./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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/weaver/popl20-more-buffer-mult.wvr.c -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 e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:33:11,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:33:11,340 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:33:11,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:33:11,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:33:11,363 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:33:11,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:33:11,364 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:33:11,364 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:33:11,364 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:33:11,365 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:33:11,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:33:11,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:33:11,366 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:33:11,366 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:33:11,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:33:11,367 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:33:11,367 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:33:11,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:33:11,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:33:11,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:33:11,368 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:33:11,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:33:11,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:33:11,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:33:11,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:33:11,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:33:11,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:33:11,370 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:33:11,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:33:11,371 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:33:11,371 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:33:11,371 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:11,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:33:11,372 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:33:11,372 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:33:11,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:33:11,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:33:11,373 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:33:11,373 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:33:11,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:33:11,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:33:11,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-11-10 10:33:11,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:33:11,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:33:11,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:33:11,602 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:33:11,603 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:33:11,604 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-10 10:33:12,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:33:13,036 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:33:13,036 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-10 10:33:13,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd25d7851/289b05254ee441d1837ca70e4bdfd000/FLAG579a24bab [2024-11-10 10:33:13,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd25d7851/289b05254ee441d1837ca70e4bdfd000 [2024-11-10 10:33:13,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:33:13,456 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:33:13,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:13,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:33:13,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:33:13,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:13,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c36bdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13, skipping insertion in model container [2024-11-10 10:33:13,475 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:13,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:33:13,848 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/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-10 10:33:13,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:13,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:33:13,890 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/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-10 10:33:13,896 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:33:13,924 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:33:13,925 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13 WrapperNode [2024-11-10 10:33:13,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:33:13,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:13,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:33:13,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:33:13,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:13,942 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:13,991 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 290 [2024-11-10 10:33:13,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:33:13,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:33:13,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:33:13,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:33:14,001 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,004 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,031 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-10 10:33:14,032 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,032 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,038 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,038 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,043 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,044 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,046 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:33:14,047 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:33:14,047 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:33:14,047 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:33:14,048 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (1/1) ... [2024-11-10 10:33:14,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:33:14,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:33:14,088 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) [2024-11-10 10:33:14,090 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 [2024-11-10 10:33:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:33:14,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:33:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:33:14,127 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:33:14,127 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:33:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:33:14,128 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:33:14,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:33:14,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:33:14,130 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:33:14,225 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:33:14,227 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:33:14,542 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:33:14,542 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:33:14,787 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:33:14,788 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:33:14,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:14 BoogieIcfgContainer [2024-11-10 10:33:14,788 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:33:14,792 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:33:14,792 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:33:14,794 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:33:14,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:33:13" (1/3) ... [2024-11-10 10:33:14,795 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f767ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 10:33:14,795 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:33:13" (2/3) ... [2024-11-10 10:33:14,796 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f767ce7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:33:14, skipping insertion in model container [2024-11-10 10:33:14,796 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:33:14" (3/3) ... [2024-11-10 10:33:14,798 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-11-10 10:33:14,811 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:33:14,812 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:33:14,812 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:33:14,863 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:33:14,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 68 transitions, 164 flow [2024-11-10 10:33:14,953 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-11-10 10:33:14,954 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:33:14,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 64 events. 12/64 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2024-11-10 10:33:14,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 68 transitions, 164 flow [2024-11-10 10:33:14,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 63 transitions, 150 flow [2024-11-10 10:33:14,967 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:33:14,975 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;@76e8fb83, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:33:14,975 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:33:14,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:33:14,994 INFO L124 PetriNetUnfolderBase]: 12/62 cut-off events. [2024-11-10 10:33:14,994 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:33:14,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:14,995 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:14,995 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:15,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:15,000 INFO L85 PathProgramCache]: Analyzing trace with hash 522508968, now seen corresponding path program 1 times [2024-11-10 10:33:15,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:15,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103945830] [2024-11-10 10:33:15,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:15,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:15,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:15,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103945830] [2024-11-10 10:33:15,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103945830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:15,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:15,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:15,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929959197] [2024-11-10 10:33:15,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:15,207 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:33:15,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:15,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:33:15,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:33:15,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-11-10 10:33:15,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 63 transitions, 150 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-10 10:33:15,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:15,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-11-10 10:33:15,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:15,873 INFO L124 PetriNetUnfolderBase]: 3789/5299 cut-off events. [2024-11-10 10:33:15,874 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-11-10 10:33:15,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10622 conditions, 5299 events. 3789/5299 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 29602 event pairs, 2850 based on Foata normal form. 939/5702 useless extension candidates. Maximal degree in co-relation 9740. Up to 4955 conditions per place. [2024-11-10 10:33:15,911 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 36 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2024-11-10 10:33:15,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 210 flow [2024-11-10 10:33:15,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:33:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:33:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-10 10:33:15,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6764705882352942 [2024-11-10 10:33:15,924 INFO L175 Difference]: Start difference. First operand has 64 places, 63 transitions, 150 flow. Second operand 2 states and 92 transitions. [2024-11-10 10:33:15,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 210 flow [2024-11-10 10:33:15,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 57 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:33:15,937 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 122 flow [2024-11-10 10:33:15,939 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-11-10 10:33:15,944 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -7 predicate places. [2024-11-10 10:33:15,944 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 122 flow [2024-11-10 10:33:15,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-10 10:33:15,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:15,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:15,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:33:15,945 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:15,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:15,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1591444420, now seen corresponding path program 1 times [2024-11-10 10:33:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:15,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519536107] [2024-11-10 10:33:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:15,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:16,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519536107] [2024-11-10 10:33:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519536107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513889779] [2024-11-10 10:33:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:16,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:33:16,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:16,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:33:16,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:33:16,126 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-11-10 10:33:16,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-10 10:33:16,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:16,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-11-10 10:33:16,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:16,802 INFO L124 PetriNetUnfolderBase]: 5628/8448 cut-off events. [2024-11-10 10:33:16,802 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2024-11-10 10:33:16,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15977 conditions, 8448 events. 5628/8448 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 53194 event pairs, 1634 based on Foata normal form. 1/7733 useless extension candidates. Maximal degree in co-relation 15974. Up to 4718 conditions per place. [2024-11-10 10:33:16,846 INFO L140 encePairwiseOnDemand]: 64/68 looper letters, 55 selfloop transitions, 3 changer transitions 1/80 dead transitions. [2024-11-10 10:33:16,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 80 transitions, 291 flow [2024-11-10 10:33:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:33:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:33:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-10 10:33:16,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-11-10 10:33:16,850 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 122 flow. Second operand 3 states and 135 transitions. [2024-11-10 10:33:16,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 80 transitions, 291 flow [2024-11-10 10:33:16,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:33:16,854 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 141 flow [2024-11-10 10:33:16,854 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-11-10 10:33:16,854 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-11-10 10:33:16,855 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 141 flow [2024-11-10 10:33:16,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2024-11-10 10:33:16,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:16,855 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:16,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:33:16,856 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:16,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:16,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1118603978, now seen corresponding path program 1 times [2024-11-10 10:33:16,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:16,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737779505] [2024-11-10 10:33:16,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:16,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737779505] [2024-11-10 10:33:17,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737779505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:17,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:17,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:17,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822809113] [2024-11-10 10:33:17,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:17,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:33:17,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:17,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:33:17,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:33:17,010 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-11-10 10:33:17,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 141 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:33:17,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:17,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-11-10 10:33:17,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:17,719 INFO L124 PetriNetUnfolderBase]: 6878/10588 cut-off events. [2024-11-10 10:33:17,719 INFO L125 PetriNetUnfolderBase]: For 1231/1231 co-relation queries the response was YES. [2024-11-10 10:33:17,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21240 conditions, 10588 events. 6878/10588 cut-off events. For 1231/1231 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 71274 event pairs, 2262 based on Foata normal form. 216/10057 useless extension candidates. Maximal degree in co-relation 21235. Up to 6208 conditions per place. [2024-11-10 10:33:17,778 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 62 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-10 10:33:17,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 85 transitions, 335 flow [2024-11-10 10:33:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:33:17,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:33:17,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-11-10 10:33:17,779 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-11-10 10:33:17,779 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 141 flow. Second operand 3 states and 137 transitions. [2024-11-10 10:33:17,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 85 transitions, 335 flow [2024-11-10 10:33:17,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:17,783 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 152 flow [2024-11-10 10:33:17,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-11-10 10:33:17,784 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-11-10 10:33:17,784 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 152 flow [2024-11-10 10:33:17,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:33:17,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:17,784 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:17,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:33:17,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:17,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:17,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1659713000, now seen corresponding path program 1 times [2024-11-10 10:33:17,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:17,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601399255] [2024-11-10 10:33:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:17,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:17,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:33:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601399255] [2024-11-10 10:33:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601399255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:17,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:17,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:33:17,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39395267] [2024-11-10 10:33:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:17,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:33:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:17,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:33:17,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:33:17,850 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-11-10 10:33:17,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:33:17,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:17,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-11-10 10:33:17,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:18,950 INFO L124 PetriNetUnfolderBase]: 8266/13159 cut-off events. [2024-11-10 10:33:18,950 INFO L125 PetriNetUnfolderBase]: For 3088/3088 co-relation queries the response was YES. [2024-11-10 10:33:18,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26872 conditions, 13159 events. 8266/13159 cut-off events. For 3088/3088 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 94345 event pairs, 2562 based on Foata normal form. 144/12328 useless extension candidates. Maximal degree in co-relation 26866. Up to 7562 conditions per place. [2024-11-10 10:33:19,044 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 62 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-11-10 10:33:19,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 351 flow [2024-11-10 10:33:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:33:19,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:33:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-11-10 10:33:19,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6617647058823529 [2024-11-10 10:33:19,050 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 152 flow. Second operand 3 states and 135 transitions. [2024-11-10 10:33:19,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 351 flow [2024-11-10 10:33:19,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 85 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:19,054 INFO L231 Difference]: Finished difference. Result has 64 places, 61 transitions, 164 flow [2024-11-10 10:33:19,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=64, PETRI_TRANSITIONS=61} [2024-11-10 10:33:19,055 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-11-10 10:33:19,056 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 61 transitions, 164 flow [2024-11-10 10:33:19,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-10 10:33:19,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:19,056 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:19,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:33:19,056 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:19,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:19,057 INFO L85 PathProgramCache]: Analyzing trace with hash -143751964, now seen corresponding path program 1 times [2024-11-10 10:33:19,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:19,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066108254] [2024-11-10 10:33:19,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:19,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066108254] [2024-11-10 10:33:19,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066108254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:19,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:19,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:33:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61316273] [2024-11-10 10:33:19,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:33:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:33:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:33:19,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:19,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 61 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:33:19,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:19,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:19,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:20,348 INFO L124 PetriNetUnfolderBase]: 10571/17490 cut-off events. [2024-11-10 10:33:20,348 INFO L125 PetriNetUnfolderBase]: For 5572/5572 co-relation queries the response was YES. [2024-11-10 10:33:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36404 conditions, 17490 events. 10571/17490 cut-off events. For 5572/5572 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 139009 event pairs, 8764 based on Foata normal form. 254/15737 useless extension candidates. Maximal degree in co-relation 36397. Up to 10990 conditions per place. [2024-11-10 10:33:20,431 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 74 selfloop transitions, 5 changer transitions 0/98 dead transitions. [2024-11-10 10:33:20,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 419 flow [2024-11-10 10:33:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:33:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:33:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 189 transitions. [2024-11-10 10:33:20,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5558823529411765 [2024-11-10 10:33:20,433 INFO L175 Difference]: Start difference. First operand has 64 places, 61 transitions, 164 flow. Second operand 5 states and 189 transitions. [2024-11-10 10:33:20,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 419 flow [2024-11-10 10:33:20,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 98 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:20,436 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 198 flow [2024-11-10 10:33:20,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-11-10 10:33:20,437 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 6 predicate places. [2024-11-10 10:33:20,437 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 198 flow [2024-11-10 10:33:20,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:33:20,437 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:20,437 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:20,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:33:20,438 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:20,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:20,438 INFO L85 PathProgramCache]: Analyzing trace with hash -959204448, now seen corresponding path program 1 times [2024-11-10 10:33:20,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:20,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117578308] [2024-11-10 10:33:20,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:20,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117578308] [2024-11-10 10:33:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117578308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:20,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:33:20,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657099978] [2024-11-10 10:33:20,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:20,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:33:20,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:20,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:33:20,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:33:20,545 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:20,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:33:20,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:20,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:20,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:22,361 INFO L124 PetriNetUnfolderBase]: 13578/22981 cut-off events. [2024-11-10 10:33:22,361 INFO L125 PetriNetUnfolderBase]: For 7282/7282 co-relation queries the response was YES. [2024-11-10 10:33:22,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46952 conditions, 22981 events. 13578/22981 cut-off events. For 7282/7282 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 194366 event pairs, 11512 based on Foata normal form. 376/20799 useless extension candidates. Maximal degree in co-relation 46942. Up to 14206 conditions per place. [2024-11-10 10:33:22,474 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 71 selfloop transitions, 5 changer transitions 1/96 dead transitions. [2024-11-10 10:33:22,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 96 transitions, 442 flow [2024-11-10 10:33:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:33:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:33:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-11-10 10:33:22,476 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-11-10 10:33:22,476 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 198 flow. Second operand 5 states and 183 transitions. [2024-11-10 10:33:22,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 96 transitions, 442 flow [2024-11-10 10:33:22,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 96 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:22,480 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 225 flow [2024-11-10 10:33:22,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=225, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-11-10 10:33:22,481 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 12 predicate places. [2024-11-10 10:33:22,481 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 225 flow [2024-11-10 10:33:22,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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) [2024-11-10 10:33:22,481 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:22,481 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:22,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:33:22,482 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:22,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1185032269, now seen corresponding path program 1 times [2024-11-10 10:33:22,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:22,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541747525] [2024-11-10 10:33:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:22,824 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:33:22,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541747525] [2024-11-10 10:33:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541747525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:22,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:22,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:22,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385324160] [2024-11-10 10:33:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:22,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:22,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:22,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:22,841 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:22,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 225 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:22,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:22,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:25,813 INFO L124 PetriNetUnfolderBase]: 27138/41997 cut-off events. [2024-11-10 10:33:25,814 INFO L125 PetriNetUnfolderBase]: For 13504/13504 co-relation queries the response was YES. [2024-11-10 10:33:25,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89783 conditions, 41997 events. 27138/41997 cut-off events. For 13504/13504 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 342478 event pairs, 2373 based on Foata normal form. 989/41361 useless extension candidates. Maximal degree in co-relation 89770. Up to 24618 conditions per place. [2024-11-10 10:33:26,059 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 138 selfloop transitions, 12 changer transitions 4/175 dead transitions. [2024-11-10 10:33:26,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 175 transitions, 865 flow [2024-11-10 10:33:26,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:33:26,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:33:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2024-11-10 10:33:26,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6281512605042017 [2024-11-10 10:33:26,060 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 225 flow. Second operand 7 states and 299 transitions. [2024-11-10 10:33:26,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 175 transitions, 865 flow [2024-11-10 10:33:26,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 175 transitions, 862 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:33:26,069 INFO L231 Difference]: Finished difference. Result has 86 places, 79 transitions, 310 flow [2024-11-10 10:33:26,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=310, PETRI_PLACES=86, PETRI_TRANSITIONS=79} [2024-11-10 10:33:26,071 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2024-11-10 10:33:26,071 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 79 transitions, 310 flow [2024-11-10 10:33:26,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:26,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:26,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:26,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:33:26,072 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:26,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1503411731, now seen corresponding path program 2 times [2024-11-10 10:33:26,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:26,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394422246] [2024-11-10 10:33:26,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:26,369 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:26,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:26,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394422246] [2024-11-10 10:33:26,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394422246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:26,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:26,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:26,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042662103] [2024-11-10 10:33:26,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:26,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:26,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:26,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:26,384 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:26,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 79 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:26,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:26,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:26,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:30,440 INFO L124 PetriNetUnfolderBase]: 32381/50380 cut-off events. [2024-11-10 10:33:30,440 INFO L125 PetriNetUnfolderBase]: For 34491/34601 co-relation queries the response was YES. [2024-11-10 10:33:30,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124611 conditions, 50380 events. 32381/50380 cut-off events. For 34491/34601 co-relation queries the response was YES. Maximal size of possible extension queue 2390. Compared 425624 event pairs, 6159 based on Foata normal form. 270/48795 useless extension candidates. Maximal degree in co-relation 124593. Up to 29766 conditions per place. [2024-11-10 10:33:30,707 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 141 selfloop transitions, 27 changer transitions 43/232 dead transitions. [2024-11-10 10:33:30,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 232 transitions, 1308 flow [2024-11-10 10:33:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 10:33:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 10:33:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 374 transitions. [2024-11-10 10:33:30,711 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-10 10:33:30,711 INFO L175 Difference]: Start difference. First operand has 86 places, 79 transitions, 310 flow. Second operand 9 states and 374 transitions. [2024-11-10 10:33:30,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 232 transitions, 1308 flow [2024-11-10 10:33:30,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 232 transitions, 1308 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:33:30,741 INFO L231 Difference]: Finished difference. Result has 101 places, 106 transitions, 592 flow [2024-11-10 10:33:30,741 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=592, PETRI_PLACES=101, PETRI_TRANSITIONS=106} [2024-11-10 10:33:30,742 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 37 predicate places. [2024-11-10 10:33:30,742 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 106 transitions, 592 flow [2024-11-10 10:33:30,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:30,742 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:30,742 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:30,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:33:30,743 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:30,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:30,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1986451247, now seen corresponding path program 3 times [2024-11-10 10:33:30,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:30,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778572069] [2024-11-10 10:33:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:30,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778572069] [2024-11-10 10:33:31,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778572069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:31,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:31,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:31,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178558911] [2024-11-10 10:33:31,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:31,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:31,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:31,214 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:31,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 106 transitions, 592 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:31,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:31,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:31,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:36,969 INFO L124 PetriNetUnfolderBase]: 40225/62929 cut-off events. [2024-11-10 10:33:36,969 INFO L125 PetriNetUnfolderBase]: For 72306/72876 co-relation queries the response was YES. [2024-11-10 10:33:37,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172735 conditions, 62929 events. 40225/62929 cut-off events. For 72306/72876 co-relation queries the response was YES. Maximal size of possible extension queue 2917. Compared 541636 event pairs, 4505 based on Foata normal form. 1164/63123 useless extension candidates. Maximal degree in co-relation 172709. Up to 27072 conditions per place. [2024-11-10 10:33:37,569 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 188 selfloop transitions, 53 changer transitions 3/267 dead transitions. [2024-11-10 10:33:37,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 267 transitions, 1824 flow [2024-11-10 10:33:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-10 10:33:37,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-10 10:33:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2024-11-10 10:33:37,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2024-11-10 10:33:37,570 INFO L175 Difference]: Start difference. First operand has 101 places, 106 transitions, 592 flow. Second operand 8 states and 350 transitions. [2024-11-10 10:33:37,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 267 transitions, 1824 flow [2024-11-10 10:33:38,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 267 transitions, 1810 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-10 10:33:38,167 INFO L231 Difference]: Finished difference. Result has 108 places, 133 transitions, 933 flow [2024-11-10 10:33:38,167 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=933, PETRI_PLACES=108, PETRI_TRANSITIONS=133} [2024-11-10 10:33:38,168 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2024-11-10 10:33:38,168 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 133 transitions, 933 flow [2024-11-10 10:33:38,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:38,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:38,168 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:38,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:33:38,169 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:38,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:38,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1776346811, now seen corresponding path program 4 times [2024-11-10 10:33:38,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:38,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961588585] [2024-11-10 10:33:38,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:38,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:38,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:38,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961588585] [2024-11-10 10:33:38,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961588585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:38,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:38,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:38,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352049144] [2024-11-10 10:33:38,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:38,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:38,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:38,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:38,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:38,395 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 68 [2024-11-10 10:33:38,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 133 transitions, 933 flow. Second operand has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:38,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:38,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 68 [2024-11-10 10:33:38,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:33:44,786 INFO L124 PetriNetUnfolderBase]: 41779/65569 cut-off events. [2024-11-10 10:33:44,786 INFO L125 PetriNetUnfolderBase]: For 106126/106470 co-relation queries the response was YES. [2024-11-10 10:33:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195498 conditions, 65569 events. 41779/65569 cut-off events. For 106126/106470 co-relation queries the response was YES. Maximal size of possible extension queue 2942. Compared 572067 event pairs, 6119 based on Foata normal form. 320/64565 useless extension candidates. Maximal degree in co-relation 195469. Up to 46031 conditions per place. [2024-11-10 10:33:45,460 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 125 selfloop transitions, 47 changer transitions 23/218 dead transitions. [2024-11-10 10:33:45,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 218 transitions, 1725 flow [2024-11-10 10:33:45,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:33:45,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:33:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-11-10 10:33:45,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-10 10:33:45,461 INFO L175 Difference]: Start difference. First operand has 108 places, 133 transitions, 933 flow. Second operand 6 states and 255 transitions. [2024-11-10 10:33:45,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 218 transitions, 1725 flow [2024-11-10 10:33:45,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 218 transitions, 1707 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:33:45,868 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1170 flow [2024-11-10 10:33:45,869 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1170, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-11-10 10:33:45,870 INFO L277 CegarLoopForPetriNet]: 64 programPoint places, 51 predicate places. [2024-11-10 10:33:45,870 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1170 flow [2024-11-10 10:33:45,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.333333333333332) internal successors, (170), 6 states have internal predecessors, (170), 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) [2024-11-10 10:33:45,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:33:45,872 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:33:45,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:33:45,873 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:33:45,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:33:45,873 INFO L85 PathProgramCache]: Analyzing trace with hash -470281261, now seen corresponding path program 5 times [2024-11-10 10:33:45,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:33:45,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034260] [2024-11-10 10:33:45,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:33:45,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:33:45,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:33:46,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:33:46,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:33:46,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034260] [2024-11-10 10:33:46,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:33:46,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:33:46,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:33:46,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632777515] [2024-11-10 10:33:46,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:33:46,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:33:46,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:33:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:33:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:33:46,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2024-11-10 10:33:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 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) [2024-11-10 10:33:46,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:33:46,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2024-11-10 10:33:46,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand