./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.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 cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:22:25,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:22:25,566 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:22:25,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:22:25,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:22:25,604 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:22:25,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:22:25,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:22:25,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:22:25,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:22:25,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:22:25,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:22:25,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:22:25,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:22:25,611 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:22:25,611 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:22:25,613 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:22:25,613 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:22:25,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:22:25,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:22:25,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:22:25,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:22:25,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:22:25,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:22:25,615 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:22:25,615 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:22:25,616 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:22:25,616 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:22:25,616 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:22:25,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:22:25,616 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:22:25,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:22:25,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:22:25,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:22:25,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:22:25,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:22:25,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:22:25,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:22:25,618 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:22:25,618 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:22:25,618 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:22:25,619 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:22:25,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2024-11-16 19:22:25,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:22:25,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:22:25,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:22:25,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:22:25,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:22:25,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-16 19:22:27,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:22:27,649 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:22:27,649 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2024-11-16 19:22:27,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c232845/cc250b248dd54a3297f19a8aeacd762c/FLAG891b8d021 [2024-11-16 19:22:27,979 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20c232845/cc250b248dd54a3297f19a8aeacd762c [2024-11-16 19:22:27,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:22:27,982 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:22:27,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:22:27,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:22:27,991 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:22:27,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:22:27" (1/1) ... [2024-11-16 19:22:27,992 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a48a1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:27, skipping insertion in model container [2024-11-16 19:22:27,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:22:27" (1/1) ... [2024-11-16 19:22:28,035 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:22:28,224 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-16 19:22:28,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:22:28,417 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:22:28,432 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/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2024-11-16 19:22:28,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:22:28,532 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:22:28,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28 WrapperNode [2024-11-16 19:22:28,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:22:28,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:22:28,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:22:28,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:22:28,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,560 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,591 INFO L138 Inliner]: procedures = 165, calls = 41, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2024-11-16 19:22:28,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:22:28,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:22:28,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:22:28,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:22:28,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,607 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,638 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2024-11-16 19:22:28,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,648 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,650 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,654 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:22:28,658 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:22:28,658 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:22:28,659 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:22:28,659 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (1/1) ... [2024-11-16 19:22:28,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:22:28,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:22:28,689 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) [2024-11-16 19:22:28,692 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 [2024-11-16 19:22:28,745 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-11-16 19:22:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-11-16 19:22:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:22:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:22:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-11-16 19:22:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-11-16 19:22:28,746 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-16 19:22:28,746 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-16 19:22:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:22:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:22:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:22:28,747 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:22:28,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:22:28,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:22:28,750 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:22:28,938 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:22:28,940 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:22:29,227 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:22:29,228 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:22:29,397 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:22:29,397 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:22:29,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:22:29 BoogieIcfgContainer [2024-11-16 19:22:29,398 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:22:29,400 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:22:29,400 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:22:29,404 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:22:29,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:22:27" (1/3) ... [2024-11-16 19:22:29,405 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1beffaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:22:29, skipping insertion in model container [2024-11-16 19:22:29,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:22:28" (2/3) ... [2024-11-16 19:22:29,406 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1beffaa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:22:29, skipping insertion in model container [2024-11-16 19:22:29,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:22:29" (3/3) ... [2024-11-16 19:22:29,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2024-11-16 19:22:29,427 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:22:29,427 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-16 19:22:29,427 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:22:29,489 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:22:29,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2024-11-16 19:22:29,573 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2024-11-16 19:22:29,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:22:29,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2024-11-16 19:22:29,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2024-11-16 19:22:29,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2024-11-16 19:22:29,597 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:22:29,604 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;@7dcae7ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:22:29,605 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-16 19:22:29,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:22:29,622 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-11-16 19:22:29,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:22:29,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:22:29,623 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:22:29,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:22:29,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:22:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash -2012173132, now seen corresponding path program 1 times [2024-11-16 19:22:29,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:22:29,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137729890] [2024-11-16 19:22:29,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:22:29,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:22:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:22:30,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:22:30,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:22:30,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137729890] [2024-11-16 19:22:30,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137729890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:22:30,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:22:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:22:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256259782] [2024-11-16 19:22:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:22:30,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:22:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:22:30,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:22:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:22:30,171 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-16 19:22:30,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-11-16 19:22:30,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:22:30,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-16 19:22:30,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:22:35,602 INFO L124 PetriNetUnfolderBase]: 40583/60768 cut-off events. [2024-11-16 19:22:35,602 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2024-11-16 19:22:35,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117487 conditions, 60768 events. 40583/60768 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 1494. Compared 453558 event pairs, 9447 based on Foata normal form. 4488/64618 useless extension candidates. Maximal degree in co-relation 117476. Up to 14925 conditions per place. [2024-11-16 19:22:35,968 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 211 selfloop transitions, 11 changer transitions 0/238 dead transitions. [2024-11-16 19:22:35,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 238 transitions, 950 flow [2024-11-16 19:22:35,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:22:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:22:35,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 398 transitions. [2024-11-16 19:22:35,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7316176470588235 [2024-11-16 19:22:35,986 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 398 transitions. [2024-11-16 19:22:35,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 238 transitions, 950 flow [2024-11-16 19:22:35,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 238 transitions, 940 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-16 19:22:36,003 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2024-11-16 19:22:36,005 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-16 19:22:36,011 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2024-11-16 19:22:36,011 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2024-11-16 19:22:36,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 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) [2024-11-16 19:22:36,012 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:22:36,012 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:22:36,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:22:36,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:22:36,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:22:36,014 INFO L85 PathProgramCache]: Analyzing trace with hash 748343388, now seen corresponding path program 1 times [2024-11-16 19:22:36,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:22:36,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084304412] [2024-11-16 19:22:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:22:36,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:22:36,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:22:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:22:36,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:22:36,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084304412] [2024-11-16 19:22:36,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084304412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:22:36,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:22:36,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:22:36,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147478587] [2024-11-16 19:22:36,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:22:36,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:22:36,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:22:36,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:22:36,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:22:36,169 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-16 19:22:36,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-16 19:22:36,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:22:36,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-16 19:22:36,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:22:41,449 INFO L124 PetriNetUnfolderBase]: 54392/82525 cut-off events. [2024-11-16 19:22:41,449 INFO L125 PetriNetUnfolderBase]: For 16185/16185 co-relation queries the response was YES. [2024-11-16 19:22:41,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177228 conditions, 82525 events. 54392/82525 cut-off events. For 16185/16185 co-relation queries the response was YES. Maximal size of possible extension queue 2219. Compared 649884 event pairs, 11965 based on Foata normal form. 0/81040 useless extension candidates. Maximal degree in co-relation 177214. Up to 32684 conditions per place. [2024-11-16 19:22:41,866 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 204 selfloop transitions, 17 changer transitions 0/237 dead transitions. [2024-11-16 19:22:41,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 237 transitions, 1106 flow [2024-11-16 19:22:41,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:22:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:22:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 341 transitions. [2024-11-16 19:22:41,869 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6268382352941176 [2024-11-16 19:22:41,869 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 341 transitions. [2024-11-16 19:22:41,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 237 transitions, 1106 flow [2024-11-16 19:22:42,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 237 transitions, 1106 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:22:42,566 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2024-11-16 19:22:42,566 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2024-11-16 19:22:42,567 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2024-11-16 19:22:42,567 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2024-11-16 19:22:42,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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) [2024-11-16 19:22:42,568 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:22:42,568 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:22:42,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:22:42,568 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:22:42,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:22:42,569 INFO L85 PathProgramCache]: Analyzing trace with hash -201667651, now seen corresponding path program 1 times [2024-11-16 19:22:42,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:22:42,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786339515] [2024-11-16 19:22:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:22:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:22:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:22:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:22:42,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:22:42,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786339515] [2024-11-16 19:22:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786339515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:22:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:22:42,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:22:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028267509] [2024-11-16 19:22:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:22:42,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:22:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:22:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:22:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:22:42,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-16 19:22:42,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-11-16 19:22:42,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:22:42,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-16 19:22:42,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:22:50,157 INFO L124 PetriNetUnfolderBase]: 69275/108991 cut-off events. [2024-11-16 19:22:50,158 INFO L125 PetriNetUnfolderBase]: For 45990/46473 co-relation queries the response was YES. [2024-11-16 19:22:50,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255920 conditions, 108991 events. 69275/108991 cut-off events. For 45990/46473 co-relation queries the response was YES. Maximal size of possible extension queue 3256. Compared 942166 event pairs, 25930 based on Foata normal form. 0/107448 useless extension candidates. Maximal degree in co-relation 255900. Up to 49249 conditions per place. [2024-11-16 19:22:50,763 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 227 selfloop transitions, 17 changer transitions 3/266 dead transitions. [2024-11-16 19:22:50,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 266 transitions, 1440 flow [2024-11-16 19:22:50,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:22:50,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:22:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 351 transitions. [2024-11-16 19:22:50,766 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6452205882352942 [2024-11-16 19:22:50,766 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 351 transitions. [2024-11-16 19:22:50,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 266 transitions, 1440 flow [2024-11-16 19:22:53,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 266 transitions, 1440 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:22:53,820 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2024-11-16 19:22:53,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2024-11-16 19:22:53,821 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2024-11-16 19:22:53,822 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2024-11-16 19:22:53,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2024-11-16 19:22:53,822 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:22:53,822 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:22:53,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:22:53,823 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:22:53,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:22:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1617683842, now seen corresponding path program 1 times [2024-11-16 19:22:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:22:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108778608] [2024-11-16 19:22:53,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:22:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:22:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:22:53,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:22:53,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:22:53,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108778608] [2024-11-16 19:22:53,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108778608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:22:53,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:22:53,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:22:53,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597161382] [2024-11-16 19:22:53,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:22:53,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:22:53,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:22:53,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:22:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:22:53,923 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-16 19:22:53,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-16 19:22:53,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:22:53,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-16 19:22:53,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:22:59,925 INFO L124 PetriNetUnfolderBase]: 49230/80063 cut-off events. [2024-11-16 19:22:59,926 INFO L125 PetriNetUnfolderBase]: For 54192/55549 co-relation queries the response was YES. [2024-11-16 19:23:00,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208358 conditions, 80063 events. 49230/80063 cut-off events. For 54192/55549 co-relation queries the response was YES. Maximal size of possible extension queue 2926. Compared 721055 event pairs, 18179 based on Foata normal form. 3452/83345 useless extension candidates. Maximal degree in co-relation 208332. Up to 43975 conditions per place. [2024-11-16 19:23:00,461 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 126 selfloop transitions, 13 changer transitions 0/160 dead transitions. [2024-11-16 19:23:00,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 982 flow [2024-11-16 19:23:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:23:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:23:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-11-16 19:23:00,463 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7156862745098039 [2024-11-16 19:23:00,463 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 146 transitions. [2024-11-16 19:23:00,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 982 flow [2024-11-16 19:23:03,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 160 transitions, 982 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:23:03,242 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2024-11-16 19:23:03,242 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2024-11-16 19:23:03,243 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2024-11-16 19:23:03,244 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2024-11-16 19:23:03,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2024-11-16 19:23:03,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:03,244 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] [2024-11-16 19:23:03,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:23:03,244 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:23:03,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:03,245 INFO L85 PathProgramCache]: Analyzing trace with hash 918235001, now seen corresponding path program 1 times [2024-11-16 19:23:03,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:03,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918861080] [2024-11-16 19:23:03,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:03,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:03,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:03,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:03,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918861080] [2024-11-16 19:23:03,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918861080] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:03,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:03,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:23:03,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738291282] [2024-11-16 19:23:03,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:03,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:23:03,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:23:03,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:23:03,461 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-16 19:23:03,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2024-11-16 19:23:03,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:03,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-16 19:23:03,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:06,725 INFO L124 PetriNetUnfolderBase]: 24224/41566 cut-off events. [2024-11-16 19:23:06,726 INFO L125 PetriNetUnfolderBase]: For 36567/37639 co-relation queries the response was YES. [2024-11-16 19:23:06,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118535 conditions, 41566 events. 24224/41566 cut-off events. For 36567/37639 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 360417 event pairs, 7113 based on Foata normal form. 1484/42941 useless extension candidates. Maximal degree in co-relation 118507. Up to 21998 conditions per place. [2024-11-16 19:23:07,002 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 111 selfloop transitions, 10 changer transitions 0/142 dead transitions. [2024-11-16 19:23:07,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 142 transitions, 885 flow [2024-11-16 19:23:07,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:23:07,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:23:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-11-16 19:23:07,003 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2024-11-16 19:23:07,004 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 151 transitions. [2024-11-16 19:23:07,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 142 transitions, 885 flow [2024-11-16 19:23:07,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 142 transitions, 868 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:23:07,693 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2024-11-16 19:23:07,694 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2024-11-16 19:23:07,694 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2024-11-16 19:23:07,694 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2024-11-16 19:23:07,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 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) [2024-11-16 19:23:07,695 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:07,695 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] [2024-11-16 19:23:07,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:23:07,695 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:23:07,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -42456877, now seen corresponding path program 1 times [2024-11-16 19:23:07,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:07,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494231062] [2024-11-16 19:23:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:07,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:07,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:07,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494231062] [2024-11-16 19:23:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494231062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:23:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309925365] [2024-11-16 19:23:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:07,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:23:07,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:07,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:23:07,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:23:07,795 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-16 19:23:07,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-16 19:23:07,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:07,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-16 19:23:07,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:11,291 INFO L124 PetriNetUnfolderBase]: 27130/43776 cut-off events. [2024-11-16 19:23:11,291 INFO L125 PetriNetUnfolderBase]: For 40180/41134 co-relation queries the response was YES. [2024-11-16 19:23:11,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128475 conditions, 43776 events. 27130/43776 cut-off events. For 40180/41134 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 354889 event pairs, 5735 based on Foata normal form. 649/44346 useless extension candidates. Maximal degree in co-relation 128446. Up to 13198 conditions per place. [2024-11-16 19:23:11,553 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 211 selfloop transitions, 27 changer transitions 27/283 dead transitions. [2024-11-16 19:23:11,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 283 transitions, 1866 flow [2024-11-16 19:23:11,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:23:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:23:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 335 transitions. [2024-11-16 19:23:11,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6158088235294118 [2024-11-16 19:23:11,555 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 335 transitions. [2024-11-16 19:23:11,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 283 transitions, 1866 flow [2024-11-16 19:23:12,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 283 transitions, 1812 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:23:12,339 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2024-11-16 19:23:12,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-11-16 19:23:12,339 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2024-11-16 19:23:12,340 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2024-11-16 19:23:12,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 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) [2024-11-16 19:23:12,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:12,340 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] [2024-11-16 19:23:12,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:23:12,340 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:23:12,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:12,341 INFO L85 PathProgramCache]: Analyzing trace with hash -922909252, now seen corresponding path program 1 times [2024-11-16 19:23:12,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:12,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239936605] [2024-11-16 19:23:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:12,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:12,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:12,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239936605] [2024-11-16 19:23:12,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239936605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:12,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:12,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:23:12,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299215509] [2024-11-16 19:23:12,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:12,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:23:12,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:23:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:23:12,471 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-16 19:23:12,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-16 19:23:12,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:12,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-16 19:23:12,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:15,188 INFO L124 PetriNetUnfolderBase]: 23757/38224 cut-off events. [2024-11-16 19:23:15,189 INFO L125 PetriNetUnfolderBase]: For 38278/38349 co-relation queries the response was YES. [2024-11-16 19:23:15,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113489 conditions, 38224 events. 23757/38224 cut-off events. For 38278/38349 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 299822 event pairs, 4938 based on Foata normal form. 714/38907 useless extension candidates. Maximal degree in co-relation 113461. Up to 8092 conditions per place. [2024-11-16 19:23:15,395 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 207 selfloop transitions, 41 changer transitions 33/297 dead transitions. [2024-11-16 19:23:15,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 297 transitions, 1929 flow [2024-11-16 19:23:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:23:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:23:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 426 transitions. [2024-11-16 19:23:15,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-11-16 19:23:15,397 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 426 transitions. [2024-11-16 19:23:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 297 transitions, 1929 flow [2024-11-16 19:23:15,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 297 transitions, 1926 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-16 19:23:15,645 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2024-11-16 19:23:15,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-11-16 19:23:15,646 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2024-11-16 19:23:15,646 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2024-11-16 19:23:15,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 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) [2024-11-16 19:23:15,647 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:15,647 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] [2024-11-16 19:23:15,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:23:15,647 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:23:15,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 828471837, now seen corresponding path program 1 times [2024-11-16 19:23:15,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:15,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955406516] [2024-11-16 19:23:15,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:15,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:16,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:16,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:16,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955406516] [2024-11-16 19:23:16,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955406516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:16,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:16,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 19:23:16,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451814713] [2024-11-16 19:23:16,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:16,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:23:16,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:16,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:23:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:23:16,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 68 [2024-11-16 19:23:16,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-16 19:23:16,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:16,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 68 [2024-11-16 19:23:16,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:23:19,138 INFO L124 PetriNetUnfolderBase]: 22059/36131 cut-off events. [2024-11-16 19:23:19,138 INFO L125 PetriNetUnfolderBase]: For 54471/54964 co-relation queries the response was YES. [2024-11-16 19:23:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115385 conditions, 36131 events. 22059/36131 cut-off events. For 54471/54964 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 284749 event pairs, 5815 based on Foata normal form. 422/36513 useless extension candidates. Maximal degree in co-relation 115353. Up to 7584 conditions per place. [2024-11-16 19:23:19,298 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 111 selfloop transitions, 20 changer transitions 150/295 dead transitions. [2024-11-16 19:23:19,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 295 transitions, 2139 flow [2024-11-16 19:23:19,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 19:23:19,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-16 19:23:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 409 transitions. [2024-11-16 19:23:19,299 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5467914438502673 [2024-11-16 19:23:19,299 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 409 transitions. [2024-11-16 19:23:19,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 295 transitions, 2139 flow [2024-11-16 19:23:19,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 295 transitions, 2074 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-16 19:23:19,656 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2024-11-16 19:23:19,656 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2024-11-16 19:23:19,656 INFO L277 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2024-11-16 19:23:19,657 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2024-11-16 19:23:19,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 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) [2024-11-16 19:23:19,657 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:23:19,657 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, 1, 1, 1] [2024-11-16 19:23:19,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:23:19,657 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:23:19,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:23:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2059581342, now seen corresponding path program 1 times [2024-11-16 19:23:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:23:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91883159] [2024-11-16 19:23:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:23:19,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:23:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:23:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:23:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:23:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91883159] [2024-11-16 19:23:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91883159] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:23:19,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:23:19,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:23:19,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793406328] [2024-11-16 19:23:19,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:23:19,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:23:19,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:23:19,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:23:19,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:23:19,821 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-11-16 19:23:19,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-16 19:23:19,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:23:19,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-11-16 19:23:19,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand