./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:37:31,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:37:31,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:37:31,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:37:31,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:37:31,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:37:31,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:37:31,814 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:37:31,814 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:37:31,815 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:37:31,815 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:37:31,816 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:37:31,816 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:37:31,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:37:31,817 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:37:31,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:37:31,818 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:37:31,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:37:31,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:37:31,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:37:31,818 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:37:31,819 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:37:31,819 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:37:31,819 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:37:31,820 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:37:31,820 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:37:31,820 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:37:31,820 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:37:31,820 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:37:31,821 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:37:31,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:37:31,822 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:37:31,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:37:31,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:37:31,823 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:37:31,823 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:37:31,823 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:37:31,823 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edceb7bcc6473f68e1454dc7ab02ec33e8dca99fdd725419b9e71852c466530e [2024-11-22 13:37:32,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:37:32,050 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:37:32,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:37:32,053 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:37:32,054 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:37:32,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-22 13:37:33,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:37:33,571 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:37:33,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2024-11-22 13:37:33,608 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68462e55c/de9c24659b7a40b3bc7a9b4153c5e02b/FLAGc6fcf61a0 [2024-11-22 13:37:33,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68462e55c/de9c24659b7a40b3bc7a9b4153c5e02b [2024-11-22 13:37:33,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:37:33,887 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:37:33,889 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:37:33,889 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:37:33,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:37:33,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:33" (1/1) ... [2024-11-22 13:37:33,894 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@718ea900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:33, skipping insertion in model container [2024-11-22 13:37:33,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:37:33" (1/1) ... [2024-11-22 13:37:33,952 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:37:34,251 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-11-22 13:37:34,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:37:34,293 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:37:34,366 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[186203,186216] [2024-11-22 13:37:34,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:37:34,423 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:37:34,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34 WrapperNode [2024-11-22 13:37:34,424 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:37:34,425 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:37:34,425 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:37:34,425 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:37:34,431 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,472 INFO L138 Inliner]: procedures = 246, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 126 [2024-11-22 13:37:34,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:37:34,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:37:34,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:37:34,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:37:34,481 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,485 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,497 INFO L175 MemorySlicer]: Split 17 memory accesses to 3 slices as follows [2, 2, 13]. 76 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 8 writes are split as follows [0, 2, 6]. [2024-11-22 13:37:34,498 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,498 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,507 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,509 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,514 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:37:34,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:37:34,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:37:34,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:37:34,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (1/1) ... [2024-11-22 13:37:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:37:34,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:37:34,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:37:34,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:37:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2024-11-22 13:37:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2024-11-22 13:37:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 13:37:34,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 13:37:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-22 13:37:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:37:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:37:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:37:34,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:37:34,608 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:37:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:37:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:37:34,610 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-22 13:37:34,817 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:37:34,819 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:37:35,003 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-22 13:37:35,003 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:37:35,095 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:37:35,096 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-22 13:37:35,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:35 BoogieIcfgContainer [2024-11-22 13:37:35,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:37:35,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:37:35,101 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:37:35,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:37:35,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:37:33" (1/3) ... [2024-11-22 13:37:35,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea4c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:35, skipping insertion in model container [2024-11-22 13:37:35,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:37:34" (2/3) ... [2024-11-22 13:37:35,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea4c9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:37:35, skipping insertion in model container [2024-11-22 13:37:35,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:35" (3/3) ... [2024-11-22 13:37:35,107 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2024-11-22 13:37:35,119 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:37:35,120 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-11-22 13:37:35,120 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-22 13:37:35,162 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-22 13:37:35,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 60 transitions, 134 flow [2024-11-22 13:37:35,223 INFO L124 PetriNetUnfolderBase]: 10/73 cut-off events. [2024-11-22 13:37:35,223 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-22 13:37:35,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 73 events. 10/73 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 136 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 39. Up to 4 conditions per place. [2024-11-22 13:37:35,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 60 transitions, 134 flow [2024-11-22 13:37:35,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 53 transitions, 118 flow [2024-11-22 13:37:35,239 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:37:35,244 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;@11cb931e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:37:35,245 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-22 13:37:35,248 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-22 13:37:35,248 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2024-11-22 13:37:35,249 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-22 13:37:35,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:35,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-22 13:37:35,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:35,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 13054026, now seen corresponding path program 1 times [2024-11-22 13:37:35,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:35,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293026182] [2024-11-22 13:37:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:35,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293026182] [2024-11-22 13:37:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293026182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:37:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883250065] [2024-11-22 13:37:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:35,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:37:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:35,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:37:35,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:37:35,801 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:35,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:35,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:35,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:35,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:36,004 INFO L124 PetriNetUnfolderBase]: 466/835 cut-off events. [2024-11-22 13:37:36,004 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-22 13:37:36,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 835 events. 466/835 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3555 event pairs, 345 based on Foata normal form. 3/834 useless extension candidates. Maximal degree in co-relation 1550. Up to 602 conditions per place. [2024-11-22 13:37:36,013 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 39 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-11-22 13:37:36,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 218 flow [2024-11-22 13:37:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:37:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-22 13:37:36,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-11-22 13:37:36,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-11-22 13:37:36,027 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 118 flow. Second operand 3 states and 84 transitions. [2024-11-22 13:37:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 218 flow [2024-11-22 13:37:36,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 54 transitions, 210 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-22 13:37:36,036 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 112 flow [2024-11-22 13:37:36,038 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-11-22 13:37:36,042 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -6 predicate places. [2024-11-22 13:37:36,042 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 112 flow [2024-11-22 13:37:36,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:36,043 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 13:37:36,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 13:37:36,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:36,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash -339911441, now seen corresponding path program 1 times [2024-11-22 13:37:36,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:36,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793393117] [2024-11-22 13:37:36,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:36,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:36,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:36,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:36,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793393117] [2024-11-22 13:37:36,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793393117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:36,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:36,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:37:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723376495] [2024-11-22 13:37:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:36,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:37:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:37:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:37:36,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:36,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:36,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:36,405 INFO L124 PetriNetUnfolderBase]: 466/821 cut-off events. [2024-11-22 13:37:36,406 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-11-22 13:37:36,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1712 conditions, 821 events. 466/821 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3485 event pairs, 155 based on Foata normal form. 1/821 useless extension candidates. Maximal degree in co-relation 818. Up to 553 conditions per place. [2024-11-22 13:37:36,413 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 47 selfloop transitions, 11 changer transitions 0/62 dead transitions. [2024-11-22 13:37:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 265 flow [2024-11-22 13:37:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:37:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-22 13:37:36,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-11-22 13:37:36,416 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.36333333333333334 [2024-11-22 13:37:36,417 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 112 flow. Second operand 5 states and 109 transitions. [2024-11-22 13:37:36,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 265 flow [2024-11-22 13:37:36,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 62 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:37:36,421 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 126 flow [2024-11-22 13:37:36,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-22 13:37:36,422 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-11-22 13:37:36,423 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 126 flow [2024-11-22 13:37:36,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:36,423 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:36,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:37:36,423 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:36,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:36,424 INFO L85 PathProgramCache]: Analyzing trace with hash 80723095, now seen corresponding path program 1 times [2024-11-22 13:37:36,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:36,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391889152] [2024-11-22 13:37:36,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:36,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:36,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391889152] [2024-11-22 13:37:36,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391889152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:36,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:36,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:37:36,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326488946] [2024-11-22 13:37:36,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:36,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:37:36,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:36,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:37:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:37:36,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:36,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:36,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:36,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:36,811 INFO L124 PetriNetUnfolderBase]: 562/1029 cut-off events. [2024-11-22 13:37:36,812 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-11-22 13:37:36,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2319 conditions, 1029 events. 562/1029 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4890 event pairs, 252 based on Foata normal form. 64/1092 useless extension candidates. Maximal degree in co-relation 228. Up to 545 conditions per place. [2024-11-22 13:37:36,817 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 49 selfloop transitions, 10 changer transitions 4/67 dead transitions. [2024-11-22 13:37:36,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 67 transitions, 306 flow [2024-11-22 13:37:36,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:37:36,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:37:36,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-22 13:37:36,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-11-22 13:37:36,819 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 126 flow. Second operand 4 states and 102 transitions. [2024-11-22 13:37:36,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 67 transitions, 306 flow [2024-11-22 13:37:36,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 67 transitions, 286 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-22 13:37:36,821 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 150 flow [2024-11-22 13:37:36,822 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-11-22 13:37:36,823 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -3 predicate places. [2024-11-22 13:37:36,823 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 150 flow [2024-11-22 13:37:36,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:36,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:36,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:37:36,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:36,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1652907070, now seen corresponding path program 1 times [2024-11-22 13:37:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455410251] [2024-11-22 13:37:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:36,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:36,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:36,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455410251] [2024-11-22 13:37:36,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455410251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:36,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:36,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:37:36,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342788408] [2024-11-22 13:37:36,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:36,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:37:36,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:36,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:37:36,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:37:36,924 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 60 [2024-11-22 13:37:36,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:36,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:36,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 60 [2024-11-22 13:37:36,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:37,062 INFO L124 PetriNetUnfolderBase]: 225/408 cut-off events. [2024-11-22 13:37:37,063 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2024-11-22 13:37:37,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 408 events. 225/408 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1435 event pairs, 46 based on Foata normal form. 0/408 useless extension candidates. Maximal degree in co-relation 927. Up to 217 conditions per place. [2024-11-22 13:37:37,066 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-11-22 13:37:37,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 278 flow [2024-11-22 13:37:37,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:37:37,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-22 13:37:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-22 13:37:37,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5458333333333333 [2024-11-22 13:37:37,069 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 150 flow. Second operand 4 states and 131 transitions. [2024-11-22 13:37:37,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 278 flow [2024-11-22 13:37:37,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 248 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-11-22 13:37:37,073 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 96 flow [2024-11-22 13:37:37,074 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-11-22 13:37:37,075 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -12 predicate places. [2024-11-22 13:37:37,075 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 96 flow [2024-11-22 13:37:37,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:37,075 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:37,075 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:37,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:37:37,076 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:37,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash -62179198, now seen corresponding path program 1 times [2024-11-22 13:37:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155345639] [2024-11-22 13:37:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:37,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:37,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155345639] [2024-11-22 13:37:37,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155345639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:37,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:37,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:37:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217878288] [2024-11-22 13:37:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:37,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:37:37,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:37,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:37:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:37:37,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-22 13:37:37,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 96 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:37,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:37,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-22 13:37:37,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:37,913 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-11-22 13:37:37,914 INFO L125 PetriNetUnfolderBase]: For 304/304 co-relation queries the response was YES. [2024-11-22 13:37:37,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2098 conditions, 862 events. 483/862 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3897 event pairs, 64 based on Foata normal form. 8/868 useless extension candidates. Maximal degree in co-relation 366. Up to 223 conditions per place. [2024-11-22 13:37:37,918 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 83 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-11-22 13:37:37,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 113 transitions, 539 flow [2024-11-22 13:37:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:37:37,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:37:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-11-22 13:37:37,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5283333333333333 [2024-11-22 13:37:37,919 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 96 flow. Second operand 10 states and 317 transitions. [2024-11-22 13:37:37,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 113 transitions, 539 flow [2024-11-22 13:37:37,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 113 transitions, 519 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-22 13:37:37,922 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 272 flow [2024-11-22 13:37:37,922 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-22 13:37:37,922 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-11-22 13:37:37,923 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 272 flow [2024-11-22 13:37:37,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:37,923 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:37,923 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:37,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:37:37,923 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:37,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:37,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1900616770, now seen corresponding path program 2 times [2024-11-22 13:37:37,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:37,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277828505] [2024-11-22 13:37:37,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:37:37,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:37,955 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:37,955 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:38,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:38,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277828505] [2024-11-22 13:37:38,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277828505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:38,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:38,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:37:38,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476719039] [2024-11-22 13:37:38,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:38,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:37:38,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:38,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:37:38,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:37:38,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-22 13:37:38,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:38,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:38,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-22 13:37:38,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:38,600 INFO L124 PetriNetUnfolderBase]: 537/964 cut-off events. [2024-11-22 13:37:38,600 INFO L125 PetriNetUnfolderBase]: For 1460/1460 co-relation queries the response was YES. [2024-11-22 13:37:38,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 964 events. 537/964 cut-off events. For 1460/1460 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4456 event pairs, 30 based on Foata normal form. 8/970 useless extension candidates. Maximal degree in co-relation 1740. Up to 330 conditions per place. [2024-11-22 13:37:38,606 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 79 selfloop transitions, 48 changer transitions 0/134 dead transitions. [2024-11-22 13:37:38,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 134 transitions, 966 flow [2024-11-22 13:37:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:37:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-22 13:37:38,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 326 transitions. [2024-11-22 13:37:38,607 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-22 13:37:38,608 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 272 flow. Second operand 11 states and 326 transitions. [2024-11-22 13:37:38,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 134 transitions, 966 flow [2024-11-22 13:37:38,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 134 transitions, 952 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-22 13:37:38,614 INFO L231 Difference]: Finished difference. Result has 69 places, 86 transitions, 638 flow [2024-11-22 13:37:38,614 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=638, PETRI_PLACES=69, PETRI_TRANSITIONS=86} [2024-11-22 13:37:38,615 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-11-22 13:37:38,616 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 86 transitions, 638 flow [2024-11-22 13:37:38,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 7 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:38,616 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:38,616 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:38,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:37:38,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:38,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash -426585704, now seen corresponding path program 3 times [2024-11-22 13:37:38,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:38,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487549625] [2024-11-22 13:37:38,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:37:38,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:38,648 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:37:38,652 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:39,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:39,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487549625] [2024-11-22 13:37:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487549625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:39,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:37:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170683754] [2024-11-22 13:37:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:39,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:37:39,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:37:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:37:39,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:39,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 86 transitions, 638 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:39,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:39,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:39,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:39,516 INFO L124 PetriNetUnfolderBase]: 630/1157 cut-off events. [2024-11-22 13:37:39,517 INFO L125 PetriNetUnfolderBase]: For 3454/3454 co-relation queries the response was YES. [2024-11-22 13:37:39,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1157 events. 630/1157 cut-off events. For 3454/3454 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5696 event pairs, 18 based on Foata normal form. 0/1155 useless extension candidates. Maximal degree in co-relation 2433. Up to 338 conditions per place. [2024-11-22 13:37:39,524 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 101 selfloop transitions, 52 changer transitions 0/155 dead transitions. [2024-11-22 13:37:39,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 155 transitions, 1417 flow [2024-11-22 13:37:39,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:37:39,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:37:39,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-11-22 13:37:39,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2861111111111111 [2024-11-22 13:37:39,526 INFO L175 Difference]: Start difference. First operand has 69 places, 86 transitions, 638 flow. Second operand 12 states and 206 transitions. [2024-11-22 13:37:39,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 155 transitions, 1417 flow [2024-11-22 13:37:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 155 transitions, 1363 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-11-22 13:37:39,535 INFO L231 Difference]: Finished difference. Result has 81 places, 98 transitions, 852 flow [2024-11-22 13:37:39,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=852, PETRI_PLACES=81, PETRI_TRANSITIONS=98} [2024-11-22 13:37:39,537 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-11-22 13:37:39,537 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 98 transitions, 852 flow [2024-11-22 13:37:39,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:39,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:39,538 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:39,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:37:39,538 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:39,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:39,539 INFO L85 PathProgramCache]: Analyzing trace with hash 58282096, now seen corresponding path program 4 times [2024-11-22 13:37:39,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:39,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393743682] [2024-11-22 13:37:39,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:37:39,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:39,576 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:37:39,576 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:39,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393743682] [2024-11-22 13:37:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393743682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:39,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:39,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 13:37:39,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999943239] [2024-11-22 13:37:39,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:39,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 13:37:39,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 13:37:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:37:39,904 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:39,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 98 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:39,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:39,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:39,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:40,280 INFO L124 PetriNetUnfolderBase]: 630/1153 cut-off events. [2024-11-22 13:37:40,281 INFO L125 PetriNetUnfolderBase]: For 4524/4524 co-relation queries the response was YES. [2024-11-22 13:37:40,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4874 conditions, 1153 events. 630/1153 cut-off events. For 4524/4524 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5654 event pairs, 48 based on Foata normal form. 2/1155 useless extension candidates. Maximal degree in co-relation 4826. Up to 332 conditions per place. [2024-11-22 13:37:40,288 INFO L140 encePairwiseOnDemand]: 47/60 looper letters, 91 selfloop transitions, 52 changer transitions 0/144 dead transitions. [2024-11-22 13:37:40,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 144 transitions, 1441 flow [2024-11-22 13:37:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:37:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:37:40,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-11-22 13:37:40,292 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.28055555555555556 [2024-11-22 13:37:40,292 INFO L175 Difference]: Start difference. First operand has 81 places, 98 transitions, 852 flow. Second operand 12 states and 202 transitions. [2024-11-22 13:37:40,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 144 transitions, 1441 flow [2024-11-22 13:37:40,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 144 transitions, 1379 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-11-22 13:37:40,305 INFO L231 Difference]: Finished difference. Result has 85 places, 97 transitions, 921 flow [2024-11-22 13:37:40,306 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=921, PETRI_PLACES=85, PETRI_TRANSITIONS=97} [2024-11-22 13:37:40,307 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-11-22 13:37:40,308 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 97 transitions, 921 flow [2024-11-22 13:37:40,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:40,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:40,308 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:40,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:37:40,309 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:40,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash -17525711, now seen corresponding path program 1 times [2024-11-22 13:37:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:40,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831096682] [2024-11-22 13:37:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:37:40,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:41,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:41,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831096682] [2024-11-22 13:37:41,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831096682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:41,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:41,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:41,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498941672] [2024-11-22 13:37:41,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:41,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:41,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:41,120 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:41,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 97 transitions, 921 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:41,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:41,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:41,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:41,863 INFO L124 PetriNetUnfolderBase]: 763/1396 cut-off events. [2024-11-22 13:37:41,863 INFO L125 PetriNetUnfolderBase]: For 6622/6622 co-relation queries the response was YES. [2024-11-22 13:37:41,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6147 conditions, 1396 events. 763/1396 cut-off events. For 6622/6622 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7103 event pairs, 144 based on Foata normal form. 1/1397 useless extension candidates. Maximal degree in co-relation 4059. Up to 812 conditions per place. [2024-11-22 13:37:41,873 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 105 selfloop transitions, 44 changer transitions 33/183 dead transitions. [2024-11-22 13:37:41,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 1963 flow [2024-11-22 13:37:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:37:41,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:37:41,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2024-11-22 13:37:41,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2722222222222222 [2024-11-22 13:37:41,875 INFO L175 Difference]: Start difference. First operand has 85 places, 97 transitions, 921 flow. Second operand 15 states and 245 transitions. [2024-11-22 13:37:41,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 1963 flow [2024-11-22 13:37:41,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 183 transitions, 1839 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-11-22 13:37:41,898 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 1145 flow [2024-11-22 13:37:41,898 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1145, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2024-11-22 13:37:41,898 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-11-22 13:37:41,899 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 1145 flow [2024-11-22 13:37:41,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:41,899 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:41,899 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:41,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:37:41,899 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:41,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:41,900 INFO L85 PathProgramCache]: Analyzing trace with hash 966994303, now seen corresponding path program 2 times [2024-11-22 13:37:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:41,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174393856] [2024-11-22 13:37:41,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:37:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:41,921 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:41,921 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:42,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174393856] [2024-11-22 13:37:42,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174393856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:42,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:37:42,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795203506] [2024-11-22 13:37:42,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:42,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:37:42,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:37:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:37:42,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-22 13:37:42,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 1145 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-22 13:37:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:42,479 INFO L124 PetriNetUnfolderBase]: 619/1146 cut-off events. [2024-11-22 13:37:42,480 INFO L125 PetriNetUnfolderBase]: For 5924/5924 co-relation queries the response was YES. [2024-11-22 13:37:42,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5262 conditions, 1146 events. 619/1146 cut-off events. For 5924/5924 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5778 event pairs, 60 based on Foata normal form. 8/1154 useless extension candidates. Maximal degree in co-relation 5225. Up to 636 conditions per place. [2024-11-22 13:37:42,489 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 89 selfloop transitions, 73 changer transitions 0/168 dead transitions. [2024-11-22 13:37:42,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 168 transitions, 2022 flow [2024-11-22 13:37:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 13:37:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-22 13:37:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 272 transitions. [2024-11-22 13:37:42,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-11-22 13:37:42,491 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 1145 flow. Second operand 9 states and 272 transitions. [2024-11-22 13:37:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 168 transitions, 2022 flow [2024-11-22 13:37:42,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 168 transitions, 1835 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-11-22 13:37:42,511 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1633 flow [2024-11-22 13:37:42,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1633, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2024-11-22 13:37:42,512 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-11-22 13:37:42,512 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1633 flow [2024-11-22 13:37:42,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:42,512 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:42,512 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:42,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:37:42,512 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:42,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:42,513 INFO L85 PathProgramCache]: Analyzing trace with hash 293806189, now seen corresponding path program 3 times [2024-11-22 13:37:42,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:42,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535080518] [2024-11-22 13:37:42,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:37:42,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:42,553 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:37:42,557 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:43,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:43,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535080518] [2024-11-22 13:37:43,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535080518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:43,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:43,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:37:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320884135] [2024-11-22 13:37:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:43,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:37:43,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:37:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:37:43,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:43,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1633 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:43,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:43,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:43,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:43,922 INFO L124 PetriNetUnfolderBase]: 666/1245 cut-off events. [2024-11-22 13:37:43,922 INFO L125 PetriNetUnfolderBase]: For 6723/6723 co-relation queries the response was YES. [2024-11-22 13:37:43,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 1245 events. 666/1245 cut-off events. For 6723/6723 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6311 event pairs, 126 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 5604. Up to 781 conditions per place. [2024-11-22 13:37:43,932 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 117 selfloop transitions, 50 changer transitions 32/200 dead transitions. [2024-11-22 13:37:43,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 200 transitions, 2538 flow [2024-11-22 13:37:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:37:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:37:43,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 224 transitions. [2024-11-22 13:37:43,933 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26666666666666666 [2024-11-22 13:37:43,934 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1633 flow. Second operand 14 states and 224 transitions. [2024-11-22 13:37:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 200 transitions, 2538 flow [2024-11-22 13:37:43,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 200 transitions, 2428 flow, removed 49 selfloop flow, removed 1 redundant places. [2024-11-22 13:37:43,958 INFO L231 Difference]: Finished difference. Result has 112 places, 137 transitions, 1619 flow [2024-11-22 13:37:43,959 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1619, PETRI_PLACES=112, PETRI_TRANSITIONS=137} [2024-11-22 13:37:43,959 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-11-22 13:37:43,959 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 137 transitions, 1619 flow [2024-11-22 13:37:43,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:43,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:43,960 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:43,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:37:43,960 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:43,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1926880621, now seen corresponding path program 4 times [2024-11-22 13:37:43,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:43,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845378100] [2024-11-22 13:37:43,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:37:43,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:43,986 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:37:43,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:44,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:44,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845378100] [2024-11-22 13:37:44,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845378100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:44,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:44,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:37:44,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970873508] [2024-11-22 13:37:44,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:44,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:37:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:37:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:37:44,774 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:44,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 137 transitions, 1619 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:44,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:44,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:44,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:45,378 INFO L124 PetriNetUnfolderBase]: 676/1275 cut-off events. [2024-11-22 13:37:45,378 INFO L125 PetriNetUnfolderBase]: For 6447/6447 co-relation queries the response was YES. [2024-11-22 13:37:45,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6048 conditions, 1275 events. 676/1275 cut-off events. For 6447/6447 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6618 event pairs, 136 based on Foata normal form. 1/1276 useless extension candidates. Maximal degree in co-relation 6003. Up to 921 conditions per place. [2024-11-22 13:37:45,386 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 100 selfloop transitions, 53 changer transitions 48/202 dead transitions. [2024-11-22 13:37:45,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 202 transitions, 2545 flow [2024-11-22 13:37:45,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:37:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:37:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-22 13:37:45,389 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-11-22 13:37:45,389 INFO L175 Difference]: Start difference. First operand has 112 places, 137 transitions, 1619 flow. Second operand 14 states and 231 transitions. [2024-11-22 13:37:45,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 202 transitions, 2545 flow [2024-11-22 13:37:45,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 202 transitions, 2435 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-11-22 13:37:45,408 INFO L231 Difference]: Finished difference. Result has 117 places, 140 transitions, 1737 flow [2024-11-22 13:37:45,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1737, PETRI_PLACES=117, PETRI_TRANSITIONS=140} [2024-11-22 13:37:45,409 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-22 13:37:45,409 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 140 transitions, 1737 flow [2024-11-22 13:37:45,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:45,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:45,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:45,410 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:37:45,410 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:45,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:45,410 INFO L85 PathProgramCache]: Analyzing trace with hash -835392765, now seen corresponding path program 5 times [2024-11-22 13:37:45,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:45,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910011614] [2024-11-22 13:37:45,411 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:37:45,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:45,432 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:45,434 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910011614] [2024-11-22 13:37:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910011614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:46,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113707693] [2024-11-22 13:37:46,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:46,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:46,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:46,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:46,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 140 transitions, 1737 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:46,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:46,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:46,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:46,816 INFO L124 PetriNetUnfolderBase]: 740/1377 cut-off events. [2024-11-22 13:37:46,816 INFO L125 PetriNetUnfolderBase]: For 7478/7478 co-relation queries the response was YES. [2024-11-22 13:37:46,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 1377 events. 740/1377 cut-off events. For 7478/7478 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7146 event pairs, 177 based on Foata normal form. 1/1378 useless extension candidates. Maximal degree in co-relation 6610. Up to 921 conditions per place. [2024-11-22 13:37:46,831 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 124 selfloop transitions, 55 changer transitions 39/219 dead transitions. [2024-11-22 13:37:46,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 219 transitions, 2874 flow [2024-11-22 13:37:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:37:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:37:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 247 transitions. [2024-11-22 13:37:46,835 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.27444444444444444 [2024-11-22 13:37:46,835 INFO L175 Difference]: Start difference. First operand has 117 places, 140 transitions, 1737 flow. Second operand 15 states and 247 transitions. [2024-11-22 13:37:46,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 219 transitions, 2874 flow [2024-11-22 13:37:46,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 219 transitions, 2726 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-22 13:37:46,861 INFO L231 Difference]: Finished difference. Result has 117 places, 149 transitions, 1877 flow [2024-11-22 13:37:46,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1877, PETRI_PLACES=117, PETRI_TRANSITIONS=149} [2024-11-22 13:37:46,862 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-22 13:37:46,862 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 149 transitions, 1877 flow [2024-11-22 13:37:46,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:46,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:46,863 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:46,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 13:37:46,864 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:46,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash 583214691, now seen corresponding path program 6 times [2024-11-22 13:37:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:46,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487361146] [2024-11-22 13:37:46,865 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:37:46,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:46,891 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:37:46,892 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:47,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:47,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487361146] [2024-11-22 13:37:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487361146] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:47,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382789437] [2024-11-22 13:37:47,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:47,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:47,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:47,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:47,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:47,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:47,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 149 transitions, 1877 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:47,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:47,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:47,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:48,221 INFO L124 PetriNetUnfolderBase]: 683/1288 cut-off events. [2024-11-22 13:37:48,221 INFO L125 PetriNetUnfolderBase]: For 7074/7074 co-relation queries the response was YES. [2024-11-22 13:37:48,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 1288 events. 683/1288 cut-off events. For 7074/7074 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6747 event pairs, 176 based on Foata normal form. 1/1289 useless extension candidates. Maximal degree in co-relation 6268. Up to 866 conditions per place. [2024-11-22 13:37:48,233 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 122 selfloop transitions, 45 changer transitions 53/221 dead transitions. [2024-11-22 13:37:48,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 221 transitions, 2933 flow [2024-11-22 13:37:48,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:37:48,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:37:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 231 transitions. [2024-11-22 13:37:48,235 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.275 [2024-11-22 13:37:48,235 INFO L175 Difference]: Start difference. First operand has 117 places, 149 transitions, 1877 flow. Second operand 14 states and 231 transitions. [2024-11-22 13:37:48,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 221 transitions, 2933 flow [2024-11-22 13:37:48,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 221 transitions, 2866 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-11-22 13:37:48,261 INFO L231 Difference]: Finished difference. Result has 125 places, 143 transitions, 1833 flow [2024-11-22 13:37:48,261 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1833, PETRI_PLACES=125, PETRI_TRANSITIONS=143} [2024-11-22 13:37:48,261 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-11-22 13:37:48,262 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 143 transitions, 1833 flow [2024-11-22 13:37:48,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:48,262 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:48,262 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:48,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:37:48,262 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:48,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2121569829, now seen corresponding path program 7 times [2024-11-22 13:37:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:48,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143648053] [2024-11-22 13:37:48,263 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:37:48,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143648053] [2024-11-22 13:37:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143648053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:37:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323793957] [2024-11-22 13:37:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:48,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:37:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:37:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:37:49,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:49,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 143 transitions, 1833 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:49,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:49,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:49,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:49,498 INFO L124 PetriNetUnfolderBase]: 547/1034 cut-off events. [2024-11-22 13:37:49,498 INFO L125 PetriNetUnfolderBase]: For 6146/6146 co-relation queries the response was YES. [2024-11-22 13:37:49,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5140 conditions, 1034 events. 547/1034 cut-off events. For 6146/6146 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5115 event pairs, 147 based on Foata normal form. 1/1035 useless extension candidates. Maximal degree in co-relation 5093. Up to 751 conditions per place. [2024-11-22 13:37:49,506 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 96 selfloop transitions, 36 changer transitions 54/187 dead transitions. [2024-11-22 13:37:49,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 187 transitions, 2472 flow [2024-11-22 13:37:49,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:37:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:37:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-11-22 13:37:49,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2782051282051282 [2024-11-22 13:37:49,507 INFO L175 Difference]: Start difference. First operand has 125 places, 143 transitions, 1833 flow. Second operand 13 states and 217 transitions. [2024-11-22 13:37:49,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 187 transitions, 2472 flow [2024-11-22 13:37:49,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 187 transitions, 2366 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-11-22 13:37:49,525 INFO L231 Difference]: Finished difference. Result has 130 places, 121 transitions, 1525 flow [2024-11-22 13:37:49,525 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1735, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1525, PETRI_PLACES=130, PETRI_TRANSITIONS=121} [2024-11-22 13:37:49,525 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-11-22 13:37:49,525 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 121 transitions, 1525 flow [2024-11-22 13:37:49,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:49,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:49,526 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:49,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:37:49,526 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:49,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:49,526 INFO L85 PathProgramCache]: Analyzing trace with hash -944301171, now seen corresponding path program 8 times [2024-11-22 13:37:49,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:49,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137426088] [2024-11-22 13:37:49,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:37:49,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:49,550 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:49,550 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:49,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137426088] [2024-11-22 13:37:49,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137426088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:49,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:49,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:37:49,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022963694] [2024-11-22 13:37:49,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:49,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:37:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:37:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:37:49,756 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-22 13:37:49,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 121 transitions, 1525 flow. Second operand has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:49,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:49,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-22 13:37:49,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:50,073 INFO L124 PetriNetUnfolderBase]: 395/760 cut-off events. [2024-11-22 13:37:50,073 INFO L125 PetriNetUnfolderBase]: For 4571/4571 co-relation queries the response was YES. [2024-11-22 13:37:50,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3768 conditions, 760 events. 395/760 cut-off events. For 4571/4571 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3502 event pairs, 48 based on Foata normal form. 12/772 useless extension candidates. Maximal degree in co-relation 3722. Up to 350 conditions per place. [2024-11-22 13:37:50,079 INFO L140 encePairwiseOnDemand]: 51/60 looper letters, 81 selfloop transitions, 52 changer transitions 3/142 dead transitions. [2024-11-22 13:37:50,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 142 transitions, 1802 flow [2024-11-22 13:37:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:37:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-22 13:37:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-11-22 13:37:50,080 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5033333333333333 [2024-11-22 13:37:50,080 INFO L175 Difference]: Start difference. First operand has 130 places, 121 transitions, 1525 flow. Second operand 10 states and 302 transitions. [2024-11-22 13:37:50,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 142 transitions, 1802 flow [2024-11-22 13:37:50,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 142 transitions, 1658 flow, removed 36 selfloop flow, removed 16 redundant places. [2024-11-22 13:37:50,095 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 1439 flow [2024-11-22 13:37:50,095 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1439, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-11-22 13:37:50,095 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 64 predicate places. [2024-11-22 13:37:50,095 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 1439 flow [2024-11-22 13:37:50,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.714285714285715) internal successors, (180), 7 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:50,096 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:50,096 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:50,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:37:50,096 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:50,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 896429373, now seen corresponding path program 9 times [2024-11-22 13:37:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:50,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071989757] [2024-11-22 13:37:50,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:37:50,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:50,124 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-22 13:37:50,124 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:50,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:50,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071989757] [2024-11-22 13:37:50,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071989757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:50,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:50,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:50,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539170801] [2024-11-22 13:37:50,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:50,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:50,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:50,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:50,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:50,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:50,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:50,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:50,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:51,256 INFO L124 PetriNetUnfolderBase]: 425/814 cut-off events. [2024-11-22 13:37:51,257 INFO L125 PetriNetUnfolderBase]: For 4545/4545 co-relation queries the response was YES. [2024-11-22 13:37:51,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 814 events. 425/814 cut-off events. For 4545/4545 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3817 event pairs, 96 based on Foata normal form. 1/815 useless extension candidates. Maximal degree in co-relation 3857. Up to 524 conditions per place. [2024-11-22 13:37:51,262 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 80 selfloop transitions, 29 changer transitions 42/152 dead transitions. [2024-11-22 13:37:51,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 152 transitions, 1921 flow [2024-11-22 13:37:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:37:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-22 13:37:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2024-11-22 13:37:51,263 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.26785714285714285 [2024-11-22 13:37:51,263 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 1439 flow. Second operand 14 states and 225 transitions. [2024-11-22 13:37:51,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 152 transitions, 1921 flow [2024-11-22 13:37:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 152 transitions, 1820 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-22 13:37:51,276 INFO L231 Difference]: Finished difference. Result has 126 places, 94 transitions, 1054 flow [2024-11-22 13:37:51,276 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1054, PETRI_PLACES=126, PETRI_TRANSITIONS=94} [2024-11-22 13:37:51,276 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 73 predicate places. [2024-11-22 13:37:51,276 INFO L471 AbstractCegarLoop]: Abstraction has has 126 places, 94 transitions, 1054 flow [2024-11-22 13:37:51,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:51,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:51,277 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:51,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:37:51,277 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:51,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:51,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1901600429, now seen corresponding path program 10 times [2024-11-22 13:37:51,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:51,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157599629] [2024-11-22 13:37:51,277 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-22 13:37:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:51,300 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-22 13:37:51,300 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:51,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157599629] [2024-11-22 13:37:51,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157599629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:51,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:51,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:37:51,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036291056] [2024-11-22 13:37:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:51,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:37:51,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:51,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:37:51,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:37:51,690 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 60 [2024-11-22 13:37:51,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 94 transitions, 1054 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:51,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:51,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 60 [2024-11-22 13:37:51,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:51,967 INFO L124 PetriNetUnfolderBase]: 312/601 cut-off events. [2024-11-22 13:37:51,967 INFO L125 PetriNetUnfolderBase]: For 3298/3298 co-relation queries the response was YES. [2024-11-22 13:37:51,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2893 conditions, 601 events. 312/601 cut-off events. For 3298/3298 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2647 event pairs, 30 based on Foata normal form. 10/611 useless extension candidates. Maximal degree in co-relation 2852. Up to 260 conditions per place. [2024-11-22 13:37:51,971 INFO L140 encePairwiseOnDemand]: 50/60 looper letters, 67 selfloop transitions, 48 changer transitions 3/124 dead transitions. [2024-11-22 13:37:51,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 124 transitions, 1531 flow [2024-11-22 13:37:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:37:51,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-22 13:37:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 331 transitions. [2024-11-22 13:37:51,972 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4597222222222222 [2024-11-22 13:37:51,972 INFO L175 Difference]: Start difference. First operand has 126 places, 94 transitions, 1054 flow. Second operand 12 states and 331 transitions. [2024-11-22 13:37:51,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 124 transitions, 1531 flow [2024-11-22 13:37:51,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 124 transitions, 1298 flow, removed 41 selfloop flow, removed 22 redundant places. [2024-11-22 13:37:51,980 INFO L231 Difference]: Finished difference. Result has 101 places, 99 transitions, 1047 flow [2024-11-22 13:37:51,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1047, PETRI_PLACES=101, PETRI_TRANSITIONS=99} [2024-11-22 13:37:51,980 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-11-22 13:37:51,980 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 99 transitions, 1047 flow [2024-11-22 13:37:51,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:51,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:51,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:51,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:37:51,981 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:51,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:51,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1181854393, now seen corresponding path program 11 times [2024-11-22 13:37:51,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:51,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243217520] [2024-11-22 13:37:51,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-22 13:37:51,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:52,001 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:37:52,001 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:52,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243217520] [2024-11-22 13:37:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243217520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:52,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969787845] [2024-11-22 13:37:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:52,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:52,596 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:52,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 99 transitions, 1047 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:52,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:52,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:52,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:53,110 INFO L124 PetriNetUnfolderBase]: 362/701 cut-off events. [2024-11-22 13:37:53,111 INFO L125 PetriNetUnfolderBase]: For 3009/3009 co-relation queries the response was YES. [2024-11-22 13:37:53,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3190 conditions, 701 events. 362/701 cut-off events. For 3009/3009 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3123 event pairs, 71 based on Foata normal form. 1/702 useless extension candidates. Maximal degree in co-relation 2989. Up to 280 conditions per place. [2024-11-22 13:37:53,115 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 74 selfloop transitions, 31 changer transitions 50/156 dead transitions. [2024-11-22 13:37:53,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 156 transitions, 1789 flow [2024-11-22 13:37:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:37:53,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:37:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 235 transitions. [2024-11-22 13:37:53,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.2611111111111111 [2024-11-22 13:37:53,116 INFO L175 Difference]: Start difference. First operand has 101 places, 99 transitions, 1047 flow. Second operand 15 states and 235 transitions. [2024-11-22 13:37:53,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 156 transitions, 1789 flow [2024-11-22 13:37:53,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 1584 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-11-22 13:37:53,126 INFO L231 Difference]: Finished difference. Result has 106 places, 89 transitions, 835 flow [2024-11-22 13:37:53,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=835, PETRI_PLACES=106, PETRI_TRANSITIONS=89} [2024-11-22 13:37:53,127 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 53 predicate places. [2024-11-22 13:37:53,127 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 89 transitions, 835 flow [2024-11-22 13:37:53,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:53,127 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:53,127 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:53,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:37:53,127 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:53,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash -401347347, now seen corresponding path program 12 times [2024-11-22 13:37:53,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:53,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402492069] [2024-11-22 13:37:53,128 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-22 13:37:53,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:53,151 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-22 13:37:53,152 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:37:53,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:53,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:53,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402492069] [2024-11-22 13:37:53,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402492069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:53,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:53,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:37:53,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366795184] [2024-11-22 13:37:53,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:53,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:37:53,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:53,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:37:53,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:37:53,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:53,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 89 transitions, 835 flow. Second operand has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:53,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:53,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:53,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:54,240 INFO L124 PetriNetUnfolderBase]: 241/476 cut-off events. [2024-11-22 13:37:54,240 INFO L125 PetriNetUnfolderBase]: For 1591/1591 co-relation queries the response was YES. [2024-11-22 13:37:54,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 476 events. 241/476 cut-off events. For 1591/1591 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1901 event pairs, 52 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 1990. Up to 194 conditions per place. [2024-11-22 13:37:54,242 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 43 selfloop transitions, 11 changer transitions 66/121 dead transitions. [2024-11-22 13:37:54,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 121 transitions, 1235 flow [2024-11-22 13:37:54,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:37:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-22 13:37:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 225 transitions. [2024-11-22 13:37:54,243 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.25 [2024-11-22 13:37:54,243 INFO L175 Difference]: Start difference. First operand has 106 places, 89 transitions, 835 flow. Second operand 15 states and 225 transitions. [2024-11-22 13:37:54,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 121 transitions, 1235 flow [2024-11-22 13:37:54,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 121 transitions, 1164 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-11-22 13:37:54,249 INFO L231 Difference]: Finished difference. Result has 102 places, 53 transitions, 397 flow [2024-11-22 13:37:54,249 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=397, PETRI_PLACES=102, PETRI_TRANSITIONS=53} [2024-11-22 13:37:54,249 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-11-22 13:37:54,249 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 53 transitions, 397 flow [2024-11-22 13:37:54,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.5) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:54,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-22 13:37:54,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:37:54,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:37:54,250 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-11-22 13:37:54,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:37:54,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1144104591, now seen corresponding path program 13 times [2024-11-22 13:37:54,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:37:54,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605273638] [2024-11-22 13:37:54,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-22 13:37:54,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:37:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:37:54,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 13:37:54,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:37:54,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605273638] [2024-11-22 13:37:54,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605273638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:37:54,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:37:54,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:37:54,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964331322] [2024-11-22 13:37:54,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:37:54,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:37:54,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:37:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:37:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:37:54,882 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 60 [2024-11-22 13:37:54,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 53 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:54,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-22 13:37:54,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 60 [2024-11-22 13:37:54,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-22 13:37:55,250 INFO L124 PetriNetUnfolderBase]: 104/219 cut-off events. [2024-11-22 13:37:55,250 INFO L125 PetriNetUnfolderBase]: For 559/559 co-relation queries the response was YES. [2024-11-22 13:37:55,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 219 events. 104/219 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 666 event pairs, 10 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 859. Up to 84 conditions per place. [2024-11-22 13:37:55,251 INFO L140 encePairwiseOnDemand]: 49/60 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2024-11-22 13:37:55,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 65 transitions, 551 flow [2024-11-22 13:37:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 13:37:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-22 13:37:55,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 182 transitions. [2024-11-22 13:37:55,252 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.23333333333333334 [2024-11-22 13:37:55,252 INFO L175 Difference]: Start difference. First operand has 102 places, 53 transitions, 397 flow. Second operand 13 states and 182 transitions. [2024-11-22 13:37:55,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 65 transitions, 551 flow [2024-11-22 13:37:55,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 426 flow, removed 11 selfloop flow, removed 25 redundant places. [2024-11-22 13:37:55,254 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2024-11-22 13:37:55,254 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2024-11-22 13:37:55,254 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-11-22 13:37:55,254 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2024-11-22 13:37:55,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.307692307692308) internal successors, (160), 13 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 13:37:55,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2024-11-22 13:37:55,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2024-11-22 13:37:55,257 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2024-11-22 13:37:55,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2024-11-22 13:37:55,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2024-11-22 13:37:55,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2024-11-22 13:37:55,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-11-22 13:37:55,258 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-11-22 13:37:55,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:37:55,258 INFO L407 BasicCegarLoop]: Path program histogram: [13, 4, 1, 1, 1, 1] [2024-11-22 13:37:55,261 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-22 13:37:55,261 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-22 13:37:55,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:37:55 BasicIcfg [2024-11-22 13:37:55,266 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-22 13:37:55,267 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-22 13:37:55,267 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-22 13:37:55,267 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-22 13:37:55,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:37:35" (3/4) ... [2024-11-22 13:37:55,269 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-22 13:37:55,272 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2024-11-22 13:37:55,277 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 81 nodes and edges [2024-11-22 13:37:55,277 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2024-11-22 13:37:55,277 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-22 13:37:55,277 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-22 13:37:55,352 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-22 13:37:55,353 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-22 13:37:55,353 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-22 13:37:55,353 INFO L158 Benchmark]: Toolchain (without parser) took 21466.44ms. Allocated memory was 159.4MB in the beginning and 851.4MB in the end (delta: 692.1MB). Free memory was 84.2MB in the beginning and 463.7MB in the end (delta: -379.6MB). Peak memory consumption was 315.2MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,354 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory was 110.4MB in the beginning and 110.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-22 13:37:55,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.32ms. Allocated memory was 159.4MB in the beginning and 211.8MB in the end (delta: 52.4MB). Free memory was 84.0MB in the beginning and 167.3MB in the end (delta: -83.3MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.43ms. Allocated memory is still 211.8MB. Free memory was 167.3MB in the beginning and 164.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,355 INFO L158 Benchmark]: Boogie Preprocessor took 44.58ms. Allocated memory is still 211.8MB. Free memory was 164.1MB in the beginning and 161.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,355 INFO L158 Benchmark]: RCFGBuilder took 580.82ms. Allocated memory is still 211.8MB. Free memory was 161.0MB in the beginning and 118.0MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,355 INFO L158 Benchmark]: TraceAbstraction took 20165.06ms. Allocated memory was 211.8MB in the beginning and 851.4MB in the end (delta: 639.6MB). Free memory was 118.0MB in the beginning and 470.0MB in the end (delta: -352.0MB). Peak memory consumption was 287.6MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,356 INFO L158 Benchmark]: Witness Printer took 86.48ms. Allocated memory is still 851.4MB. Free memory was 470.0MB in the beginning and 463.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-22 13:37:55,357 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory was 110.4MB in the beginning and 110.2MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.32ms. Allocated memory was 159.4MB in the beginning and 211.8MB in the end (delta: 52.4MB). Free memory was 84.0MB in the beginning and 167.3MB in the end (delta: -83.3MB). Peak memory consumption was 40.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.43ms. Allocated memory is still 211.8MB. Free memory was 167.3MB in the beginning and 164.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.58ms. Allocated memory is still 211.8MB. Free memory was 164.1MB in the beginning and 161.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 580.82ms. Allocated memory is still 211.8MB. Free memory was 161.0MB in the beginning and 118.0MB in the end (delta: 43.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20165.06ms. Allocated memory was 211.8MB in the beginning and 851.4MB in the end (delta: 639.6MB). Free memory was 118.0MB in the beginning and 470.0MB in the end (delta: -352.0MB). Peak memory consumption was 287.6MB. Max. memory is 16.1GB. * Witness Printer took 86.48ms. Allocated memory is still 851.4MB. Free memory was 470.0MB in the beginning and 463.7MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: 20.1s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1940 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1790 mSDsluCounter, 2477 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2329 mSDsCounter, 226 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7617 IncrementalHoareTripleChecker+Invalid, 7843 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 226 mSolverCounterUnsat, 148 mSDtfsCounter, 7617 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1877occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 543 ConstructedInterpolants, 0 QuantifiedInterpolants, 5700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-22 13:37:55,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/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