONS=178} [2025-01-10 00:38:59,584 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -4 predicate places. [2025-01-10 00:38:59,584 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 178 transitions, 726 flow [2025-01-10 00:38:59,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:59,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:38:59,585 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-10 00:38:59,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-10 00:38:59,585 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:38:59,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:38:59,585 INFO L85 PathProgramCache]: Analyzing trace with hash -893990253, now seen corresponding path program 1 times [2025-01-10 00:38:59,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:38:59,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470078688] [2025-01-10 00:38:59,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:38:59,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:38:59,595 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-10 00:38:59,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-10 00:38:59,611 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:38:59,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:38:59,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:38:59,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:38:59,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470078688] [2025-01-10 00:38:59,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470078688] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:38:59,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:38:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:38:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208398017] [2025-01-10 00:38:59,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:38:59,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:38:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:38:59,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:38:59,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:38:59,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2025-01-10 00:38:59,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 178 transitions, 726 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:38:59,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:38:59,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2025-01-10 00:38:59,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:01,280 INFO L124 PetriNetUnfolderBase]: 9028/14560 cut-off events. [2025-01-10 00:39:01,280 INFO L125 PetriNetUnfolderBase]: For 2042/2042 co-relation queries the response was YES. [2025-01-10 00:39:01,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35779 conditions, 14560 events. 9028/14560 cut-off events. For 2042/2042 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 103549 event pairs, 5478 based on Foata normal form. 972/10192 useless extension candidates. Maximal degree in co-relation 35771. Up to 8777 conditions per place. [2025-01-10 00:39:01,373 INFO L140 encePairwiseOnDemand]: 118/139 looper letters, 215 selfloop transitions, 9 changer transitions 0/237 dead transitions. [2025-01-10 00:39:01,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 237 transitions, 1373 flow [2025-01-10 00:39:01,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:39:01,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:39:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 258 transitions. [2025-01-10 00:39:01,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46402877697841727 [2025-01-10 00:39:01,375 INFO L175 Difference]: Start difference. First operand has 124 places, 178 transitions, 726 flow. Second operand 4 states and 258 transitions. [2025-01-10 00:39:01,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 237 transitions, 1373 flow [2025-01-10 00:39:01,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 237 transitions, 1373 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:01,391 INFO L231 Difference]: Finished difference. Result has 115 places, 166 transitions, 720 flow [2025-01-10 00:39:01,392 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=720, PETRI_PLACES=115, PETRI_TRANSITIONS=166} [2025-01-10 00:39:01,396 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -13 predicate places. [2025-01-10 00:39:01,396 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 166 transitions, 720 flow [2025-01-10 00:39:01,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:01,396 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:01,396 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:01,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-10 00:39:01,396 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:01,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:01,397 INFO L85 PathProgramCache]: Analyzing trace with hash -131147358, now seen corresponding path program 1 times [2025-01-10 00:39:01,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:01,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396939691] [2025-01-10 00:39:01,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:01,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:01,411 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:01,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:01,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:01,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:01,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:01,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396939691] [2025-01-10 00:39:01,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396939691] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:01,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:01,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-10 00:39:01,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635572923] [2025-01-10 00:39:01,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:01,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:39:01,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:01,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:39:01,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:39:01,523 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 139 [2025-01-10 00:39:01,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 166 transitions, 720 flow. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-01-10 00:39:01,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:01,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 139 [2025-01-10 00:39:01,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:03,357 INFO L124 PetriNetUnfolderBase]: 13844/22109 cut-off events. [2025-01-10 00:39:03,357 INFO L125 PetriNetUnfolderBase]: For 5495/5495 co-relation queries the response was YES. [2025-01-10 00:39:03,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55982 conditions, 22109 events. 13844/22109 cut-off events. For 5495/5495 co-relation queries the response was YES. Maximal size of possible extension queue 1230. Compared 162736 event pairs, 4029 based on Foata normal form. 195/14417 useless extension candidates. Maximal degree in co-relation 55973. Up to 14296 conditions per place. [2025-01-10 00:39:03,431 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 373 selfloop transitions, 35 changer transitions 0/421 dead transitions. [2025-01-10 00:39:03,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 421 transitions, 2696 flow [2025-01-10 00:39:03,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:39:03,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:39:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 333 transitions. [2025-01-10 00:39:03,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.479136690647482 [2025-01-10 00:39:03,436 INFO L175 Difference]: Start difference. First operand has 115 places, 166 transitions, 720 flow. Second operand 5 states and 333 transitions. [2025-01-10 00:39:03,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 421 transitions, 2696 flow [2025-01-10 00:39:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 421 transitions, 2672 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:39:03,462 INFO L231 Difference]: Finished difference. Result has 120 places, 200 transitions, 1064 flow [2025-01-10 00:39:03,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1064, PETRI_PLACES=120, PETRI_TRANSITIONS=200} [2025-01-10 00:39:03,463 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -8 predicate places. [2025-01-10 00:39:03,463 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 200 transitions, 1064 flow [2025-01-10 00:39:03,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2025-01-10 00:39:03,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:03,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:03,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-10 00:39:03,464 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:03,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:03,464 INFO L85 PathProgramCache]: Analyzing trace with hash -131113494, now seen corresponding path program 1 times [2025-01-10 00:39:03,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:03,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911699297] [2025-01-10 00:39:03,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:03,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:03,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:03,480 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:03,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:03,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:03,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911699297] [2025-01-10 00:39:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911699297] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:03,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:03,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690583192] [2025-01-10 00:39:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:03,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:03,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:03,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:03,581 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2025-01-10 00:39:03,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 200 transitions, 1064 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-01-10 00:39:03,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2025-01-10 00:39:03,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:04,948 INFO L124 PetriNetUnfolderBase]: 13147/20963 cut-off events. [2025-01-10 00:39:04,948 INFO L125 PetriNetUnfolderBase]: For 5934/5934 co-relation queries the response was YES. [2025-01-10 00:39:04,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57445 conditions, 20963 events. 13147/20963 cut-off events. For 5934/5934 co-relation queries the response was YES. Maximal size of possible extension queue 1181. Compared 154780 event pairs, 5240 based on Foata normal form. 216/14678 useless extension candidates. Maximal degree in co-relation 57433. Up to 11762 conditions per place. [2025-01-10 00:39:05,059 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 224 selfloop transitions, 7 changer transitions 0/243 dead transitions. [2025-01-10 00:39:05,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 243 transitions, 1701 flow [2025-01-10 00:39:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 183 transitions. [2025-01-10 00:39:05,061 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43884892086330934 [2025-01-10 00:39:05,061 INFO L175 Difference]: Start difference. First operand has 120 places, 200 transitions, 1064 flow. Second operand 3 states and 183 transitions. [2025-01-10 00:39:05,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 243 transitions, 1701 flow [2025-01-10 00:39:05,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 243 transitions, 1701 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-01-10 00:39:05,088 INFO L231 Difference]: Finished difference. Result has 119 places, 193 transitions, 1036 flow [2025-01-10 00:39:05,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1036, PETRI_PLACES=119, PETRI_TRANSITIONS=193} [2025-01-10 00:39:05,092 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -9 predicate places. [2025-01-10 00:39:05,092 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 193 transitions, 1036 flow [2025-01-10 00:39:05,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2025-01-10 00:39:05,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:05,093 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:05,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-10 00:39:05,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:05,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -131113493, now seen corresponding path program 1 times [2025-01-10 00:39:05,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:05,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556501247] [2025-01-10 00:39:05,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:05,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:05,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:05,106 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:05,106 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:05,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:05,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:05,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556501247] [2025-01-10 00:39:05,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556501247] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:05,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:05,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:05,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759744090] [2025-01-10 00:39:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:05,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:39:05,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:05,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:39:05,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:39:05,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2025-01-10 00:39:05,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 193 transitions, 1036 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:05,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:05,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2025-01-10 00:39:05,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:07,375 INFO L124 PetriNetUnfolderBase]: 13478/21438 cut-off events. [2025-01-10 00:39:07,375 INFO L125 PetriNetUnfolderBase]: For 7185/7185 co-relation queries the response was YES. [2025-01-10 00:39:07,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59572 conditions, 21438 events. 13478/21438 cut-off events. For 7185/7185 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 158000 event pairs, 4166 based on Foata normal form. 0/15618 useless extension candidates. Maximal degree in co-relation 59559. Up to 7489 conditions per place. [2025-01-10 00:39:07,543 INFO L140 encePairwiseOnDemand]: 125/139 looper letters, 325 selfloop transitions, 22 changer transitions 0/358 dead transitions. [2025-01-10 00:39:07,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 358 transitions, 2546 flow [2025-01-10 00:39:07,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-10 00:39:07,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-01-10 00:39:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2025-01-10 00:39:07,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4982014388489209 [2025-01-10 00:39:07,545 INFO L175 Difference]: Start difference. First operand has 119 places, 193 transitions, 1036 flow. Second operand 4 states and 277 transitions. [2025-01-10 00:39:07,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 358 transitions, 2546 flow [2025-01-10 00:39:07,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 358 transitions, 2530 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-01-10 00:39:07,585 INFO L231 Difference]: Finished difference. Result has 122 places, 206 transitions, 1193 flow [2025-01-10 00:39:07,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1193, PETRI_PLACES=122, PETRI_TRANSITIONS=206} [2025-01-10 00:39:07,586 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, -6 predicate places. [2025-01-10 00:39:07,586 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 206 transitions, 1193 flow [2025-01-10 00:39:07,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:07,587 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:07,587 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:07,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-10 00:39:07,587 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:07,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -131113492, now seen corresponding path program 1 times [2025-01-10 00:39:07,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:07,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082064840] [2025-01-10 00:39:07,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:07,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:07,593 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:07,599 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:07,599 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:07,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082064840] [2025-01-10 00:39:07,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082064840] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:07,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028376528] [2025-01-10 00:39:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:07,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-10 00:39:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:07,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-10 00:39:07,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-10 00:39:07,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 139 [2025-01-10 00:39:07,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 206 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:07,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:07,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 139 [2025-01-10 00:39:07,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:09,279 INFO L124 PetriNetUnfolderBase]: 13348/21278 cut-off events. [2025-01-10 00:39:09,280 INFO L125 PetriNetUnfolderBase]: For 10185/10185 co-relation queries the response was YES. [2025-01-10 00:39:09,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61208 conditions, 21278 events. 13348/21278 cut-off events. For 10185/10185 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 156835 event pairs, 4020 based on Foata normal form. 12/16172 useless extension candidates. Maximal degree in co-relation 61193. Up to 6671 conditions per place. [2025-01-10 00:39:09,395 INFO L140 encePairwiseOnDemand]: 122/139 looper letters, 336 selfloop transitions, 36 changer transitions 0/383 dead transitions. [2025-01-10 00:39:09,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 383 transitions, 2771 flow [2025-01-10 00:39:09,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-10 00:39:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-01-10 00:39:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2025-01-10 00:39:09,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45179856115107914 [2025-01-10 00:39:09,397 INFO L175 Difference]: Start difference. First operand has 122 places, 206 transitions, 1193 flow. Second operand 5 states and 314 transitions. [2025-01-10 00:39:09,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 383 transitions, 2771 flow [2025-01-10 00:39:09,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 383 transitions, 2752 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:39:09,444 INFO L231 Difference]: Finished difference. Result has 128 places, 213 transitions, 1373 flow [2025-01-10 00:39:09,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1373, PETRI_PLACES=128, PETRI_TRANSITIONS=213} [2025-01-10 00:39:09,447 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 0 predicate places. [2025-01-10 00:39:09,447 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 213 transitions, 1373 flow [2025-01-10 00:39:09,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:09,447 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:09,447 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:09,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-10 00:39:09,448 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:09,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:09,448 INFO L85 PathProgramCache]: Analyzing trace with hash -131113495, now seen corresponding path program 1 times [2025-01-10 00:39:09,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:09,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388138717] [2025-01-10 00:39:09,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:09,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:09,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-01-10 00:39:09,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-01-10 00:39:09,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:09,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:09,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:09,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:09,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388138717] [2025-01-10 00:39:09,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388138717] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:09,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:09,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:09,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152296897] [2025-01-10 00:39:09,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:09,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-10 00:39:09,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:09,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-10 00:39:09,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-10 00:39:09,511 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 139 [2025-01-10 00:39:09,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 213 transitions, 1373 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2025-01-10 00:39:09,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:09,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 139 [2025-01-10 00:39:09,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-10 00:39:10,916 INFO L124 PetriNetUnfolderBase]: 13240/20942 cut-off events. [2025-01-10 00:39:10,917 INFO L125 PetriNetUnfolderBase]: For 18330/18330 co-relation queries the response was YES. [2025-01-10 00:39:10,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62898 conditions, 20942 events. 13240/20942 cut-off events. For 18330/18330 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 152326 event pairs, 5576 based on Foata normal form. 0/16328 useless extension candidates. Maximal degree in co-relation 62880. Up to 13457 conditions per place. [2025-01-10 00:39:11,000 INFO L140 encePairwiseOnDemand]: 126/139 looper letters, 238 selfloop transitions, 22 changer transitions 0/270 dead transitions. [2025-01-10 00:39:11,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 270 transitions, 2140 flow [2025-01-10 00:39:11,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-10 00:39:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-01-10 00:39:11,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 194 transitions. [2025-01-10 00:39:11,001 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46522781774580335 [2025-01-10 00:39:11,001 INFO L175 Difference]: Start difference. First operand has 128 places, 213 transitions, 1373 flow. Second operand 3 states and 194 transitions. [2025-01-10 00:39:11,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 270 transitions, 2140 flow [2025-01-10 00:39:11,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 270 transitions, 2120 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-01-10 00:39:11,056 INFO L231 Difference]: Finished difference. Result has 131 places, 217 transitions, 1487 flow [2025-01-10 00:39:11,056 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1487, PETRI_PLACES=131, PETRI_TRANSITIONS=217} [2025-01-10 00:39:11,057 INFO L279 CegarLoopForPetriNet]: 128 programPoint places, 3 predicate places. [2025-01-10 00:39:11,057 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 217 transitions, 1487 flow [2025-01-10 00:39:11,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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) [2025-01-10 00:39:11,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:11,057 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2025-01-10 00:39:11,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-10 00:39:11,057 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 113 more)] === [2025-01-10 00:39:11,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1924371331, now seen corresponding path program 1 times [2025-01-10 00:39:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:11,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349524825] [2025-01-10 00:39:11,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:11,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:11,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:39:11,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:39:11,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:11,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:11,064 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-10 00:39:11,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-10 00:39:11,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-10 00:39:11,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:11,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-10 00:39:11,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-10 00:39:11,070 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-10 00:39:11,070 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (115 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (114 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (113 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (112 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (111 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (110 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (109 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (108 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (107 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (106 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (105 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (104 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (103 of 116 remaining) [2025-01-10 00:39:11,071 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (102 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (101 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (100 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (99 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (98 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (97 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (96 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (95 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (94 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (93 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (92 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (91 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (90 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (89 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (88 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (87 of 116 remaining) [2025-01-10 00:39:11,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (86 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (85 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (84 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (83 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (82 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (81 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (80 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (76 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (74 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (73 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (72 of 116 remaining) [2025-01-10 00:39:11,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (67 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (62 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 116 remaining) [2025-01-10 00:39:11,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 116 remaining) [2025-01-10 00:39:11,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err37ASSERT_VIOLATIONMEMORY_LEAK (29 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err18ASSERT_VIOLATIONMEMORY_LEAK (24 of 116 remaining) [2025-01-10 00:39:11,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 116 remaining) [2025-01-10 00:39:11,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 116 remaining) [2025-01-10 00:39:11,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-10 00:39:11,077 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-10 00:39:11,078 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-10 00:39:11,078 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-10 00:39:11,174 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-10 00:39:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 205 transitions, 428 flow [2025-01-10 00:39:11,193 INFO L124 PetriNetUnfolderBase]: 24/219 cut-off events. [2025-01-10 00:39:11,193 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-10 00:39:11,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 219 events. 24/219 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1331 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 200. Up to 4 conditions per place. [2025-01-10 00:39:11,195 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 205 transitions, 428 flow [2025-01-10 00:39:11,198 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 205 transitions, 428 flow [2025-01-10 00:39:11,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-10 00:39:11,199 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;@212543c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-10 00:39:11,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 154 error locations. [2025-01-10 00:39:11,200 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-10 00:39:11,200 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2025-01-10 00:39:11,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-10 00:39:11,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-10 00:39:11,200 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2025-01-10 00:39:11,200 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err20REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 151 more)] === [2025-01-10 00:39:11,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-10 00:39:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 894146, now seen corresponding path program 1 times [2025-01-10 00:39:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-10 00:39:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477946449] [2025-01-10 00:39:11,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-10 00:39:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-10 00:39:11,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-01-10 00:39:11,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-01-10 00:39:11,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-10 00:39:11,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-10 00:39:11,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-10 00:39:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-10 00:39:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477946449] [2025-01-10 00:39:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477946449] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-10 00:39:11,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-10 00:39:11,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-10 00:39:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208429135] [2025-01-10 00:39:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-10 00:39:11,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-10 00:39:11,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-10 00:39:11,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-10 00:39:11,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-10 00:39:11,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 205 [2025-01-10 00:39:11,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 205 transitions, 428 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-10 00:39:11,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-10 00:39:11,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 205 [2025-01-10 00:39:11,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand