./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.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/pthread-wmm/mix014_tso.oepc.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 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:09:48,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:09:48,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:09:48,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:09:48,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:09:48,920 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:09:48,921 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:09:48,921 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:09:48,922 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:09:48,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:09:48,922 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:09:48,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:09:48,923 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:09:48,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:09:48,923 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:09:48,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:09:48,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:09:48,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:09:48,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:09:48,925 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:09:48,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:09:48,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:09:48,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:09:48,930 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:09:48,930 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:09:48,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:09:48,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:09:48,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:09:48,931 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:09:48,931 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:09:48,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:09:48,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:09:48,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:48,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:09:48,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:09:48,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:09:48,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:09:48,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:09:48,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:09:48,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:09:48,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:09:48,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:09:48,934 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2024-11-16 19:09:49,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:09:49,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:09:49,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:09:49,200 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:09:49,200 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:09:49,201 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2024-11-16 19:09:50,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:09:50,864 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:09:50,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2024-11-16 19:09:50,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd50d069/26b0d401165e4acc86a5e43bafadbc2c/FLAGed26c394b [2024-11-16 19:09:50,896 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd50d069/26b0d401165e4acc86a5e43bafadbc2c [2024-11-16 19:09:50,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:09:50,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:09:50,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:50,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:09:50,907 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:09:50,907 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:50" (1/1) ... [2024-11-16 19:09:50,908 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10f863d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:50, skipping insertion in model container [2024-11-16 19:09:50,908 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:09:50" (1/1) ... [2024-11-16 19:09:50,987 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:09:51,179 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/pthread-wmm/mix014_tso.oepc.i[949,962] [2024-11-16 19:09:51,395 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:51,407 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:09:51,418 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/pthread-wmm/mix014_tso.oepc.i[949,962] [2024-11-16 19:09:51,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:09:51,508 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:09:51,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51 WrapperNode [2024-11-16 19:09:51,509 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:09:51,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:51,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:09:51,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:09:51,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,564 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2024-11-16 19:09:51,565 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:09:51,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:09:51,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:09:51,566 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:09:51,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,588 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,616 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-16 19:09:51,620 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,621 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:09:51,662 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:09:51,662 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:09:51,662 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:09:51,663 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (1/1) ... [2024-11-16 19:09:51,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:09:51,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:09:51,699 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 19:09:51,708 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 19:09:51,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:09:51,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:09:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:09:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:09:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:09:51,756 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:09:51,756 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:09:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:09:51,757 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:09:51,757 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:09:51,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:09:51,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:09:51,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:09:51,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:09:51,760 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 19:09:51,881 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:09:51,883 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:09:52,268 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:09:52,269 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:09:52,530 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:09:52,530 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:09:52,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:52 BoogieIcfgContainer [2024-11-16 19:09:52,531 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:09:52,534 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:09:52,534 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:09:52,537 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:09:52,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:09:50" (1/3) ... [2024-11-16 19:09:52,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6154ad24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:52, skipping insertion in model container [2024-11-16 19:09:52,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:09:51" (2/3) ... [2024-11-16 19:09:52,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6154ad24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:09:52, skipping insertion in model container [2024-11-16 19:09:52,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:09:52" (3/3) ... [2024-11-16 19:09:52,540 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2024-11-16 19:09:52,554 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:09:52,554 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-16 19:09:52,554 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:09:52,702 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:09:52,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 51 transitions, 118 flow [2024-11-16 19:09:52,747 INFO L124 PetriNetUnfolderBase]: 1/47 cut-off events. [2024-11-16 19:09:52,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:52,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 47 events. 1/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 108 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2024-11-16 19:09:52,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 51 transitions, 118 flow [2024-11-16 19:09:52,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 47 transitions, 106 flow [2024-11-16 19:09:52,761 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:09:52,769 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;@5feb5cb0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:09:52,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-16 19:09:52,775 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:09:52,776 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-16 19:09:52,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:09:52,776 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:09:52,776 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-16 19:09:52,777 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:09:52,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:09:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1227449743, now seen corresponding path program 1 times [2024-11-16 19:09:52,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:09:52,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066763944] [2024-11-16 19:09:52,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:09:52,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:09:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:09:53,131 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 19:09:53,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:09:53,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066763944] [2024-11-16 19:09:53,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066763944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:09:53,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:09:53,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:09:53,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564224086] [2024-11-16 19:09:53,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:09:53,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:09:53,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:09:53,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:09:53,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:09:53,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:09:53,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:09:53,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:09:53,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:09:53,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:01,950 INFO L124 PetriNetUnfolderBase]: 62656/82346 cut-off events. [2024-11-16 19:10:01,950 INFO L125 PetriNetUnfolderBase]: For 326/326 co-relation queries the response was YES. [2024-11-16 19:10:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164901 conditions, 82346 events. 62656/82346 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 2470. Compared 509920 event pairs, 6610 based on Foata normal form. 2058/81609 useless extension candidates. Maximal degree in co-relation 164889. Up to 72499 conditions per place. [2024-11-16 19:10:02,513 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 66 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-11-16 19:10:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 74 transitions, 302 flow [2024-11-16 19:10:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:10:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:10:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-11-16 19:10:02,526 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6601307189542484 [2024-11-16 19:10:02,527 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 106 flow. Second operand 3 states and 101 transitions. [2024-11-16 19:10:02,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 74 transitions, 302 flow [2024-11-16 19:10:02,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 296 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:10:02,538 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 102 flow [2024-11-16 19:10:02,542 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-11-16 19:10:02,545 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2024-11-16 19:10:02,545 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 102 flow [2024-11-16 19:10:02,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 19:10:02,545 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:02,545 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:10:02,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:10:02,545 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:02,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1538067688, now seen corresponding path program 1 times [2024-11-16 19:10:02,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:02,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776006333] [2024-11-16 19:10:02,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:02,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:02,714 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 19:10:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:02,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776006333] [2024-11-16 19:10:02,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776006333] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:02,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:02,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:10:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297946106] [2024-11-16 19:10:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:02,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:10:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:10:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:10:02,718 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:02,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:10:02,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:02,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:02,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:09,673 INFO L124 PetriNetUnfolderBase]: 53337/70305 cut-off events. [2024-11-16 19:10:09,673 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-16 19:10:09,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143077 conditions, 70305 events. 53337/70305 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 2016. Compared 417206 event pairs, 6742 based on Foata normal form. 0/70222 useless extension candidates. Maximal degree in co-relation 143067. Up to 60246 conditions per place. [2024-11-16 19:10:10,291 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 61 selfloop transitions, 2 changer transitions 2/71 dead transitions. [2024-11-16 19:10:10,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 288 flow [2024-11-16 19:10:10,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:10:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:10:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-16 19:10:10,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-11-16 19:10:10,296 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 102 flow. Second operand 3 states and 96 transitions. [2024-11-16 19:10:10,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 288 flow [2024-11-16 19:10:10,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:10:10,304 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:10:10,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2024-11-16 19:10:10,305 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -4 predicate places. [2024-11-16 19:10:10,306 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:10:10,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 19:10:10,306 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:10,306 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:10:10,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:10:10,307 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:10,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:10,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2002296558, now seen corresponding path program 1 times [2024-11-16 19:10:10,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:10,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204076830] [2024-11-16 19:10:10,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:10,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:10,676 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 19:10:10,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:10,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204076830] [2024-11-16 19:10:10,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204076830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:10,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:10,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:10:10,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505922847] [2024-11-16 19:10:10,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:10,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:10:10,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:10,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:10:10,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:10:10,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:10,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:10:10,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:10,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:10,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:15,786 INFO L124 PetriNetUnfolderBase]: 42373/59219 cut-off events. [2024-11-16 19:10:15,787 INFO L125 PetriNetUnfolderBase]: For 2130/2130 co-relation queries the response was YES. [2024-11-16 19:10:15,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118405 conditions, 59219 events. 42373/59219 cut-off events. For 2130/2130 co-relation queries the response was YES. Maximal size of possible extension queue 1843. Compared 385525 event pairs, 5331 based on Foata normal form. 1764/60931 useless extension candidates. Maximal degree in co-relation 118395. Up to 34369 conditions per place. [2024-11-16 19:10:16,277 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 78 selfloop transitions, 6 changer transitions 1/91 dead transitions. [2024-11-16 19:10:16,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 91 transitions, 374 flow [2024-11-16 19:10:16,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:10:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:10:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:10:16,283 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-11-16 19:10:16,283 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:10:16,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 91 transitions, 374 flow [2024-11-16 19:10:16,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 91 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:10:16,291 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 136 flow [2024-11-16 19:10:16,291 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-11-16 19:10:16,293 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-11-16 19:10:16,294 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 136 flow [2024-11-16 19:10:16,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 19:10:16,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:16,294 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] [2024-11-16 19:10:16,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:10:16,295 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:16,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:16,295 INFO L85 PathProgramCache]: Analyzing trace with hash 2121031864, now seen corresponding path program 1 times [2024-11-16 19:10:16,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:16,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772702914] [2024-11-16 19:10:16,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:16,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:16,727 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 19:10:16,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772702914] [2024-11-16 19:10:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772702914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:16,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:16,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:10:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070933499] [2024-11-16 19:10:16,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:16,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:10:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:10:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:10:16,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:16,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 19:10:16,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:16,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:16,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:10:20,344 INFO L124 PetriNetUnfolderBase]: 26373/37059 cut-off events. [2024-11-16 19:10:20,345 INFO L125 PetriNetUnfolderBase]: For 7076/7076 co-relation queries the response was YES. [2024-11-16 19:10:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82937 conditions, 37059 events. 26373/37059 cut-off events. For 7076/7076 co-relation queries the response was YES. Maximal size of possible extension queue 941. Compared 224833 event pairs, 3173 based on Foata normal form. 1364/38371 useless extension candidates. Maximal degree in co-relation 82925. Up to 14929 conditions per place. [2024-11-16 19:10:20,486 INFO L140 encePairwiseOnDemand]: 44/51 looper letters, 101 selfloop transitions, 10 changer transitions 1/118 dead transitions. [2024-11-16 19:10:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 118 transitions, 531 flow [2024-11-16 19:10:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:10:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:10:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:10:20,488 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6431372549019608 [2024-11-16 19:10:20,488 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 136 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:10:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 118 transitions, 531 flow [2024-11-16 19:10:20,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 118 transitions, 520 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-16 19:10:20,497 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 188 flow [2024-11-16 19:10:20,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-11-16 19:10:20,498 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-16 19:10:20,498 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 188 flow [2024-11-16 19:10:20,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 19:10:20,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:10:20,498 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 19:10:20,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:10:20,498 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2024-11-16 19:10:20,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:10:20,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2099408896, now seen corresponding path program 1 times [2024-11-16 19:10:20,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:10:20,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420594374] [2024-11-16 19:10:20,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:10:20,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:10:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:10:20,820 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 19:10:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:10:20,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420594374] [2024-11-16 19:10:20,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420594374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:10:20,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:10:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:10:20,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531391286] [2024-11-16 19:10:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:10:20,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:10:20,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:10:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:10:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:10:20,823 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 51 [2024-11-16 19:10:20,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 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 19:10:20,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:10:20,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 51 [2024-11-16 19:10:20,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand