./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-ext/02_inc_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-ext/02_inc_cas.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 09:21:18,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 09:21:18,739 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 09:21:18,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 09:21:18,743 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 09:21:18,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 09:21:18,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 09:21:18,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 09:21:18,764 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 09:21:18,764 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 09:21:18,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 09:21:18,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 09:21:18,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 09:21:18,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 09:21:18,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 09:21:18,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 09:21:18,766 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 09:21:18,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 09:21:18,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 09:21:18,767 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 09:21:18,767 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 09:21:18,770 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 09:21:18,770 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 09:21:18,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 09:21:18,771 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 09:21:18,771 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 09:21:18,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 09:21:18,771 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 09:21:18,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 09:21:18,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 09:21:18,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 09:21:18,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 09:21:18,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 09:21:18,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:21:18,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 09:21:18,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 09:21:18,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 09:21:18,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 09:21:18,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 09:21:18,778 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 09:21:18,778 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 09:21:18,779 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 09:21:18,779 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ede09850ec25b369afc0cd16258beff942f9fc7c5304532be31fd5925a934e14 [2024-11-19 09:21:18,974 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 09:21:18,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 09:21:18,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 09:21:19,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 09:21:19,000 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 09:21:19,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-19 09:21:20,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 09:21:20,430 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 09:21:20,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/02_inc_cas.i [2024-11-19 09:21:20,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883f08ff/29b1d1bf07ff4c8c8f9f3f2781be5eb6/FLAG3ebeb300c [2024-11-19 09:21:20,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d883f08ff/29b1d1bf07ff4c8c8f9f3f2781be5eb6 [2024-11-19 09:21:20,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 09:21:20,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 09:21:20,470 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 09:21:20,470 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 09:21:20,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 09:21:20,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423d8f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20, skipping insertion in model container [2024-11-19 09:21:20,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,555 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 09:21:20,845 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:21:20,852 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 09:21:20,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 09:21:20,924 INFO L204 MainTranslator]: Completed translation [2024-11-19 09:21:20,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20 WrapperNode [2024-11-19 09:21:20,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 09:21:20,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 09:21:20,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 09:21:20,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 09:21:20,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,961 INFO L138 Inliner]: procedures = 170, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2024-11-19 09:21:20,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 09:21:20,964 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 09:21:20,964 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 09:21:20,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 09:21:20,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:20,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,000 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 3 writes are split as follows [0, 2, 1]. [2024-11-19 09:21:21,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,001 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,022 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 09:21:21,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 09:21:21,023 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 09:21:21,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 09:21:21,024 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (1/1) ... [2024-11-19 09:21:21,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 09:21:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 09:21:21,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 09:21:21,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 09:21:21,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-19 09:21:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 09:21:21,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 09:21:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 09:21:21,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 09:21:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 09:21:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 09:21:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 09:21:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 09:21:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 09:21:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 09:21:21,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 09:21:21,111 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 09:21:21,230 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 09:21:21,232 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 09:21:21,381 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 09:21:21,381 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 09:21:21,555 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 09:21:21,555 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 09:21:21,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:21:21 BoogieIcfgContainer [2024-11-19 09:21:21,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 09:21:21,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 09:21:21,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 09:21:21,560 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 09:21:21,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 09:21:20" (1/3) ... [2024-11-19 09:21:21,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13584560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:21:21, skipping insertion in model container [2024-11-19 09:21:21,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 09:21:20" (2/3) ... [2024-11-19 09:21:21,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13584560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 09:21:21, skipping insertion in model container [2024-11-19 09:21:21,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 09:21:21" (3/3) ... [2024-11-19 09:21:21,562 INFO L112 eAbstractionObserver]: Analyzing ICFG 02_inc_cas.i [2024-11-19 09:21:21,574 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 09:21:21,575 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2024-11-19 09:21:21,575 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 09:21:21,628 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:21:21,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 35 transitions, 74 flow [2024-11-19 09:21:21,694 INFO L124 PetriNetUnfolderBase]: 3/39 cut-off events. [2024-11-19 09:21:21,695 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:21,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 39 events. 3/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 134 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-11-19 09:21:21,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 35 transitions, 74 flow [2024-11-19 09:21:21,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 35 transitions, 74 flow [2024-11-19 09:21:21,711 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:21:21,718 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;@2fc6d5a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:21:21,718 INFO L334 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2024-11-19 09:21:21,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:21:21,722 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:21:21,723 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:21,723 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:21,723 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:21:21,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-19 09:21:21,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:21,728 INFO L85 PathProgramCache]: Analyzing trace with hash 282694, now seen corresponding path program 1 times [2024-11-19 09:21:21,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:21,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318198839] [2024-11-19 09:21:21,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:21,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:21,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:21,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:21,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318198839] [2024-11-19 09:21:21,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318198839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:21,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:21,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:21,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147844225] [2024-11-19 09:21:21,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:21,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:21:21,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:21,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:21:21,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:21:21,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-19 09:21:21,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:21,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:21,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-19 09:21:21,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:21,988 INFO L124 PetriNetUnfolderBase]: 42/114 cut-off events. [2024-11-19 09:21:21,988 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:21,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 114 events. 42/114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 404 event pairs, 36 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 208. Up to 102 conditions per place. [2024-11-19 09:21:21,992 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 24 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-11-19 09:21:21,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 29 transitions, 110 flow [2024-11-19 09:21:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:21:21,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:21:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 40 transitions. [2024-11-19 09:21:22,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-19 09:21:22,002 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 74 flow. Second operand 2 states and 40 transitions. [2024-11-19 09:21:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 29 transitions, 110 flow [2024-11-19 09:21:22,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:22,006 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 62 flow [2024-11-19 09:21:22,008 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-19 09:21:22,012 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2024-11-19 09:21:22,012 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 62 flow [2024-11-19 09:21:22,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,013 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:22,013 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:21:22,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 09:21:22,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-19 09:21:22,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:22,013 INFO L85 PathProgramCache]: Analyzing trace with hash 271677128, now seen corresponding path program 1 times [2024-11-19 09:21:22,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:22,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972929989] [2024-11-19 09:21:22,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:22,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:22,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972929989] [2024-11-19 09:21:22,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972929989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:22,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:22,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005588491] [2024-11-19 09:21:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:22,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:21:22,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:21:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:21:22,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-19 09:21:22,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:22,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-19 09:21:22,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:22,220 INFO L124 PetriNetUnfolderBase]: 36/99 cut-off events. [2024-11-19 09:21:22,221 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:22,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 99 events. 36/99 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 343 event pairs, 28 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 187. Up to 78 conditions per place. [2024-11-19 09:21:22,222 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 20 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-11-19 09:21:22,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 28 transitions, 106 flow [2024-11-19 09:21:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2024-11-19 09:21:22,224 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-11-19 09:21:22,224 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 62 flow. Second operand 3 states and 44 transitions. [2024-11-19 09:21:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 28 transitions, 106 flow [2024-11-19 09:21:22,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 28 transitions, 106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:22,225 INFO L231 Difference]: Finished difference. Result has 30 places, 26 transitions, 62 flow [2024-11-19 09:21:22,225 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=26} [2024-11-19 09:21:22,227 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-11-19 09:21:22,227 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 26 transitions, 62 flow [2024-11-19 09:21:22,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,227 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:22,227 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:21:22,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 09:21:22,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-19 09:21:22,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 271677129, now seen corresponding path program 1 times [2024-11-19 09:21:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839920340] [2024-11-19 09:21:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:22,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:22,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:22,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839920340] [2024-11-19 09:21:22,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839920340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:22,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:22,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:22,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700179110] [2024-11-19 09:21:22,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:22,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:21:22,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:22,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:21:22,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:21:22,361 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 35 [2024-11-19 09:21:22,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:22,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 35 [2024-11-19 09:21:22,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:22,434 INFO L124 PetriNetUnfolderBase]: 30/84 cut-off events. [2024-11-19 09:21:22,434 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:22,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 84 events. 30/84 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 271 event pairs, 22 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 164. Up to 63 conditions per place. [2024-11-19 09:21:22,435 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 17 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2024-11-19 09:21:22,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 100 flow [2024-11-19 09:21:22,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:21:22,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:21:22,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-11-19 09:21:22,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3357142857142857 [2024-11-19 09:21:22,437 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 4 states and 47 transitions. [2024-11-19 09:21:22,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 100 flow [2024-11-19 09:21:22,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:22,438 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 56 flow [2024-11-19 09:21:22,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=56, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2024-11-19 09:21:22,439 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -7 predicate places. [2024-11-19 09:21:22,439 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 56 flow [2024-11-19 09:21:22,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:22,439 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-19 09:21:22,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 09:21:22,439 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2024-11-19 09:21:22,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:22,440 INFO L85 PathProgramCache]: Analyzing trace with hash -167972605, now seen corresponding path program 1 times [2024-11-19 09:21:22,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:22,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103111312] [2024-11-19 09:21:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:22,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:21:22,455 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:21:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:21:22,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:21:22,478 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:21:22,479 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (31 of 32 remaining) [2024-11-19 09:21:22,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 32 remaining) [2024-11-19 09:21:22,481 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (26 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 32 remaining) [2024-11-19 09:21:22,482 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 32 remaining) [2024-11-19 09:21:22,483 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 32 remaining) [2024-11-19 09:21:22,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 32 remaining) [2024-11-19 09:21:22,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (15 of 32 remaining) [2024-11-19 09:21:22,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 32 remaining) [2024-11-19 09:21:22,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 32 remaining) [2024-11-19 09:21:22,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 32 remaining) [2024-11-19 09:21:22,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 32 remaining) [2024-11-19 09:21:22,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (10 of 32 remaining) [2024-11-19 09:21:22,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 32 remaining) [2024-11-19 09:21:22,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 32 remaining) [2024-11-19 09:21:22,486 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 32 remaining) [2024-11-19 09:21:22,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 32 remaining) [2024-11-19 09:21:22,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 09:21:22,489 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-19 09:21:22,491 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:21:22,491 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-19 09:21:22,536 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:21:22,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 63 transitions, 136 flow [2024-11-19 09:21:22,550 INFO L124 PetriNetUnfolderBase]: 6/72 cut-off events. [2024-11-19 09:21:22,550 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 09:21:22,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 72 events. 6/72 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 316 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 59. Up to 3 conditions per place. [2024-11-19 09:21:22,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 63 transitions, 136 flow [2024-11-19 09:21:22,552 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 63 transitions, 136 flow [2024-11-19 09:21:22,553 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:21:22,554 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;@2fc6d5a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:21:22,556 INFO L334 AbstractCegarLoop]: Starting to check reachability of 47 error locations. [2024-11-19 09:21:22,557 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:21:22,557 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:21:22,557 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:22,557 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:22,557 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:21:22,557 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-19 09:21:22,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash 345253, now seen corresponding path program 1 times [2024-11-19 09:21:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:22,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231886285] [2024-11-19 09:21:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:22,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:22,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:22,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:22,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231886285] [2024-11-19 09:21:22,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231886285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:22,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:22,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:22,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945461774] [2024-11-19 09:21:22,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:22,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:21:22,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:22,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:21:22,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:21:22,570 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-19 09:21:22,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 136 flow. Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:22,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-19 09:21:22,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:22,934 INFO L124 PetriNetUnfolderBase]: 1980/3340 cut-off events. [2024-11-19 09:21:22,935 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-19 09:21:22,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6525 conditions, 3340 events. 1980/3340 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 19414 event pairs, 1746 based on Foata normal form. 0/1690 useless extension candidates. Maximal degree in co-relation 4917. Up to 3123 conditions per place. [2024-11-19 09:21:22,955 INFO L140 encePairwiseOnDemand]: 56/63 looper letters, 45 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2024-11-19 09:21:22,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 208 flow [2024-11-19 09:21:22,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:21:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:21:22,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2024-11-19 09:21:22,957 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-19 09:21:22,957 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 136 flow. Second operand 2 states and 72 transitions. [2024-11-19 09:21:22,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 208 flow [2024-11-19 09:21:22,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:22,961 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 118 flow [2024-11-19 09:21:22,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2024-11-19 09:21:22,962 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2024-11-19 09:21:22,962 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 118 flow [2024-11-19 09:21:22,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:22,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:22,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:21:22,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 09:21:22,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-19 09:21:22,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:22,963 INFO L85 PathProgramCache]: Analyzing trace with hash 331825155, now seen corresponding path program 1 times [2024-11-19 09:21:22,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:22,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025625528] [2024-11-19 09:21:22,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:22,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:23,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:23,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:23,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025625528] [2024-11-19 09:21:23,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025625528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:23,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:23,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:23,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067105786] [2024-11-19 09:21:23,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:23,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:21:23,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:23,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:21:23,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:21:23,063 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 63 [2024-11-19 09:21:23,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:23,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 63 [2024-11-19 09:21:23,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:23,307 INFO L124 PetriNetUnfolderBase]: 978/1742 cut-off events. [2024-11-19 09:21:23,307 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 09:21:23,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3332 conditions, 1742 events. 978/1742 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9580 event pairs, 682 based on Foata normal form. 0/1070 useless extension candidates. Maximal degree in co-relation 3327. Up to 1227 conditions per place. [2024-11-19 09:21:23,315 INFO L140 encePairwiseOnDemand]: 46/63 looper letters, 65 selfloop transitions, 5 changer transitions 0/79 dead transitions. [2024-11-19 09:21:23,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 313 flow [2024-11-19 09:21:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:21:23,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:21:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-19 09:21:23,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-11-19 09:21:23,317 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 118 flow. Second operand 4 states and 128 transitions. [2024-11-19 09:21:23,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 313 flow [2024-11-19 09:21:23,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 313 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:23,318 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 149 flow [2024-11-19 09:21:23,319 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-11-19 09:21:23,319 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2024-11-19 09:21:23,320 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 149 flow [2024-11-19 09:21:23,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,321 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:23,321 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:23,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 09:21:23,322 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-19 09:21:23,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1056406379, now seen corresponding path program 1 times [2024-11-19 09:21:23,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:23,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321283773] [2024-11-19 09:21:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:23,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321283773] [2024-11-19 09:21:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321283773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781790253] [2024-11-19 09:21:23,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:23,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:23,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 63 [2024-11-19 09:21:23,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:23,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 63 [2024-11-19 09:21:23,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:23,600 INFO L124 PetriNetUnfolderBase]: 945/1618 cut-off events. [2024-11-19 09:21:23,601 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2024-11-19 09:21:23,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3514 conditions, 1618 events. 945/1618 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8629 event pairs, 124 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 3507. Up to 1133 conditions per place. [2024-11-19 09:21:23,608 INFO L140 encePairwiseOnDemand]: 53/63 looper letters, 68 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2024-11-19 09:21:23,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 84 transitions, 388 flow [2024-11-19 09:21:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:23,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-19 09:21:23,611 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5291005291005291 [2024-11-19 09:21:23,612 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 149 flow. Second operand 3 states and 100 transitions. [2024-11-19 09:21:23,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 84 transitions, 388 flow [2024-11-19 09:21:23,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 84 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 09:21:23,616 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 224 flow [2024-11-19 09:21:23,616 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2024-11-19 09:21:23,617 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2024-11-19 09:21:23,618 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 224 flow [2024-11-19 09:21:23,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,619 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:23,619 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:23,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 09:21:23,619 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-19 09:21:23,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:23,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1056406380, now seen corresponding path program 1 times [2024-11-19 09:21:23,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:23,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228361326] [2024-11-19 09:21:23,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:23,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228361326] [2024-11-19 09:21:23,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228361326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:23,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:23,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:23,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728728122] [2024-11-19 09:21:23,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:23,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:23,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:23,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 63 [2024-11-19 09:21:23,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:23,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 63 [2024-11-19 09:21:23,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:23,857 INFO L124 PetriNetUnfolderBase]: 732/1259 cut-off events. [2024-11-19 09:21:23,857 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2024-11-19 09:21:23,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3237 conditions, 1259 events. 732/1259 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6290 event pairs, 107 based on Foata normal form. 90/1082 useless extension candidates. Maximal degree in co-relation 3229. Up to 916 conditions per place. [2024-11-19 09:21:23,863 INFO L140 encePairwiseOnDemand]: 57/63 looper letters, 54 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2024-11-19 09:21:23,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 70 transitions, 375 flow [2024-11-19 09:21:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-19 09:21:23,864 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-19 09:21:23,864 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 224 flow. Second operand 3 states and 84 transitions. [2024-11-19 09:21:23,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 70 transitions, 375 flow [2024-11-19 09:21:23,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 70 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:23,869 INFO L231 Difference]: Finished difference. Result has 54 places, 55 transitions, 214 flow [2024-11-19 09:21:23,870 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=54, PETRI_TRANSITIONS=55} [2024-11-19 09:21:23,870 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2024-11-19 09:21:23,870 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 55 transitions, 214 flow [2024-11-19 09:21:23,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:23,871 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:23,871 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-19 09:21:23,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 09:21:23,871 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 44 more)] === [2024-11-19 09:21:23,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash -76789090, now seen corresponding path program 1 times [2024-11-19 09:21:23,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:23,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027186214] [2024-11-19 09:21:23,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:23,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:21:23,881 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-19 09:21:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-19 09:21:23,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-19 09:21:23,892 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (46 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (41 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 47 remaining) [2024-11-19 09:21:23,892 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 47 remaining) [2024-11-19 09:21:23,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 47 remaining) [2024-11-19 09:21:23,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (30 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (25 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 47 remaining) [2024-11-19 09:21:23,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONMEMORY_LEAK (10 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 47 remaining) [2024-11-19 09:21:23,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 47 remaining) [2024-11-19 09:21:23,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 47 remaining) [2024-11-19 09:21:23,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 09:21:23,900 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-19 09:21:23,901 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-19 09:21:23,901 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-19 09:21:23,950 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-19 09:21:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 200 flow [2024-11-19 09:21:23,959 INFO L124 PetriNetUnfolderBase]: 9/105 cut-off events. [2024-11-19 09:21:23,960 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-19 09:21:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 105 events. 9/105 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 484 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 86. Up to 4 conditions per place. [2024-11-19 09:21:23,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 200 flow [2024-11-19 09:21:23,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 91 transitions, 200 flow [2024-11-19 09:21:23,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 09:21:23,962 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;@2fc6d5a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 09:21:23,963 INFO L334 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2024-11-19 09:21:23,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 09:21:23,963 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-19 09:21:23,963 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 09:21:23,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:23,964 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-19 09:21:23,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:23,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash 435616, now seen corresponding path program 1 times [2024-11-19 09:21:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:23,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553358434] [2024-11-19 09:21:23,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:23,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:23,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:23,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553358434] [2024-11-19 09:21:23,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553358434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:23,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:23,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260891265] [2024-11-19 09:21:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:23,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 09:21:23,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:23,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 09:21:23,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 09:21:23,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 91 [2024-11-19 09:21:23,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 200 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) [2024-11-19 09:21:23,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:23,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 91 [2024-11-19 09:21:23,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:29,908 INFO L124 PetriNetUnfolderBase]: 60462/86204 cut-off events. [2024-11-19 09:21:29,908 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2024-11-19 09:21:30,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169893 conditions, 86204 events. 60462/86204 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 3228. Compared 598676 event pairs, 53730 based on Foata normal form. 0/40040 useless extension candidates. Maximal degree in co-relation 33051. Up to 82182 conditions per place. [2024-11-19 09:21:30,352 INFO L140 encePairwiseOnDemand]: 81/91 looper letters, 66 selfloop transitions, 0 changer transitions 0/79 dead transitions. [2024-11-19 09:21:30,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 79 transitions, 308 flow [2024-11-19 09:21:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 09:21:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 09:21:30,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 104 transitions. [2024-11-19 09:21:30,354 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-19 09:21:30,354 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 200 flow. Second operand 2 states and 104 transitions. [2024-11-19 09:21:30,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 79 transitions, 308 flow [2024-11-19 09:21:30,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 79 transitions, 306 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:30,359 INFO L231 Difference]: Finished difference. Result has 81 places, 79 transitions, 174 flow [2024-11-19 09:21:30,360 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=174, PETRI_PLACES=81, PETRI_TRANSITIONS=79} [2024-11-19 09:21:30,361 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -8 predicate places. [2024-11-19 09:21:30,361 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 79 transitions, 174 flow [2024-11-19 09:21:30,362 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) [2024-11-19 09:21:30,362 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:30,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:21:30,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 09:21:30,362 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:30,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:30,363 INFO L85 PathProgramCache]: Analyzing trace with hash 418692856, now seen corresponding path program 1 times [2024-11-19 09:21:30,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:30,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844721465] [2024-11-19 09:21:30,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:30,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844721465] [2024-11-19 09:21:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844721465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:30,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:30,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:30,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029667332] [2024-11-19 09:21:30,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:30,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:21:30,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:30,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:21:30,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:21:30,425 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 91 [2024-11-19 09:21:30,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 79 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:30,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:30,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 91 [2024-11-19 09:21:30,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:34,746 INFO L124 PetriNetUnfolderBase]: 43095/65066 cut-off events. [2024-11-19 09:21:34,746 INFO L125 PetriNetUnfolderBase]: For 1050/1050 co-relation queries the response was YES. [2024-11-19 09:21:34,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126111 conditions, 65066 events. 43095/65066 cut-off events. For 1050/1050 co-relation queries the response was YES. Maximal size of possible extension queue 3047. Compared 496612 event pairs, 26389 based on Foata normal form. 0/34094 useless extension candidates. Maximal degree in co-relation 126105. Up to 39243 conditions per place. [2024-11-19 09:21:35,048 INFO L140 encePairwiseOnDemand]: 51/91 looper letters, 138 selfloop transitions, 37 changer transitions 0/188 dead transitions. [2024-11-19 09:21:35,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 188 transitions, 757 flow [2024-11-19 09:21:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:21:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:21:35,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2024-11-19 09:21:35,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840659340659341 [2024-11-19 09:21:35,050 INFO L175 Difference]: Start difference. First operand has 81 places, 79 transitions, 174 flow. Second operand 4 states and 249 transitions. [2024-11-19 09:21:35,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 188 transitions, 757 flow [2024-11-19 09:21:35,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 188 transitions, 757 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:35,055 INFO L231 Difference]: Finished difference. Result has 87 places, 115 transitions, 490 flow [2024-11-19 09:21:35,056 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=87, PETRI_TRANSITIONS=115} [2024-11-19 09:21:35,056 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -2 predicate places. [2024-11-19 09:21:35,056 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 115 transitions, 490 flow [2024-11-19 09:21:35,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:35,058 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:35,058 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-19 09:21:35,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 09:21:35,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:35,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:35,059 INFO L85 PathProgramCache]: Analyzing trace with hash 418692857, now seen corresponding path program 1 times [2024-11-19 09:21:35,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:35,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214828125] [2024-11-19 09:21:35,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:35,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:35,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:35,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214828125] [2024-11-19 09:21:35,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214828125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:35,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:35,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:35,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670605754] [2024-11-19 09:21:35,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:35,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 09:21:35,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:35,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 09:21:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-19 09:21:35,142 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 91 [2024-11-19 09:21:35,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 115 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:35,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:35,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 91 [2024-11-19 09:21:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:38,358 INFO L124 PetriNetUnfolderBase]: 24834/38246 cut-off events. [2024-11-19 09:21:38,358 INFO L125 PetriNetUnfolderBase]: For 5227/5227 co-relation queries the response was YES. [2024-11-19 09:21:38,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100394 conditions, 38246 events. 24834/38246 cut-off events. For 5227/5227 co-relation queries the response was YES. Maximal size of possible extension queue 1960. Compared 283202 event pairs, 13465 based on Foata normal form. 5823/31013 useless extension candidates. Maximal degree in co-relation 100385. Up to 20379 conditions per place. [2024-11-19 09:21:38,539 INFO L140 encePairwiseOnDemand]: 75/91 looper letters, 126 selfloop transitions, 7 changer transitions 0/146 dead transitions. [2024-11-19 09:21:38,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 146 transitions, 876 flow [2024-11-19 09:21:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 09:21:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 09:21:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-11-19 09:21:38,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48626373626373626 [2024-11-19 09:21:38,540 INFO L175 Difference]: Start difference. First operand has 87 places, 115 transitions, 490 flow. Second operand 4 states and 177 transitions. [2024-11-19 09:21:38,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 146 transitions, 876 flow [2024-11-19 09:21:38,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 146 transitions, 876 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 09:21:38,565 INFO L231 Difference]: Finished difference. Result has 81 places, 106 transitions, 486 flow [2024-11-19 09:21:38,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=486, PETRI_PLACES=81, PETRI_TRANSITIONS=106} [2024-11-19 09:21:38,566 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -8 predicate places. [2024-11-19 09:21:38,566 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 106 transitions, 486 flow [2024-11-19 09:21:38,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:38,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:38,566 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:38,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 09:21:38,567 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:38,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:38,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1363075007, now seen corresponding path program 1 times [2024-11-19 09:21:38,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:38,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366393503] [2024-11-19 09:21:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:38,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:38,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:38,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:38,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366393503] [2024-11-19 09:21:38,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366393503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:38,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:38,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:38,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853372456] [2024-11-19 09:21:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:38,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:38,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:38,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:38,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:38,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 91 [2024-11-19 09:21:38,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 106 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:38,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:38,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 91 [2024-11-19 09:21:38,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:41,652 INFO L124 PetriNetUnfolderBase]: 26571/39943 cut-off events. [2024-11-19 09:21:41,652 INFO L125 PetriNetUnfolderBase]: For 11368/11368 co-relation queries the response was YES. [2024-11-19 09:21:41,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109284 conditions, 39943 events. 26571/39943 cut-off events. For 11368/11368 co-relation queries the response was YES. Maximal size of possible extension queue 1905. Compared 288954 event pairs, 6830 based on Foata normal form. 0/27895 useless extension candidates. Maximal degree in co-relation 109274. Up to 21964 conditions per place. [2024-11-19 09:21:41,870 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 154 selfloop transitions, 20 changer transitions 0/185 dead transitions. [2024-11-19 09:21:41,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 185 transitions, 1210 flow [2024-11-19 09:21:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:41,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-11-19 09:21:41,871 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5494505494505495 [2024-11-19 09:21:41,871 INFO L175 Difference]: Start difference. First operand has 81 places, 106 transitions, 486 flow. Second operand 3 states and 150 transitions. [2024-11-19 09:21:41,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 185 transitions, 1210 flow [2024-11-19 09:21:41,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 185 transitions, 1198 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:41,906 INFO L231 Difference]: Finished difference. Result has 83 places, 122 transitions, 682 flow [2024-11-19 09:21:41,906 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=682, PETRI_PLACES=83, PETRI_TRANSITIONS=122} [2024-11-19 09:21:41,907 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -6 predicate places. [2024-11-19 09:21:41,907 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 122 transitions, 682 flow [2024-11-19 09:21:41,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:41,908 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:41,908 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:41,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 09:21:41,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:41,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:41,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1363075006, now seen corresponding path program 1 times [2024-11-19 09:21:41,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:41,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487868747] [2024-11-19 09:21:41,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:41,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:42,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487868747] [2024-11-19 09:21:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487868747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949863298] [2024-11-19 09:21:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:42,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:42,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-11-19 09:21:42,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 122 transitions, 682 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:42,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:42,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-11-19 09:21:42,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:44,678 INFO L124 PetriNetUnfolderBase]: 21181/32176 cut-off events. [2024-11-19 09:21:44,678 INFO L125 PetriNetUnfolderBase]: For 19925/19925 co-relation queries the response was YES. [2024-11-19 09:21:44,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97441 conditions, 32176 events. 21181/32176 cut-off events. For 19925/19925 co-relation queries the response was YES. Maximal size of possible extension queue 1493. Compared 229716 event pairs, 4516 based on Foata normal form. 1392/24979 useless extension candidates. Maximal degree in co-relation 97430. Up to 22665 conditions per place. [2024-11-19 09:21:44,895 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 153 selfloop transitions, 9 changer transitions 0/175 dead transitions. [2024-11-19 09:21:44,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 175 transitions, 1270 flow [2024-11-19 09:21:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-19 09:21:44,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4945054945054945 [2024-11-19 09:21:44,896 INFO L175 Difference]: Start difference. First operand has 83 places, 122 transitions, 682 flow. Second operand 3 states and 135 transitions. [2024-11-19 09:21:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 175 transitions, 1270 flow [2024-11-19 09:21:44,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 175 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:44,937 INFO L231 Difference]: Finished difference. Result has 80 places, 117 transitions, 638 flow [2024-11-19 09:21:44,938 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=80, PETRI_TRANSITIONS=117} [2024-11-19 09:21:44,938 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -9 predicate places. [2024-11-19 09:21:44,938 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 117 transitions, 638 flow [2024-11-19 09:21:44,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:44,938 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:44,938 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:44,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 09:21:44,939 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:44,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:44,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1313292464, now seen corresponding path program 1 times [2024-11-19 09:21:44,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:44,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639588959] [2024-11-19 09:21:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:44,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:44,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639588959] [2024-11-19 09:21:44,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639588959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:44,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:44,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:44,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200533051] [2024-11-19 09:21:44,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:44,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:44,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:44,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:44,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:44,987 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 91 [2024-11-19 09:21:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 117 transitions, 638 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:44,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:44,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 91 [2024-11-19 09:21:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:47,323 INFO L124 PetriNetUnfolderBase]: 23833/36255 cut-off events. [2024-11-19 09:21:47,323 INFO L125 PetriNetUnfolderBase]: For 21170/21206 co-relation queries the response was YES. [2024-11-19 09:21:47,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107553 conditions, 36255 events. 23833/36255 cut-off events. For 21170/21206 co-relation queries the response was YES. Maximal size of possible extension queue 1699. Compared 264965 event pairs, 5177 based on Foata normal form. 6/26978 useless extension candidates. Maximal degree in co-relation 107542. Up to 17258 conditions per place. [2024-11-19 09:21:47,526 INFO L140 encePairwiseOnDemand]: 79/91 looper letters, 159 selfloop transitions, 28 changer transitions 0/198 dead transitions. [2024-11-19 09:21:47,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 198 transitions, 1465 flow [2024-11-19 09:21:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:47,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2024-11-19 09:21:47,527 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5311355311355311 [2024-11-19 09:21:47,527 INFO L175 Difference]: Start difference. First operand has 80 places, 117 transitions, 638 flow. Second operand 3 states and 145 transitions. [2024-11-19 09:21:47,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 198 transitions, 1465 flow [2024-11-19 09:21:47,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 198 transitions, 1429 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:47,587 INFO L231 Difference]: Finished difference. Result has 82 places, 139 transitions, 942 flow [2024-11-19 09:21:47,587 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=942, PETRI_PLACES=82, PETRI_TRANSITIONS=139} [2024-11-19 09:21:47,588 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -7 predicate places. [2024-11-19 09:21:47,588 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 139 transitions, 942 flow [2024-11-19 09:21:47,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:47,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:47,588 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:47,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 09:21:47,588 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:47,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1313292465, now seen corresponding path program 1 times [2024-11-19 09:21:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792015010] [2024-11-19 09:21:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:47,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 09:21:47,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:47,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792015010] [2024-11-19 09:21:47,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792015010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:47,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:47,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 09:21:47,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054646705] [2024-11-19 09:21:47,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:47,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 09:21:47,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:47,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 09:21:47,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 09:21:47,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-11-19 09:21:47,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 139 transitions, 942 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:47,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:47,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-11-19 09:21:47,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 09:21:50,061 INFO L124 PetriNetUnfolderBase]: 19443/29728 cut-off events. [2024-11-19 09:21:50,061 INFO L125 PetriNetUnfolderBase]: For 30324/30360 co-relation queries the response was YES. [2024-11-19 09:21:50,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95680 conditions, 29728 events. 19443/29728 cut-off events. For 30324/30360 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 210651 event pairs, 3620 based on Foata normal form. 1161/24249 useless extension candidates. Maximal degree in co-relation 95668. Up to 19666 conditions per place. [2024-11-19 09:21:50,218 INFO L140 encePairwiseOnDemand]: 85/91 looper letters, 160 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2024-11-19 09:21:50,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 190 transitions, 1581 flow [2024-11-19 09:21:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 09:21:50,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 09:21:50,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2024-11-19 09:21:50,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-19 09:21:50,220 INFO L175 Difference]: Start difference. First operand has 82 places, 139 transitions, 942 flow. Second operand 3 states and 130 transitions. [2024-11-19 09:21:50,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 190 transitions, 1581 flow [2024-11-19 09:21:50,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 190 transitions, 1525 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 09:21:50,247 INFO L231 Difference]: Finished difference. Result has 79 places, 134 transitions, 898 flow [2024-11-19 09:21:50,248 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=898, PETRI_PLACES=79, PETRI_TRANSITIONS=134} [2024-11-19 09:21:50,248 INFO L277 CegarLoopForPetriNet]: 89 programPoint places, -10 predicate places. [2024-11-19 09:21:50,248 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 134 transitions, 898 flow [2024-11-19 09:21:50,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:50,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 09:21:50,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 09:21:50,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 09:21:50,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err14ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thr1Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 59 more)] === [2024-11-19 09:21:50,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 09:21:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1548825172, now seen corresponding path program 1 times [2024-11-19 09:21:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 09:21:50,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522742356] [2024-11-19 09:21:50,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 09:21:50,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 09:21:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 09:21:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 09:21:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 09:21:50,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522742356] [2024-11-19 09:21:50,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522742356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 09:21:50,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 09:21:50,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 09:21:50,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133479958] [2024-11-19 09:21:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 09:21:50,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 09:21:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 09:21:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 09:21:50,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-19 09:21:50,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 91 [2024-11-19 09:21:50,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 134 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 09:21:50,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 09:21:50,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 91 [2024-11-19 09:21:50,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand