./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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-buffer-mult.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:51:02,324 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:51:02,382 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:51:02,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:51:02,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:51:02,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:51:02,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:51:02,413 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:51:02,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:51:02,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:51:02,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:51:02,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:51:02,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:51:02,416 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:51:02,417 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:51:02,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:51:02,418 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:51:02,418 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:51:02,418 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:51:02,419 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:51:02,422 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:51:02,424 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:51:02,425 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:51:02,425 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:51:02,425 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:51:02,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:51:02,426 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:51:02,426 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:51:02,426 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:51:02,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:51:02,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:51:02,427 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:51:02,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:51:02,427 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:51:02,427 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:51:02,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:51:02,428 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:51:02,428 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:51:02,428 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:51:02,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:51:02,429 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:51:02,430 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:51:02,430 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2024-11-19 01:51:02,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:51:02,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:51:02,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:51:02,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:51:02,718 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:51:02,718 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-19 01:51:04,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:51:04,252 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:51:04,252 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2024-11-19 01:51:04,265 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b07070f9/b68cbe6b49f84c3b80577dff78ec9af9/FLAG653828d85 [2024-11-19 01:51:04,281 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b07070f9/b68cbe6b49f84c3b80577dff78ec9af9 [2024-11-19 01:51:04,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:51:04,285 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:51:04,286 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:51:04,286 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:51:04,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:51:04,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,292 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7152c30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04, skipping insertion in model container [2024-11-19 01:51:04,292 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,315 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:51:04,488 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-19 01:51:04,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:51:04,508 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:51:04,528 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c[4270,4283] [2024-11-19 01:51:04,556 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:51:04,585 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:51:04,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04 WrapperNode [2024-11-19 01:51:04,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:51:04,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:51:04,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:51:04,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:51:04,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,620 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,645 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 296 [2024-11-19 01:51:04,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:51:04,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:51:04,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:51:04,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:51:04,656 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,659 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,672 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-19 01:51:04,672 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,672 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,679 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,682 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,683 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,687 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:51:04,688 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:51:04,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:51:04,689 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:51:04,689 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (1/1) ... [2024-11-19 01:51:04,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:51:04,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:04,725 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 01:51:04,729 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 01:51:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:51:04,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 01:51:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 01:51:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 01:51:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 01:51:04,772 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-19 01:51:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-19 01:51:04,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-19 01:51:04,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-19 01:51:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-19 01:51:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-19 01:51:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-19 01:51:04,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-19 01:51:04,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 01:51:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 01:51:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-19 01:51:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-19 01:51:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 01:51:04,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:51:04,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:51:04,777 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 01:51:04,897 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:51:04,905 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:51:05,270 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-19 01:51:05,272 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:51:05,644 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:51:05,645 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-19 01:51:05,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:51:05 BoogieIcfgContainer [2024-11-19 01:51:05,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:51:05,647 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:51:05,647 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:51:05,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:51:05,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:51:04" (1/3) ... [2024-11-19 01:51:05,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a45d317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:51:05, skipping insertion in model container [2024-11-19 01:51:05,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:51:04" (2/3) ... [2024-11-19 01:51:05,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a45d317 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:51:05, skipping insertion in model container [2024-11-19 01:51:05,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:51:05" (3/3) ... [2024-11-19 01:51:05,653 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2024-11-19 01:51:05,671 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:51:05,671 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:51:05,671 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-19 01:51:05,754 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-19 01:51:05,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2024-11-19 01:51:05,808 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2024-11-19 01:51:05,811 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:51:05,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-19 01:51:05,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2024-11-19 01:51:05,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2024-11-19 01:51:05,828 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:51:05,833 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;@4bd919e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:51:05,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-19 01:51:05,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-19 01:51:05,851 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-19 01:51:05,851 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-19 01:51:05,851 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:05,852 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:05,853 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:05,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:05,857 INFO L85 PathProgramCache]: Analyzing trace with hash -616314390, now seen corresponding path program 1 times [2024-11-19 01:51:05,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:05,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479947912] [2024-11-19 01:51:05,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:05,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:06,222 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 01:51:06,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:06,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479947912] [2024-11-19 01:51:06,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479947912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:06,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:06,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:51:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687323377] [2024-11-19 01:51:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:06,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:51:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:06,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:51:06,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:51:06,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-19 01:51:06,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:06,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:06,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-19 01:51:06,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:06,808 INFO L124 PetriNetUnfolderBase]: 2407/3722 cut-off events. [2024-11-19 01:51:06,808 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-19 01:51:06,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 3722 events. 2407/3722 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21488 event pairs, 472 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 6303. Up to 2067 conditions per place. [2024-11-19 01:51:06,833 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2024-11-19 01:51:06,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 253 flow [2024-11-19 01:51:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:51:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:51:06,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-19 01:51:06,844 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-11-19 01:51:06,845 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 3 states and 109 transitions. [2024-11-19 01:51:06,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 253 flow [2024-11-19 01:51:06,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-19 01:51:06,856 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 117 flow [2024-11-19 01:51:06,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-19 01:51:06,863 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-19 01:51:06,863 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 117 flow [2024-11-19 01:51:06,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 01:51:06,863 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:06,864 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:06,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 01:51:06,864 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:06,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash 551345829, now seen corresponding path program 1 times [2024-11-19 01:51:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570551457] [2024-11-19 01:51:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:07,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:07,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570551457] [2024-11-19 01:51:07,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570551457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:07,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:07,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:51:07,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275444548] [2024-11-19 01:51:07,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:07,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:51:07,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:07,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:51:07,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:51:07,030 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-19 01:51:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 01:51:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-19 01:51:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:07,506 INFO L124 PetriNetUnfolderBase]: 2397/3638 cut-off events. [2024-11-19 01:51:07,506 INFO L125 PetriNetUnfolderBase]: For 617/617 co-relation queries the response was YES. [2024-11-19 01:51:07,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7569 conditions, 3638 events. 2397/3638 cut-off events. For 617/617 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 20719 event pairs, 549 based on Foata normal form. 84/3565 useless extension candidates. Maximal degree in co-relation 2645. Up to 2321 conditions per place. [2024-11-19 01:51:07,528 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 49 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-19 01:51:07,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 275 flow [2024-11-19 01:51:07,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:51:07,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:51:07,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-19 01:51:07,532 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7466666666666667 [2024-11-19 01:51:07,532 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 117 flow. Second operand 3 states and 112 transitions. [2024-11-19 01:51:07,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 275 flow [2024-11-19 01:51:07,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 68 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:07,535 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 128 flow [2024-11-19 01:51:07,536 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-11-19 01:51:07,536 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-19 01:51:07,536 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 128 flow [2024-11-19 01:51:07,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 01:51:07,537 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:07,537 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:07,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:51:07,538 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:07,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash -74657177, now seen corresponding path program 1 times [2024-11-19 01:51:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:07,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029614725] [2024-11-19 01:51:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 01:51:07,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029614725] [2024-11-19 01:51:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029614725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:07,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:07,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 01:51:07,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581845751] [2024-11-19 01:51:07,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:07,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:51:07,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:07,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:51:07,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:51:07,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-19 01:51:07,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 01:51:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-19 01:51:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:08,087 INFO L124 PetriNetUnfolderBase]: 2362/3753 cut-off events. [2024-11-19 01:51:08,087 INFO L125 PetriNetUnfolderBase]: For 1405/1405 co-relation queries the response was YES. [2024-11-19 01:51:08,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8159 conditions, 3753 events. 2362/3753 cut-off events. For 1405/1405 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22732 event pairs, 571 based on Foata normal form. 35/3626 useless extension candidates. Maximal degree in co-relation 5968. Up to 2334 conditions per place. [2024-11-19 01:51:08,105 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 49 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-19 01:51:08,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 68 transitions, 291 flow [2024-11-19 01:51:08,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:51:08,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-19 01:51:08,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-19 01:51:08,108 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-11-19 01:51:08,108 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 128 flow. Second operand 3 states and 110 transitions. [2024-11-19 01:51:08,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 68 transitions, 291 flow [2024-11-19 01:51:08,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:08,111 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 140 flow [2024-11-19 01:51:08,111 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-19 01:51:08,114 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-19 01:51:08,115 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 140 flow [2024-11-19 01:51:08,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 01:51:08,115 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:08,115 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:08,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:51:08,116 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:08,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash -145993112, now seen corresponding path program 1 times [2024-11-19 01:51:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:08,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558743111] [2024-11-19 01:51:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:08,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:08,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:08,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:08,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558743111] [2024-11-19 01:51:08,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558743111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:08,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:08,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:51:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419502673] [2024-11-19 01:51:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:08,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:51:08,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:08,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:51:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:51:08,277 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-19 01:51:08,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 01:51:08,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:08,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-19 01:51:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:08,613 INFO L124 PetriNetUnfolderBase]: 2793/4440 cut-off events. [2024-11-19 01:51:08,614 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2024-11-19 01:51:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10243 conditions, 4440 events. 2793/4440 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29367 event pairs, 2080 based on Foata normal form. 93/4057 useless extension candidates. Maximal degree in co-relation 4760. Up to 3077 conditions per place. [2024-11-19 01:51:08,637 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-19 01:51:08,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 331 flow [2024-11-19 01:51:08,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:51:08,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:51:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-19 01:51:08,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.685 [2024-11-19 01:51:08,639 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 140 flow. Second operand 4 states and 137 transitions. [2024-11-19 01:51:08,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 331 flow [2024-11-19 01:51:08,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:08,643 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 158 flow [2024-11-19 01:51:08,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-19 01:51:08,644 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-19 01:51:08,644 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 158 flow [2024-11-19 01:51:08,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 01:51:08,645 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:08,645 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:08,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:51:08,645 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:08,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:08,646 INFO L85 PathProgramCache]: Analyzing trace with hash -745152938, now seen corresponding path program 1 times [2024-11-19 01:51:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665177878] [2024-11-19 01:51:08,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:08,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:08,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665177878] [2024-11-19 01:51:08,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665177878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:08,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:08,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:51:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725595537] [2024-11-19 01:51:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:08,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:51:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:51:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:51:08,750 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-19 01:51:08,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 01:51:08,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:08,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-19 01:51:08,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:09,172 INFO L124 PetriNetUnfolderBase]: 3453/5659 cut-off events. [2024-11-19 01:51:09,172 INFO L125 PetriNetUnfolderBase]: For 2900/2900 co-relation queries the response was YES. [2024-11-19 01:51:09,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12770 conditions, 5659 events. 3453/5659 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40420 event pairs, 2644 based on Foata normal form. 132/5190 useless extension candidates. Maximal degree in co-relation 10432. Up to 3841 conditions per place. [2024-11-19 01:51:09,195 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 54 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-19 01:51:09,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 346 flow [2024-11-19 01:51:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:51:09,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-19 01:51:09,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-19 01:51:09,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-19 01:51:09,197 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 158 flow. Second operand 4 states and 135 transitions. [2024-11-19 01:51:09,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 346 flow [2024-11-19 01:51:09,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:09,200 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2024-11-19 01:51:09,200 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-19 01:51:09,200 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-19 01:51:09,201 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2024-11-19 01:51:09,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 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 01:51:09,201 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:09,201 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:09,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:51:09,201 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:09,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:09,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2121825037, now seen corresponding path program 1 times [2024-11-19 01:51:09,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:09,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856205573] [2024-11-19 01:51:09,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:09,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:09,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:51:09,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:09,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856205573] [2024-11-19 01:51:09,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856205573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:09,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:09,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:51:09,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258336542] [2024-11-19 01:51:09,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:09,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:51:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:51:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:51:09,516 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:09,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:09,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:09,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:09,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:11,486 INFO L124 PetriNetUnfolderBase]: 11369/16416 cut-off events. [2024-11-19 01:51:11,486 INFO L125 PetriNetUnfolderBase]: For 7768/7768 co-relation queries the response was YES. [2024-11-19 01:51:11,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38869 conditions, 16416 events. 11369/16416 cut-off events. For 7768/7768 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 108455 event pairs, 627 based on Foata normal form. 384/15859 useless extension candidates. Maximal degree in co-relation 31859. Up to 10097 conditions per place. [2024-11-19 01:51:11,565 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 11 changer transitions 3/143 dead transitions. [2024-11-19 01:51:11,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 143 transitions, 731 flow [2024-11-19 01:51:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:51:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:51:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-11-19 01:51:11,567 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6542857142857142 [2024-11-19 01:51:11,567 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 7 states and 229 transitions. [2024-11-19 01:51:11,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 143 transitions, 731 flow [2024-11-19 01:51:11,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 143 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:11,575 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 245 flow [2024-11-19 01:51:11,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-19 01:51:11,577 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2024-11-19 01:51:11,578 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 245 flow [2024-11-19 01:51:11,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:11,579 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:11,579 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:11,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:51:11,580 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:11,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:11,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1575763873, now seen corresponding path program 2 times [2024-11-19 01:51:11,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:11,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651408008] [2024-11-19 01:51:11,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:11,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:11,627 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:11,629 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:51:12,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:12,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651408008] [2024-11-19 01:51:12,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651408008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:12,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:12,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:51:12,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829682964] [2024-11-19 01:51:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:12,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:51:12,188 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:12,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 245 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 01:51:12,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:12,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:12,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:14,051 INFO L124 PetriNetUnfolderBase]: 11509/17404 cut-off events. [2024-11-19 01:51:14,051 INFO L125 PetriNetUnfolderBase]: For 13716/13744 co-relation queries the response was YES. [2024-11-19 01:51:14,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47023 conditions, 17404 events. 11509/17404 cut-off events. For 13716/13744 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 121313 event pairs, 1921 based on Foata normal form. 56/17305 useless extension candidates. Maximal degree in co-relation 38104. Up to 11761 conditions per place. [2024-11-19 01:51:14,129 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 85 selfloop transitions, 12 changer transitions 18/127 dead transitions. [2024-11-19 01:51:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 698 flow [2024-11-19 01:51:14,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:51:14,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:51:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-11-19 01:51:14,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-11-19 01:51:14,131 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 245 flow. Second operand 6 states and 194 transitions. [2024-11-19 01:51:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 698 flow [2024-11-19 01:51:14,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 127 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:51:14,145 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 312 flow [2024-11-19 01:51:14,146 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-11-19 01:51:14,146 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2024-11-19 01:51:14,146 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 312 flow [2024-11-19 01:51:14,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 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 01:51:14,147 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:14,147 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:14,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:51:14,147 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:14,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:14,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1102731426, now seen corresponding path program 1 times [2024-11-19 01:51:14,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:14,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141317905] [2024-11-19 01:51:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:51:14,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:51:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:51:14,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:14,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141317905] [2024-11-19 01:51:14,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141317905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:14,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:14,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:51:14,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024036798] [2024-11-19 01:51:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:14,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:51:14,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:51:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:51:14,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:14,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:14,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:14,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:14,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:16,478 INFO L124 PetriNetUnfolderBase]: 13702/20151 cut-off events. [2024-11-19 01:51:16,478 INFO L125 PetriNetUnfolderBase]: For 25197/26055 co-relation queries the response was YES. [2024-11-19 01:51:16,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58910 conditions, 20151 events. 13702/20151 cut-off events. For 25197/26055 co-relation queries the response was YES. Maximal size of possible extension queue 1175. Compared 141549 event pairs, 1251 based on Foata normal form. 568/19484 useless extension candidates. Maximal degree in co-relation 47942. Up to 15918 conditions per place. [2024-11-19 01:51:16,571 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 87 selfloop transitions, 12 changer transitions 11/125 dead transitions. [2024-11-19 01:51:16,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 125 transitions, 736 flow [2024-11-19 01:51:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:51:16,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-19 01:51:16,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-11-19 01:51:16,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6233333333333333 [2024-11-19 01:51:16,575 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 312 flow. Second operand 6 states and 187 transitions. [2024-11-19 01:51:16,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 125 transitions, 736 flow [2024-11-19 01:51:16,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 715 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:16,604 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 403 flow [2024-11-19 01:51:16,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-11-19 01:51:16,605 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 32 predicate places. [2024-11-19 01:51:16,605 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 403 flow [2024-11-19 01:51:16,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:16,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:16,605 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:16,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:51:16,606 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:16,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2066791592, now seen corresponding path program 2 times [2024-11-19 01:51:16,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:16,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026207823] [2024-11-19 01:51:16,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 01:51:16,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:16,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 01:51:16,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:16,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:16,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:16,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026207823] [2024-11-19 01:51:16,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026207823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:16,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:16,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:51:16,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641098668] [2024-11-19 01:51:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:16,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:16,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:16,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:51:16,946 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-19 01:51:16,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 403 flow. Second operand has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:51:16,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:16,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-19 01:51:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:20,415 INFO L124 PetriNetUnfolderBase]: 21615/31220 cut-off events. [2024-11-19 01:51:20,415 INFO L125 PetriNetUnfolderBase]: For 35766/35860 co-relation queries the response was YES. [2024-11-19 01:51:20,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92394 conditions, 31220 events. 21615/31220 cut-off events. For 35766/35860 co-relation queries the response was YES. Maximal size of possible extension queue 1778. Compared 222128 event pairs, 2108 based on Foata normal form. 442/31407 useless extension candidates. Maximal degree in co-relation 72477. Up to 15619 conditions per place. [2024-11-19 01:51:20,753 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 176 selfloop transitions, 28 changer transitions 7/223 dead transitions. [2024-11-19 01:51:20,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 223 transitions, 1411 flow [2024-11-19 01:51:20,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:51:20,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-19 01:51:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 327 transitions. [2024-11-19 01:51:20,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654 [2024-11-19 01:51:20,756 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 403 flow. Second operand 10 states and 327 transitions. [2024-11-19 01:51:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 223 transitions, 1411 flow [2024-11-19 01:51:20,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 223 transitions, 1411 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-19 01:51:20,994 INFO L231 Difference]: Finished difference. Result has 99 places, 90 transitions, 609 flow [2024-11-19 01:51:20,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=609, PETRI_PLACES=99, PETRI_TRANSITIONS=90} [2024-11-19 01:51:20,995 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 47 predicate places. [2024-11-19 01:51:20,995 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 90 transitions, 609 flow [2024-11-19 01:51:20,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.142857142857142) internal successors, (134), 7 states have internal predecessors, (134), 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 01:51:20,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:20,996 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:20,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:51:20,996 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:20,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 936976234, now seen corresponding path program 3 times [2024-11-19 01:51:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540251456] [2024-11-19 01:51:20,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 01:51:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:21,062 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-19 01:51:21,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:21,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:51:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540251456] [2024-11-19 01:51:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540251456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:21,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:21,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:51:21,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596057206] [2024-11-19 01:51:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:21,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:51:21,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:51:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:51:21,482 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:21,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 90 transitions, 609 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:21,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:21,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:21,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:24,714 INFO L124 PetriNetUnfolderBase]: 21701/32090 cut-off events. [2024-11-19 01:51:24,715 INFO L125 PetriNetUnfolderBase]: For 70494/70606 co-relation queries the response was YES. [2024-11-19 01:51:25,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108407 conditions, 32090 events. 21701/32090 cut-off events. For 70494/70606 co-relation queries the response was YES. Maximal size of possible extension queue 1837. Compared 238970 event pairs, 3150 based on Foata normal form. 394/32187 useless extension candidates. Maximal degree in co-relation 86473. Up to 12605 conditions per place. [2024-11-19 01:51:25,227 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 137 selfloop transitions, 48 changer transitions 3/204 dead transitions. [2024-11-19 01:51:25,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 204 transitions, 1558 flow [2024-11-19 01:51:25,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:51:25,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:51:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2024-11-19 01:51:25,229 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-19 01:51:25,229 INFO L175 Difference]: Start difference. First operand has 99 places, 90 transitions, 609 flow. Second operand 8 states and 260 transitions. [2024-11-19 01:51:25,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 204 transitions, 1558 flow [2024-11-19 01:51:25,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 204 transitions, 1534 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:25,707 INFO L231 Difference]: Finished difference. Result has 109 places, 112 transitions, 949 flow [2024-11-19 01:51:25,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=949, PETRI_PLACES=109, PETRI_TRANSITIONS=112} [2024-11-19 01:51:25,707 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 57 predicate places. [2024-11-19 01:51:25,708 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 112 transitions, 949 flow [2024-11-19 01:51:25,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:25,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:25,708 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:25,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:51:25,708 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:25,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1926325520, now seen corresponding path program 4 times [2024-11-19 01:51:25,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:25,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440778062] [2024-11-19 01:51:25,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:25,727 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:25,727 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440778062] [2024-11-19 01:51:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440778062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491398437] [2024-11-19 01:51:25,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-19 01:51:25,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:25,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:25,858 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 01:51:25,858 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 01:51:25,987 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-19 01:51:25,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:25,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 01:51:26,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 01:51:26,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:51:26,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491398437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:26,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:51:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-19 01:51:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90362629] [2024-11-19 01:51:26,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:26,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:51:26,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:26,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:51:26,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:51:26,291 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:26,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 112 transitions, 949 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:26,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:26,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:26,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:30,640 INFO L124 PetriNetUnfolderBase]: 22577/33556 cut-off events. [2024-11-19 01:51:30,640 INFO L125 PetriNetUnfolderBase]: For 100654/100790 co-relation queries the response was YES. [2024-11-19 01:51:30,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124105 conditions, 33556 events. 22577/33556 cut-off events. For 100654/100790 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 255236 event pairs, 4352 based on Foata normal form. 296/33436 useless extension candidates. Maximal degree in co-relation 98646. Up to 10784 conditions per place. [2024-11-19 01:51:30,901 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 157 selfloop transitions, 34 changer transitions 6/213 dead transitions. [2024-11-19 01:51:30,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 213 transitions, 1827 flow [2024-11-19 01:51:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:51:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-19 01:51:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-11-19 01:51:30,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6714285714285714 [2024-11-19 01:51:30,905 INFO L175 Difference]: Start difference. First operand has 109 places, 112 transitions, 949 flow. Second operand 7 states and 235 transitions. [2024-11-19 01:51:30,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 213 transitions, 1827 flow [2024-11-19 01:51:32,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 213 transitions, 1797 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-11-19 01:51:32,016 INFO L231 Difference]: Finished difference. Result has 118 places, 116 transitions, 1103 flow [2024-11-19 01:51:32,017 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1103, PETRI_PLACES=118, PETRI_TRANSITIONS=116} [2024-11-19 01:51:32,017 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-11-19 01:51:32,017 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 116 transitions, 1103 flow [2024-11-19 01:51:32,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 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 01:51:32,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:32,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:32,031 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 01:51:32,218 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,SelfDestructingSolverStorable10 [2024-11-19 01:51:32,219 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:32,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:32,220 INFO L85 PathProgramCache]: Analyzing trace with hash -126618396, now seen corresponding path program 5 times [2024-11-19 01:51:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:32,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991743656] [2024-11-19 01:51:32,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:51:32,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:32,246 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:51:32,247 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:32,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991743656] [2024-11-19 01:51:32,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991743656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:51:32,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399478196] [2024-11-19 01:51:32,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-19 01:51:32,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:51:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:51:32,462 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 01:51:32,463 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 01:51:32,578 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-19 01:51:32,578 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:32,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 01:51:32,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:51:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:32,710 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:51:32,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:32,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399478196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 01:51:32,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 01:51:32,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2024-11-19 01:51:32,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480336983] [2024-11-19 01:51:32,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 01:51:32,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:51:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:32,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:51:32,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:51:32,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-19 01:51:32,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 116 transitions, 1103 flow. Second operand has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 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 01:51:32,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:32,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-19 01:51:32,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:51:41,475 INFO L124 PetriNetUnfolderBase]: 47945/68801 cut-off events. [2024-11-19 01:51:41,476 INFO L125 PetriNetUnfolderBase]: For 279815/280167 co-relation queries the response was YES. [2024-11-19 01:51:41,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270199 conditions, 68801 events. 47945/68801 cut-off events. For 279815/280167 co-relation queries the response was YES. Maximal size of possible extension queue 3923. Compared 534313 event pairs, 2205 based on Foata normal form. 2208/70721 useless extension candidates. Maximal degree in co-relation 216052. Up to 9078 conditions per place. [2024-11-19 01:51:42,316 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 361 selfloop transitions, 127 changer transitions 5/513 dead transitions. [2024-11-19 01:51:42,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 513 transitions, 5498 flow [2024-11-19 01:51:42,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 01:51:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-19 01:51:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 529 transitions. [2024-11-19 01:51:42,324 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5568421052631579 [2024-11-19 01:51:42,324 INFO L175 Difference]: Start difference. First operand has 118 places, 116 transitions, 1103 flow. Second operand 19 states and 529 transitions. [2024-11-19 01:51:42,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 513 transitions, 5498 flow [2024-11-19 01:51:48,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 513 transitions, 5375 flow, removed 57 selfloop flow, removed 2 redundant places. [2024-11-19 01:51:48,737 INFO L231 Difference]: Finished difference. Result has 143 places, 214 transitions, 2336 flow [2024-11-19 01:51:48,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2336, PETRI_PLACES=143, PETRI_TRANSITIONS=214} [2024-11-19 01:51:48,738 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 91 predicate places. [2024-11-19 01:51:48,738 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 214 transitions, 2336 flow [2024-11-19 01:51:48,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 19.153846153846153) internal successors, (249), 13 states have internal predecessors, (249), 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 01:51:48,738 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-19 01:51:48,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:51:48,752 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 01:51:48,942 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,SelfDestructingSolverStorable11 [2024-11-19 01:51:48,943 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-19 01:51:48,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:51:48,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2112105836, now seen corresponding path program 6 times [2024-11-19 01:51:48,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:51:48,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874586368] [2024-11-19 01:51:48,943 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-19 01:51:48,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:51:48,958 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-19 01:51:48,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 01:51:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 01:51:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:51:49,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874586368] [2024-11-19 01:51:49,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874586368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:51:49,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:51:49,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:51:49,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968973735] [2024-11-19 01:51:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:51:49,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:51:49,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:51:49,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:51:49,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:51:49,266 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-19 01:51:49,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 214 transitions, 2336 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 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 01:51:49,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-19 01:51:49,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-19 01:51:49,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-19 01:52:03,118 INFO L124 PetriNetUnfolderBase]: 62871/94276 cut-off events. [2024-11-19 01:52:03,118 INFO L125 PetriNetUnfolderBase]: For 531199/536863 co-relation queries the response was YES. [2024-11-19 01:52:03,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424964 conditions, 94276 events. 62871/94276 cut-off events. For 531199/536863 co-relation queries the response was YES. Maximal size of possible extension queue 4085. Compared 776757 event pairs, 7109 based on Foata normal form. 2888/95292 useless extension candidates. Maximal degree in co-relation 341082. Up to 67372 conditions per place. [2024-11-19 01:52:04,133 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 214 selfloop transitions, 80 changer transitions 53/411 dead transitions. [2024-11-19 01:52:04,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 411 transitions, 5245 flow [2024-11-19 01:52:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:52:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-19 01:52:04,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-11-19 01:52:04,135 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6225 [2024-11-19 01:52:04,135 INFO L175 Difference]: Start difference. First operand has 143 places, 214 transitions, 2336 flow. Second operand 8 states and 249 transitions. [2024-11-19 01:52:04,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 411 transitions, 5245 flow