./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:37:58,777 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:37:58,876 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:37:58,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:37:58,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:37:58,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:37:58,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:37:58,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:37:58,931 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:37:58,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:37:58,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:37:58,932 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:37:58,933 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:37:58,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:37:58,933 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:37:58,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:37:58,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:37:58,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:37:58,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:37:58,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:37:58,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:37:58,941 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:37:58,941 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:37:58,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:37:58,942 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:37:58,942 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:37:58,942 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:37:58,942 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:37:58,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:37:58,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:37:58,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:37:58,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:37:58,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:37:58,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:37:58,947 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:37:58,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:37:58,948 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:37:58,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:37:58,949 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:37:58,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:37:58,951 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:37:58,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:37:58,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-11-19 01:37:59,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:37:59,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:37:59,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:37:59,450 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:37:59,450 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:37:59,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-19 01:38:00,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:38:01,215 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:38:01,216 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-19 01:38:01,235 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5ba5c0a/edd453e951bb46008cea4429153d73df/FLAG6e6531eb3 [2024-11-19 01:38:01,248 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d5ba5c0a/edd453e951bb46008cea4429153d73df [2024-11-19 01:38:01,251 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:38:01,253 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:38:01,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:38:01,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:38:01,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:38:01,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1110e28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01, skipping insertion in model container [2024-11-19 01:38:01,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,327 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:38:01,675 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-11-19 01:38:01,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:38:01,743 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:38:01,799 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-11-19 01:38:01,810 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:38:01,906 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:38:01,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01 WrapperNode [2024-11-19 01:38:01,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:38:01,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:38:01,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:38:01,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:38:01,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,969 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2024-11-19 01:38:01,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:38:01,973 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:38:01,973 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:38:01,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:38:01,982 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,985 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,999 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 2, 6]. [2024-11-19 01:38:01,999 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:01,999 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,013 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,024 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,025 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:38:02,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:38:02,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:38:02,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:38:02,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (1/1) ... [2024-11-19 01:38:02,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:38:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:38:02,078 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 01:38:02,080 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 01:38:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-11-19 01:38:02,135 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-11-19 01:38:02,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 01:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 01:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-19 01:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:38:02,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:38:02,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 01:38:02,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:38:02,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:38:02,140 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 01:38:02,371 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:38:02,373 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:38:02,596 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:38:02,597 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:38:02,765 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:38:02,765 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 01:38:02,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:02 BoogieIcfgContainer [2024-11-19 01:38:02,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:38:02,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:38:02,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:38:02,774 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:38:02,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:38:01" (1/3) ... [2024-11-19 01:38:02,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef36a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:02, skipping insertion in model container [2024-11-19 01:38:02,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:38:01" (2/3) ... [2024-11-19 01:38:02,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef36a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:38:02, skipping insertion in model container [2024-11-19 01:38:02,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:02" (3/3) ... [2024-11-19 01:38:02,776 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2024-11-19 01:38:02,791 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:38:02,791 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-19 01:38:02,791 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:38:02,830 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:38:02,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2024-11-19 01:38:02,892 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2024-11-19 01:38:02,894 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:38:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 10/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2024-11-19 01:38:02,897 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2024-11-19 01:38:02,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2024-11-19 01:38:02,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:38:02,914 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=LoopHeads, 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;@4e22072, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:38:02,915 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-19 01:38:02,918 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:38:02,918 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-11-19 01:38:02,918 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-19 01:38:02,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:02,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-19 01:38:02,919 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:02,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:02,924 INFO L85 PathProgramCache]: Analyzing trace with hash 13054026, now seen corresponding path program 1 times [2024-11-19 01:38:02,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:02,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90300946] [2024-11-19 01:38:02,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:02,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:03,451 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 01:38:03,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:03,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90300946] [2024-11-19 01:38:03,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90300946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:03,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:03,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:38:03,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83103217] [2024-11-19 01:38:03,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:03,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:38:03,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:38:03,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:38:03,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:03,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 01:38:03,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:03,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:03,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:03,736 INFO L124 PetriNetUnfolderBase]: 466/835 cut-off events. [2024-11-19 01:38:03,736 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-19 01:38:03,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 835 events. 466/835 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3555 event pairs, 345 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 1550. Up to 602 conditions per place. [2024-11-19 01:38:03,742 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 39 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-11-19 01:38:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 218 flow [2024-11-19 01:38:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:38:03,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:38:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-19 01:38:03,751 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-19 01:38:03,752 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 3 states and 84 transitions. [2024-11-19 01:38:03,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 218 flow [2024-11-19 01:38:03,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:38:03,756 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 112 flow [2024-11-19 01:38:03,758 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-19 01:38:03,760 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-11-19 01:38:03,760 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 112 flow [2024-11-19 01:38:03,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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 01:38:03,761 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:03,761 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-19 01:38:03,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:38:03,761 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:03,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:03,762 INFO L85 PathProgramCache]: Analyzing trace with hash -339911441, now seen corresponding path program 1 times [2024-11-19 01:38:03,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:03,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706793287] [2024-11-19 01:38:03,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:03,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:03,900 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 01:38:03,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:03,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706793287] [2024-11-19 01:38:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706793287] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:03,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:03,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:38:03,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673621226] [2024-11-19 01:38:03,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:03,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:38:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:38:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:38:03,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:03,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 112 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 01:38:03,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:03,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:03,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:04,137 INFO L124 PetriNetUnfolderBase]: 466/821 cut-off events. [2024-11-19 01:38:04,138 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-19 01:38:04,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 821 events. 466/821 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3485 event pairs, 155 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 818. Up to 553 conditions per place. [2024-11-19 01:38:04,146 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 47 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-11-19 01:38:04,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 265 flow [2024-11-19 01:38:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:38:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-19 01:38:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-19 01:38:04,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-11-19 01:38:04,150 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 112 flow. Second operand 5 states and 109 transitions. [2024-11-19 01:38:04,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 265 flow [2024-11-19 01:38:04,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:38:04,155 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 126 flow [2024-11-19 01:38:04,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-19 01:38:04,155 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-11-19 01:38:04,155 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 126 flow [2024-11-19 01:38:04,156 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 01:38:04,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:04,156 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:04,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:38:04,156 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:04,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:04,157 INFO L85 PathProgramCache]: Analyzing trace with hash 80723095, now seen corresponding path program 1 times [2024-11-19 01:38:04,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:04,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765992628] [2024-11-19 01:38:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:04,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:04,371 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 01:38:04,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:04,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765992628] [2024-11-19 01:38:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765992628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:04,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:04,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:38:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707796479] [2024-11-19 01:38:04,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:04,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:38:04,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:04,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:38:04,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:38:04,393 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:04,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:38:04,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:04,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:04,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:04,573 INFO L124 PetriNetUnfolderBase]: 562/1029 cut-off events. [2024-11-19 01:38:04,573 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-19 01:38:04,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 1029 events. 562/1029 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4890 event pairs, 252 based on Foata normal form. 64/1092 useless extension candidates. Maximal degree in co-relation 228. Up to 545 conditions per place. [2024-11-19 01:38:04,579 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 49 selfloop transitions, 10 changer transitions 4/67 dead transitions. [2024-11-19 01:38:04,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 306 flow [2024-11-19 01:38:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:38:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:38:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-19 01:38:04,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-19 01:38:04,580 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2024-11-19 01:38:04,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 306 flow [2024-11-19 01:38:04,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-19 01:38:04,583 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 150 flow [2024-11-19 01:38:04,583 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-19 01:38:04,583 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2024-11-19 01:38:04,583 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 150 flow [2024-11-19 01:38:04,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 01:38:04,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:04,584 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:04,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:38:04,584 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:04,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1652907070, now seen corresponding path program 1 times [2024-11-19 01:38:04,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:04,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111892473] [2024-11-19 01:38:04,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:04,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:04,667 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 01:38:04,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:04,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111892473] [2024-11-19 01:38:04,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111892473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:04,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:04,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:38:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085521852] [2024-11-19 01:38:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:04,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:38:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:04,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:38:04,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:38:04,670 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-19 01:38:04,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 01:38:04,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:04,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-19 01:38:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:04,778 INFO L124 PetriNetUnfolderBase]: 225/408 cut-off events. [2024-11-19 01:38:04,778 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-19 01:38:04,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 408 events. 225/408 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1435 event pairs, 46 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 927. Up to 217 conditions per place. [2024-11-19 01:38:04,780 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-19 01:38:04,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 278 flow [2024-11-19 01:38:04,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:38:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:38:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-19 01:38:04,782 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-11-19 01:38:04,782 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 150 flow. Second operand 4 states and 131 transitions. [2024-11-19 01:38:04,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 278 flow [2024-11-19 01:38:04,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-19 01:38:04,784 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 96 flow [2024-11-19 01:38:04,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-11-19 01:38:04,785 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2024-11-19 01:38:04,785 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 96 flow [2024-11-19 01:38:04,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 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 01:38:04,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:04,786 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:04,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:38:04,786 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:04,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:04,786 INFO L85 PathProgramCache]: Analyzing trace with hash -62179198, now seen corresponding path program 1 times [2024-11-19 01:38:04,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:04,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525176593] [2024-11-19 01:38:04,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:04,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:05,110 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 01:38:05,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:05,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525176593] [2024-11-19 01:38:05,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525176593] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:05,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:38:05,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542618680] [2024-11-19 01:38:05,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:05,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:38:05,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:05,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:38:05,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:38:05,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-19 01:38:05,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 01:38:05,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:05,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-19 01:38:05,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:05,474 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-11-19 01:38:05,474 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-19 01:38:05,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 862 events. 483/862 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3897 event pairs, 64 based on Foata normal form. 8/868 useless extension candidates. Maximal degree in co-relation 366. Up to 223 conditions per place. [2024-11-19 01:38:05,478 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-11-19 01:38:05,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 113 transitions, 539 flow [2024-11-19 01:38:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:38:05,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:38:05,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-11-19 01:38:05,480 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283333333333333 [2024-11-19 01:38:05,480 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 96 flow. Second operand 10 states and 317 transitions. [2024-11-19 01:38:05,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 113 transitions, 539 flow [2024-11-19 01:38:05,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 113 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-19 01:38:05,483 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 272 flow [2024-11-19 01:38:05,483 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-19 01:38:05,483 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-11-19 01:38:05,484 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 272 flow [2024-11-19 01:38:05,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 01:38:05,484 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:05,484 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:05,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:38:05,485 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:05,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:05,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1900616770, now seen corresponding path program 2 times [2024-11-19 01:38:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:05,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422456758] [2024-11-19 01:38:05,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:38:05,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:05,516 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:38:05,517 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:05,808 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 01:38:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422456758] [2024-11-19 01:38:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422456758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:05,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:05,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:38:05,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109041969] [2024-11-19 01:38:05,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:05,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:38:05,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:05,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:38:05,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:38:05,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-19 01:38:05,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 01:38:05,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:05,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-19 01:38:05,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:06,539 INFO L124 PetriNetUnfolderBase]: 537/964 cut-off events. [2024-11-19 01:38:06,539 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2024-11-19 01:38:06,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 964 events. 537/964 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4456 event pairs, 30 based on Foata normal form. 8/970 useless extension candidates. Maximal degree in co-relation 1740. Up to 330 conditions per place. [2024-11-19 01:38:06,552 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 79 selfloop transitions, 48 changer transitions 0/134 dead transitions. [2024-11-19 01:38:06,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 966 flow [2024-11-19 01:38:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:38:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:38:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 326 transitions. [2024-11-19 01:38:06,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-19 01:38:06,554 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 272 flow. Second operand 11 states and 326 transitions. [2024-11-19 01:38:06,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 966 flow [2024-11-19 01:38:06,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:38:06,564 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 638 flow [2024-11-19 01:38:06,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-11-19 01:38:06,564 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-11-19 01:38:06,565 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 638 flow [2024-11-19 01:38:06,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 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 01:38:06,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:06,565 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:06,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:38:06,567 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:06,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:06,567 INFO L85 PathProgramCache]: Analyzing trace with hash -426585704, now seen corresponding path program 3 times [2024-11-19 01:38:06,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:06,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264800349] [2024-11-19 01:38:06,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:38:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:06,666 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:38:06,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:07,329 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 01:38:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264800349] [2024-11-19 01:38:07,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264800349] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:07,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:38:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819502422] [2024-11-19 01:38:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:07,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:38:07,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:07,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:38:07,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:38:07,358 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:07,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 01:38:07,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:07,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:07,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:07,811 INFO L124 PetriNetUnfolderBase]: 630/1157 cut-off events. [2024-11-19 01:38:07,812 INFO L125 PetriNetUnfolderBase]: For 3454/3454 co-relation queries the response was YES. [2024-11-19 01:38:07,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1157 events. 630/1157 cut-off events. For 3454/3454 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5696 event pairs, 18 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 2433. Up to 338 conditions per place. [2024-11-19 01:38:07,823 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 101 selfloop transitions, 52 changer transitions 0/155 dead transitions. [2024-11-19 01:38:07,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1417 flow [2024-11-19 01:38:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:38:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:38:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-11-19 01:38:07,824 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2861111111111111 [2024-11-19 01:38:07,825 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 638 flow. Second operand 12 states and 206 transitions. [2024-11-19 01:38:07,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1417 flow [2024-11-19 01:38:07,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 155 transitions, 1363 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-19 01:38:07,839 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 852 flow [2024-11-19 01:38:07,839 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=852, PETRI_PLACES=81, PETRI_TRANSITIONS=98} [2024-11-19 01:38:07,840 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-11-19 01:38:07,840 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 852 flow [2024-11-19 01:38:07,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 01:38:07,841 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:07,841 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:07,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:38:07,841 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:07,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash 58282096, now seen corresponding path program 4 times [2024-11-19 01:38:07,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:07,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440862307] [2024-11-19 01:38:07,843 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:38:07,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:07,888 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:38:07,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:08,620 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 01:38:08,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:08,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440862307] [2024-11-19 01:38:08,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440862307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:08,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:08,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:38:08,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078696266] [2024-11-19 01:38:08,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:08,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:38:08,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:38:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:38:08,647 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:08,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 98 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 01:38:08,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:08,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:08,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:09,106 INFO L124 PetriNetUnfolderBase]: 630/1153 cut-off events. [2024-11-19 01:38:09,106 INFO L125 PetriNetUnfolderBase]: For 4524/4524 co-relation queries the response was YES. [2024-11-19 01:38:09,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4874 conditions, 1153 events. 630/1153 cut-off events. For 4524/4524 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5654 event pairs, 48 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 4826. Up to 332 conditions per place. [2024-11-19 01:38:09,116 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 91 selfloop transitions, 52 changer transitions 0/144 dead transitions. [2024-11-19 01:38:09,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 1441 flow [2024-11-19 01:38:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:38:09,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:38:09,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-11-19 01:38:09,118 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28055555555555556 [2024-11-19 01:38:09,118 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 852 flow. Second operand 12 states and 202 transitions. [2024-11-19 01:38:09,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 1441 flow [2024-11-19 01:38:09,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 1379 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-19 01:38:09,134 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 921 flow [2024-11-19 01:38:09,134 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=921, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-11-19 01:38:09,135 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-11-19 01:38:09,135 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 921 flow [2024-11-19 01:38:09,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 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 01:38:09,135 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:09,136 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:09,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:38:09,136 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:09,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:09,137 INFO L85 PathProgramCache]: Analyzing trace with hash -17525711, now seen corresponding path program 1 times [2024-11-19 01:38:09,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:09,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643280428] [2024-11-19 01:38:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:38:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:10,161 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 01:38:10,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:10,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643280428] [2024-11-19 01:38:10,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643280428] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:10,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:10,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:10,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978729469] [2024-11-19 01:38:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:10,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:10,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:10,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:10,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:10,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:10,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 921 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:10,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:10,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:10,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:11,421 INFO L124 PetriNetUnfolderBase]: 763/1396 cut-off events. [2024-11-19 01:38:11,421 INFO L125 PetriNetUnfolderBase]: For 6622/6622 co-relation queries the response was YES. [2024-11-19 01:38:11,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 1396 events. 763/1396 cut-off events. For 6622/6622 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7103 event pairs, 144 based on Foata normal form. 1/1397 useless extension candidates. Maximal degree in co-relation 4059. Up to 812 conditions per place. [2024-11-19 01:38:11,434 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 105 selfloop transitions, 44 changer transitions 33/183 dead transitions. [2024-11-19 01:38:11,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 1963 flow [2024-11-19 01:38:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:38:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:38:11,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2024-11-19 01:38:11,440 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2722222222222222 [2024-11-19 01:38:11,441 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 921 flow. Second operand 15 states and 245 transitions. [2024-11-19 01:38:11,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 1963 flow [2024-11-19 01:38:11,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 1839 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-19 01:38:11,469 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 1145 flow [2024-11-19 01:38:11,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1145, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2024-11-19 01:38:11,472 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-11-19 01:38:11,472 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 1145 flow [2024-11-19 01:38:11,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:11,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:11,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:11,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:38:11,473 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:11,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:11,474 INFO L85 PathProgramCache]: Analyzing trace with hash 966994303, now seen corresponding path program 2 times [2024-11-19 01:38:11,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:11,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720303328] [2024-11-19 01:38:11,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:38:11,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:11,527 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:38:11,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:11,939 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 01:38:11,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:11,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720303328] [2024-11-19 01:38:11,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720303328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:11,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:11,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:38:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514357330] [2024-11-19 01:38:11,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:11,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:38:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:11,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:38:11,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:38:11,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-19 01:38:11,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 1145 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 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 01:38:11,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:11,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-19 01:38:11,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:12,434 INFO L124 PetriNetUnfolderBase]: 619/1146 cut-off events. [2024-11-19 01:38:12,436 INFO L125 PetriNetUnfolderBase]: For 5924/5924 co-relation queries the response was YES. [2024-11-19 01:38:12,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5262 conditions, 1146 events. 619/1146 cut-off events. For 5924/5924 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5778 event pairs, 60 based on Foata normal form. 8/1154 useless extension candidates. Maximal degree in co-relation 5225. Up to 636 conditions per place. [2024-11-19 01:38:12,444 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 89 selfloop transitions, 73 changer transitions 0/168 dead transitions. [2024-11-19 01:38:12,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 168 transitions, 2022 flow [2024-11-19 01:38:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:38:12,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-19 01:38:12,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 272 transitions. [2024-11-19 01:38:12,445 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-11-19 01:38:12,445 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 1145 flow. Second operand 9 states and 272 transitions. [2024-11-19 01:38:12,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 168 transitions, 2022 flow [2024-11-19 01:38:12,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 168 transitions, 1835 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-19 01:38:12,469 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1633 flow [2024-11-19 01:38:12,471 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1633, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2024-11-19 01:38:12,472 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-11-19 01:38:12,472 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1633 flow [2024-11-19 01:38:12,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 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 01:38:12,472 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:12,472 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:12,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:38:12,474 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:12,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 293806189, now seen corresponding path program 3 times [2024-11-19 01:38:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363280553] [2024-11-19 01:38:12,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:38:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:12,513 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:38:12,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:13,566 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 01:38:13,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:13,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363280553] [2024-11-19 01:38:13,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363280553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:13,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:13,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:38:13,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079409415] [2024-11-19 01:38:13,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:13,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:38:13,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:13,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:38:13,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:38:13,600 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:13,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1633 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:13,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:13,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:13,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:14,439 INFO L124 PetriNetUnfolderBase]: 666/1245 cut-off events. [2024-11-19 01:38:14,439 INFO L125 PetriNetUnfolderBase]: For 6723/6723 co-relation queries the response was YES. [2024-11-19 01:38:14,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 1245 events. 666/1245 cut-off events. For 6723/6723 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6311 event pairs, 126 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 5604. Up to 781 conditions per place. [2024-11-19 01:38:14,450 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 117 selfloop transitions, 50 changer transitions 32/200 dead transitions. [2024-11-19 01:38:14,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 200 transitions, 2538 flow [2024-11-19 01:38:14,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:38:14,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:38:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2024-11-19 01:38:14,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-11-19 01:38:14,453 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1633 flow. Second operand 14 states and 224 transitions. [2024-11-19 01:38:14,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 200 transitions, 2538 flow [2024-11-19 01:38:14,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 200 transitions, 2428 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-11-19 01:38:14,487 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 1619 flow [2024-11-19 01:38:14,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1619, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2024-11-19 01:38:14,488 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-11-19 01:38:14,489 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 1619 flow [2024-11-19 01:38:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:14,489 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:14,489 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:14,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:38:14,490 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:14,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:14,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1926880621, now seen corresponding path program 4 times [2024-11-19 01:38:14,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:14,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667573122] [2024-11-19 01:38:14,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:38:14,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:14,525 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:38:14,526 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:15,502 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 01:38:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667573122] [2024-11-19 01:38:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667573122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:38:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550155732] [2024-11-19 01:38:15,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:15,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:38:15,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:15,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:38:15,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:38:15,527 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:15,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 1619 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:15,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:15,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:15,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:16,374 INFO L124 PetriNetUnfolderBase]: 676/1275 cut-off events. [2024-11-19 01:38:16,375 INFO L125 PetriNetUnfolderBase]: For 6447/6447 co-relation queries the response was YES. [2024-11-19 01:38:16,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6048 conditions, 1275 events. 676/1275 cut-off events. For 6447/6447 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6618 event pairs, 136 based on Foata normal form. 1/1276 useless extension candidates. Maximal degree in co-relation 6003. Up to 921 conditions per place. [2024-11-19 01:38:16,387 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 100 selfloop transitions, 53 changer transitions 48/202 dead transitions. [2024-11-19 01:38:16,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 202 transitions, 2545 flow [2024-11-19 01:38:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:38:16,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:38:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-19 01:38:16,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-11-19 01:38:16,389 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 1619 flow. Second operand 14 states and 231 transitions. [2024-11-19 01:38:16,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 202 transitions, 2545 flow [2024-11-19 01:38:16,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 202 transitions, 2435 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-19 01:38:16,421 INFO L231 Difference]: Finished difference. Result has 117 places, 140 transitions, 1737 flow [2024-11-19 01:38:16,421 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1737, PETRI_PLACES=117, PETRI_TRANSITIONS=140} [2024-11-19 01:38:16,422 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-19 01:38:16,422 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 140 transitions, 1737 flow [2024-11-19 01:38:16,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:16,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:16,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:16,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:38:16,423 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:16,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:16,424 INFO L85 PathProgramCache]: Analyzing trace with hash -835392765, now seen corresponding path program 5 times [2024-11-19 01:38:16,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:16,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84896754] [2024-11-19 01:38:16,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:38:16,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:16,463 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:38:16,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:17,305 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 01:38:17,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:17,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84896754] [2024-11-19 01:38:17,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84896754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:17,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:17,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:17,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843815434] [2024-11-19 01:38:17,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:17,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:17,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:17,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:17,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:17,341 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:17,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 1737 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:17,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:17,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:17,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:18,058 INFO L124 PetriNetUnfolderBase]: 740/1377 cut-off events. [2024-11-19 01:38:18,059 INFO L125 PetriNetUnfolderBase]: For 7478/7478 co-relation queries the response was YES. [2024-11-19 01:38:18,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 1377 events. 740/1377 cut-off events. For 7478/7478 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7146 event pairs, 177 based on Foata normal form. 1/1378 useless extension candidates. Maximal degree in co-relation 6610. Up to 921 conditions per place. [2024-11-19 01:38:18,072 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 124 selfloop transitions, 55 changer transitions 39/219 dead transitions. [2024-11-19 01:38:18,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 219 transitions, 2874 flow [2024-11-19 01:38:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:38:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:38:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 247 transitions. [2024-11-19 01:38:18,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27444444444444444 [2024-11-19 01:38:18,074 INFO L175 Difference]: Start difference. First operand has 117 places, 140 transitions, 1737 flow. Second operand 15 states and 247 transitions. [2024-11-19 01:38:18,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 219 transitions, 2874 flow [2024-11-19 01:38:18,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 219 transitions, 2726 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-19 01:38:18,101 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1877 flow [2024-11-19 01:38:18,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1877, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-11-19 01:38:18,102 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-19 01:38:18,102 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1877 flow [2024-11-19 01:38:18,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:18,102 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:18,102 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:18,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:38:18,103 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:18,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash 583214691, now seen corresponding path program 6 times [2024-11-19 01:38:18,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:18,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166540414] [2024-11-19 01:38:18,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:38:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:18,132 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:38:18,132 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:18,916 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 01:38:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:18,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166540414] [2024-11-19 01:38:18,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166540414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:18,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:18,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419251101] [2024-11-19 01:38:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:18,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:18,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:18,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:18,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:18,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1877 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:18,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:18,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:18,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:19,960 INFO L124 PetriNetUnfolderBase]: 683/1288 cut-off events. [2024-11-19 01:38:19,962 INFO L125 PetriNetUnfolderBase]: For 7074/7074 co-relation queries the response was YES. [2024-11-19 01:38:19,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 1288 events. 683/1288 cut-off events. For 7074/7074 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6747 event pairs, 176 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 6268. Up to 866 conditions per place. [2024-11-19 01:38:19,982 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 122 selfloop transitions, 45 changer transitions 53/221 dead transitions. [2024-11-19 01:38:19,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 221 transitions, 2933 flow [2024-11-19 01:38:19,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:38:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:38:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-19 01:38:19,988 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-11-19 01:38:19,988 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1877 flow. Second operand 14 states and 231 transitions. [2024-11-19 01:38:19,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 221 transitions, 2933 flow [2024-11-19 01:38:20,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 221 transitions, 2866 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-19 01:38:20,059 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 1833 flow [2024-11-19 01:38:20,059 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1833, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2024-11-19 01:38:20,059 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-11-19 01:38:20,059 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 1833 flow [2024-11-19 01:38:20,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:20,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:20,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:20,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:38:20,060 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:20,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash 2121569829, now seen corresponding path program 7 times [2024-11-19 01:38:20,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:20,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034065012] [2024-11-19 01:38:20,061 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:38:20,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:21,194 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 01:38:21,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:21,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034065012] [2024-11-19 01:38:21,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034065012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:21,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:21,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:38:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532645922] [2024-11-19 01:38:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:21,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:38:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:38:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:38:21,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:21,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 1833 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:21,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:21,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:21,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:21,881 INFO L124 PetriNetUnfolderBase]: 547/1034 cut-off events. [2024-11-19 01:38:21,881 INFO L125 PetriNetUnfolderBase]: For 6146/6146 co-relation queries the response was YES. [2024-11-19 01:38:21,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 1034 events. 547/1034 cut-off events. For 6146/6146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5115 event pairs, 147 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 5093. Up to 751 conditions per place. [2024-11-19 01:38:21,888 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 96 selfloop transitions, 36 changer transitions 54/187 dead transitions. [2024-11-19 01:38:21,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 187 transitions, 2472 flow [2024-11-19 01:38:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:38:21,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:38:21,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-11-19 01:38:21,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2782051282051282 [2024-11-19 01:38:21,890 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 1833 flow. Second operand 13 states and 217 transitions. [2024-11-19 01:38:21,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 187 transitions, 2472 flow [2024-11-19 01:38:21,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 187 transitions, 2366 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-19 01:38:21,911 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1525 flow [2024-11-19 01:38:21,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1525, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2024-11-19 01:38:21,913 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-11-19 01:38:21,913 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1525 flow [2024-11-19 01:38:21,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:21,913 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:21,913 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:21,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:38:21,914 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash -944301171, now seen corresponding path program 8 times [2024-11-19 01:38:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674652510] [2024-11-19 01:38:21,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:38:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:21,943 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:38:21,943 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:22,201 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 01:38:22,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:22,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674652510] [2024-11-19 01:38:22,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674652510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:22,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:22,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:38:22,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892750259] [2024-11-19 01:38:22,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:22,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:38:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:22,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:38:22,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:38:22,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-19 01:38:22,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1525 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 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 01:38:22,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:22,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-19 01:38:22,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:22,504 INFO L124 PetriNetUnfolderBase]: 395/760 cut-off events. [2024-11-19 01:38:22,504 INFO L125 PetriNetUnfolderBase]: For 4571/4571 co-relation queries the response was YES. [2024-11-19 01:38:22,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 760 events. 395/760 cut-off events. For 4571/4571 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3502 event pairs, 48 based on Foata normal form. 12/772 useless extension candidates. Maximal degree in co-relation 3722. Up to 350 conditions per place. [2024-11-19 01:38:22,509 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 81 selfloop transitions, 52 changer transitions 3/142 dead transitions. [2024-11-19 01:38:22,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 142 transitions, 1802 flow [2024-11-19 01:38:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:38:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:38:22,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-11-19 01:38:22,510 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-11-19 01:38:22,510 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1525 flow. Second operand 10 states and 302 transitions. [2024-11-19 01:38:22,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 142 transitions, 1802 flow [2024-11-19 01:38:22,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 142 transitions, 1658 flow, removed 36 selfloop flow, removed 16 redundant places. [2024-11-19 01:38:22,526 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 1439 flow [2024-11-19 01:38:22,526 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-11-19 01:38:22,527 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-19 01:38:22,527 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 1439 flow [2024-11-19 01:38:22,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 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 01:38:22,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:22,528 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:22,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:38:22,528 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:22,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash 896429373, now seen corresponding path program 9 times [2024-11-19 01:38:22,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902305456] [2024-11-19 01:38:22,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:38:22,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:22,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:38:22,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:23,311 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 01:38:23,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:23,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902305456] [2024-11-19 01:38:23,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902305456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:23,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:23,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:23,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661060770] [2024-11-19 01:38:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:23,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:23,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:23,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:23,363 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:23,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:23,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:23,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:23,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:24,067 INFO L124 PetriNetUnfolderBase]: 425/814 cut-off events. [2024-11-19 01:38:24,067 INFO L125 PetriNetUnfolderBase]: For 4545/4545 co-relation queries the response was YES. [2024-11-19 01:38:24,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 814 events. 425/814 cut-off events. For 4545/4545 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3817 event pairs, 96 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 3857. Up to 524 conditions per place. [2024-11-19 01:38:24,073 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 80 selfloop transitions, 29 changer transitions 42/152 dead transitions. [2024-11-19 01:38:24,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 1921 flow [2024-11-19 01:38:24,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:38:24,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-19 01:38:24,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2024-11-19 01:38:24,074 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26785714285714285 [2024-11-19 01:38:24,074 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 1439 flow. Second operand 14 states and 225 transitions. [2024-11-19 01:38:24,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 1921 flow [2024-11-19 01:38:24,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 152 transitions, 1820 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-19 01:38:24,088 INFO L231 Difference]: Finished difference. Result has 126 places, 94 transitions, 1054 flow [2024-11-19 01:38:24,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1054, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2024-11-19 01:38:24,089 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-11-19 01:38:24,089 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 1054 flow [2024-11-19 01:38:24,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:24,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:24,090 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:24,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:38:24,090 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:24,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1901600429, now seen corresponding path program 10 times [2024-11-19 01:38:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:24,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007889429] [2024-11-19 01:38:24,091 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:38:24,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:24,125 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:38:24,125 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:24,479 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 01:38:24,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:24,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007889429] [2024-11-19 01:38:24,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007889429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:24,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:24,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:38:24,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937664917] [2024-11-19 01:38:24,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:24,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:38:24,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:24,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:38:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:38:24,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-19 01:38:24,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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 01:38:24,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:24,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-19 01:38:24,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:24,872 INFO L124 PetriNetUnfolderBase]: 312/601 cut-off events. [2024-11-19 01:38:24,872 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2024-11-19 01:38:24,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 601 events. 312/601 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2647 event pairs, 30 based on Foata normal form. 10/611 useless extension candidates. Maximal degree in co-relation 2852. Up to 260 conditions per place. [2024-11-19 01:38:24,877 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 67 selfloop transitions, 48 changer transitions 3/124 dead transitions. [2024-11-19 01:38:24,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1531 flow [2024-11-19 01:38:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:38:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-19 01:38:24,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-11-19 01:38:24,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597222222222222 [2024-11-19 01:38:24,879 INFO L175 Difference]: Start difference. First operand has 126 places, 94 transitions, 1054 flow. Second operand 12 states and 331 transitions. [2024-11-19 01:38:24,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1531 flow [2024-11-19 01:38:24,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 124 transitions, 1298 flow, removed 41 selfloop flow, removed 22 redundant places. [2024-11-19 01:38:24,890 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 1047 flow [2024-11-19 01:38:24,890 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1047, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2024-11-19 01:38:24,891 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-11-19 01:38:24,891 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 1047 flow [2024-11-19 01:38:24,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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 01:38:24,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:24,892 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:24,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:38:24,892 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:24,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1181854393, now seen corresponding path program 11 times [2024-11-19 01:38:24,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:24,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839718865] [2024-11-19 01:38:24,893 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:38:24,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:24,922 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:38:24,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:25,685 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 01:38:25,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:25,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839718865] [2024-11-19 01:38:25,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839718865] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:25,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:25,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226557354] [2024-11-19 01:38:25,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:25,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:25,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:25,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:25,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 1047 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:25,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:25,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:25,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:26,427 INFO L124 PetriNetUnfolderBase]: 362/701 cut-off events. [2024-11-19 01:38:26,427 INFO L125 PetriNetUnfolderBase]: For 3009/3009 co-relation queries the response was YES. [2024-11-19 01:38:26,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 701 events. 362/701 cut-off events. For 3009/3009 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3123 event pairs, 71 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 2989. Up to 280 conditions per place. [2024-11-19 01:38:26,431 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 74 selfloop transitions, 31 changer transitions 50/156 dead transitions. [2024-11-19 01:38:26,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 156 transitions, 1789 flow [2024-11-19 01:38:26,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:38:26,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:38:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 235 transitions. [2024-11-19 01:38:26,434 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2611111111111111 [2024-11-19 01:38:26,434 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 1047 flow. Second operand 15 states and 235 transitions. [2024-11-19 01:38:26,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 156 transitions, 1789 flow [2024-11-19 01:38:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 1584 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-11-19 01:38:26,448 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 835 flow [2024-11-19 01:38:26,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=835, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-11-19 01:38:26,448 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-11-19 01:38:26,448 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 835 flow [2024-11-19 01:38:26,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:26,449 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:26,449 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:26,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:38:26,449 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:26,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:26,450 INFO L85 PathProgramCache]: Analyzing trace with hash -401347347, now seen corresponding path program 12 times [2024-11-19 01:38:26,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:26,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392562151] [2024-11-19 01:38:26,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:38:26,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:26,478 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:38:26,479 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:38:27,384 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 01:38:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392562151] [2024-11-19 01:38:27,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392562151] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:27,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:27,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:38:27,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342588553] [2024-11-19 01:38:27,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:27,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:38:27,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:27,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:38:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:38:27,435 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:27,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 835 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:27,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:27,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:27,964 INFO L124 PetriNetUnfolderBase]: 241/476 cut-off events. [2024-11-19 01:38:27,965 INFO L125 PetriNetUnfolderBase]: For 1591/1591 co-relation queries the response was YES. [2024-11-19 01:38:27,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 476 events. 241/476 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1901 event pairs, 52 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 1990. Up to 194 conditions per place. [2024-11-19 01:38:27,967 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 43 selfloop transitions, 11 changer transitions 66/121 dead transitions. [2024-11-19 01:38:27,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 1235 flow [2024-11-19 01:38:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-19 01:38:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-19 01:38:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 225 transitions. [2024-11-19 01:38:27,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25 [2024-11-19 01:38:27,968 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 835 flow. Second operand 15 states and 225 transitions. [2024-11-19 01:38:27,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 1235 flow [2024-11-19 01:38:27,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 1164 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-19 01:38:27,974 INFO L231 Difference]: Finished difference. Result has 102 places, 53 transitions, 397 flow [2024-11-19 01:38:27,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=397, PETRI_PLACES=102, PETRI_TRANSITIONS=53} [2024-11-19 01:38:27,974 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-11-19 01:38:27,975 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 53 transitions, 397 flow [2024-11-19 01:38:27,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 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 01:38:27,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:38:27,975 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:38:27,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:38:27,975 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-19 01:38:27,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:38:27,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1144104591, now seen corresponding path program 13 times [2024-11-19 01:38:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:38:27,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169237363] [2024-11-19 01:38:27,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:38:27,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:38:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:38:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:38:28,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:38:28,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169237363] [2024-11-19 01:38:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169237363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:38:28,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:38:28,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:38:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115975448] [2024-11-19 01:38:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:38:28,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:38:28,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:38:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:38:28,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:38:28,766 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-19 01:38:28,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 53 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:28,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:38:28,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-19 01:38:28,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:38:29,278 INFO L124 PetriNetUnfolderBase]: 104/219 cut-off events. [2024-11-19 01:38:29,278 INFO L125 PetriNetUnfolderBase]: For 559/559 co-relation queries the response was YES. [2024-11-19 01:38:29,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 219 events. 104/219 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 666 event pairs, 10 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 859. Up to 84 conditions per place. [2024-11-19 01:38:29,280 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2024-11-19 01:38:29,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 65 transitions, 551 flow [2024-11-19 01:38:29,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:38:29,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-19 01:38:29,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 182 transitions. [2024-11-19 01:38:29,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23333333333333334 [2024-11-19 01:38:29,282 INFO L175 Difference]: Start difference. First operand has 102 places, 53 transitions, 397 flow. Second operand 13 states and 182 transitions. [2024-11-19 01:38:29,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 65 transitions, 551 flow [2024-11-19 01:38:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 426 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-11-19 01:38:29,285 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2024-11-19 01:38:29,285 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2024-11-19 01:38:29,285 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-11-19 01:38:29,286 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2024-11-19 01:38:29,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 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 01:38:29,288 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-11-19 01:38:29,289 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-11-19 01:38:29,289 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-11-19 01:38:29,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-11-19 01:38:29,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-11-19 01:38:29,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-11-19 01:38:29,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-11-19 01:38:29,290 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-11-19 01:38:29,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:38:29,290 INFO L407 BasicCegarLoop]: Path program histogram: [13, 4, 1, 1, 1, 1] [2024-11-19 01:38:29,293 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-19 01:38:29,293 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-19 01:38:29,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:38:29 BasicIcfg [2024-11-19 01:38:29,298 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-19 01:38:29,298 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-19 01:38:29,299 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-19 01:38:29,299 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-19 01:38:29,299 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:38:02" (3/4) ... [2024-11-19 01:38:29,301 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-19 01:38:29,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-11-19 01:38:29,310 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 81 nodes and edges [2024-11-19 01:38:29,311 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-19 01:38:29,311 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-19 01:38:29,311 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-19 01:38:29,417 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-19 01:38:29,417 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-19 01:38:29,418 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-19 01:38:29,418 INFO L158 Benchmark]: Toolchain (without parser) took 28165.42ms. Allocated memory was 222.3MB in the beginning and 1.1GB in the end (delta: 878.7MB). Free memory was 147.8MB in the beginning and 802.3MB in the end (delta: -654.4MB). Peak memory consumption was 224.8MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,418 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 222.3MB. Free memory is still 182.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-19 01:38:29,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 649.00ms. Allocated memory is still 222.3MB. Free memory was 147.6MB in the beginning and 180.4MB in the end (delta: -32.8MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,419 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.28ms. Allocated memory is still 222.3MB. Free memory was 180.4MB in the beginning and 177.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,419 INFO L158 Benchmark]: Boogie Preprocessor took 59.99ms. Allocated memory is still 222.3MB. Free memory was 177.2MB in the beginning and 174.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,420 INFO L158 Benchmark]: RCFGBuilder took 725.92ms. Allocated memory is still 222.3MB. Free memory was 174.1MB in the beginning and 131.1MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,421 INFO L158 Benchmark]: TraceAbstraction took 26530.53ms. Allocated memory was 222.3MB in the beginning and 1.1GB in the end (delta: 878.7MB). Free memory was 131.1MB in the beginning and 808.5MB in the end (delta: -677.5MB). Peak memory consumption was 203.4MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,421 INFO L158 Benchmark]: Witness Printer took 119.12ms. Allocated memory is still 1.1GB. Free memory was 808.5MB in the beginning and 802.3MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-19 01:38:29,423 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 222.3MB. Free memory is still 182.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 649.00ms. Allocated memory is still 222.3MB. Free memory was 147.6MB in the beginning and 180.4MB in the end (delta: -32.8MB). Peak memory consumption was 38.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.28ms. Allocated memory is still 222.3MB. Free memory was 180.4MB in the beginning and 177.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.99ms. Allocated memory is still 222.3MB. Free memory was 177.2MB in the beginning and 174.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 725.92ms. Allocated memory is still 222.3MB. Free memory was 174.1MB in the beginning and 131.1MB in the end (delta: 43.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 26530.53ms. Allocated memory was 222.3MB in the beginning and 1.1GB in the end (delta: 878.7MB). Free memory was 131.1MB in the beginning and 808.5MB in the end (delta: -677.5MB). Peak memory consumption was 203.4MB. Max. memory is 16.1GB. * Witness Printer took 119.12ms. Allocated memory is still 1.1GB. Free memory was 808.5MB in the beginning and 802.3MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 3885]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 60 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 26.4s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1940 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1790 mSDsluCounter, 2477 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2329 mSDsCounter, 226 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7617 IncrementalHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 226 mSolverCounterUnsat, 148 mSDtfsCounter, 7617 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1877occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.5s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 543 ConstructedInterpolants, 0 QuantifiedInterpolants, 5700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-19 01:38:29,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE