./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix037_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/mix037_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 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:11:57,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:11:57,921 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:11:57,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:11:57,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:11:57,952 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:11:57,953 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:11:57,953 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:11:57,954 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:11:57,955 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:11:57,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:11:57,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:11:57,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:11:57,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:11:57,958 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:11:57,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:11:57,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:11:57,958 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:11:57,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:11:57,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:11:57,959 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:11:57,959 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:11:57,962 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:11:57,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:11:57,963 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:11:57,963 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:11:57,963 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:11:57,963 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:11:57,964 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:11:57,964 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:11:57,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:11:57,965 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:11:57,965 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:11:57,965 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:11:57,965 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:11:57,965 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:11:57,966 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:11:57,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526eb61a43a151355b0c30c3cdf9498dba5b0f807210313241440694b1deb106 [2024-11-16 19:11:58,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:11:58,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:11:58,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:11:58,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:11:58,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:11:58,238 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2024-11-16 19:11:59,479 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:11:59,708 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:11:59,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix037_tso.oepc.i [2024-11-16 19:11:59,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c31746e/f6aeb1e20a204916b97d816cfe2a0b1e/FLAG09097faf0 [2024-11-16 19:12:00,055 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c31746e/f6aeb1e20a204916b97d816cfe2a0b1e [2024-11-16 19:12:00,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:12:00,058 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:12:00,059 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:00,059 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:12:00,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:12:00,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@368be377 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00, skipping insertion in model container [2024-11-16 19:12:00,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,098 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:12:00,253 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/mix037_tso.oepc.i[949,962] [2024-11-16 19:12:00,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:00,413 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:12:00,425 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/mix037_tso.oepc.i[949,962] [2024-11-16 19:12:00,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:12:00,510 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:12:00,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00 WrapperNode [2024-11-16 19:12:00,511 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:12:00,512 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:00,512 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:12:00,512 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:12:00,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,556 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 148 [2024-11-16 19:12:00,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:12:00,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:12:00,558 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:12:00,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:12:00,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,571 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,589 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 19:12:00,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,595 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:12:00,606 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:12:00,606 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:12:00,606 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:12:00,607 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (1/1) ... [2024-11-16 19:12:00,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:12:00,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:12:00,644 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 19:12:00,653 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 19:12:00,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-16 19:12:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:12:00,692 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-16 19:12:00,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-16 19:12:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-16 19:12:00,693 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-16 19:12:00,693 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-16 19:12:00,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-16 19:12:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-16 19:12:00,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-16 19:12:00,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:12:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-16 19:12:00,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:12:00,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:12:00,696 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 19:12:00,833 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:12:00,835 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:12:01,203 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:12:01,204 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:12:01,337 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:12:01,337 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:12:01,337 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:01 BoogieIcfgContainer [2024-11-16 19:12:01,338 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:12:01,339 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:12:01,339 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:12:01,341 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:12:01,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:12:00" (1/3) ... [2024-11-16 19:12:01,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f02d14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:01, skipping insertion in model container [2024-11-16 19:12:01,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:12:00" (2/3) ... [2024-11-16 19:12:01,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f02d14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:12:01, skipping insertion in model container [2024-11-16 19:12:01,343 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:12:01" (3/3) ... [2024-11-16 19:12:01,344 INFO L112 eAbstractionObserver]: Analyzing ICFG mix037_tso.oepc.i [2024-11-16 19:12:01,356 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:12:01,356 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:12:01,356 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:12:01,394 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 19:12:01,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:01,448 INFO L124 PetriNetUnfolderBase]: 1/46 cut-off events. [2024-11-16 19:12:01,448 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:01,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 1/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2024-11-16 19:12:01,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 50 transitions, 116 flow [2024-11-16 19:12:01,456 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 46 transitions, 104 flow [2024-11-16 19:12:01,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:12:01,468 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;@76328f54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:12:01,468 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:12:01,472 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:12:01,472 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-11-16 19:12:01,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:12:01,473 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:01,473 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-16 19:12:01,474 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:01,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -11233496, now seen corresponding path program 1 times [2024-11-16 19:12:01,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:01,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322306675] [2024-11-16 19:12:01,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:01,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:01,910 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 19:12:01,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:01,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322306675] [2024-11-16 19:12:01,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322306675] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:01,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:01,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-16 19:12:01,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280712421] [2024-11-16 19:12:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:01,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:12:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:12:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:12:01,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:01,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 104 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 19:12:01,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:01,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:01,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:07,562 INFO L124 PetriNetUnfolderBase]: 51971/68455 cut-off events. [2024-11-16 19:12:07,562 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-11-16 19:12:07,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137019 conditions, 68455 events. 51971/68455 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 1951. Compared 411140 event pairs, 6441 based on Foata normal form. 1728/70129 useless extension candidates. Maximal degree in co-relation 137007. Up to 58911 conditions per place. [2024-11-16 19:12:07,945 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 63 selfloop transitions, 2 changer transitions 2/73 dead transitions. [2024-11-16 19:12:07,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 73 transitions, 298 flow [2024-11-16 19:12:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:12:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:12:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-16 19:12:07,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-16 19:12:07,958 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 104 flow. Second operand 3 states and 100 transitions. [2024-11-16 19:12:07,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 73 transitions, 298 flow [2024-11-16 19:12:07,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 292 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:07,970 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:07,972 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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 19:12:07,976 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -3 predicate places. [2024-11-16 19:12:07,976 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 98 flow [2024-11-16 19:12:07,976 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 19:12:07,977 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:07,977 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:07,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:12:07,978 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:07,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash 372752113, now seen corresponding path program 1 times [2024-11-16 19:12:07,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095334459] [2024-11-16 19:12:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:08,285 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 19:12:08,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:08,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095334459] [2024-11-16 19:12:08,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095334459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:08,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:08,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:08,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216462607] [2024-11-16 19:12:08,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:08,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:08,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:08,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:08,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:12:08,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:08,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:08,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:14,143 INFO L124 PetriNetUnfolderBase]: 59315/79115 cut-off events. [2024-11-16 19:12:14,143 INFO L125 PetriNetUnfolderBase]: For 3108/3108 co-relation queries the response was YES. [2024-11-16 19:12:14,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160721 conditions, 79115 events. 59315/79115 cut-off events. For 3108/3108 co-relation queries the response was YES. Maximal size of possible extension queue 2174. Compared 470734 event pairs, 13415 based on Foata normal form. 0/77960 useless extension candidates. Maximal degree in co-relation 160711. Up to 37153 conditions per place. [2024-11-16 19:12:14,516 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 54 selfloop transitions, 2 changer transitions 99/160 dead transitions. [2024-11-16 19:12:14,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 160 transitions, 654 flow [2024-11-16 19:12:14,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:12:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:12:14,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 229 transitions. [2024-11-16 19:12:14,518 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5725 [2024-11-16 19:12:14,518 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 98 flow. Second operand 8 states and 229 transitions. [2024-11-16 19:12:14,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 160 transitions, 654 flow [2024-11-16 19:12:14,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 160 transitions, 638 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-16 19:12:14,529 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 108 flow [2024-11-16 19:12:14,530 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, 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=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=108, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2024-11-16 19:12:14,532 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 6 predicate places. [2024-11-16 19:12:14,532 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 108 flow [2024-11-16 19:12:14,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 19:12:14,532 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:14,533 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 19:12:14,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:12:14,534 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:14,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:14,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2062118029, now seen corresponding path program 1 times [2024-11-16 19:12:14,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:14,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390897700] [2024-11-16 19:12:14,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:14,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:14,926 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 19:12:14,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390897700] [2024-11-16 19:12:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390897700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494712232] [2024-11-16 19:12:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:14,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:14,931 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:14,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:12:14,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:14,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:14,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:19,369 INFO L124 PetriNetUnfolderBase]: 44789/60195 cut-off events. [2024-11-16 19:12:19,370 INFO L125 PetriNetUnfolderBase]: For 8598/8598 co-relation queries the response was YES. [2024-11-16 19:12:19,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129368 conditions, 60195 events. 44789/60195 cut-off events. For 8598/8598 co-relation queries the response was YES. Maximal size of possible extension queue 1575. Compared 366714 event pairs, 9431 based on Foata normal form. 1080/61269 useless extension candidates. Maximal degree in co-relation 129353. Up to 49385 conditions per place. [2024-11-16 19:12:19,723 INFO L140 encePairwiseOnDemand]: 44/50 looper letters, 59 selfloop transitions, 3 changer transitions 65/132 dead transitions. [2024-11-16 19:12:19,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 132 transitions, 561 flow [2024-11-16 19:12:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 19:12:19,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-16 19:12:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-11-16 19:12:19,725 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5485714285714286 [2024-11-16 19:12:19,725 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 108 flow. Second operand 7 states and 192 transitions. [2024-11-16 19:12:19,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 132 transitions, 561 flow [2024-11-16 19:12:20,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 132 transitions, 539 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-11-16 19:12:20,703 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 131 flow [2024-11-16 19:12:20,703 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=131, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2024-11-16 19:12:20,704 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2024-11-16 19:12:20,704 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 131 flow [2024-11-16 19:12:20,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 19:12:20,705 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:20,705 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 19:12:20,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 19:12:20,705 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:20,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1429322513, now seen corresponding path program 1 times [2024-11-16 19:12:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857621056] [2024-11-16 19:12:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:20,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:20,861 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 19:12:20,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:20,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857621056] [2024-11-16 19:12:20,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857621056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:20,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:20,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 19:12:20,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936828677] [2024-11-16 19:12:20,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:20,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 19:12:20,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:20,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 19:12:20,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-16 19:12:20,865 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:20,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:12:20,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:20,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:20,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:24,505 INFO L124 PetriNetUnfolderBase]: 36545/49727 cut-off events. [2024-11-16 19:12:24,505 INFO L125 PetriNetUnfolderBase]: For 19285/19287 co-relation queries the response was YES. [2024-11-16 19:12:24,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115653 conditions, 49727 events. 36545/49727 cut-off events. For 19285/19287 co-relation queries the response was YES. Maximal size of possible extension queue 1356. Compared 297959 event pairs, 4829 based on Foata normal form. 1728/51413 useless extension candidates. Maximal degree in co-relation 115637. Up to 27499 conditions per place. [2024-11-16 19:12:24,815 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 84 selfloop transitions, 6 changer transitions 1/96 dead transitions. [2024-11-16 19:12:24,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 461 flow [2024-11-16 19:12:24,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 19:12:24,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-16 19:12:24,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2024-11-16 19:12:24,816 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-16 19:12:24,816 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 131 flow. Second operand 4 states and 127 transitions. [2024-11-16 19:12:24,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 461 flow [2024-11-16 19:12:24,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 96 transitions, 450 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-16 19:12:24,925 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 166 flow [2024-11-16 19:12:24,925 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-11-16 19:12:24,926 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2024-11-16 19:12:24,926 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 166 flow [2024-11-16 19:12:24,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 19:12:24,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:24,926 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] [2024-11-16 19:12:24,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 19:12:24,926 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:24,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1526755592, now seen corresponding path program 1 times [2024-11-16 19:12:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:24,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863743161] [2024-11-16 19:12:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:24,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:25,554 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 19:12:25,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:25,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863743161] [2024-11-16 19:12:25,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863743161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:25,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:25,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:12:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571526182] [2024-11-16 19:12:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:25,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 19:12:25,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:25,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 19:12:25,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-16 19:12:25,559 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:25,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 166 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 19:12:25,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:25,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:25,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:29,691 INFO L124 PetriNetUnfolderBase]: 34762/47139 cut-off events. [2024-11-16 19:12:29,691 INFO L125 PetriNetUnfolderBase]: For 25933/25935 co-relation queries the response was YES. [2024-11-16 19:12:29,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120447 conditions, 47139 events. 34762/47139 cut-off events. For 25933/25935 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 276557 event pairs, 5828 based on Foata normal form. 596/47721 useless extension candidates. Maximal degree in co-relation 120430. Up to 37647 conditions per place. [2024-11-16 19:12:29,966 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 88 selfloop transitions, 8 changer transitions 85/186 dead transitions. [2024-11-16 19:12:29,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 186 transitions, 940 flow [2024-11-16 19:12:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 19:12:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-16 19:12:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-16 19:12:29,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.528 [2024-11-16 19:12:29,968 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 166 flow. Second operand 10 states and 264 transitions. [2024-11-16 19:12:29,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 186 transitions, 940 flow [2024-11-16 19:12:29,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 186 transitions, 906 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-16 19:12:29,980 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 229 flow [2024-11-16 19:12:29,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=229, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-11-16 19:12:29,981 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 18 predicate places. [2024-11-16 19:12:29,981 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 229 flow [2024-11-16 19:12:29,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 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 19:12:29,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:29,981 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:12:29,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:12:29,981 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:29,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:29,982 INFO L85 PathProgramCache]: Analyzing trace with hash -13508182, now seen corresponding path program 1 times [2024-11-16 19:12:29,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:29,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102011559] [2024-11-16 19:12:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:29,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:30,153 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 19:12:30,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:30,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102011559] [2024-11-16 19:12:30,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102011559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:30,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:30,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-16 19:12:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127870348] [2024-11-16 19:12:30,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:30,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 19:12:30,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 19:12:30,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 19:12:30,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:30,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 229 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:12:30,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:30,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:30,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:32,987 INFO L124 PetriNetUnfolderBase]: 24196/33256 cut-off events. [2024-11-16 19:12:32,987 INFO L125 PetriNetUnfolderBase]: For 41886/41890 co-relation queries the response was YES. [2024-11-16 19:12:33,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96290 conditions, 33256 events. 24196/33256 cut-off events. For 41886/41890 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 190239 event pairs, 2640 based on Foata normal form. 1369/34591 useless extension candidates. Maximal degree in co-relation 96265. Up to 12289 conditions per place. [2024-11-16 19:12:33,210 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 121 selfloop transitions, 10 changer transitions 1/137 dead transitions. [2024-11-16 19:12:33,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 860 flow [2024-11-16 19:12:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 19:12:33,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-16 19:12:33,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-11-16 19:12:33,211 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.656 [2024-11-16 19:12:33,211 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 229 flow. Second operand 5 states and 164 transitions. [2024-11-16 19:12:33,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 860 flow [2024-11-16 19:12:33,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 815 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-11-16 19:12:33,260 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 272 flow [2024-11-16 19:12:33,260 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-11-16 19:12:33,260 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-11-16 19:12:33,260 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 272 flow [2024-11-16 19:12:33,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:12:33,261 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:33,261 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] [2024-11-16 19:12:33,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:12:33,261 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:33,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 911724727, now seen corresponding path program 1 times [2024-11-16 19:12:33,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:33,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508936770] [2024-11-16 19:12:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:33,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:33,461 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 19:12:33,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:33,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508936770] [2024-11-16 19:12:33,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508936770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:33,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 19:12:33,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965452014] [2024-11-16 19:12:33,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:33,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 19:12:33,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 19:12:33,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-16 19:12:33,463 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 50 [2024-11-16 19:12:33,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 19:12:33,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:33,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 50 [2024-11-16 19:12:33,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:34,954 INFO L124 PetriNetUnfolderBase]: 15162/20878 cut-off events. [2024-11-16 19:12:34,955 INFO L125 PetriNetUnfolderBase]: For 31910/31914 co-relation queries the response was YES. [2024-11-16 19:12:35,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63285 conditions, 20878 events. 15162/20878 cut-off events. For 31910/31914 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 111821 event pairs, 2248 based on Foata normal form. 645/21489 useless extension candidates. Maximal degree in co-relation 63261. Up to 6332 conditions per place. [2024-11-16 19:12:35,113 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 138 selfloop transitions, 14 changer transitions 1/158 dead transitions. [2024-11-16 19:12:35,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 158 transitions, 986 flow [2024-11-16 19:12:35,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:12:35,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:12:35,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-11-16 19:12:35,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6633333333333333 [2024-11-16 19:12:35,115 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 272 flow. Second operand 6 states and 199 transitions. [2024-11-16 19:12:35,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 158 transitions, 986 flow [2024-11-16 19:12:35,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 956 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-11-16 19:12:35,272 INFO L231 Difference]: Finished difference. Result has 74 places, 60 transitions, 322 flow [2024-11-16 19:12:35,273 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=322, PETRI_PLACES=74, PETRI_TRANSITIONS=60} [2024-11-16 19:12:35,273 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 16 predicate places. [2024-11-16 19:12:35,274 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 60 transitions, 322 flow [2024-11-16 19:12:35,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 19:12:35,274 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:35,274 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] [2024-11-16 19:12:35,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:12:35,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:35,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:35,274 INFO L85 PathProgramCache]: Analyzing trace with hash 259865640, now seen corresponding path program 1 times [2024-11-16 19:12:35,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:35,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855597278] [2024-11-16 19:12:35,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:35,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:12:35,759 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 19:12:35,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:12:35,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855597278] [2024-11-16 19:12:35,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855597278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:12:35,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:12:35,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 19:12:35,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669285585] [2024-11-16 19:12:35,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:12:35,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:12:35,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:12:35,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:12:35,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:12:35,765 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 50 [2024-11-16 19:12:35,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 60 transitions, 322 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 19:12:35,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:12:35,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 50 [2024-11-16 19:12:35,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:12:37,881 INFO L124 PetriNetUnfolderBase]: 19121/26325 cut-off events. [2024-11-16 19:12:37,881 INFO L125 PetriNetUnfolderBase]: For 43596/43596 co-relation queries the response was YES. [2024-11-16 19:12:38,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83700 conditions, 26325 events. 19121/26325 cut-off events. For 43596/43596 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 142897 event pairs, 4163 based on Foata normal form. 112/26434 useless extension candidates. Maximal degree in co-relation 83675. Up to 15783 conditions per place. [2024-11-16 19:12:38,074 INFO L140 encePairwiseOnDemand]: 40/50 looper letters, 115 selfloop transitions, 12 changer transitions 67/199 dead transitions. [2024-11-16 19:12:38,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 199 transitions, 1415 flow [2024-11-16 19:12:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 19:12:38,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-16 19:12:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-11-16 19:12:38,076 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-11-16 19:12:38,076 INFO L175 Difference]: Start difference. First operand has 74 places, 60 transitions, 322 flow. Second operand 8 states and 224 transitions. [2024-11-16 19:12:38,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 199 transitions, 1415 flow [2024-11-16 19:12:38,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 199 transitions, 1299 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-11-16 19:12:38,487 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 382 flow [2024-11-16 19:12:38,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=382, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-11-16 19:12:38,488 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 24 predicate places. [2024-11-16 19:12:38,488 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 382 flow [2024-11-16 19:12:38,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 19:12:38,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:12:38,488 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] [2024-11-16 19:12:38,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 19:12:38,488 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:12:38,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:12:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash 2082258902, now seen corresponding path program 2 times [2024-11-16 19:12:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:12:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61998952] [2024-11-16 19:12:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:12:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:12:38,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat