./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! 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-dev-84cfde4 [2024-10-11 14:20:12,695 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:20:12,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:20:12,813 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:20:12,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:20:12,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:20:12,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:20:12,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:20:12,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:20:12,850 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:20:12,851 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:20:12,851 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:20:12,852 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:20:12,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:20:12,852 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:20:12,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:20:12,853 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:20:12,854 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:20:12,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:20:12,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:20:12,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:20:12,855 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:20:12,855 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:20:12,856 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:20:12,856 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:20:12,856 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:20:12,857 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:20:12,857 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:20:12,858 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:20:12,858 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:20:12,858 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:20:12,859 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:20:12,859 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:20:12,859 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:20:12,860 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:20:12,860 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:20:12,860 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:20:12,860 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:20:12,861 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:20:12,861 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:20:12,861 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:20:12,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:20:12,866 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-10-11 14:20:13,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:20:13,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:20:13,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:20:13,145 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:20:13,146 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:20:13,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-10-11 14:20:14,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:20:14,985 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:20:14,986 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-10-11 14:20:15,028 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3411b8747/1c4b0b32522d472dbb09de28ce762b94/FLAG651983e6c [2024-10-11 14:20:15,041 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/3411b8747/1c4b0b32522d472dbb09de28ce762b94 [2024-10-11 14:20:15,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:20:15,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:20:15,049 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:20:15,049 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:20:15,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:20:15,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,058 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@310ea3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15, skipping insertion in model container [2024-10-11 14:20:15,058 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,134 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:20:15,589 WARN L248 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] [2024-10-11 14:20:15,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:20:15,655 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:20:15,699 WARN L248 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] [2024-10-11 14:20:15,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:20:15,764 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:20:15,764 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15 WrapperNode [2024-10-11 14:20:15,765 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:20:15,766 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:20:15,766 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:20:15,766 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:20:15,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,838 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2024-10-11 14:20:15,842 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:20:15,843 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:20:15,843 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:20:15,843 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:20:15,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,862 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,892 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]. [2024-10-11 14:20:15,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,907 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,909 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,915 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,920 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:20:15,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:20:15,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:20:15,923 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:20:15,924 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (1/1) ... [2024-10-11 14:20:15,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:20:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:20:15,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:20:15,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:20:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-10-11 14:20:16,026 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-10-11 14:20:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 14:20:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 14:20:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:20:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:20:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 14:20:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 14:20:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 14:20:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:20:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:20:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:20:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:20:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:20:16,034 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:20:16,306 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:20:16,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:20:16,626 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:20:16,626 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:20:16,843 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:20:16,843 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-11 14:20:16,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:16 BoogieIcfgContainer [2024-10-11 14:20:16,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:20:16,846 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:20:16,847 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:20:16,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:20:16,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:20:15" (1/3) ... [2024-10-11 14:20:16,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a7347a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:16, skipping insertion in model container [2024-10-11 14:20:16,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:20:15" (2/3) ... [2024-10-11 14:20:16,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48a7347a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:20:16, skipping insertion in model container [2024-10-11 14:20:16,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:16" (3/3) ... [2024-10-11 14:20:16,855 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2024-10-11 14:20:16,869 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:20:16,869 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-11 14:20:16,869 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:20:16,922 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:20:16,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2024-10-11 14:20:17,009 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2024-10-11 14:20:17,009 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-11 14:20:17,012 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. [2024-10-11 14:20:17,013 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2024-10-11 14:20:17,018 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2024-10-11 14:20:17,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:20:17,035 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;@6eba7bf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:20:17,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-10-11 14:20:17,038 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:20:17,039 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-10-11 14:20:17,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:20:17,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:17,040 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-10-11 14:20:17,040 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)] === [2024-10-11 14:20:17,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:17,048 INFO L85 PathProgramCache]: Analyzing trace with hash 13054026, now seen corresponding path program 1 times [2024-10-11 14:20:17,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637922527] [2024-10-11 14:20:17,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:17,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:17,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:17,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:17,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637922527] [2024-10-11 14:20:17,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637922527] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:17,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:17,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 14:20:17,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330878574] [2024-10-11 14:20:17,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:17,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:20:17,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:20:17,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:20:17,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:17,714 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) [2024-10-11 14:20:17,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:17,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:17,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:18,032 INFO L124 PetriNetUnfolderBase]: 466/835 cut-off events. [2024-10-11 14:20:18,033 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-11 14:20:18,037 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. [2024-10-11 14:20:18,047 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 39 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-10-11 14:20:18,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 218 flow [2024-10-11 14:20:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:20:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:20:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-10-11 14:20:18,063 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-10-11 14:20:18,065 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 3 states and 84 transitions. [2024-10-11 14:20:18,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 218 flow [2024-10-11 14:20:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-11 14:20:18,074 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 112 flow [2024-10-11 14:20:18,077 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} [2024-10-11 14:20:18,081 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-10-11 14:20:18,082 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 112 flow [2024-10-11 14:20:18,082 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) [2024-10-11 14:20:18,082 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:18,082 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 14:20:18,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:20:18,083 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)] === [2024-10-11 14:20:18,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:18,084 INFO L85 PathProgramCache]: Analyzing trace with hash -339911441, now seen corresponding path program 1 times [2024-10-11 14:20:18,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:18,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365364254] [2024-10-11 14:20:18,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:18,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:18,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:18,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:18,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365364254] [2024-10-11 14:20:18,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365364254] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:18,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:18,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:20:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879405977] [2024-10-11 14:20:18,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:18,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:20:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:18,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:20:18,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:20:18,349 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:18,349 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) [2024-10-11 14:20:18,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:18,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:18,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:18,612 INFO L124 PetriNetUnfolderBase]: 466/821 cut-off events. [2024-10-11 14:20:18,612 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-10-11 14:20:18,616 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. [2024-10-11 14:20:18,622 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 47 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-10-11 14:20:18,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 265 flow [2024-10-11 14:20:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-11 14:20:18,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-11 14:20:18,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-10-11 14:20:18,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-10-11 14:20:18,626 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 112 flow. Second operand 5 states and 109 transitions. [2024-10-11 14:20:18,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 265 flow [2024-10-11 14:20:18,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:20:18,631 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 126 flow [2024-10-11 14:20:18,632 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} [2024-10-11 14:20:18,633 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-10-11 14:20:18,633 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 126 flow [2024-10-11 14:20:18,633 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) [2024-10-11 14:20:18,633 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:18,634 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:20:18,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 14:20:18,635 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)] === [2024-10-11 14:20:18,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:18,636 INFO L85 PathProgramCache]: Analyzing trace with hash 80723095, now seen corresponding path program 1 times [2024-10-11 14:20:18,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:18,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988170366] [2024-10-11 14:20:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:18,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988170366] [2024-10-11 14:20:18,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988170366] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:18,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:20:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384790883] [2024-10-11 14:20:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:18,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:20:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:18,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:20:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:20:18,868 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:18,869 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) [2024-10-11 14:20:18,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:18,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:18,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:19,111 INFO L124 PetriNetUnfolderBase]: 562/1029 cut-off events. [2024-10-11 14:20:19,112 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-10-11 14:20:19,114 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. [2024-10-11 14:20:19,118 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 49 selfloop transitions, 10 changer transitions 4/67 dead transitions. [2024-10-11 14:20:19,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 306 flow [2024-10-11 14:20:19,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:20:19,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:20:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-10-11 14:20:19,121 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-10-11 14:20:19,121 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2024-10-11 14:20:19,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 306 flow [2024-10-11 14:20:19,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-11 14:20:19,126 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 150 flow [2024-10-11 14:20:19,126 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} [2024-10-11 14:20:19,127 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2024-10-11 14:20:19,127 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 150 flow [2024-10-11 14:20:19,128 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) [2024-10-11 14:20:19,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:19,128 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] [2024-10-11 14:20:19,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 14:20:19,128 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)] === [2024-10-11 14:20:19,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:19,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1652907070, now seen corresponding path program 1 times [2024-10-11 14:20:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59080375] [2024-10-11 14:20:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:19,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:19,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59080375] [2024-10-11 14:20:19,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59080375] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:19,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:19,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 14:20:19,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682867010] [2024-10-11 14:20:19,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:19,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 14:20:19,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:19,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 14:20:19,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 14:20:19,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-10-11 14:20:19,252 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) [2024-10-11 14:20:19,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-10-11 14:20:19,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:19,415 INFO L124 PetriNetUnfolderBase]: 225/408 cut-off events. [2024-10-11 14:20:19,415 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-10-11 14:20:19,416 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. [2024-10-11 14:20:19,418 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-10-11 14:20:19,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 278 flow [2024-10-11 14:20:19,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 14:20:19,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-11 14:20:19,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-10-11 14:20:19,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-10-11 14:20:19,420 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 150 flow. Second operand 4 states and 131 transitions. [2024-10-11 14:20:19,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 278 flow [2024-10-11 14:20:19,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-10-11 14:20:19,423 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 96 flow [2024-10-11 14:20:19,423 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} [2024-10-11 14:20:19,424 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2024-10-11 14:20:19,424 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 96 flow [2024-10-11 14:20:19,425 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) [2024-10-11 14:20:19,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:19,425 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] [2024-10-11 14:20:19,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:20:19,425 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)] === [2024-10-11 14:20:19,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:19,426 INFO L85 PathProgramCache]: Analyzing trace with hash -62179198, now seen corresponding path program 1 times [2024-10-11 14:20:19,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83857963] [2024-10-11 14:20:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:19,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:20,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:20,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83857963] [2024-10-11 14:20:20,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83857963] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:20,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:20,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:20:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906826247] [2024-10-11 14:20:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:20,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:20:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:20,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:20:20,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:20:20,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:20,022 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) [2024-10-11 14:20:20,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:20,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:20,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:20,509 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-10-11 14:20:20,510 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-10-11 14:20:20,512 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. [2024-10-11 14:20:20,516 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-10-11 14:20:20,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 113 transitions, 539 flow [2024-10-11 14:20:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:20:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:20:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-10-11 14:20:20,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283333333333333 [2024-10-11 14:20:20,520 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 96 flow. Second operand 10 states and 317 transitions. [2024-10-11 14:20:20,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 113 transitions, 539 flow [2024-10-11 14:20:20,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 113 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 14:20:20,525 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 272 flow [2024-10-11 14:20:20,526 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} [2024-10-11 14:20:20,526 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-10-11 14:20:20,527 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 272 flow [2024-10-11 14:20:20,527 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) [2024-10-11 14:20:20,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:20,527 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] [2024-10-11 14:20:20,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:20:20,528 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)] === [2024-10-11 14:20:20,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:20,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1900616770, now seen corresponding path program 2 times [2024-10-11 14:20:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:20,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473864537] [2024-10-11 14:20:20,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:20,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:21,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:21,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:21,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473864537] [2024-10-11 14:20:21,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473864537] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:21,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:21,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:20:21,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457587144] [2024-10-11 14:20:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:21,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:20:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:21,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:20:21,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:20:21,076 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:21,077 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) [2024-10-11 14:20:21,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:21,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:21,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:21,569 INFO L124 PetriNetUnfolderBase]: 537/964 cut-off events. [2024-10-11 14:20:21,570 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2024-10-11 14:20:21,573 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. [2024-10-11 14:20:21,578 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 79 selfloop transitions, 48 changer transitions 0/134 dead transitions. [2024-10-11 14:20:21,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 966 flow [2024-10-11 14:20:21,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 14:20:21,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-11 14:20:21,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 326 transitions. [2024-10-11 14:20:21,580 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-10-11 14:20:21,580 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 272 flow. Second operand 11 states and 326 transitions. [2024-10-11 14:20:21,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 966 flow [2024-10-11 14:20:21,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 14:20:21,587 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 638 flow [2024-10-11 14:20:21,587 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} [2024-10-11 14:20:21,588 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-10-11 14:20:21,588 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 638 flow [2024-10-11 14:20:21,588 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) [2024-10-11 14:20:21,588 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:21,589 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] [2024-10-11 14:20:21,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 14:20:21,589 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)] === [2024-10-11 14:20:21,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -426585704, now seen corresponding path program 3 times [2024-10-11 14:20:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419953421] [2024-10-11 14:20:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:21,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:22,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419953421] [2024-10-11 14:20:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419953421] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:22,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:22,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:20:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071994099] [2024-10-11 14:20:22,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:22,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:20:22,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:20:22,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:20:22,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:22,410 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) [2024-10-11 14:20:22,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:22,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:22,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:22,938 INFO L124 PetriNetUnfolderBase]: 630/1157 cut-off events. [2024-10-11 14:20:22,938 INFO L125 PetriNetUnfolderBase]: For 3454/3454 co-relation queries the response was YES. [2024-10-11 14:20:22,942 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. [2024-10-11 14:20:22,948 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 101 selfloop transitions, 52 changer transitions 0/155 dead transitions. [2024-10-11 14:20:22,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1417 flow [2024-10-11 14:20:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:20:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:20:22,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-10-11 14:20:22,950 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2861111111111111 [2024-10-11 14:20:22,951 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 638 flow. Second operand 12 states and 206 transitions. [2024-10-11 14:20:22,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1417 flow [2024-10-11 14:20:22,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 155 transitions, 1363 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-10-11 14:20:22,961 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 852 flow [2024-10-11 14:20:22,961 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} [2024-10-11 14:20:22,962 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-10-11 14:20:22,962 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 852 flow [2024-10-11 14:20:22,963 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) [2024-10-11 14:20:22,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:22,963 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] [2024-10-11 14:20:22,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 14:20:22,963 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)] === [2024-10-11 14:20:22,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash 58282096, now seen corresponding path program 4 times [2024-10-11 14:20:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526178690] [2024-10-11 14:20:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526178690] [2024-10-11 14:20:23,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526178690] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:23,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:23,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:20:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627666683] [2024-10-11 14:20:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:23,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:20:23,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:20:23,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:20:23,367 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:23,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 98 transitions, 852 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) [2024-10-11 14:20:23,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:23,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:23,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:23,852 INFO L124 PetriNetUnfolderBase]: 599/1114 cut-off events. [2024-10-11 14:20:23,852 INFO L125 PetriNetUnfolderBase]: For 4481/4481 co-relation queries the response was YES. [2024-10-11 14:20:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4669 conditions, 1114 events. 599/1114 cut-off events. For 4481/4481 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5534 event pairs, 84 based on Foata normal form. 8/1122 useless extension candidates. Maximal degree in co-relation 4619. Up to 616 conditions per place. [2024-10-11 14:20:23,863 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 74 selfloop transitions, 64 changer transitions 0/146 dead transitions. [2024-10-11 14:20:23,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 146 transitions, 1532 flow [2024-10-11 14:20:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 14:20:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 14:20:23,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 272 transitions. [2024-10-11 14:20:23,865 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-10-11 14:20:23,865 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 852 flow. Second operand 9 states and 272 transitions. [2024-10-11 14:20:23,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 146 transitions, 1532 flow [2024-10-11 14:20:23,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 146 transitions, 1460 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-10-11 14:20:23,885 INFO L231 Difference]: Finished difference. Result has 90 places, 121 transitions, 1291 flow [2024-10-11 14:20:23,887 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1291, PETRI_PLACES=90, PETRI_TRANSITIONS=121} [2024-10-11 14:20:23,888 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2024-10-11 14:20:23,890 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 121 transitions, 1291 flow [2024-10-11 14:20:23,890 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) [2024-10-11 14:20:23,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:23,890 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] [2024-10-11 14:20:23,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:20:23,894 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-11 14:20:23,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:23,895 INFO L85 PathProgramCache]: Analyzing trace with hash -437682702, now seen corresponding path program 5 times [2024-10-11 14:20:23,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:23,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830687830] [2024-10-11 14:20:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:23,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:24,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830687830] [2024-10-11 14:20:24,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830687830] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:24,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:24,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:20:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481231563] [2024-10-11 14:20:24,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:24,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:20:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:24,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:20:24,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:20:24,591 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:24,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 121 transitions, 1291 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) [2024-10-11 14:20:24,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:24,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:24,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:25,088 INFO L124 PetriNetUnfolderBase]: 599/1110 cut-off events. [2024-10-11 14:20:25,089 INFO L125 PetriNetUnfolderBase]: For 5746/5746 co-relation queries the response was YES. [2024-10-11 14:20:25,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5132 conditions, 1110 events. 599/1110 cut-off events. For 5746/5746 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5455 event pairs, 45 based on Foata normal form. 2/1112 useless extension candidates. Maximal degree in co-relation 5078. Up to 316 conditions per place. [2024-10-11 14:20:25,101 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 103 selfloop transitions, 64 changer transitions 0/168 dead transitions. [2024-10-11 14:20:25,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 168 transitions, 1972 flow [2024-10-11 14:20:25,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:20:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:20:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-10-11 14:20:25,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28055555555555556 [2024-10-11 14:20:25,103 INFO L175 Difference]: Start difference. First operand has 90 places, 121 transitions, 1291 flow. Second operand 12 states and 202 transitions. [2024-10-11 14:20:25,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 168 transitions, 1972 flow [2024-10-11 14:20:25,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 168 transitions, 1882 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-10-11 14:20:25,129 INFO L231 Difference]: Finished difference. Result has 98 places, 120 transitions, 1365 flow [2024-10-11 14:20:25,129 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1365, PETRI_PLACES=98, PETRI_TRANSITIONS=120} [2024-10-11 14:20:25,130 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-10-11 14:20:25,130 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 120 transitions, 1365 flow [2024-10-11 14:20:25,131 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) [2024-10-11 14:20:25,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:25,131 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] [2024-10-11 14:20:25,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 14:20:25,131 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)] === [2024-10-11 14:20:25,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash -17525711, now seen corresponding path program 1 times [2024-10-11 14:20:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:25,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082657405] [2024-10-11 14:20:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:25,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:26,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082657405] [2024-10-11 14:20:26,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082657405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:26,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:26,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 14:20:26,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186573254] [2024-10-11 14:20:26,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:26,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:20:26,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:20:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:20:26,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:26,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 120 transitions, 1365 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) [2024-10-11 14:20:26,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:26,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:26,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:27,524 INFO L124 PetriNetUnfolderBase]: 732/1353 cut-off events. [2024-10-11 14:20:27,524 INFO L125 PetriNetUnfolderBase]: For 7682/7682 co-relation queries the response was YES. [2024-10-11 14:20:27,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6429 conditions, 1353 events. 732/1353 cut-off events. For 7682/7682 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6967 event pairs, 135 based on Foata normal form. 1/1354 useless extension candidates. Maximal degree in co-relation 6240. Up to 781 conditions per place. [2024-10-11 14:20:27,536 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 125 selfloop transitions, 54 changer transitions 39/219 dead transitions. [2024-10-11 14:20:27,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 219 transitions, 2752 flow [2024-10-11 14:20:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:20:27,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:20:27,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2024-10-11 14:20:27,538 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2722222222222222 [2024-10-11 14:20:27,538 INFO L175 Difference]: Start difference. First operand has 98 places, 120 transitions, 1365 flow. Second operand 15 states and 245 transitions. [2024-10-11 14:20:27,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 219 transitions, 2752 flow [2024-10-11 14:20:27,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 219 transitions, 2610 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-10-11 14:20:27,575 INFO L231 Difference]: Finished difference. Result has 109 places, 141 transitions, 1699 flow [2024-10-11 14:20:27,576 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1699, PETRI_PLACES=109, PETRI_TRANSITIONS=141} [2024-10-11 14:20:27,576 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-10-11 14:20:27,576 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 141 transitions, 1699 flow [2024-10-11 14:20:27,576 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) [2024-10-11 14:20:27,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:27,577 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] [2024-10-11 14:20:27,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 14:20:27,577 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)] === [2024-10-11 14:20:27,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:27,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1926880621, now seen corresponding path program 2 times [2024-10-11 14:20:27,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:27,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705865528] [2024-10-11 14:20:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:28,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:28,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705865528] [2024-10-11 14:20:28,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705865528] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:28,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:28,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 14:20:28,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463785636] [2024-10-11 14:20:28,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:28,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:20:28,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:28,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:20:28,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:20:28,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:28,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 141 transitions, 1699 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) [2024-10-11 14:20:28,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:28,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:28,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:29,541 INFO L124 PetriNetUnfolderBase]: 691/1290 cut-off events. [2024-10-11 14:20:29,542 INFO L125 PetriNetUnfolderBase]: For 7568/7568 co-relation queries the response was YES. [2024-10-11 14:20:29,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 1290 events. 691/1290 cut-off events. For 7568/7568 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6639 event pairs, 135 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 6269. Up to 936 conditions per place. [2024-10-11 14:20:29,559 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 105 selfloop transitions, 54 changer transitions 47/207 dead transitions. [2024-10-11 14:20:29,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 207 transitions, 2667 flow [2024-10-11 14:20:29,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:20:29,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:20:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-10-11 14:20:29,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-10-11 14:20:29,561 INFO L175 Difference]: Start difference. First operand has 109 places, 141 transitions, 1699 flow. Second operand 14 states and 231 transitions. [2024-10-11 14:20:29,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 207 transitions, 2667 flow [2024-10-11 14:20:29,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 207 transitions, 2489 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-10-11 14:20:29,607 INFO L231 Difference]: Finished difference. Result has 117 places, 146 transitions, 1801 flow [2024-10-11 14:20:29,607 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=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1801, PETRI_PLACES=117, PETRI_TRANSITIONS=146} [2024-10-11 14:20:29,608 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-10-11 14:20:29,608 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 146 transitions, 1801 flow [2024-10-11 14:20:29,610 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) [2024-10-11 14:20:29,610 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:29,610 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] [2024-10-11 14:20:29,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 14:20:29,610 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)] === [2024-10-11 14:20:29,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash -835392765, now seen corresponding path program 3 times [2024-10-11 14:20:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754197097] [2024-10-11 14:20:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:29,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:30,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:30,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:30,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754197097] [2024-10-11 14:20:30,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754197097] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:30,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:30,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 14:20:30,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901102467] [2024-10-11 14:20:30,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:30,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:20:30,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:20:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:20:30,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:30,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 146 transitions, 1801 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) [2024-10-11 14:20:30,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:30,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:30,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:31,708 INFO L124 PetriNetUnfolderBase]: 758/1401 cut-off events. [2024-10-11 14:20:31,709 INFO L125 PetriNetUnfolderBase]: For 7471/7471 co-relation queries the response was YES. [2024-10-11 14:20:31,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6751 conditions, 1401 events. 758/1401 cut-off events. For 7471/7471 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7288 event pairs, 167 based on Foata normal form. 1/1402 useless extension candidates. Maximal degree in co-relation 6701. Up to 945 conditions per place. [2024-10-11 14:20:31,730 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 130 selfloop transitions, 56 changer transitions 39/226 dead transitions. [2024-10-11 14:20:31,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 226 transitions, 2954 flow [2024-10-11 14:20:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:20:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:20:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 248 transitions. [2024-10-11 14:20:31,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27555555555555555 [2024-10-11 14:20:31,732 INFO L175 Difference]: Start difference. First operand has 117 places, 146 transitions, 1801 flow. Second operand 15 states and 248 transitions. [2024-10-11 14:20:31,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 226 transitions, 2954 flow [2024-10-11 14:20:31,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 226 transitions, 2865 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-10-11 14:20:31,766 INFO L231 Difference]: Finished difference. Result has 120 places, 156 transitions, 2016 flow [2024-10-11 14:20:31,767 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2016, PETRI_PLACES=120, PETRI_TRANSITIONS=156} [2024-10-11 14:20:31,768 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-10-11 14:20:31,768 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 156 transitions, 2016 flow [2024-10-11 14:20:31,768 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) [2024-10-11 14:20:31,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:31,768 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] [2024-10-11 14:20:31,768 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 14:20:31,768 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)] === [2024-10-11 14:20:31,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1875303723, now seen corresponding path program 4 times [2024-10-11 14:20:31,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:31,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857914320] [2024-10-11 14:20:31,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:31,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:32,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857914320] [2024-10-11 14:20:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857914320] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 14:20:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484127391] [2024-10-11 14:20:32,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:32,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:20:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:20:32,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:20:32,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:32,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 156 transitions, 2016 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) [2024-10-11 14:20:32,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:32,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:32,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:33,615 INFO L124 PetriNetUnfolderBase]: 701/1312 cut-off events. [2024-10-11 14:20:33,615 INFO L125 PetriNetUnfolderBase]: For 7814/7814 co-relation queries the response was YES. [2024-10-11 14:20:33,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6476 conditions, 1312 events. 701/1312 cut-off events. For 7814/7814 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6894 event pairs, 173 based on Foata normal form. 1/1313 useless extension candidates. Maximal degree in co-relation 6426. Up to 919 conditions per place. [2024-10-11 14:20:33,634 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 126 selfloop transitions, 46 changer transitions 44/217 dead transitions. [2024-10-11 14:20:33,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 217 transitions, 2927 flow [2024-10-11 14:20:33,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:20:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:20:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 220 transitions. [2024-10-11 14:20:33,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28205128205128205 [2024-10-11 14:20:33,636 INFO L175 Difference]: Start difference. First operand has 120 places, 156 transitions, 2016 flow. Second operand 13 states and 220 transitions. [2024-10-11 14:20:33,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 217 transitions, 2927 flow [2024-10-11 14:20:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 217 transitions, 2870 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-10-11 14:20:33,677 INFO L231 Difference]: Finished difference. Result has 128 places, 148 transitions, 1999 flow [2024-10-11 14:20:33,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1999, PETRI_PLACES=128, PETRI_TRANSITIONS=148} [2024-10-11 14:20:33,678 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-10-11 14:20:33,678 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 148 transitions, 1999 flow [2024-10-11 14:20:33,679 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) [2024-10-11 14:20:33,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:33,679 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] [2024-10-11 14:20:33,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-11 14:20:33,679 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)] === [2024-10-11 14:20:33,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:33,680 INFO L85 PathProgramCache]: Analyzing trace with hash 455871811, now seen corresponding path program 5 times [2024-10-11 14:20:33,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:33,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095600160] [2024-10-11 14:20:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:33,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:33,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:34,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:34,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095600160] [2024-10-11 14:20:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095600160] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:34,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 14:20:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282085023] [2024-10-11 14:20:34,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:34,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:20:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:20:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:20:34,715 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:34,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 148 transitions, 1999 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) [2024-10-11 14:20:34,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:34,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:34,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:35,546 INFO L124 PetriNetUnfolderBase]: 611/1140 cut-off events. [2024-10-11 14:20:35,546 INFO L125 PetriNetUnfolderBase]: For 7699/7699 co-relation queries the response was YES. [2024-10-11 14:20:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5769 conditions, 1140 events. 611/1140 cut-off events. For 7699/7699 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5720 event pairs, 151 based on Foata normal form. 1/1141 useless extension candidates. Maximal degree in co-relation 5720. Up to 720 conditions per place. [2024-10-11 14:20:35,589 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 108 selfloop transitions, 41 changer transitions 57/207 dead transitions. [2024-10-11 14:20:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 207 transitions, 2862 flow [2024-10-11 14:20:35,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:20:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:20:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 230 transitions. [2024-10-11 14:20:35,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27380952380952384 [2024-10-11 14:20:35,595 INFO L175 Difference]: Start difference. First operand has 128 places, 148 transitions, 1999 flow. Second operand 14 states and 230 transitions. [2024-10-11 14:20:35,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 207 transitions, 2862 flow [2024-10-11 14:20:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 207 transitions, 2771 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-10-11 14:20:35,631 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1696 flow [2024-10-11 14:20:35,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1696, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-10-11 14:20:35,632 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 81 predicate places. [2024-10-11 14:20:35,632 INFO L471 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1696 flow [2024-10-11 14:20:35,633 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) [2024-10-11 14:20:35,634 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:35,634 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] [2024-10-11 14:20:35,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 14:20:35,634 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)] === [2024-10-11 14:20:35,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash -744916971, now seen corresponding path program 6 times [2024-10-11 14:20:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:35,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840108773] [2024-10-11 14:20:35,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:35,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840108773] [2024-10-11 14:20:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840108773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:36,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 14:20:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437397045] [2024-10-11 14:20:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:36,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:20:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:20:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:20:36,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:36,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1696 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) [2024-10-11 14:20:36,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:36,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:36,457 INFO L124 PetriNetUnfolderBase]: 416/793 cut-off events. [2024-10-11 14:20:36,457 INFO L125 PetriNetUnfolderBase]: For 5256/5256 co-relation queries the response was YES. [2024-10-11 14:20:36,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 793 events. 416/793 cut-off events. For 5256/5256 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3687 event pairs, 51 based on Foata normal form. 12/805 useless extension candidates. Maximal degree in co-relation 3937. Up to 368 conditions per place. [2024-10-11 14:20:36,466 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 87 selfloop transitions, 56 changer transitions 3/152 dead transitions. [2024-10-11 14:20:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 152 transitions, 1999 flow [2024-10-11 14:20:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 14:20:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-11 14:20:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 305 transitions. [2024-10-11 14:20:36,468 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-10-11 14:20:36,468 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1696 flow. Second operand 10 states and 305 transitions. [2024-10-11 14:20:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 152 transitions, 1999 flow [2024-10-11 14:20:36,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 152 transitions, 1851 flow, removed 37 selfloop flow, removed 15 redundant places. [2024-10-11 14:20:36,493 INFO L231 Difference]: Finished difference. Result has 123 places, 125 transitions, 1607 flow [2024-10-11 14:20:36,493 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1607, PETRI_PLACES=123, PETRI_TRANSITIONS=125} [2024-10-11 14:20:36,494 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-10-11 14:20:36,494 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 125 transitions, 1607 flow [2024-10-11 14:20:36,494 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) [2024-10-11 14:20:36,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:36,494 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] [2024-10-11 14:20:36,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 14:20:36,495 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)] === [2024-10-11 14:20:36,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 896429373, now seen corresponding path program 7 times [2024-10-11 14:20:36,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:36,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353160796] [2024-10-11 14:20:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:36,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:37,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:37,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353160796] [2024-10-11 14:20:37,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353160796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:37,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:37,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 14:20:37,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822647952] [2024-10-11 14:20:37,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:37,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:20:37,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:20:37,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:20:37,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:37,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 125 transitions, 1607 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) [2024-10-11 14:20:37,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:37,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:37,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:38,199 INFO L124 PetriNetUnfolderBase]: 446/847 cut-off events. [2024-10-11 14:20:38,199 INFO L125 PetriNetUnfolderBase]: For 5273/5273 co-relation queries the response was YES. [2024-10-11 14:20:38,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4181 conditions, 847 events. 446/847 cut-off events. For 5273/5273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3987 event pairs, 98 based on Foata normal form. 1/848 useless extension candidates. Maximal degree in co-relation 4089. Up to 557 conditions per place. [2024-10-11 14:20:38,210 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 87 selfloop transitions, 30 changer transitions 42/160 dead transitions. [2024-10-11 14:20:38,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 160 transitions, 2105 flow [2024-10-11 14:20:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:20:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:20:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-10-11 14:20:38,212 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26904761904761904 [2024-10-11 14:20:38,212 INFO L175 Difference]: Start difference. First operand has 123 places, 125 transitions, 1607 flow. Second operand 14 states and 226 transitions. [2024-10-11 14:20:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 160 transitions, 2105 flow [2024-10-11 14:20:38,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 160 transitions, 1999 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-11 14:20:38,236 INFO L231 Difference]: Finished difference. Result has 133 places, 102 transitions, 1194 flow [2024-10-11 14:20:38,237 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1194, PETRI_PLACES=133, PETRI_TRANSITIONS=102} [2024-10-11 14:20:38,237 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-10-11 14:20:38,238 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 102 transitions, 1194 flow [2024-10-11 14:20:38,238 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) [2024-10-11 14:20:38,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:38,238 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] [2024-10-11 14:20:38,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 14:20:38,239 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)] === [2024-10-11 14:20:38,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:38,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1587127583, now seen corresponding path program 8 times [2024-10-11 14:20:38,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:38,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026960502] [2024-10-11 14:20:38,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:38,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:38,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026960502] [2024-10-11 14:20:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026960502] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:38,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:38,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:20:38,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222170081] [2024-10-11 14:20:38,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:38,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:20:38,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:38,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:20:38,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:20:38,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:38,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 102 transitions, 1194 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:20:38,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:38,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:38,995 INFO L124 PetriNetUnfolderBase]: 333/634 cut-off events. [2024-10-11 14:20:38,995 INFO L125 PetriNetUnfolderBase]: For 3889/3889 co-relation queries the response was YES. [2024-10-11 14:20:38,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 634 events. 333/634 cut-off events. For 3889/3889 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2769 event pairs, 26 based on Foata normal form. 10/644 useless extension candidates. Maximal degree in co-relation 3061. Up to 266 conditions per place. [2024-10-11 14:20:39,000 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 73 selfloop transitions, 54 changer transitions 3/136 dead transitions. [2024-10-11 14:20:39,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 136 transitions, 1718 flow [2024-10-11 14:20:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:20:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:20:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 337 transitions. [2024-10-11 14:20:39,001 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46805555555555556 [2024-10-11 14:20:39,001 INFO L175 Difference]: Start difference. First operand has 133 places, 102 transitions, 1194 flow. Second operand 12 states and 337 transitions. [2024-10-11 14:20:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 136 transitions, 1718 flow [2024-10-11 14:20:39,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 136 transitions, 1501 flow, removed 44 selfloop flow, removed 22 redundant places. [2024-10-11 14:20:39,014 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 1218 flow [2024-10-11 14:20:39,015 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1218, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2024-10-11 14:20:39,015 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 54 predicate places. [2024-10-11 14:20:39,015 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 1218 flow [2024-10-11 14:20:39,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:20:39,016 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:39,016 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] [2024-10-11 14:20:39,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 14:20:39,016 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)] === [2024-10-11 14:20:39,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1662817645, now seen corresponding path program 9 times [2024-10-11 14:20:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772304073] [2024-10-11 14:20:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:39,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:39,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:39,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772304073] [2024-10-11 14:20:39,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772304073] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:39,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:39,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-11 14:20:39,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161082026] [2024-10-11 14:20:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:39,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 14:20:39,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 14:20:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-10-11 14:20:40,017 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:40,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 1218 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) [2024-10-11 14:20:40,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:40,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:40,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:40,847 INFO L124 PetriNetUnfolderBase]: 406/777 cut-off events. [2024-10-11 14:20:40,847 INFO L125 PetriNetUnfolderBase]: For 3797/3797 co-relation queries the response was YES. [2024-10-11 14:20:40,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 777 events. 406/777 cut-off events. For 3797/3797 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3590 event pairs, 94 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 3465. Up to 461 conditions per place. [2024-10-11 14:20:40,854 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 78 selfloop transitions, 27 changer transitions 58/164 dead transitions. [2024-10-11 14:20:40,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 164 transitions, 2004 flow [2024-10-11 14:20:40,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 14:20:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-10-11 14:20:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 232 transitions. [2024-10-11 14:20:40,856 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2577777777777778 [2024-10-11 14:20:40,856 INFO L175 Difference]: Start difference. First operand has 107 places, 107 transitions, 1218 flow. Second operand 15 states and 232 transitions. [2024-10-11 14:20:40,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 164 transitions, 2004 flow [2024-10-11 14:20:40,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 164 transitions, 1753 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-10-11 14:20:40,872 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 928 flow [2024-10-11 14:20:40,873 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=928, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-10-11 14:20:40,873 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-10-11 14:20:40,873 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 928 flow [2024-10-11 14:20:40,874 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) [2024-10-11 14:20:40,874 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:40,874 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] [2024-10-11 14:20:40,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 14:20:40,875 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)] === [2024-10-11 14:20:40,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1361196891, now seen corresponding path program 10 times [2024-10-11 14:20:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148030171] [2024-10-11 14:20:40,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:40,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:41,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148030171] [2024-10-11 14:20:41,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148030171] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:41,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:41,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-11 14:20:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379360856] [2024-10-11 14:20:41,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:41,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 14:20:41,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:41,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 14:20:41,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 14:20:41,236 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-10-11 14:20:41,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 928 flow. Second operand has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:20:41,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:41,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-10-11 14:20:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:41,554 INFO L124 PetriNetUnfolderBase]: 238/495 cut-off events. [2024-10-11 14:20:41,555 INFO L125 PetriNetUnfolderBase]: For 1623/1623 co-relation queries the response was YES. [2024-10-11 14:20:41,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 495 events. 238/495 cut-off events. For 1623/1623 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2095 event pairs, 12 based on Foata normal form. 12/507 useless extension candidates. Maximal degree in co-relation 1991. Up to 109 conditions per place. [2024-10-11 14:20:41,558 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 68 selfloop transitions, 47 changer transitions 1/122 dead transitions. [2024-10-11 14:20:41,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 122 transitions, 1215 flow [2024-10-11 14:20:41,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:20:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:20:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 348 transitions. [2024-10-11 14:20:41,559 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-10-11 14:20:41,559 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 928 flow. Second operand 12 states and 348 transitions. [2024-10-11 14:20:41,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 122 transitions, 1215 flow [2024-10-11 14:20:41,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 122 transitions, 1135 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-10-11 14:20:41,569 INFO L231 Difference]: Finished difference. Result has 108 places, 96 transitions, 985 flow [2024-10-11 14:20:41,569 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=985, PETRI_PLACES=108, PETRI_TRANSITIONS=96} [2024-10-11 14:20:41,570 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-10-11 14:20:41,570 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 985 flow [2024-10-11 14:20:41,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.25) internal successors, (202), 8 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:20:41,570 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:41,571 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] [2024-10-11 14:20:41,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 14:20:41,571 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)] === [2024-10-11 14:20:41,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:41,572 INFO L85 PathProgramCache]: Analyzing trace with hash 293806189, now seen corresponding path program 11 times [2024-10-11 14:20:41,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:41,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876820012] [2024-10-11 14:20:41,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:41,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:42,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:42,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876820012] [2024-10-11 14:20:42,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876820012] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:42,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:42,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 14:20:42,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389275381] [2024-10-11 14:20:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:42,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:20:42,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:42,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:20:42,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:20:42,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:42,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 985 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) [2024-10-11 14:20:42,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:42,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:42,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:43,061 INFO L124 PetriNetUnfolderBase]: 237/492 cut-off events. [2024-10-11 14:20:43,062 INFO L125 PetriNetUnfolderBase]: For 2176/2176 co-relation queries the response was YES. [2024-10-11 14:20:43,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2189 conditions, 492 events. 237/492 cut-off events. For 2176/2176 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2010 event pairs, 52 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 2032. Up to 258 conditions per place. [2024-10-11 14:20:43,065 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 62 selfloop transitions, 21 changer transitions 44/128 dead transitions. [2024-10-11 14:20:43,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 1420 flow [2024-10-11 14:20:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 14:20:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-11 14:20:43,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 215 transitions. [2024-10-11 14:20:43,067 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25595238095238093 [2024-10-11 14:20:43,067 INFO L175 Difference]: Start difference. First operand has 108 places, 96 transitions, 985 flow. Second operand 14 states and 215 transitions. [2024-10-11 14:20:43,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 1420 flow [2024-10-11 14:20:43,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 128 transitions, 1371 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 14:20:43,078 INFO L231 Difference]: Finished difference. Result has 116 places, 71 transitions, 707 flow [2024-10-11 14:20:43,078 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=707, PETRI_PLACES=116, PETRI_TRANSITIONS=71} [2024-10-11 14:20:43,079 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 63 predicate places. [2024-10-11 14:20:43,079 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 71 transitions, 707 flow [2024-10-11 14:20:43,079 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) [2024-10-11 14:20:43,079 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:43,079 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] [2024-10-11 14:20:43,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-11 14:20:43,080 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)] === [2024-10-11 14:20:43,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:43,080 INFO L85 PathProgramCache]: Analyzing trace with hash 2089402495, now seen corresponding path program 12 times [2024-10-11 14:20:43,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:43,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583123216] [2024-10-11 14:20:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:43,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:43,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583123216] [2024-10-11 14:20:43,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583123216] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:43,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:43,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 14:20:43,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803507077] [2024-10-11 14:20:43,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:43,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:20:43,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:43,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:20:43,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:20:43,968 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:43,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 71 transitions, 707 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) [2024-10-11 14:20:43,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:43,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:43,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:44,550 INFO L124 PetriNetUnfolderBase]: 163/344 cut-off events. [2024-10-11 14:20:44,550 INFO L125 PetriNetUnfolderBase]: For 1640/1640 co-relation queries the response was YES. [2024-10-11 14:20:44,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1548 conditions, 344 events. 163/344 cut-off events. For 1640/1640 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1257 event pairs, 29 based on Foata normal form. 1/345 useless extension candidates. Maximal degree in co-relation 1516. Up to 116 conditions per place. [2024-10-11 14:20:44,553 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 45 selfloop transitions, 16 changer transitions 38/100 dead transitions. [2024-10-11 14:20:44,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 100 transitions, 1040 flow [2024-10-11 14:20:44,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-10-11 14:20:44,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-10-11 14:20:44,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 236 transitions. [2024-10-11 14:20:44,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.24583333333333332 [2024-10-11 14:20:44,554 INFO L175 Difference]: Start difference. First operand has 116 places, 71 transitions, 707 flow. Second operand 16 states and 236 transitions. [2024-10-11 14:20:44,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 100 transitions, 1040 flow [2024-10-11 14:20:44,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 100 transitions, 868 flow, removed 7 selfloop flow, removed 33 redundant places. [2024-10-11 14:20:44,562 INFO L231 Difference]: Finished difference. Result has 94 places, 53 transitions, 399 flow [2024-10-11 14:20:44,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=399, PETRI_PLACES=94, PETRI_TRANSITIONS=53} [2024-10-11 14:20:44,563 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 41 predicate places. [2024-10-11 14:20:44,563 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 53 transitions, 399 flow [2024-10-11 14:20:44,564 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) [2024-10-11 14:20:44,564 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:20:44,564 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] [2024-10-11 14:20:44,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 14:20:44,564 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-10-11 14:20:44,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:20:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash 262307921, now seen corresponding path program 13 times [2024-10-11 14:20:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:20:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181014215] [2024-10-11 14:20:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:20:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:20:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:20:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:20:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:20:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181014215] [2024-10-11 14:20:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181014215] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:20:45,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:20:45,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 14:20:45,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63271253] [2024-10-11 14:20:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:20:45,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:20:45,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:20:45,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:20:45,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:20:45,513 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-10-11 14:20:45,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 53 transitions, 399 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) [2024-10-11 14:20:45,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:20:45,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-10-11 14:20:45,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:20:45,898 INFO L124 PetriNetUnfolderBase]: 104/219 cut-off events. [2024-10-11 14:20:45,899 INFO L125 PetriNetUnfolderBase]: For 675/675 co-relation queries the response was YES. [2024-10-11 14:20:45,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 916 conditions, 219 events. 104/219 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 670 event pairs, 10 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 899. Up to 84 conditions per place. [2024-10-11 14:20:45,900 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2024-10-11 14:20:45,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 65 transitions, 553 flow [2024-10-11 14:20:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 14:20:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-10-11 14:20:45,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 182 transitions. [2024-10-11 14:20:45,901 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23333333333333334 [2024-10-11 14:20:45,901 INFO L175 Difference]: Start difference. First operand has 94 places, 53 transitions, 399 flow. Second operand 13 states and 182 transitions. [2024-10-11 14:20:45,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 65 transitions, 553 flow [2024-10-11 14:20:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 65 transitions, 439 flow, removed 7 selfloop flow, removed 21 redundant places. [2024-10-11 14:20:45,904 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2024-10-11 14:20:45,904 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=62, 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=74, PETRI_TRANSITIONS=0} [2024-10-11 14:20:45,905 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 21 predicate places. [2024-10-11 14:20:45,905 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2024-10-11 14:20:45,905 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) [2024-10-11 14:20:45,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-10-11 14:20:45,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-10-11 14:20:45,911 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-10-11 14:20:45,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-10-11 14:20:45,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-10-11 14:20:45,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-10-11 14:20:45,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-10-11 14:20:45,912 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-10-11 14:20:45,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-10-11 14:20:45,912 INFO L407 BasicCegarLoop]: Path program histogram: [13, 5, 1, 1, 1, 1] [2024-10-11 14:20:45,917 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-11 14:20:45,917 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-11 14:20:45,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:20:45 BasicIcfg [2024-10-11 14:20:45,925 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-11 14:20:45,925 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-11 14:20:45,925 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-11 14:20:45,925 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-11 14:20:45,926 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:20:16" (3/4) ... [2024-10-11 14:20:45,928 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-11 14:20:45,932 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-10-11 14:20:45,942 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 81 nodes and edges [2024-10-11 14:20:45,943 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-10-11 14:20:45,943 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-10-11 14:20:45,944 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-11 14:20:46,044 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-11 14:20:46,047 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-11 14:20:46,047 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-11 14:20:46,047 INFO L158 Benchmark]: Toolchain (without parser) took 31000.21ms. Allocated memory was 146.8MB in the beginning and 717.2MB in the end (delta: 570.4MB). Free memory was 86.6MB in the beginning and 617.0MB in the end (delta: -530.5MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,048 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-11 14:20:46,048 INFO L158 Benchmark]: CACSL2BoogieTranslator took 716.34ms. Allocated memory is still 146.8MB. Free memory was 86.3MB in the beginning and 102.1MB in the end (delta: -15.8MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,048 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.92ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 99.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,048 INFO L158 Benchmark]: Boogie Preprocessor took 76.94ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 95.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,048 INFO L158 Benchmark]: RCFGBuilder took 921.58ms. Allocated memory is still 146.8MB. Free memory was 95.3MB in the beginning and 107.1MB in the end (delta: -11.8MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,049 INFO L158 Benchmark]: TraceAbstraction took 29078.34ms. Allocated memory was 146.8MB in the beginning and 717.2MB in the end (delta: 570.4MB). Free memory was 107.1MB in the beginning and 622.3MB in the end (delta: -515.2MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,049 INFO L158 Benchmark]: Witness Printer took 121.63ms. Allocated memory is still 717.2MB. Free memory was 622.3MB in the beginning and 617.0MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-11 14:20:46,052 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory was 51.1MB in the beginning and 51.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 716.34ms. Allocated memory is still 146.8MB. Free memory was 86.3MB in the beginning and 102.1MB in the end (delta: -15.8MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.92ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 99.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.94ms. Allocated memory is still 146.8MB. Free memory was 99.5MB in the beginning and 95.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 921.58ms. Allocated memory is still 146.8MB. Free memory was 95.3MB in the beginning and 107.1MB in the end (delta: -11.8MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * TraceAbstraction took 29078.34ms. Allocated memory was 146.8MB in the beginning and 717.2MB in the end (delta: 570.4MB). Free memory was 107.1MB in the beginning and 622.3MB in the end (delta: -515.2MB). Peak memory consumption was 57.7MB. Max. memory is 16.1GB. * Witness Printer took 121.63ms. Allocated memory is still 717.2MB. Free memory was 622.3MB in the beginning and 617.0MB in the end (delta: 5.2MB). 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: 29.0s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2067 SdHoareTripleChecker+Valid, 6.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1924 mSDsluCounter, 2446 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2327 mSDsCounter, 228 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7793 IncrementalHoareTripleChecker+Invalid, 8021 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 228 mSolverCounterUnsat, 119 mSDtfsCounter, 7793 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 340 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 566 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2016occurred in iteration=12, InterpolantAutomatonStates: 247, 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, 14.4s InterpolantComputationTime, 593 NumberOfCodeBlocks, 593 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 571 ConstructedInterpolants, 0 QuantifiedInterpolants, 5863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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! [2024-10-11 14:20:46,084 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE