./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:52:24,040 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:52:24,091 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:52:24,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:52:24,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:52:24,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:52:24,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:52:24,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:52:24,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:52:24,140 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:52:24,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:52:24,140 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:52:24,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:52:24,141 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:52:24,141 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:52:24,141 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:52:24,141 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:52:24,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:52:24,142 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:52:24,142 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:52:24,142 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:52:24,142 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:52:24,143 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:52:24,144 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:52:24,144 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:52:24,144 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:52:24,144 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:52:24,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:24,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:52:24,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:52:24,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:52:24,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:52:24,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613bf9314e4e3fb6e64527ec38c7e6b39400e524de37a5103e9f06d9db406d3d [2024-11-19 01:52:24,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:52:24,371 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:52:24,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:52:24,375 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:52:24,375 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:52:24,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-19 01:52:25,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:52:25,805 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:52:25,806 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2024-11-19 01:52:25,812 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f227821d/2b4c1ad56e5d49b38d0981309366ae61/FLAG3432c2351 [2024-11-19 01:52:26,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f227821d/2b4c1ad56e5d49b38d0981309366ae61 [2024-11-19 01:52:26,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:52:26,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:52:26,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:26,212 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:52:26,216 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:52:26,216 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,217 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@272ff0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26, skipping insertion in model container [2024-11-19 01:52:26,217 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,238 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:52:26,426 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-11-19 01:52:26,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:26,448 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:52:26,468 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2896,2909] [2024-11-19 01:52:26,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:52:26,493 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:52:26,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26 WrapperNode [2024-11-19 01:52:26,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:52:26,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:26,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:52:26,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:52:26,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,509 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,529 INFO L138 Inliner]: procedures = 24, calls = 29, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 159 [2024-11-19 01:52:26,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:52:26,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:52:26,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:52:26,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:52:26,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,542 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,555 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-19 01:52:26,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,564 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:52:26,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:52:26,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:52:26,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:52:26,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (1/1) ... [2024-11-19 01:52:26,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:52:26,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:26,601 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) [2024-11-19 01:52:26,604 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 [2024-11-19 01:52:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:52:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:52:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:52:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:52:26,648 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:52:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:52:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:52:26,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:52:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:52:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:52:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:52:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:52:26,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:52:26,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:52:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:52:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:52:26,652 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-19 01:52:26,771 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:52:26,773 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:52:27,072 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:52:27,074 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:52:27,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:52:27,273 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-19 01:52:27,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:27 BoogieIcfgContainer [2024-11-19 01:52:27,273 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:52:27,275 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:52:27,275 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:52:27,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:52:27,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:52:26" (1/3) ... [2024-11-19 01:52:27,279 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a406bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:27, skipping insertion in model container [2024-11-19 01:52:27,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:52:26" (2/3) ... [2024-11-19 01:52:27,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a406bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:52:27, skipping insertion in model container [2024-11-19 01:52:27,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:52:27" (3/3) ... [2024-11-19 01:52:27,281 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2024-11-19 01:52:27,296 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:52:27,297 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:52:27,297 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:52:27,331 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-19 01:52:27,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-11-19 01:52:27,388 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-11-19 01:52:27,388 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:52:27,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 2 conditions per place. [2024-11-19 01:52:27,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-11-19 01:52:27,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-11-19 01:52:27,401 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:52:27,406 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;@11fe5f3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:52:27,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 01:52:27,423 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:52:27,423 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-11-19 01:52:27,424 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-19 01:52:27,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:27,425 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:27,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:27,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:27,430 INFO L85 PathProgramCache]: Analyzing trace with hash 2097850719, now seen corresponding path program 1 times [2024-11-19 01:52:27,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:27,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88692204] [2024-11-19 01:52:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:27,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:27,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88692204] [2024-11-19 01:52:27,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88692204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:27,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:27,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:27,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410546552] [2024-11-19 01:52:27,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:27,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:52:27,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:52:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:52:27,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 01:52:27,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-19 01:52:27,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:27,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 01:52:27,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:27,770 INFO L124 PetriNetUnfolderBase]: 108/208 cut-off events. [2024-11-19 01:52:27,772 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-19 01:52:27,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 208 events. 108/208 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 678 event pairs, 83 based on Foata normal form. 13/202 useless extension candidates. Maximal degree in co-relation 366. Up to 178 conditions per place. [2024-11-19 01:52:27,778 INFO L140 encePairwiseOnDemand]: 28/29 looper letters, 20 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2024-11-19 01:52:27,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 25 transitions, 102 flow [2024-11-19 01:52:27,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:52:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-19 01:52:27,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 35 transitions. [2024-11-19 01:52:27,788 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.603448275862069 [2024-11-19 01:52:27,801 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 2 states and 35 transitions. [2024-11-19 01:52:27,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 25 transitions, 102 flow [2024-11-19 01:52:27,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-19 01:52:27,807 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 54 flow [2024-11-19 01:52:27,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-19 01:52:27,812 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-19 01:52:27,812 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 54 flow [2024-11-19 01:52:27,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 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) [2024-11-19 01:52:27,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:27,813 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:27,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:52:27,814 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:27,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:27,815 INFO L85 PathProgramCache]: Analyzing trace with hash 702721458, now seen corresponding path program 1 times [2024-11-19 01:52:27,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:27,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700201859] [2024-11-19 01:52:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:27,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:28,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700201859] [2024-11-19 01:52:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700201859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:28,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:28,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:52:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809121200] [2024-11-19 01:52:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:28,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:52:28,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:28,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:52:28,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:52:28,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 01:52:28,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-19 01:52:28,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:28,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 01:52:28,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:28,071 INFO L124 PetriNetUnfolderBase]: 116/226 cut-off events. [2024-11-19 01:52:28,071 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-19 01:52:28,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 226 events. 116/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 702 event pairs, 34 based on Foata normal form. 3/216 useless extension candidates. Maximal degree in co-relation 427. Up to 159 conditions per place. [2024-11-19 01:52:28,075 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 24 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-19 01:52:28,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 123 flow [2024-11-19 01:52:28,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:52:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:52:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-11-19 01:52:28,078 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-11-19 01:52:28,078 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 54 flow. Second operand 3 states and 49 transitions. [2024-11-19 01:52:28,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 123 flow [2024-11-19 01:52:28,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 123 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:52:28,080 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 73 flow [2024-11-19 01:52:28,082 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2024-11-19 01:52:28,083 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2024-11-19 01:52:28,083 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 73 flow [2024-11-19 01:52:28,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-11-19 01:52:28,083 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:28,084 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:28,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:52:28,084 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:28,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:28,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1414017828, now seen corresponding path program 2 times [2024-11-19 01:52:28,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:28,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083898280] [2024-11-19 01:52:28,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:28,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:28,111 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:52:28,111 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:28,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083898280] [2024-11-19 01:52:28,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083898280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:28,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:28,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:52:28,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816360474] [2024-11-19 01:52:28,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:28,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:28,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:52:28,259 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 01:52:28,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 01:52:28,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:28,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 01:52:28,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:28,351 INFO L124 PetriNetUnfolderBase]: 129/267 cut-off events. [2024-11-19 01:52:28,351 INFO L125 PetriNetUnfolderBase]: For 47/49 co-relation queries the response was YES. [2024-11-19 01:52:28,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 267 events. 129/267 cut-off events. For 47/49 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 934 event pairs, 93 based on Foata normal form. 11/264 useless extension candidates. Maximal degree in co-relation 565. Up to 193 conditions per place. [2024-11-19 01:52:28,356 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 21 selfloop transitions, 2 changer transitions 8/36 dead transitions. [2024-11-19 01:52:28,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 36 transitions, 155 flow [2024-11-19 01:52:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:28,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:28,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 59 transitions. [2024-11-19 01:52:28,357 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5086206896551724 [2024-11-19 01:52:28,358 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 73 flow. Second operand 4 states and 59 transitions. [2024-11-19 01:52:28,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 36 transitions, 155 flow [2024-11-19 01:52:28,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 36 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:52:28,360 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 86 flow [2024-11-19 01:52:28,361 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2024-11-19 01:52:28,361 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-11-19 01:52:28,361 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 86 flow [2024-11-19 01:52:28,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2024-11-19 01:52:28,361 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:28,362 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:28,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:52:28,362 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:28,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:28,362 INFO L85 PathProgramCache]: Analyzing trace with hash 453692084, now seen corresponding path program 1 times [2024-11-19 01:52:28,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:28,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982163705] [2024-11-19 01:52:28,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:28,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:28,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:28,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:28,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982163705] [2024-11-19 01:52:28,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982163705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:28,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:28,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:28,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399649544] [2024-11-19 01:52:28,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:28,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:28,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:28,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:28,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:28,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:28,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 86 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:28,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:28,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:28,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:29,165 INFO L124 PetriNetUnfolderBase]: 171/334 cut-off events. [2024-11-19 01:52:29,167 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-19 01:52:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 334 events. 171/334 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1255 event pairs, 10 based on Foata normal form. 1/334 useless extension candidates. Maximal degree in co-relation 727. Up to 199 conditions per place. [2024-11-19 01:52:29,171 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 42 selfloop transitions, 13 changer transitions 5/64 dead transitions. [2024-11-19 01:52:29,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 64 transitions, 299 flow [2024-11-19 01:52:29,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-19 01:52:29,174 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-19 01:52:29,174 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 86 flow. Second operand 10 states and 120 transitions. [2024-11-19 01:52:29,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 64 transitions, 299 flow [2024-11-19 01:52:29,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 64 transitions, 289 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-19 01:52:29,179 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 152 flow [2024-11-19 01:52:29,180 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-11-19 01:52:29,180 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2024-11-19 01:52:29,181 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 152 flow [2024-11-19 01:52:29,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:29,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:29,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:29,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:52:29,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:29,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:29,183 INFO L85 PathProgramCache]: Analyzing trace with hash -563805100, now seen corresponding path program 2 times [2024-11-19 01:52:29,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:29,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561767164] [2024-11-19 01:52:29,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:29,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:29,200 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:52:29,200 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:29,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561767164] [2024-11-19 01:52:29,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561767164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:29,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:29,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262974800] [2024-11-19 01:52:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:29,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:29,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:29,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 152 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:29,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:29,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:29,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:29,768 INFO L124 PetriNetUnfolderBase]: 193/388 cut-off events. [2024-11-19 01:52:29,769 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2024-11-19 01:52:29,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 388 events. 193/388 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1629 event pairs, 24 based on Foata normal form. 1/388 useless extension candidates. Maximal degree in co-relation 1051. Up to 226 conditions per place. [2024-11-19 01:52:29,772 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 44 selfloop transitions, 20 changer transitions 5/73 dead transitions. [2024-11-19 01:52:29,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 428 flow [2024-11-19 01:52:29,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-11-19 01:52:29,776 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4241379310344828 [2024-11-19 01:52:29,776 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 152 flow. Second operand 10 states and 123 transitions. [2024-11-19 01:52:29,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 428 flow [2024-11-19 01:52:29,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 419 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:29,780 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 274 flow [2024-11-19 01:52:29,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=274, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-19 01:52:29,782 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-11-19 01:52:29,782 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 274 flow [2024-11-19 01:52:29,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:29,783 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:29,783 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:29,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:52:29,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:29,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash 783150618, now seen corresponding path program 3 times [2024-11-19 01:52:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:29,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135338040] [2024-11-19 01:52:29,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:29,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:52:29,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:30,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:30,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135338040] [2024-11-19 01:52:30,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135338040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:30,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:30,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:30,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862749341] [2024-11-19 01:52:30,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:30,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:30,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:30,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:30,145 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:30,336 INFO L124 PetriNetUnfolderBase]: 205/428 cut-off events. [2024-11-19 01:52:30,336 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-19 01:52:30,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 428 events. 205/428 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1932 event pairs, 9 based on Foata normal form. 1/429 useless extension candidates. Maximal degree in co-relation 1349. Up to 213 conditions per place. [2024-11-19 01:52:30,343 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 48 selfloop transitions, 26 changer transitions 5/83 dead transitions. [2024-11-19 01:52:30,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 83 transitions, 569 flow [2024-11-19 01:52:30,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:52:30,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-19 01:52:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-11-19 01:52:30,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4169278996865204 [2024-11-19 01:52:30,348 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 274 flow. Second operand 11 states and 133 transitions. [2024-11-19 01:52:30,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 83 transitions, 569 flow [2024-11-19 01:52:30,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 83 transitions, 546 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:30,353 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 349 flow [2024-11-19 01:52:30,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=349, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-11-19 01:52:30,353 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-11-19 01:52:30,354 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 349 flow [2024-11-19 01:52:30,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:30,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:30,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:30,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:52:30,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:30,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash -496111328, now seen corresponding path program 4 times [2024-11-19 01:52:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:30,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922466853] [2024-11-19 01:52:30,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:30,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:30,370 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:30,371 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:30,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:30,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922466853] [2024-11-19 01:52:30,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922466853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:30,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:30,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:30,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476656849] [2024-11-19 01:52:30,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:30,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:30,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:30,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:30,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:30,678 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:52:30,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 349 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:30,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:30,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:52:30,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:30,904 INFO L124 PetriNetUnfolderBase]: 233/477 cut-off events. [2024-11-19 01:52:30,905 INFO L125 PetriNetUnfolderBase]: For 1011/1011 co-relation queries the response was YES. [2024-11-19 01:52:30,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 477 events. 233/477 cut-off events. For 1011/1011 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2176 event pairs, 38 based on Foata normal form. 1/478 useless extension candidates. Maximal degree in co-relation 1626. Up to 295 conditions per place. [2024-11-19 01:52:30,908 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 54 selfloop transitions, 23 changer transitions 5/85 dead transitions. [2024-11-19 01:52:30,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 85 transitions, 662 flow [2024-11-19 01:52:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:30,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-11-19 01:52:30,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2024-11-19 01:52:30,909 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 349 flow. Second operand 10 states and 118 transitions. [2024-11-19 01:52:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 85 transitions, 662 flow [2024-11-19 01:52:30,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 599 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:30,917 INFO L231 Difference]: Finished difference. Result has 69 places, 57 transitions, 404 flow [2024-11-19 01:52:30,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=404, PETRI_PLACES=69, PETRI_TRANSITIONS=57} [2024-11-19 01:52:30,917 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-11-19 01:52:30,918 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 57 transitions, 404 flow [2024-11-19 01:52:30,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:30,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:30,919 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:30,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:52:30,919 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:30,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:30,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1358592218, now seen corresponding path program 5 times [2024-11-19 01:52:30,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:30,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917092983] [2024-11-19 01:52:30,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:52:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:30,937 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:30,937 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:31,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:31,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917092983] [2024-11-19 01:52:31,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917092983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:31,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:31,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:31,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956423739] [2024-11-19 01:52:31,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:31,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:31,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:31,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:31,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:31,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:31,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 57 transitions, 404 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:31,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:31,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:31,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:31,443 INFO L124 PetriNetUnfolderBase]: 218/474 cut-off events. [2024-11-19 01:52:31,444 INFO L125 PetriNetUnfolderBase]: For 1018/1018 co-relation queries the response was YES. [2024-11-19 01:52:31,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 474 events. 218/474 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2267 event pairs, 23 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1656. Up to 287 conditions per place. [2024-11-19 01:52:31,448 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 55 selfloop transitions, 23 changer transitions 5/87 dead transitions. [2024-11-19 01:52:31,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 87 transitions, 695 flow [2024-11-19 01:52:31,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:31,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-11-19 01:52:31,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42758620689655175 [2024-11-19 01:52:31,450 INFO L175 Difference]: Start difference. First operand has 69 places, 57 transitions, 404 flow. Second operand 10 states and 124 transitions. [2024-11-19 01:52:31,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 87 transitions, 695 flow [2024-11-19 01:52:31,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 87 transitions, 654 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-19 01:52:31,457 INFO L231 Difference]: Finished difference. Result has 76 places, 60 transitions, 450 flow [2024-11-19 01:52:31,457 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=450, PETRI_PLACES=76, PETRI_TRANSITIONS=60} [2024-11-19 01:52:31,458 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-11-19 01:52:31,458 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 60 transitions, 450 flow [2024-11-19 01:52:31,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:31,458 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:31,458 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:31,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:52:31,458 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:31,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:31,459 INFO L85 PathProgramCache]: Analyzing trace with hash 75713766, now seen corresponding path program 6 times [2024-11-19 01:52:31,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:31,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611234004] [2024-11-19 01:52:31,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:52:31,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:31,478 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-19 01:52:31,478 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:31,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:31,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:31,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611234004] [2024-11-19 01:52:31,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611234004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:31,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:31,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:31,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030391015] [2024-11-19 01:52:31,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:31,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:31,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:31,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:31,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:31,735 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:31,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 60 transitions, 450 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:31,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:31,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:31,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:31,940 INFO L124 PetriNetUnfolderBase]: 214/461 cut-off events. [2024-11-19 01:52:31,941 INFO L125 PetriNetUnfolderBase]: For 1502/1510 co-relation queries the response was YES. [2024-11-19 01:52:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 461 events. 214/461 cut-off events. For 1502/1510 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2181 event pairs, 23 based on Foata normal form. 9/470 useless extension candidates. Maximal degree in co-relation 1730. Up to 291 conditions per place. [2024-11-19 01:52:31,945 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 49 selfloop transitions, 22 changer transitions 8/83 dead transitions. [2024-11-19 01:52:31,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 83 transitions, 711 flow [2024-11-19 01:52:31,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-11-19 01:52:31,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4103448275862069 [2024-11-19 01:52:31,947 INFO L175 Difference]: Start difference. First operand has 76 places, 60 transitions, 450 flow. Second operand 10 states and 119 transitions. [2024-11-19 01:52:31,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 83 transitions, 711 flow [2024-11-19 01:52:31,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 83 transitions, 654 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-11-19 01:52:31,952 INFO L231 Difference]: Finished difference. Result has 79 places, 60 transitions, 446 flow [2024-11-19 01:52:31,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=446, PETRI_PLACES=79, PETRI_TRANSITIONS=60} [2024-11-19 01:52:31,954 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 50 predicate places. [2024-11-19 01:52:31,954 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 60 transitions, 446 flow [2024-11-19 01:52:31,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:31,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:31,955 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:31,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:52:31,955 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:31,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1376393114, now seen corresponding path program 7 times [2024-11-19 01:52:31,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:31,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358625680] [2024-11-19 01:52:31,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-19 01:52:31,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358625680] [2024-11-19 01:52:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358625680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701350447] [2024-11-19 01:52:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:32,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:32,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:32,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:32,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 60 transitions, 446 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:32,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:32,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:32,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:32,461 INFO L124 PetriNetUnfolderBase]: 223/488 cut-off events. [2024-11-19 01:52:32,462 INFO L125 PetriNetUnfolderBase]: For 1662/1674 co-relation queries the response was YES. [2024-11-19 01:52:32,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 488 events. 223/488 cut-off events. For 1662/1674 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2370 event pairs, 34 based on Foata normal form. 3/491 useless extension candidates. Maximal degree in co-relation 1827. Up to 297 conditions per place. [2024-11-19 01:52:32,465 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 58 selfloop transitions, 23 changer transitions 5/90 dead transitions. [2024-11-19 01:52:32,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 90 transitions, 786 flow [2024-11-19 01:52:32,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:32,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:32,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-11-19 01:52:32,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43448275862068964 [2024-11-19 01:52:32,470 INFO L175 Difference]: Start difference. First operand has 79 places, 60 transitions, 446 flow. Second operand 10 states and 126 transitions. [2024-11-19 01:52:32,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 90 transitions, 786 flow [2024-11-19 01:52:32,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 732 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-11-19 01:52:32,476 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 489 flow [2024-11-19 01:52:32,476 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=489, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2024-11-19 01:52:32,478 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 52 predicate places. [2024-11-19 01:52:32,478 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 489 flow [2024-11-19 01:52:32,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:32,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:32,480 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:32,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:52:32,480 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:32,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1634603250, now seen corresponding path program 8 times [2024-11-19 01:52:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:32,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500615031] [2024-11-19 01:52:32,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:32,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:32,497 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 01:52:32,497 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:32,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500615031] [2024-11-19 01:52:32,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500615031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:32,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:32,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:32,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895824227] [2024-11-19 01:52:32,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:32,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:32,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:32,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:32,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:32,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:32,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 489 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:32,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:32,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:32,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:32,944 INFO L124 PetriNetUnfolderBase]: 219/475 cut-off events. [2024-11-19 01:52:32,944 INFO L125 PetriNetUnfolderBase]: For 2336/2362 co-relation queries the response was YES. [2024-11-19 01:52:32,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 475 events. 219/475 cut-off events. For 2336/2362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2286 event pairs, 34 based on Foata normal form. 11/486 useless extension candidates. Maximal degree in co-relation 1891. Up to 301 conditions per place. [2024-11-19 01:52:32,949 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 52 selfloop transitions, 22 changer transitions 8/86 dead transitions. [2024-11-19 01:52:32,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 86 transitions, 791 flow [2024-11-19 01:52:32,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-11-19 01:52:32,955 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41724137931034483 [2024-11-19 01:52:32,955 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 489 flow. Second operand 10 states and 121 transitions. [2024-11-19 01:52:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 86 transitions, 791 flow [2024-11-19 01:52:32,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 86 transitions, 724 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-11-19 01:52:32,961 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 477 flow [2024-11-19 01:52:32,962 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=477, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-11-19 01:52:32,962 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 55 predicate places. [2024-11-19 01:52:32,962 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 477 flow [2024-11-19 01:52:32,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:32,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:32,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:32,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:52:32,963 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:32,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:32,963 INFO L85 PathProgramCache]: Analyzing trace with hash 744096290, now seen corresponding path program 9 times [2024-11-19 01:52:32,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:32,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986063927] [2024-11-19 01:52:32,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:32,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:32,981 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-19 01:52:32,982 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:33,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:33,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:33,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986063927] [2024-11-19 01:52:33,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986063927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:33,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:33,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:33,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726926048] [2024-11-19 01:52:33,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:33,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:33,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:33,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:33,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:33,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-11-19 01:52:33,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 477 flow. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:33,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:33,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-11-19 01:52:33,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:33,464 INFO L124 PetriNetUnfolderBase]: 231/503 cut-off events. [2024-11-19 01:52:33,464 INFO L125 PetriNetUnfolderBase]: For 2568/2592 co-relation queries the response was YES. [2024-11-19 01:52:33,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2024 conditions, 503 events. 231/503 cut-off events. For 2568/2592 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2429 event pairs, 40 based on Foata normal form. 5/507 useless extension candidates. Maximal degree in co-relation 1997. Up to 307 conditions per place. [2024-11-19 01:52:33,468 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 5/92 dead transitions. [2024-11-19 01:52:33,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 92 transitions, 840 flow [2024-11-19 01:52:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:33,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-11-19 01:52:33,469 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4379310344827586 [2024-11-19 01:52:33,469 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 477 flow. Second operand 10 states and 127 transitions. [2024-11-19 01:52:33,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 92 transitions, 840 flow [2024-11-19 01:52:33,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 92 transitions, 784 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-19 01:52:33,475 INFO L231 Difference]: Finished difference. Result has 86 places, 66 transitions, 526 flow [2024-11-19 01:52:33,475 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=526, PETRI_PLACES=86, PETRI_TRANSITIONS=66} [2024-11-19 01:52:33,476 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 57 predicate places. [2024-11-19 01:52:33,476 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 66 transitions, 526 flow [2024-11-19 01:52:33,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 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) [2024-11-19 01:52:33,476 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:33,477 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:33,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:52:33,477 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:33,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:33,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2038669252, now seen corresponding path program 10 times [2024-11-19 01:52:33,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:33,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188546374] [2024-11-19 01:52:33,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:33,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:33,488 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:33,489 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:33,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188546374] [2024-11-19 01:52:33,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188546374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:33,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:52:33,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:52:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685132472] [2024-11-19 01:52:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:33,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 01:52:33,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:33,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 01:52:33,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:52:33,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:52:33,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 66 transitions, 526 flow. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:33,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:33,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:52:33,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:33,889 INFO L124 PetriNetUnfolderBase]: 256/535 cut-off events. [2024-11-19 01:52:33,890 INFO L125 PetriNetUnfolderBase]: For 3605/3643 co-relation queries the response was YES. [2024-11-19 01:52:33,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 535 events. 256/535 cut-off events. For 3605/3643 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2535 event pairs, 50 based on Foata normal form. 13/548 useless extension candidates. Maximal degree in co-relation 2215. Up to 339 conditions per place. [2024-11-19 01:52:33,894 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 61 selfloop transitions, 22 changer transitions 8/94 dead transitions. [2024-11-19 01:52:33,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 868 flow [2024-11-19 01:52:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:52:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:52:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-19 01:52:33,895 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-11-19 01:52:33,895 INFO L175 Difference]: Start difference. First operand has 86 places, 66 transitions, 526 flow. Second operand 10 states and 120 transitions. [2024-11-19 01:52:33,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 868 flow [2024-11-19 01:52:33,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 94 transitions, 793 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-19 01:52:33,903 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 522 flow [2024-11-19 01:52:33,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=522, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-11-19 01:52:33,904 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2024-11-19 01:52:33,905 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 522 flow [2024-11-19 01:52:33,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:52:33,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:33,905 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] [2024-11-19 01:52:33,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:52:33,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:33,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:33,906 INFO L85 PathProgramCache]: Analyzing trace with hash 2074282100, now seen corresponding path program 1 times [2024-11-19 01:52:33,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:33,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083026784] [2024-11-19 01:52:33,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:33,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:33,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083026784] [2024-11-19 01:52:33,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083026784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:33,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060901808] [2024-11-19 01:52:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:33,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:33,991 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) [2024-11-19 01:52:33,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:52:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:34,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 01:52:34,067 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:34,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:34,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060901808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:34,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:34,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-19 01:52:34,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695666453] [2024-11-19 01:52:34,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:34,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:52:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:34,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:52:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:52:34,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 01:52:34,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 522 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 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) [2024-11-19 01:52:34,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:34,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 01:52:34,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:34,421 INFO L124 PetriNetUnfolderBase]: 367/864 cut-off events. [2024-11-19 01:52:34,422 INFO L125 PetriNetUnfolderBase]: For 6401/6451 co-relation queries the response was YES. [2024-11-19 01:52:34,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3702 conditions, 864 events. 367/864 cut-off events. For 6401/6451 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5183 event pairs, 172 based on Foata normal form. 38/900 useless extension candidates. Maximal degree in co-relation 3671. Up to 379 conditions per place. [2024-11-19 01:52:34,428 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 110 selfloop transitions, 5 changer transitions 10/130 dead transitions. [2024-11-19 01:52:34,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 130 transitions, 1272 flow [2024-11-19 01:52:34,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:52:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:52:34,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-11-19 01:52:34,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5114942528735632 [2024-11-19 01:52:34,429 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 522 flow. Second operand 6 states and 89 transitions. [2024-11-19 01:52:34,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 130 transitions, 1272 flow [2024-11-19 01:52:34,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 1165 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-11-19 01:52:34,437 INFO L231 Difference]: Finished difference. Result has 89 places, 70 transitions, 517 flow [2024-11-19 01:52:34,438 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=89, PETRI_TRANSITIONS=70} [2024-11-19 01:52:34,438 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2024-11-19 01:52:34,438 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 70 transitions, 517 flow [2024-11-19 01:52:34,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 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) [2024-11-19 01:52:34,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:34,439 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] [2024-11-19 01:52:34,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:52:34,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-19 01:52:34,644 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:34,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1545213638, now seen corresponding path program 2 times [2024-11-19 01:52:34,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:34,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864724377] [2024-11-19 01:52:34,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:34,663 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:34,664 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:35,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:35,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864724377] [2024-11-19 01:52:35,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864724377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:35,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854825825] [2024-11-19 01:52:35,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:35,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:35,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:35,008 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) [2024-11-19 01:52:35,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:52:35,074 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:35,074 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:35,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 01:52:35,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:35,117 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 [2024-11-19 01:52:35,141 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 [2024-11-19 01:52:35,282 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:35,282 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 23 treesize of output 15 [2024-11-19 01:52:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:35,402 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:35,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2024-11-19 01:52:35,763 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:52:35,764 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 167 treesize of output 152 [2024-11-19 01:52:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854825825] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:35,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-19 01:52:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271132321] [2024-11-19 01:52:35,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:35,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-19 01:52:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-19 01:52:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:52:35,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:52:35,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 70 transitions, 517 flow. Second operand has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 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) [2024-11-19 01:52:35,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:35,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:52:35,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:37,240 INFO L124 PetriNetUnfolderBase]: 1040/2192 cut-off events. [2024-11-19 01:52:37,241 INFO L125 PetriNetUnfolderBase]: For 15573/15575 co-relation queries the response was YES. [2024-11-19 01:52:37,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8932 conditions, 2192 events. 1040/2192 cut-off events. For 15573/15575 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13961 event pairs, 234 based on Foata normal form. 40/2232 useless extension candidates. Maximal degree in co-relation 8899. Up to 417 conditions per place. [2024-11-19 01:52:37,257 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 216 selfloop transitions, 69 changer transitions 0/288 dead transitions. [2024-11-19 01:52:37,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 288 transitions, 2559 flow [2024-11-19 01:52:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 01:52:37,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-19 01:52:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 301 transitions. [2024-11-19 01:52:37,258 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2024-11-19 01:52:37,258 INFO L175 Difference]: Start difference. First operand has 89 places, 70 transitions, 517 flow. Second operand 21 states and 301 transitions. [2024-11-19 01:52:37,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 288 transitions, 2559 flow [2024-11-19 01:52:37,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 288 transitions, 2496 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:37,284 INFO L231 Difference]: Finished difference. Result has 118 places, 128 transitions, 1263 flow [2024-11-19 01:52:37,284 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1263, PETRI_PLACES=118, PETRI_TRANSITIONS=128} [2024-11-19 01:52:37,284 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-11-19 01:52:37,285 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 128 transitions, 1263 flow [2024-11-19 01:52:37,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 7.541666666666667) internal successors, (181), 24 states have internal predecessors, (181), 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) [2024-11-19 01:52:37,285 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:37,285 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] [2024-11-19 01:52:37,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:52:37,485 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,SelfDestructingSolverStorable14 [2024-11-19 01:52:37,486 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:37,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:37,486 INFO L85 PathProgramCache]: Analyzing trace with hash 937965248, now seen corresponding path program 1 times [2024-11-19 01:52:37,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:37,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832483171] [2024-11-19 01:52:37,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:37,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:37,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832483171] [2024-11-19 01:52:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832483171] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333395469] [2024-11-19 01:52:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:37,562 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) [2024-11-19 01:52:37,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:52:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:37,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:52:37,627 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:37,656 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:52:37,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333395469] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:52:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:52:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-19 01:52:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059566587] [2024-11-19 01:52:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:52:37,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:52:37,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:37,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:52:37,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:52:37,658 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-11-19 01:52:37,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 128 transitions, 1263 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-19 01:52:37,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:37,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-11-19 01:52:37,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:37,925 INFO L124 PetriNetUnfolderBase]: 964/2260 cut-off events. [2024-11-19 01:52:37,926 INFO L125 PetriNetUnfolderBase]: For 26297/26476 co-relation queries the response was YES. [2024-11-19 01:52:37,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10556 conditions, 2260 events. 964/2260 cut-off events. For 26297/26476 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 15521 event pairs, 265 based on Foata normal form. 126/2374 useless extension candidates. Maximal degree in co-relation 10513. Up to 928 conditions per place. [2024-11-19 01:52:37,942 INFO L140 encePairwiseOnDemand]: 25/29 looper letters, 95 selfloop transitions, 26 changer transitions 27/159 dead transitions. [2024-11-19 01:52:37,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 1795 flow [2024-11-19 01:52:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:52:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:52:37,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2024-11-19 01:52:37,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-11-19 01:52:37,944 INFO L175 Difference]: Start difference. First operand has 118 places, 128 transitions, 1263 flow. Second operand 4 states and 78 transitions. [2024-11-19 01:52:37,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 1795 flow [2024-11-19 01:52:37,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 1441 flow, removed 165 selfloop flow, removed 7 redundant places. [2024-11-19 01:52:37,995 INFO L231 Difference]: Finished difference. Result has 116 places, 106 transitions, 916 flow [2024-11-19 01:52:37,996 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=916, PETRI_PLACES=116, PETRI_TRANSITIONS=106} [2024-11-19 01:52:37,996 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2024-11-19 01:52:37,996 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 106 transitions, 916 flow [2024-11-19 01:52:37,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2024-11-19 01:52:37,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:37,997 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] [2024-11-19 01:52:38,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:52:38,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:38,198 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:38,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:38,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1933422350, now seen corresponding path program 3 times [2024-11-19 01:52:38,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:38,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806227297] [2024-11-19 01:52:38,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:38,214 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:38,215 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:38,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:38,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806227297] [2024-11-19 01:52:38,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806227297] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:38,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860657897] [2024-11-19 01:52:38,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:52:38,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:38,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:38,506 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:38,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 01:52:38,569 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:52:38,569 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:38,570 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-19 01:52:38,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:38,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:38,836 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:52:38,836 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 25 treesize of output 12 [2024-11-19 01:52:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:38,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860657897] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:38,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:38,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-11-19 01:52:38,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223232900] [2024-11-19 01:52:38,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:38,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-19 01:52:38,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-19 01:52:38,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-11-19 01:52:39,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:52:39,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 106 transitions, 916 flow. Second operand has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 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) [2024-11-19 01:52:39,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:39,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:52:39,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:40,161 INFO L124 PetriNetUnfolderBase]: 1771/3416 cut-off events. [2024-11-19 01:52:40,162 INFO L125 PetriNetUnfolderBase]: For 20956/20956 co-relation queries the response was YES. [2024-11-19 01:52:40,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13785 conditions, 3416 events. 1771/3416 cut-off events. For 20956/20956 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20874 event pairs, 261 based on Foata normal form. 11/3387 useless extension candidates. Maximal degree in co-relation 13742. Up to 942 conditions per place. [2024-11-19 01:52:40,193 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 244 selfloop transitions, 76 changer transitions 0/323 dead transitions. [2024-11-19 01:52:40,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 323 transitions, 2918 flow [2024-11-19 01:52:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 01:52:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-19 01:52:40,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 333 transitions. [2024-11-19 01:52:40,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47844827586206895 [2024-11-19 01:52:40,196 INFO L175 Difference]: Start difference. First operand has 116 places, 106 transitions, 916 flow. Second operand 24 states and 333 transitions. [2024-11-19 01:52:40,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 323 transitions, 2918 flow [2024-11-19 01:52:40,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 323 transitions, 2559 flow, removed 165 selfloop flow, removed 16 redundant places. [2024-11-19 01:52:40,246 INFO L231 Difference]: Finished difference. Result has 115 places, 147 transitions, 1378 flow [2024-11-19 01:52:40,246 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1378, PETRI_PLACES=115, PETRI_TRANSITIONS=147} [2024-11-19 01:52:40,247 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 86 predicate places. [2024-11-19 01:52:40,247 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 147 transitions, 1378 flow [2024-11-19 01:52:40,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 7.590909090909091) internal successors, (167), 22 states have internal predecessors, (167), 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) [2024-11-19 01:52:40,247 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:40,247 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:52:40,260 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 01:52:40,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 01:52:40,448 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:40,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:40,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1285908522, now seen corresponding path program 4 times [2024-11-19 01:52:40,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:40,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316337441] [2024-11-19 01:52:40,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:40,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:40,467 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:40,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:40,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 01:52:40,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316337441] [2024-11-19 01:52:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316337441] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443085986] [2024-11-19 01:52:40,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:52:40,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:40,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:40,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:40,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 01:52:40,630 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:52:40,631 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:40,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 01:52:40,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:40,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:52:40,693 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:40,727 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:52:40,728 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 24 treesize of output 11 [2024-11-19 01:52:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 01:52:40,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443085986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:40,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:40,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2024-11-19 01:52:40,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705263085] [2024-11-19 01:52:40,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:40,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:52:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:52:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:52:40,749 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-11-19 01:52:40,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 147 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-11-19 01:52:40,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:40,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-11-19 01:52:40,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:41,290 INFO L124 PetriNetUnfolderBase]: 2299/4471 cut-off events. [2024-11-19 01:52:41,290 INFO L125 PetriNetUnfolderBase]: For 21000/21000 co-relation queries the response was YES. [2024-11-19 01:52:41,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17414 conditions, 4471 events. 2299/4471 cut-off events. For 21000/21000 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 29291 event pairs, 410 based on Foata normal form. 28/4497 useless extension candidates. Maximal degree in co-relation 17373. Up to 1955 conditions per place. [2024-11-19 01:52:41,313 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 168 selfloop transitions, 59 changer transitions 0/230 dead transitions. [2024-11-19 01:52:41,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 230 transitions, 2556 flow [2024-11-19 01:52:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:52:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:52:41,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-11-19 01:52:41,314 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40948275862068967 [2024-11-19 01:52:41,315 INFO L175 Difference]: Start difference. First operand has 115 places, 147 transitions, 1378 flow. Second operand 8 states and 95 transitions. [2024-11-19 01:52:41,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 230 transitions, 2556 flow [2024-11-19 01:52:41,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 230 transitions, 2445 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-11-19 01:52:41,377 INFO L231 Difference]: Finished difference. Result has 118 places, 162 transitions, 1693 flow [2024-11-19 01:52:41,377 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1311, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1693, PETRI_PLACES=118, PETRI_TRANSITIONS=162} [2024-11-19 01:52:41,378 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 89 predicate places. [2024-11-19 01:52:41,378 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 162 transitions, 1693 flow [2024-11-19 01:52:41,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.181818181818182) internal successors, (90), 11 states have internal predecessors, (90), 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) [2024-11-19 01:52:41,379 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:41,379 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] [2024-11-19 01:52:41,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 01:52:41,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 01:52:41,584 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:41,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:41,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1134690662, now seen corresponding path program 1 times [2024-11-19 01:52:41,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:41,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806838793] [2024-11-19 01:52:41,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:41,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:41,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:42,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:42,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806838793] [2024-11-19 01:52:42,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806838793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:42,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061579384] [2024-11-19 01:52:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:52:42,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:42,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:42,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:42,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 01:52:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:52:42,541 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 01:52:42,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:43,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:43,723 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:43,724 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 42 treesize of output 34 [2024-11-19 01:52:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:44,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061579384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:44,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:44,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 49 [2024-11-19 01:52:44,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197381918] [2024-11-19 01:52:44,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:44,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-19 01:52:44,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:44,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-19 01:52:44,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=2180, Unknown=0, NotChecked=0, Total=2450 [2024-11-19 01:52:44,262 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:52:44,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 162 transitions, 1693 flow. Second operand has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 states have internal predecessors, (276), 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) [2024-11-19 01:52:44,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:44,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:52:44,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:47,633 INFO L124 PetriNetUnfolderBase]: 3984/7484 cut-off events. [2024-11-19 01:52:47,633 INFO L125 PetriNetUnfolderBase]: For 50267/50267 co-relation queries the response was YES. [2024-11-19 01:52:47,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31655 conditions, 7484 events. 3984/7484 cut-off events. For 50267/50267 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 52479 event pairs, 514 based on Foata normal form. 4/7488 useless extension candidates. Maximal degree in co-relation 31614. Up to 4365 conditions per place. [2024-11-19 01:52:47,674 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 290 selfloop transitions, 243 changer transitions 11/546 dead transitions. [2024-11-19 01:52:47,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 546 transitions, 6376 flow [2024-11-19 01:52:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-19 01:52:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-19 01:52:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 403 transitions. [2024-11-19 01:52:47,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29567131327953045 [2024-11-19 01:52:47,676 INFO L175 Difference]: Start difference. First operand has 118 places, 162 transitions, 1693 flow. Second operand 47 states and 403 transitions. [2024-11-19 01:52:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 546 transitions, 6376 flow [2024-11-19 01:52:47,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 546 transitions, 6355 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-19 01:52:47,882 INFO L231 Difference]: Finished difference. Result has 176 places, 389 transitions, 5377 flow [2024-11-19 01:52:47,882 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=5377, PETRI_PLACES=176, PETRI_TRANSITIONS=389} [2024-11-19 01:52:47,883 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 147 predicate places. [2024-11-19 01:52:47,883 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 389 transitions, 5377 flow [2024-11-19 01:52:47,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.52) internal successors, (276), 50 states have internal predecessors, (276), 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) [2024-11-19 01:52:47,883 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:52:47,884 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] [2024-11-19 01:52:47,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 01:52:48,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:48,088 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:52:48,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:52:48,089 INFO L85 PathProgramCache]: Analyzing trace with hash -287117274, now seen corresponding path program 2 times [2024-11-19 01:52:48,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:52:48,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655563150] [2024-11-19 01:52:48,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:48,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:52:48,108 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:48,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:52:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655563150] [2024-11-19 01:52:48,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655563150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:52:48,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964703655] [2024-11-19 01:52:48,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:52:48,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:52:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:52:48,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:52:48,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 01:52:49,023 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:52:49,023 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:52:49,024 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-19 01:52:49,026 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:52:49,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:49,666 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:52:50,128 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:52:50,129 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 42 treesize of output 34 [2024-11-19 01:52:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:52:50,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964703655] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:52:50,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:52:50,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-19 01:52:50,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216806233] [2024-11-19 01:52:50,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:52:50,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 01:52:50,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:52:50,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 01:52:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=2317, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 01:52:50,725 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:52:50,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 389 transitions, 5377 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 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) [2024-11-19 01:52:50,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:52:50,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:52:50,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:05,503 INFO L124 PetriNetUnfolderBase]: 5242/10289 cut-off events. [2024-11-19 01:53:05,503 INFO L125 PetriNetUnfolderBase]: For 94096/94096 co-relation queries the response was YES. [2024-11-19 01:53:05,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50767 conditions, 10289 events. 5242/10289 cut-off events. For 94096/94096 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 80703 event pairs, 547 based on Foata normal form. 341/10630 useless extension candidates. Maximal degree in co-relation 50711. Up to 4720 conditions per place. [2024-11-19 01:53:05,580 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 448 selfloop transitions, 396 changer transitions 181/1027 dead transitions. [2024-11-19 01:53:05,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 1027 transitions, 12560 flow [2024-11-19 01:53:05,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-19 01:53:05,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2024-11-19 01:53:05,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 954 transitions. [2024-11-19 01:53:05,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3018032268269535 [2024-11-19 01:53:05,583 INFO L175 Difference]: Start difference. First operand has 176 places, 389 transitions, 5377 flow. Second operand 109 states and 954 transitions. [2024-11-19 01:53:05,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 1027 transitions, 12560 flow [2024-11-19 01:53:05,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1027 transitions, 12213 flow, removed 168 selfloop flow, removed 6 redundant places. [2024-11-19 01:53:05,911 INFO L231 Difference]: Finished difference. Result has 319 places, 617 transitions, 9193 flow [2024-11-19 01:53:05,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=5113, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=9193, PETRI_PLACES=319, PETRI_TRANSITIONS=617} [2024-11-19 01:53:05,912 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 290 predicate places. [2024-11-19 01:53:05,912 INFO L471 AbstractCegarLoop]: Abstraction has has 319 places, 617 transitions, 9193 flow [2024-11-19 01:53:05,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 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) [2024-11-19 01:53:05,912 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:05,912 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] [2024-11-19 01:53:05,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 01:53:06,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:06,113 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:06,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:06,113 INFO L85 PathProgramCache]: Analyzing trace with hash 460074244, now seen corresponding path program 3 times [2024-11-19 01:53:06,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:06,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282509048] [2024-11-19 01:53:06,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:06,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:06,129 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:06,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:06,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:06,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282509048] [2024-11-19 01:53:06,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282509048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:06,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109679611] [2024-11-19 01:53:06,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:53:06,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:06,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:06,934 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:06,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 01:53:07,001 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:53:07,002 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:07,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 01:53:07,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:07,518 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:53:07,518 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 23 treesize of output 10 [2024-11-19 01:53:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:07,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:08,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:53:08,258 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 40 treesize of output 32 [2024-11-19 01:53:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:08,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109679611] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:08,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:08,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 01:53:08,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404471657] [2024-11-19 01:53:08,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:08,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 01:53:08,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:08,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 01:53:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=2441, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 01:53:08,746 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:53:08,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 617 transitions, 9193 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2024-11-19 01:53:08,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:08,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:53:08,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:16,990 INFO L124 PetriNetUnfolderBase]: 5148/9826 cut-off events. [2024-11-19 01:53:16,991 INFO L125 PetriNetUnfolderBase]: For 136157/136157 co-relation queries the response was YES. [2024-11-19 01:53:17,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59992 conditions, 9826 events. 5148/9826 cut-off events. For 136157/136157 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 73759 event pairs, 481 based on Foata normal form. 4/9830 useless extension candidates. Maximal degree in co-relation 59895. Up to 5125 conditions per place. [2024-11-19 01:53:17,101 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 463 selfloop transitions, 598 changer transitions 11/1074 dead transitions. [2024-11-19 01:53:17,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1074 transitions, 16262 flow [2024-11-19 01:53:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-19 01:53:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-11-19 01:53:17,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 606 transitions. [2024-11-19 01:53:17,103 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30730223123732253 [2024-11-19 01:53:17,103 INFO L175 Difference]: Start difference. First operand has 319 places, 617 transitions, 9193 flow. Second operand 68 states and 606 transitions. [2024-11-19 01:53:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1074 transitions, 16262 flow [2024-11-19 01:53:18,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 1074 transitions, 15106 flow, removed 552 selfloop flow, removed 28 redundant places. [2024-11-19 01:53:18,148 INFO L231 Difference]: Finished difference. Result has 355 places, 849 transitions, 13784 flow [2024-11-19 01:53:18,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=8371, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=393, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=13784, PETRI_PLACES=355, PETRI_TRANSITIONS=849} [2024-11-19 01:53:18,149 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 326 predicate places. [2024-11-19 01:53:18,149 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 849 transitions, 13784 flow [2024-11-19 01:53:18,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2024-11-19 01:53:18,149 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:18,149 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] [2024-11-19 01:53:18,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:18,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-19 01:53:18,350 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:18,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1802102290, now seen corresponding path program 4 times [2024-11-19 01:53:18,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:18,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615417055] [2024-11-19 01:53:18,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:18,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:18,369 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:18,370 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615417055] [2024-11-19 01:53:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615417055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443802718] [2024-11-19 01:53:19,060 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:53:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:19,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:19,061 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:19,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 01:53:19,120 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:53:19,120 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:19,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 01:53:19,123 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:19,777 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:20,263 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:53:20,264 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 40 treesize of output 32 [2024-11-19 01:53:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:20,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443802718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:20,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:20,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 17] total 51 [2024-11-19 01:53:20,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941583489] [2024-11-19 01:53:20,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:20,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-19 01:53:20,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:20,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-19 01:53:20,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=2424, Unknown=0, NotChecked=0, Total=2652 [2024-11-19 01:53:20,717 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:53:20,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 849 transitions, 13784 flow. Second operand has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2024-11-19 01:53:20,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:20,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:53:20,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:27,980 INFO L124 PetriNetUnfolderBase]: 5351/10251 cut-off events. [2024-11-19 01:53:27,981 INFO L125 PetriNetUnfolderBase]: For 149229/149229 co-relation queries the response was YES. [2024-11-19 01:53:28,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66920 conditions, 10251 events. 5351/10251 cut-off events. For 149229/149229 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 77703 event pairs, 519 based on Foata normal form. 4/10255 useless extension candidates. Maximal degree in co-relation 66824. Up to 5522 conditions per place. [2024-11-19 01:53:28,083 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 510 selfloop transitions, 680 changer transitions 11/1203 dead transitions. [2024-11-19 01:53:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1203 transitions, 19940 flow [2024-11-19 01:53:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-19 01:53:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-11-19 01:53:28,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 577 transitions. [2024-11-19 01:53:28,087 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3158182813355227 [2024-11-19 01:53:28,087 INFO L175 Difference]: Start difference. First operand has 355 places, 849 transitions, 13784 flow. Second operand 63 states and 577 transitions. [2024-11-19 01:53:28,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1203 transitions, 19940 flow [2024-11-19 01:53:29,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 1203 transitions, 19102 flow, removed 393 selfloop flow, removed 10 redundant places. [2024-11-19 01:53:29,216 INFO L231 Difference]: Finished difference. Result has 423 places, 1000 transitions, 17729 flow [2024-11-19 01:53:29,217 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=13147, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=17729, PETRI_PLACES=423, PETRI_TRANSITIONS=1000} [2024-11-19 01:53:29,217 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 394 predicate places. [2024-11-19 01:53:29,217 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1000 transitions, 17729 flow [2024-11-19 01:53:29,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.5) internal successors, (286), 52 states have internal predecessors, (286), 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) [2024-11-19 01:53:29,217 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:29,217 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] [2024-11-19 01:53:29,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-19 01:53:29,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:29,418 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:29,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:29,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1779634174, now seen corresponding path program 5 times [2024-11-19 01:53:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:29,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562041211] [2024-11-19 01:53:29,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:29,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:29,438 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:29,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:30,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:30,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562041211] [2024-11-19 01:53:30,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562041211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:30,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201207379] [2024-11-19 01:53:30,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:53:30,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:30,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:30,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:30,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 01:53:30,230 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:53:30,230 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:30,231 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-19 01:53:30,233 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:30,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:31,253 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:53:31,254 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 40 treesize of output 32 [2024-11-19 01:53:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:31,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201207379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:31,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:31,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-19 01:53:31,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040289198] [2024-11-19 01:53:31,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:31,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 01:53:31,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 01:53:31,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=2305, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 01:53:31,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:53:31,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1000 transitions, 17729 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 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) [2024-11-19 01:53:31,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:31,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:53:31,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:53:38,359 INFO L124 PetriNetUnfolderBase]: 5455/10544 cut-off events. [2024-11-19 01:53:38,359 INFO L125 PetriNetUnfolderBase]: For 192581/192581 co-relation queries the response was YES. [2024-11-19 01:53:38,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74461 conditions, 10544 events. 5455/10544 cut-off events. For 192581/192581 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 81546 event pairs, 535 based on Foata normal form. 4/10548 useless extension candidates. Maximal degree in co-relation 74349. Up to 5556 conditions per place. [2024-11-19 01:53:38,505 INFO L140 encePairwiseOnDemand]: 13/29 looper letters, 550 selfloop transitions, 749 changer transitions 15/1316 dead transitions. [2024-11-19 01:53:38,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 1316 transitions, 23268 flow [2024-11-19 01:53:38,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-19 01:53:38,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2024-11-19 01:53:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 578 transitions. [2024-11-19 01:53:38,507 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.32146829810901 [2024-11-19 01:53:38,507 INFO L175 Difference]: Start difference. First operand has 423 places, 1000 transitions, 17729 flow. Second operand 62 states and 578 transitions. [2024-11-19 01:53:38,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 1316 transitions, 23268 flow [2024-11-19 01:53:40,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 1316 transitions, 22726 flow, removed 160 selfloop flow, removed 24 redundant places. [2024-11-19 01:53:40,233 INFO L231 Difference]: Finished difference. Result has 469 places, 1083 transitions, 20924 flow [2024-11-19 01:53:40,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=17237, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=20924, PETRI_PLACES=469, PETRI_TRANSITIONS=1083} [2024-11-19 01:53:40,235 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 440 predicate places. [2024-11-19 01:53:40,235 INFO L471 AbstractCegarLoop]: Abstraction has has 469 places, 1083 transitions, 20924 flow [2024-11-19 01:53:40,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 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) [2024-11-19 01:53:40,235 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:53:40,235 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] [2024-11-19 01:53:40,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-19 01:53:40,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-19 01:53:40,436 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-19 01:53:40,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:53:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash -700160860, now seen corresponding path program 6 times [2024-11-19 01:53:40,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:53:40,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327032050] [2024-11-19 01:53:40,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:40,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:53:40,511 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:53:40,511 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:41,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:53:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327032050] [2024-11-19 01:53:41,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327032050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:53:41,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232997867] [2024-11-19 01:53:41,411 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:53:41,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:53:41,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:53:41,412 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:53:41,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 01:53:41,483 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:53:41,483 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:53:41,484 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-19 01:53:41,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:53:42,052 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-19 01:53:42,053 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 23 treesize of output 10 [2024-11-19 01:53:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:42,232 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:53:42,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:53:42,782 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 40 treesize of output 32 [2024-11-19 01:53:43,240 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:53:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232997867] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:53:43,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:53:43,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 50 [2024-11-19 01:53:43,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385432106] [2024-11-19 01:53:43,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:53:43,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-19 01:53:43,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:53:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-19 01:53:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2348, Unknown=0, NotChecked=0, Total=2550 [2024-11-19 01:53:43,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2024-11-19 01:53:43,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1083 transitions, 20924 flow. Second operand has 51 states, 51 states have (on average 5.529411764705882) internal successors, (282), 51 states have internal predecessors, (282), 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) [2024-11-19 01:53:43,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:53:43,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2024-11-19 01:53:43,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand