./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-prod-cons3.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-prod-cons3.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 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:35:48,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:35:48,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:35:48,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:35:48,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:35:48,278 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:35:48,279 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:35:48,279 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:35:48,280 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:35:48,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:35:48,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:35:48,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:35:48,282 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:35:48,282 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:35:48,282 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:35:48,283 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:35:48,283 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:35:48,283 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:35:48,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:35:48,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:35:48,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:35:48,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:35:48,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:35:48,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:35:48,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:35:48,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:35:48,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:35:48,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:35:48,288 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:35:48,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:35:48,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:35:48,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:35:48,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:35:48,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:35:48,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:35:48,289 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:35:48,289 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:35:48,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:35:48,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:35:48,290 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:35:48,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:35:48,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:35:48,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 41874b69ed787f1d4b0fd199a95bb437bfc8aab0f734c194621d2ef33cc65cc9 [2024-11-10 10:35:48,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:35:48,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:35:48,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:35:48,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:35:48,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:35:48,485 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-11-10 10:35:49,818 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:35:50,022 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:35:50,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-prod-cons3.wvr.c [2024-11-10 10:35:50,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a65ca81/bb5a904f30774a86af1a8f40ec5af36c/FLAGcaf080654 [2024-11-10 10:35:50,048 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a65ca81/bb5a904f30774a86af1a8f40ec5af36c [2024-11-10 10:35:50,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:35:50,053 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:35:50,056 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:35:50,056 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:35:50,061 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:35:50,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,063 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f5c3b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50, skipping insertion in model container [2024-11-10 10:35:50,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:35:50,283 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-prod-cons3.wvr.c[4059,4072] [2024-11-10 10:35:50,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:35:50,302 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:35:50,326 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-prod-cons3.wvr.c[4059,4072] [2024-11-10 10:35:50,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:35:50,348 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:35:50,348 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50 WrapperNode [2024-11-10 10:35:50,348 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:35:50,349 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:35:50,349 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:35:50,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:35:50,354 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,360 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,382 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 251 [2024-11-10 10:35:50,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:35:50,384 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:35:50,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:35:50,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:35:50,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,414 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 10:35:50,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,426 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:35:50,434 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:35:50,434 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:35:50,434 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:35:50,435 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (1/1) ... [2024-11-10 10:35:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:35:50,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:35:50,460 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 10:35:50,465 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 10:35:50,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:35:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:35:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:35:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:35:50,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:35:50,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:35:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:35:50,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:35:50,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:35:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:35:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:35:50,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:35:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:35:50,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:35:50,518 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 10:35:50,631 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:35:50,633 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:35:51,032 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:35:51,032 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:35:51,247 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:35:51,247 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:35:51,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:35:51 BoogieIcfgContainer [2024-11-10 10:35:51,248 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:35:51,250 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:35:51,251 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:35:51,254 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:35:51,254 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:35:50" (1/3) ... [2024-11-10 10:35:51,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b07025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:35:51, skipping insertion in model container [2024-11-10 10:35:51,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:35:50" (2/3) ... [2024-11-10 10:35:51,256 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b07025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:35:51, skipping insertion in model container [2024-11-10 10:35:51,256 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:35:51" (3/3) ... [2024-11-10 10:35:51,257 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2024-11-10 10:35:51,272 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:35:51,272 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:35:51,273 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:35:51,323 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:35:51,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 67 places, 65 transitions, 158 flow [2024-11-10 10:35:51,394 INFO L124 PetriNetUnfolderBase]: 11/61 cut-off events. [2024-11-10 10:35:51,395 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:35:51,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 61 events. 11/61 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 55. Up to 3 conditions per place. [2024-11-10 10:35:51,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 67 places, 65 transitions, 158 flow [2024-11-10 10:35:51,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 60 transitions, 144 flow [2024-11-10 10:35:51,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:35:51,420 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;@72f561d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:35:51,420 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:35:51,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:35:51,444 INFO L124 PetriNetUnfolderBase]: 11/59 cut-off events. [2024-11-10 10:35:51,444 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:35:51,445 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:51,445 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:35:51,446 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 10:35:51,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash 529020908, now seen corresponding path program 1 times [2024-11-10 10:35:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:51,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280359801] [2024-11-10 10:35:51,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:51,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:35:51,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:51,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280359801] [2024-11-10 10:35:51,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280359801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:51,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:51,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:35:51,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105649553] [2024-11-10 10:35:51,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:51,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:35:51,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:51,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:35:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:35:51,722 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-10 10:35:51,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 10:35:51,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:51,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-10 10:35:51,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:52,612 INFO L124 PetriNetUnfolderBase]: 5773/8093 cut-off events. [2024-11-10 10:35:52,613 INFO L125 PetriNetUnfolderBase]: For 519/519 co-relation queries the response was YES. [2024-11-10 10:35:52,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16432 conditions, 8093 events. 5773/8093 cut-off events. For 519/519 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 45773 event pairs, 4845 based on Foata normal form. 926/8538 useless extension candidates. Maximal degree in co-relation 15225. Up to 7684 conditions per place. [2024-11-10 10:35:52,665 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 38 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2024-11-10 10:35:52,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 210 flow [2024-11-10 10:35:52,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:35:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:35:52,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 85 transitions. [2024-11-10 10:35:52,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-11-10 10:35:52,677 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 144 flow. Second operand 2 states and 85 transitions. [2024-11-10 10:35:52,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 210 flow [2024-11-10 10:35:52,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 194 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:35:52,693 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 118 flow [2024-11-10 10:35:52,695 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2024-11-10 10:35:52,698 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2024-11-10 10:35:52,698 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 118 flow [2024-11-10 10:35:52,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 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 10:35:52,698 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:52,698 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] [2024-11-10 10:35:52,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:35:52,699 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 10:35:52,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:52,699 INFO L85 PathProgramCache]: Analyzing trace with hash -311695545, now seen corresponding path program 1 times [2024-11-10 10:35:52,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:52,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896514230] [2024-11-10 10:35:52,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:52,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:52,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:53,137 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 10:35:53,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:53,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896514230] [2024-11-10 10:35:53,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896514230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:53,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:53,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:35:53,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655041799] [2024-11-10 10:35:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:53,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:35:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:53,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:35:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:35:53,144 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-10 10:35:53,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 10:35:53,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:53,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-10 10:35:53,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:54,407 INFO L124 PetriNetUnfolderBase]: 10416/15191 cut-off events. [2024-11-10 10:35:54,407 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2024-11-10 10:35:54,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29419 conditions, 15191 events. 10416/15191 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 96859 event pairs, 4008 based on Foata normal form. 2/14408 useless extension candidates. Maximal degree in co-relation 29416. Up to 6134 conditions per place. [2024-11-10 10:35:54,479 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 77 selfloop transitions, 4 changer transitions 3/101 dead transitions. [2024-11-10 10:35:54,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 101 transitions, 387 flow [2024-11-10 10:35:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:35:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:35:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-11-10 10:35:54,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5876923076923077 [2024-11-10 10:35:54,482 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 118 flow. Second operand 5 states and 191 transitions. [2024-11-10 10:35:54,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 101 transitions, 387 flow [2024-11-10 10:35:54,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 387 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:35:54,487 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 142 flow [2024-11-10 10:35:54,487 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-10 10:35:54,488 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-11-10 10:35:54,488 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 142 flow [2024-11-10 10:35:54,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 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 10:35:54,488 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:54,488 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] [2024-11-10 10:35:54,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:35:54,489 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 10:35:54,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash -933240759, now seen corresponding path program 1 times [2024-11-10 10:35:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:54,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216359500] [2024-11-10 10:35:54,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:54,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:54,570 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 10:35:54,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:54,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216359500] [2024-11-10 10:35:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216359500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:35:54,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724924006] [2024-11-10 10:35:54,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:54,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:35:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:54,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:35:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:35:54,573 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-10 10:35:54,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:54,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:54,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-10 10:35:54,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:55,743 INFO L124 PetriNetUnfolderBase]: 10026/15096 cut-off events. [2024-11-10 10:35:55,743 INFO L125 PetriNetUnfolderBase]: For 1397/1397 co-relation queries the response was YES. [2024-11-10 10:35:55,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30644 conditions, 15096 events. 10026/15096 cut-off events. For 1397/1397 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 99153 event pairs, 3794 based on Foata normal form. 108/14300 useless extension candidates. Maximal degree in co-relation 30638. Up to 10102 conditions per place. [2024-11-10 10:35:55,809 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 57 selfloop transitions, 2 changer transitions 3/79 dead transitions. [2024-11-10 10:35:55,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 79 transitions, 318 flow [2024-11-10 10:35:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:35:55,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:35:55,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-10 10:35:55,811 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358974358974359 [2024-11-10 10:35:55,811 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 142 flow. Second operand 3 states and 124 transitions. [2024-11-10 10:35:55,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 79 transitions, 318 flow [2024-11-10 10:35:55,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 79 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:35:55,814 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 150 flow [2024-11-10 10:35:55,815 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-11-10 10:35:55,815 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2024-11-10 10:35:55,815 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 150 flow [2024-11-10 10:35:55,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:35:55,816 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:55,816 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] [2024-11-10 10:35:55,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:35:55,816 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 10:35:55,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 674315436, now seen corresponding path program 1 times [2024-11-10 10:35:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713965587] [2024-11-10 10:35:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:55,880 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 10:35:55,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:55,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713965587] [2024-11-10 10:35:55,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713965587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:55,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:55,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:35:55,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086895946] [2024-11-10 10:35:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:55,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:35:55,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:35:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:35:55,884 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-10 10:35:55,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 10:35:55,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:55,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-10 10:35:55,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:57,040 INFO L124 PetriNetUnfolderBase]: 9831/15006 cut-off events. [2024-11-10 10:35:57,040 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2024-11-10 10:35:57,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31014 conditions, 15006 events. 9831/15006 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 96612 event pairs, 4322 based on Foata normal form. 128/14220 useless extension candidates. Maximal degree in co-relation 31007. Up to 11079 conditions per place. [2024-11-10 10:35:57,104 INFO L140 encePairwiseOnDemand]: 62/65 looper letters, 56 selfloop transitions, 2 changer transitions 5/80 dead transitions. [2024-11-10 10:35:57,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 80 transitions, 329 flow [2024-11-10 10:35:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:35:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:35:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-11-10 10:35:57,110 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358974358974359 [2024-11-10 10:35:57,110 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 150 flow. Second operand 3 states and 124 transitions. [2024-11-10 10:35:57,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 80 transitions, 329 flow [2024-11-10 10:35:57,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 80 transitions, 327 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:35:57,122 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 160 flow [2024-11-10 10:35:57,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2024-11-10 10:35:57,127 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2024-11-10 10:35:57,127 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 160 flow [2024-11-10 10:35:57,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 10:35:57,128 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:57,128 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, 1, 1, 1] [2024-11-10 10:35:57,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:35:57,129 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 10:35:57,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -489015612, now seen corresponding path program 1 times [2024-11-10 10:35:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659667467] [2024-11-10 10:35:57,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:57,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:57,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:57,334 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 10:35:57,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:57,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659667467] [2024-11-10 10:35:57,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659667467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:57,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:57,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:35:57,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638456064] [2024-11-10 10:35:57,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:57,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:35:57,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:57,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:35:57,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:35:57,342 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-10 10:35:57,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 10:35:57,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:57,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-10 10:35:57,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:35:58,641 INFO L124 PetriNetUnfolderBase]: 11180/17189 cut-off events. [2024-11-10 10:35:58,641 INFO L125 PetriNetUnfolderBase]: For 3554/3565 co-relation queries the response was YES. [2024-11-10 10:35:58,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36749 conditions, 17189 events. 11180/17189 cut-off events. For 3554/3565 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 114666 event pairs, 9793 based on Foata normal form. 137/16146 useless extension candidates. Maximal degree in co-relation 36741. Up to 13096 conditions per place. [2024-11-10 10:35:58,700 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 43 selfloop transitions, 2 changer transitions 31/91 dead transitions. [2024-11-10 10:35:58,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 390 flow [2024-11-10 10:35:58,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:35:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:35:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-11-10 10:35:58,702 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5169230769230769 [2024-11-10 10:35:58,702 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 160 flow. Second operand 5 states and 168 transitions. [2024-11-10 10:35:58,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 390 flow [2024-11-10 10:35:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:35:58,710 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 176 flow [2024-11-10 10:35:58,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=63, 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=5, PETRI_FLOW=176, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2024-11-10 10:35:58,711 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 8 predicate places. [2024-11-10 10:35:58,711 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 176 flow [2024-11-10 10:35:58,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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 10:35:58,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:35:58,712 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 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, 1, 1, 1] [2024-11-10 10:35:58,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:35:58,712 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 10:35:58,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:35:58,712 INFO L85 PathProgramCache]: Analyzing trace with hash 314413866, now seen corresponding path program 1 times [2024-11-10 10:35:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:35:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762654061] [2024-11-10 10:35:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:35:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:35:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:35:58,807 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:35:58,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:35:58,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762654061] [2024-11-10 10:35:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762654061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:35:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:35:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:35:58,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781226931] [2024-11-10 10:35:58,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:35:58,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:35:58,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:35:58,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:35:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:35:58,814 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-10 10:35:58,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 10:35:58,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:35:58,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-10 10:35:58,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:00,303 INFO L124 PetriNetUnfolderBase]: 13392/20768 cut-off events. [2024-11-10 10:36:00,304 INFO L125 PetriNetUnfolderBase]: For 4782/4793 co-relation queries the response was YES. [2024-11-10 10:36:00,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44065 conditions, 20768 events. 13392/20768 cut-off events. For 4782/4793 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 145188 event pairs, 11703 based on Foata normal form. 148/19297 useless extension candidates. Maximal degree in co-relation 44054. Up to 13097 conditions per place. [2024-11-10 10:36:00,406 INFO L140 encePairwiseOnDemand]: 60/65 looper letters, 44 selfloop transitions, 2 changer transitions 29/90 dead transitions. [2024-11-10 10:36:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 90 transitions, 410 flow [2024-11-10 10:36:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:36:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:36:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-11-10 10:36:00,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5076923076923077 [2024-11-10 10:36:00,408 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 176 flow. Second operand 5 states and 165 transitions. [2024-11-10 10:36:00,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 90 transitions, 410 flow [2024-11-10 10:36:00,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 90 transitions, 396 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-10 10:36:00,416 INFO L231 Difference]: Finished difference. Result has 72 places, 61 transitions, 184 flow [2024-11-10 10:36:00,417 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=5, PETRI_FLOW=184, PETRI_PLACES=72, PETRI_TRANSITIONS=61} [2024-11-10 10:36:00,417 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 10 predicate places. [2024-11-10 10:36:00,417 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 61 transitions, 184 flow [2024-11-10 10:36:00,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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 10:36:00,418 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:00,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1] [2024-11-10 10:36:00,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:36:00,418 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 10:36:00,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:00,418 INFO L85 PathProgramCache]: Analyzing trace with hash 89147801, now seen corresponding path program 1 times [2024-11-10 10:36:00,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:00,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240440955] [2024-11-10 10:36:00,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:00,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:00,939 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:00,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240440955] [2024-11-10 10:36:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240440955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:00,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:36:00,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175779446] [2024-11-10 10:36:00,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:00,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:00,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:00,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 65 [2024-11-10 10:36:00,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 61 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 10:36:00,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:00,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 65 [2024-11-10 10:36:00,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:04,117 INFO L124 PetriNetUnfolderBase]: 30371/44922 cut-off events. [2024-11-10 10:36:04,118 INFO L125 PetriNetUnfolderBase]: For 9271/9271 co-relation queries the response was YES. [2024-11-10 10:36:04,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96828 conditions, 44922 events. 30371/44922 cut-off events. For 9271/9271 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 314038 event pairs, 3891 based on Foata normal form. 972/44739 useless extension candidates. Maximal degree in co-relation 96816. Up to 11303 conditions per place. [2024-11-10 10:36:04,326 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 116 selfloop transitions, 10 changer transitions 53/194 dead transitions. [2024-11-10 10:36:04,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 194 transitions, 929 flow [2024-11-10 10:36:04,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:36:04,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:36:04,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-11-10 10:36:04,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6527472527472528 [2024-11-10 10:36:04,328 INFO L175 Difference]: Start difference. First operand has 72 places, 61 transitions, 184 flow. Second operand 7 states and 297 transitions. [2024-11-10 10:36:04,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 194 transitions, 929 flow [2024-11-10 10:36:04,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 194 transitions, 913 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-10 10:36:04,337 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 240 flow [2024-11-10 10:36:04,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-10 10:36:04,337 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 16 predicate places. [2024-11-10 10:36:04,338 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 240 flow [2024-11-10 10:36:04,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 10:36:04,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:04,338 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1] [2024-11-10 10:36:04,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:36:04,338 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 10:36:04,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash -596948729, now seen corresponding path program 2 times [2024-11-10 10:36:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:04,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389621686] [2024-11-10 10:36:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:04,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:04,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389621686] [2024-11-10 10:36:04,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389621686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:04,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837059307] [2024-11-10 10:36:04,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:36:04,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:04,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:04,565 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:04,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:36:04,670 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:36:04,670 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:36:04,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:36:04,676 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:36:04,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:04,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 10:36:04,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837059307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:36:04,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:36:04,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-10 10:36:04,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960317993] [2024-11-10 10:36:04,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:36:04,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-10 10:36:04,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:04,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-10 10:36:04,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:36:04,891 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 65 [2024-11-10 10:36:04,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 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 10:36:04,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:04,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 65 [2024-11-10 10:36:04,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:07,355 INFO L124 PetriNetUnfolderBase]: 16391/23787 cut-off events. [2024-11-10 10:36:07,355 INFO L125 PetriNetUnfolderBase]: For 12691/12691 co-relation queries the response was YES. [2024-11-10 10:36:07,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57649 conditions, 23787 events. 16391/23787 cut-off events. For 12691/12691 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 146091 event pairs, 217 based on Foata normal form. 1605/25376 useless extension candidates. Maximal degree in co-relation 57634. Up to 2293 conditions per place. [2024-11-10 10:36:07,490 INFO L140 encePairwiseOnDemand]: 53/65 looper letters, 335 selfloop transitions, 58 changer transitions 0/405 dead transitions. [2024-11-10 10:36:07,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 405 transitions, 2078 flow [2024-11-10 10:36:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-10 10:36:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-10 10:36:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 836 transitions. [2024-11-10 10:36:07,497 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47635327635327634 [2024-11-10 10:36:07,497 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 240 flow. Second operand 27 states and 836 transitions. [2024-11-10 10:36:07,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 405 transitions, 2078 flow [2024-11-10 10:36:07,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 405 transitions, 1973 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-11-10 10:36:07,519 INFO L231 Difference]: Finished difference. Result has 123 places, 116 transitions, 662 flow [2024-11-10 10:36:07,520 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=662, PETRI_PLACES=123, PETRI_TRANSITIONS=116} [2024-11-10 10:36:07,520 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 61 predicate places. [2024-11-10 10:36:07,520 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 662 flow [2024-11-10 10:36:07,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 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 10:36:07,521 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:07,521 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 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, 1, 1, 1] [2024-11-10 10:36:07,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:36:07,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:07,727 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 10:36:07,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:07,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1030301995, now seen corresponding path program 3 times [2024-11-10 10:36:07,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:07,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83049011] [2024-11-10 10:36:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:07,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:09,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:09,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83049011] [2024-11-10 10:36:09,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83049011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:09,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341748268] [2024-11-10 10:36:09,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:36:09,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:09,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:09,261 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:09,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:36:09,381 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-10 10:36:09,381 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:36:09,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-10 10:36:09,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:09,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-10 10:36:10,235 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:36:10,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2024-11-10 10:36:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:36:10,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:11,689 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:36:11,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 150 [2024-11-10 10:36:11,717 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:36:11,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-11-10 10:36:11,888 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 10:36:11,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 130 treesize of output 168 [2024-11-10 10:36:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:36:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341748268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:36:12,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:36:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 45 [2024-11-10 10:36:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566295590] [2024-11-10 10:36:12,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:36:12,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-10 10:36:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:12,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-10 10:36:12,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=1854, Unknown=0, NotChecked=0, Total=2070 [2024-11-10 10:36:12,321 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 65 [2024-11-10 10:36:12,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 662 flow. Second operand has 46 states, 46 states have (on average 17.869565217391305) internal successors, (822), 46 states have internal predecessors, (822), 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 10:36:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 65 [2024-11-10 10:36:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:01,578 INFO L124 PetriNetUnfolderBase]: 114121/167176 cut-off events. [2024-11-10 10:37:01,579 INFO L125 PetriNetUnfolderBase]: For 668447/672491 co-relation queries the response was YES. [2024-11-10 10:37:03,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 549624 conditions, 167176 events. 114121/167176 cut-off events. For 668447/672491 co-relation queries the response was YES. Maximal size of possible extension queue 5057. Compared 1290958 event pairs, 10001 based on Foata normal form. 517/161653 useless extension candidates. Maximal degree in co-relation 549590. Up to 17298 conditions per place. [2024-11-10 10:37:03,675 INFO L140 encePairwiseOnDemand]: 45/65 looper letters, 1192 selfloop transitions, 272 changer transitions 503/1984 dead transitions. [2024-11-10 10:37:03,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1984 transitions, 13816 flow [2024-11-10 10:37:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-10 10:37:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2024-11-10 10:37:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 3036 transitions. [2024-11-10 10:37:03,685 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43652048885693745 [2024-11-10 10:37:03,685 INFO L175 Difference]: Start difference. First operand has 123 places, 116 transitions, 662 flow. Second operand 107 states and 3036 transitions. [2024-11-10 10:37:03,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1984 transitions, 13816 flow [2024-11-10 10:37:09,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 1984 transitions, 13429 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:37:09,680 INFO L231 Difference]: Finished difference. Result has 291 places, 425 transitions, 2980 flow [2024-11-10 10:37:09,681 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=2980, PETRI_PLACES=291, PETRI_TRANSITIONS=425} [2024-11-10 10:37:09,681 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, 229 predicate places. [2024-11-10 10:37:09,681 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 425 transitions, 2980 flow [2024-11-10 10:37:09,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 17.869565217391305) internal successors, (822), 46 states have internal predecessors, (822), 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 10:37:09,682 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:09,682 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2024-11-10 10:37:09,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 10:37:09,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-10 10:37:09,887 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 10:37:09,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1645334621, now seen corresponding path program 4 times [2024-11-10 10:37:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570765027] [2024-11-10 10:37:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:09,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:37:10,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570765027] [2024-11-10 10:37:10,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570765027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:37:10,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455408857] [2024-11-10 10:37:10,038 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-10 10:37:10,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:37:10,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:37:10,040 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:37:10,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:37:10,151 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-10 10:37:10,151 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:37:10,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 10:37:10,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:37:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-10 10:37:10,224 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 10:37:10,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455408857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:10,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 10:37:10,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-10 10:37:10,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312053427] [2024-11-10 10:37:10,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:10,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:37:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:10,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:37:10,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-10 10:37:10,226 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 65 [2024-11-10 10:37:10,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 425 transitions, 2980 flow. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 10:37:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 65 [2024-11-10 10:37:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand