./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:47:58,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:47:58,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:47:58,590 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:47:58,590 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:47:58,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:47:58,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:47:58,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:47:58,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:47:58,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:47:58,620 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:47:58,620 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:47:58,621 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:47:58,622 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:47:58,622 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:47:58,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:47:58,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:47:58,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:47:58,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:47:58,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:47:58,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:47:58,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:47:58,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:47:58,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:47:58,626 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:47:58,626 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:47:58,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:47:58,627 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:47:58,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:47:58,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:47:58,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:47:58,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:47:58,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:47:58,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:47:58,629 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:47:58,629 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:47:58,629 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:47:58,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:47:58,630 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:47:58,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:47:58,630 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:47:58,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:47:58,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:47:58,631 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-01-27 15:47:58,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:47:58,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:47:58,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:47:58,884 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:47:58,884 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:47:58,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-01-27 15:47:59,999 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:48:00,207 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:48:00,208 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-01-27 15:48:00,216 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43719e4d/b1049c8b66fb4091baee67480b81b75f/FLAG4d7fa1409 [2024-01-27 15:48:00,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c43719e4d/b1049c8b66fb4091baee67480b81b75f [2024-01-27 15:48:00,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:48:00,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:48:00,231 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:48:00,231 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:48:00,234 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:48:00,235 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,235 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70a39afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00, skipping insertion in model container [2024-01-27 15:48:00,235 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:48:00,399 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-01-27 15:48:00,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:48:00,416 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:48:00,435 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2024-01-27 15:48:00,439 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:48:00,451 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:48:00,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00 WrapperNode [2024-01-27 15:48:00,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:48:00,452 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:48:00,452 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:48:00,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:48:00,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,487 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 270 [2024-01-27 15:48:00,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:48:00,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:48:00,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:48:00,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:48:00,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,524 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,538 INFO L175 MemorySlicer]: Split 15 memory accesses to 5 slices as follows [2, 7, 2, 2, 2]. 47 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 5 writes are split as follows [0, 2, 1, 1, 1]. [2024-01-27 15:48:00,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,571 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,573 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:48:00,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:48:00,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:48:00,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:48:00,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (1/1) ... [2024-01-27 15:48:00,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:48:00,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:48:00,614 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) [2024-01-27 15:48:00,624 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 [2024-01-27 15:48:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:48:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:48:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:48:00,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:48:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:48:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:48:00,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:48:00,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:48:00,663 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:48:00,663 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:48:00,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:48:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:48:00,664 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:48:00,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:48:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:48:00,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:48:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:48:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:48:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:48:00,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:48:00,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:48:00,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:48:00,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:48:00,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:48:00,669 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:48:00,788 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:48:00,790 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:48:01,112 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:48:01,113 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:48:01,364 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:48:01,365 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-27 15:48:01,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:48:01 BoogieIcfgContainer [2024-01-27 15:48:01,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:48:01,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:48:01,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:48:01,369 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:48:01,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:48:00" (1/3) ... [2024-01-27 15:48:01,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:48:01, skipping insertion in model container [2024-01-27 15:48:01,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:48:00" (2/3) ... [2024-01-27 15:48:01,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544604 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:48:01, skipping insertion in model container [2024-01-27 15:48:01,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:48:01" (3/3) ... [2024-01-27 15:48:01,372 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-01-27 15:48:01,404 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:48:01,411 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:48:01,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:48:01,412 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:48:01,504 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:48:01,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 113 flow [2024-01-27 15:48:01,560 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-01-27 15:48:01,561 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:48:01,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 43 events. 7/43 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-01-27 15:48:01,565 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 113 flow [2024-01-27 15:48:01,570 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 42 transitions, 102 flow [2024-01-27 15:48:01,577 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:48:01,582 INFO L357 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, mHoare=true, 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;@4a053f2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:48:01,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:48:01,596 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:48:01,596 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2024-01-27 15:48:01,596 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:48:01,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:01,597 INFO L208 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] [2024-01-27 15:48:01,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:01,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1512367794, now seen corresponding path program 1 times [2024-01-27 15:48:01,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:01,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315850114] [2024-01-27 15:48:01,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:01,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:48:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315850114] [2024-01-27 15:48:01,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315850114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:01,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:01,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:48:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530424160] [2024-01-27 15:48:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:01,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-01-27 15:48:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:01,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-01-27 15:48:01,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-01-27 15:48:01,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:48:01,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2024-01-27 15:48:01,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:01,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:48:01,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:02,120 INFO L124 PetriNetUnfolderBase]: 1141/1823 cut-off events. [2024-01-27 15:48:02,120 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-01-27 15:48:02,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3490 conditions, 1823 events. 1141/1823 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8692 event pairs, 945 based on Foata normal form. 168/1850 useless extension candidates. Maximal degree in co-relation 3078. Up to 1541 conditions per place. [2024-01-27 15:48:02,132 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 32 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2024-01-27 15:48:02,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 162 flow [2024-01-27 15:48:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-01-27 15:48:02,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-01-27 15:48:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2024-01-27 15:48:02,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-01-27 15:48:02,143 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 102 flow. Second operand 2 states and 56 transitions. [2024-01-27 15:48:02,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 162 flow [2024-01-27 15:48:02,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:02,149 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 86 flow [2024-01-27 15:48:02,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-01-27 15:48:02,153 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2024-01-27 15:48:02,153 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 86 flow [2024-01-27 15:48:02,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 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) [2024-01-27 15:48:02,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:02,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:48:02,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:02,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:02,155 INFO L85 PathProgramCache]: Analyzing trace with hash 483062152, now seen corresponding path program 1 times [2024-01-27 15:48:02,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:02,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031821600] [2024-01-27 15:48:02,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:02,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:02,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:48:02,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:02,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031821600] [2024-01-27 15:48:02,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031821600] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:02,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:02,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:48:02,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146637608] [2024-01-27 15:48:02,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:02,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:48:02,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:02,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:48:02,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:48:02,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:48:02,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-01-27 15:48:02,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:02,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:48:02,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:02,483 INFO L124 PetriNetUnfolderBase]: 1033/1727 cut-off events. [2024-01-27 15:48:02,483 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-01-27 15:48:02,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3231 conditions, 1727 events. 1033/1727 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8498 event pairs, 319 based on Foata normal form. 42/1664 useless extension candidates. Maximal degree in co-relation 3228. Up to 1109 conditions per place. [2024-01-27 15:48:02,492 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-01-27 15:48:02,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 208 flow [2024-01-27 15:48:02,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:48:02,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:48:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-01-27 15:48:02,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2024-01-27 15:48:02,495 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 86 flow. Second operand 3 states and 80 transitions. [2024-01-27 15:48:02,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 208 flow [2024-01-27 15:48:02,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:48:02,501 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 98 flow [2024-01-27 15:48:02,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2024-01-27 15:48:02,502 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2024-01-27 15:48:02,503 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 98 flow [2024-01-27 15:48:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-01-27 15:48:02,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:48:02,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:02,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:02,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1343573562, now seen corresponding path program 2 times [2024-01-27 15:48:02,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:02,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192950987] [2024-01-27 15:48:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:02,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:48:02,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192950987] [2024-01-27 15:48:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192950987] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:02,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:48:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894949690] [2024-01-27 15:48:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:02,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:48:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:48:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:48:02,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:48:02,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:02,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:02,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:48:02,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:02,851 INFO L124 PetriNetUnfolderBase]: 1082/1826 cut-off events. [2024-01-27 15:48:02,852 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-01-27 15:48:02,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3658 conditions, 1826 events. 1082/1826 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 9004 event pairs, 872 based on Foata normal form. 42/1763 useless extension candidates. Maximal degree in co-relation 3653. Up to 1453 conditions per place. [2024-01-27 15:48:02,861 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 32 selfloop transitions, 2 changer transitions 15/57 dead transitions. [2024-01-27 15:48:02,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 231 flow [2024-01-27 15:48:02,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:48:02,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:48:02,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-01-27 15:48:02,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2024-01-27 15:48:02,862 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 98 flow. Second operand 5 states and 106 transitions. [2024-01-27 15:48:02,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 231 flow [2024-01-27 15:48:02,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:48:02,864 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2024-01-27 15:48:02,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-01-27 15:48:02,865 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2024-01-27 15:48:02,865 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2024-01-27 15:48:02,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:02,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:02,865 INFO L208 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] [2024-01-27 15:48:02,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:48:02,866 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:02,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:02,866 INFO L85 PathProgramCache]: Analyzing trace with hash -2073841455, now seen corresponding path program 1 times [2024-01-27 15:48:02,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:02,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457039250] [2024-01-27 15:48:02,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:02,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:48:02,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:02,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457039250] [2024-01-27 15:48:02,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457039250] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:02,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:02,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:48:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656724791] [2024-01-27 15:48:02,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:48:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:48:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:48:02,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:48:02,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:02,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:02,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:48:02,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:03,151 INFO L124 PetriNetUnfolderBase]: 1240/2099 cut-off events. [2024-01-27 15:48:03,152 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2024-01-27 15:48:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4503 conditions, 2099 events. 1240/2099 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 10856 event pairs, 1012 based on Foata normal form. 40/2029 useless extension candidates. Maximal degree in co-relation 4495. Up to 1454 conditions per place. [2024-01-27 15:48:03,161 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 33 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2024-01-27 15:48:03,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 276 flow [2024-01-27 15:48:03,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:48:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:48:03,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-01-27 15:48:03,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-01-27 15:48:03,163 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 118 flow. Second operand 4 states and 96 transitions. [2024-01-27 15:48:03,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 276 flow [2024-01-27 15:48:03,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 264 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-27 15:48:03,165 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 124 flow [2024-01-27 15:48:03,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-01-27 15:48:03,166 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2024-01-27 15:48:03,166 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 124 flow [2024-01-27 15:48:03,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:03,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:03,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:48:03,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:03,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash -503728581, now seen corresponding path program 1 times [2024-01-27 15:48:03,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:03,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709185655] [2024-01-27 15:48:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:03,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:03,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709185655] [2024-01-27 15:48:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709185655] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:03,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197252046] [2024-01-27 15:48:03,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:03,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:03,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:03,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:04,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:04,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 124 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:04,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:04,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:04,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:04,584 INFO L124 PetriNetUnfolderBase]: 1699/2849 cut-off events. [2024-01-27 15:48:04,585 INFO L125 PetriNetUnfolderBase]: For 746/748 co-relation queries the response was YES. [2024-01-27 15:48:04,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 2849 events. 1699/2849 cut-off events. For 746/748 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 15857 event pairs, 122 based on Foata normal form. 1/2768 useless extension candidates. Maximal degree in co-relation 6232. Up to 1730 conditions per place. [2024-01-27 15:48:04,597 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 27 changer transitions 4/150 dead transitions. [2024-01-27 15:48:04,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 150 transitions, 711 flow [2024-01-27 15:48:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:04,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:04,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 261 transitions. [2024-01-27 15:48:04,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-01-27 15:48:04,599 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 124 flow. Second operand 12 states and 261 transitions. [2024-01-27 15:48:04,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 150 transitions, 711 flow [2024-01-27 15:48:04,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 150 transitions, 693 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-27 15:48:04,602 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 270 flow [2024-01-27 15:48:04,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2024-01-27 15:48:04,603 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2024-01-27 15:48:04,603 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 270 flow [2024-01-27 15:48:04,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:04,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:04,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:04,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:48:04,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:04,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:04,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1184087739, now seen corresponding path program 2 times [2024-01-27 15:48:04,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:04,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784779713] [2024-01-27 15:48:04,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:04,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784779713] [2024-01-27 15:48:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784779713] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:04,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:04,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:48:04,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290415240] [2024-01-27 15:48:04,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:04,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:48:04,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:04,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:48:04,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:48:04,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:48:04,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:04,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:04,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:48:04,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:04,836 INFO L124 PetriNetUnfolderBase]: 1307/2260 cut-off events. [2024-01-27 15:48:04,836 INFO L125 PetriNetUnfolderBase]: For 1331/1335 co-relation queries the response was YES. [2024-01-27 15:48:04,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5958 conditions, 2260 events. 1307/2260 cut-off events. For 1331/1335 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 11818 event pairs, 419 based on Foata normal form. 18/2214 useless extension candidates. Maximal degree in co-relation 5944. Up to 1846 conditions per place. [2024-01-27 15:48:04,847 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 63 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-01-27 15:48:04,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 421 flow [2024-01-27 15:48:04,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:48:04,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:48:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-01-27 15:48:04,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2024-01-27 15:48:04,848 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 270 flow. Second operand 3 states and 76 transitions. [2024-01-27 15:48:04,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 421 flow [2024-01-27 15:48:04,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-27 15:48:04,854 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 273 flow [2024-01-27 15:48:04,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=67} [2024-01-27 15:48:04,856 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2024-01-27 15:48:04,856 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 273 flow [2024-01-27 15:48:04,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:48:04,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:04,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:48:04,857 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:04,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:04,858 INFO L85 PathProgramCache]: Analyzing trace with hash -928025015, now seen corresponding path program 3 times [2024-01-27 15:48:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:04,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779126775] [2024-01-27 15:48:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:04,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:05,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779126775] [2024-01-27 15:48:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779126775] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:05,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:05,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615758644] [2024-01-27 15:48:05,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:05,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:05,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:05,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:05,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 67 transitions, 273 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:05,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:05,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:05,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:05,894 INFO L124 PetriNetUnfolderBase]: 1564/2697 cut-off events. [2024-01-27 15:48:05,894 INFO L125 PetriNetUnfolderBase]: For 2159/2162 co-relation queries the response was YES. [2024-01-27 15:48:05,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7479 conditions, 2697 events. 1564/2697 cut-off events. For 2159/2162 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 14894 event pairs, 355 based on Foata normal form. 1/2614 useless extension candidates. Maximal degree in co-relation 7464. Up to 1928 conditions per place. [2024-01-27 15:48:05,909 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 98 selfloop transitions, 28 changer transitions 4/137 dead transitions. [2024-01-27 15:48:05,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 798 flow [2024-01-27 15:48:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:05,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-01-27 15:48:05,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2024-01-27 15:48:05,911 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 273 flow. Second operand 11 states and 223 transitions. [2024-01-27 15:48:05,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 798 flow [2024-01-27 15:48:05,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 767 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-01-27 15:48:05,915 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 420 flow [2024-01-27 15:48:05,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=76, PETRI_TRANSITIONS=82} [2024-01-27 15:48:05,916 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2024-01-27 15:48:05,916 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 420 flow [2024-01-27 15:48:05,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:05,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:05,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:05,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:48:05,917 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:05,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:05,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1069946181, now seen corresponding path program 4 times [2024-01-27 15:48:05,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:05,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561924676] [2024-01-27 15:48:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:05,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:06,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:06,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561924676] [2024-01-27 15:48:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561924676] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070610243] [2024-01-27 15:48:06,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:06,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:06,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:06,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 82 transitions, 420 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:06,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:06,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:06,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:06,935 INFO L124 PetriNetUnfolderBase]: 1717/3017 cut-off events. [2024-01-27 15:48:06,935 INFO L125 PetriNetUnfolderBase]: For 3052/3054 co-relation queries the response was YES. [2024-01-27 15:48:06,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8501 conditions, 3017 events. 1717/3017 cut-off events. For 3052/3054 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 17357 event pairs, 493 based on Foata normal form. 1/2927 useless extension candidates. Maximal degree in co-relation 8483. Up to 2066 conditions per place. [2024-01-27 15:48:06,950 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 111 selfloop transitions, 34 changer transitions 4/156 dead transitions. [2024-01-27 15:48:06,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 1018 flow [2024-01-27 15:48:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-01-27 15:48:06,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-01-27 15:48:06,952 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 420 flow. Second operand 11 states and 232 transitions. [2024-01-27 15:48:06,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 1018 flow [2024-01-27 15:48:06,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 987 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-27 15:48:06,958 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 615 flow [2024-01-27 15:48:06,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=615, PETRI_PLACES=91, PETRI_TRANSITIONS=96} [2024-01-27 15:48:06,959 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2024-01-27 15:48:06,959 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 615 flow [2024-01-27 15:48:06,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:06,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:06,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:06,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-27 15:48:06,960 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:06,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2031473719, now seen corresponding path program 5 times [2024-01-27 15:48:06,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:06,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466555549] [2024-01-27 15:48:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:06,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466555549] [2024-01-27 15:48:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466555549] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:07,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758866611] [2024-01-27 15:48:07,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:07,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:07,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:07,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 96 transitions, 615 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:07,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:07,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:07,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:08,251 INFO L124 PetriNetUnfolderBase]: 1953/3461 cut-off events. [2024-01-27 15:48:08,268 INFO L125 PetriNetUnfolderBase]: For 6435/6451 co-relation queries the response was YES. [2024-01-27 15:48:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 3461 events. 1953/3461 cut-off events. For 6435/6451 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20948 event pairs, 373 based on Foata normal form. 5/3358 useless extension candidates. Maximal degree in co-relation 10767. Up to 2100 conditions per place. [2024-01-27 15:48:08,284 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 45 changer transitions 4/184 dead transitions. [2024-01-27 15:48:08,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 1310 flow [2024-01-27 15:48:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:08,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:08,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2024-01-27 15:48:08,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2024-01-27 15:48:08,302 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 615 flow. Second operand 12 states and 260 transitions. [2024-01-27 15:48:08,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 1310 flow [2024-01-27 15:48:08,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 1280 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-01-27 15:48:08,311 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 772 flow [2024-01-27 15:48:08,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=104, PETRI_TRANSITIONS=105} [2024-01-27 15:48:08,311 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2024-01-27 15:48:08,312 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 772 flow [2024-01-27 15:48:08,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:08,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:08,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:08,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-27 15:48:08,312 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:08,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:08,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2065098403, now seen corresponding path program 6 times [2024-01-27 15:48:08,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:08,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772634185] [2024-01-27 15:48:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:08,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:08,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772634185] [2024-01-27 15:48:08,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772634185] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:08,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:08,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988106212] [2024-01-27 15:48:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:08,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:08,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:08,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:08,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:08,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 105 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:08,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:08,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:08,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:09,388 INFO L124 PetriNetUnfolderBase]: 2102/3766 cut-off events. [2024-01-27 15:48:09,388 INFO L125 PetriNetUnfolderBase]: For 9692/9708 co-relation queries the response was YES. [2024-01-27 15:48:09,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12481 conditions, 3766 events. 2102/3766 cut-off events. For 9692/9708 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23613 event pairs, 505 based on Foata normal form. 5/3652 useless extension candidates. Maximal degree in co-relation 12451. Up to 2569 conditions per place. [2024-01-27 15:48:09,413 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 133 selfloop transitions, 41 changer transitions 4/185 dead transitions. [2024-01-27 15:48:09,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 185 transitions, 1467 flow [2024-01-27 15:48:09,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2024-01-27 15:48:09,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2024-01-27 15:48:09,415 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 772 flow. Second operand 12 states and 254 transitions. [2024-01-27 15:48:09,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 185 transitions, 1467 flow [2024-01-27 15:48:09,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 1376 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:09,432 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 850 flow [2024-01-27 15:48:09,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=850, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-01-27 15:48:09,433 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2024-01-27 15:48:09,433 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 850 flow [2024-01-27 15:48:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:09,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-27 15:48:09,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:09,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1014326441, now seen corresponding path program 7 times [2024-01-27 15:48:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291908732] [2024-01-27 15:48:09,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:09,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:09,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291908732] [2024-01-27 15:48:09,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291908732] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:09,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:09,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:09,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76115932] [2024-01-27 15:48:09,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:09,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:09,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:09,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:09,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:09,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:09,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:09,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:09,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:09,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:10,587 INFO L124 PetriNetUnfolderBase]: 2102/3764 cut-off events. [2024-01-27 15:48:10,588 INFO L125 PetriNetUnfolderBase]: For 11890/11922 co-relation queries the response was YES. [2024-01-27 15:48:10,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12846 conditions, 3764 events. 2102/3764 cut-off events. For 11890/11922 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23620 event pairs, 533 based on Foata normal form. 21/3662 useless extension candidates. Maximal degree in co-relation 12812. Up to 2688 conditions per place. [2024-01-27 15:48:10,619 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 40 changer transitions 4/179 dead transitions. [2024-01-27 15:48:10,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1484 flow [2024-01-27 15:48:10,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-01-27 15:48:10,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2024-01-27 15:48:10,622 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 850 flow. Second operand 12 states and 244 transitions. [2024-01-27 15:48:10,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1484 flow [2024-01-27 15:48:10,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 179 transitions, 1375 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-01-27 15:48:10,638 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 872 flow [2024-01-27 15:48:10,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=872, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2024-01-27 15:48:10,639 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2024-01-27 15:48:10,639 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 872 flow [2024-01-27 15:48:10,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:10,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:10,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:10,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-27 15:48:10,640 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:10,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1332248511, now seen corresponding path program 8 times [2024-01-27 15:48:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:10,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922054648] [2024-01-27 15:48:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:11,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:11,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:11,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922054648] [2024-01-27 15:48:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922054648] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:11,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:11,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:11,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911628071] [2024-01-27 15:48:11,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:11,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:11,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:11,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:11,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:11,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:11,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 872 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:11,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:11,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:11,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:11,961 INFO L124 PetriNetUnfolderBase]: 2288/4091 cut-off events. [2024-01-27 15:48:11,962 INFO L125 PetriNetUnfolderBase]: For 12890/12922 co-relation queries the response was YES. [2024-01-27 15:48:11,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13961 conditions, 4091 events. 2288/4091 cut-off events. For 12890/12922 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26105 event pairs, 785 based on Foata normal form. 9/3967 useless extension candidates. Maximal degree in co-relation 13924. Up to 3033 conditions per place. [2024-01-27 15:48:11,983 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 36 changer transitions 4/182 dead transitions. [2024-01-27 15:48:11,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 1579 flow [2024-01-27 15:48:11,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:11,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2024-01-27 15:48:11,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44861660079051385 [2024-01-27 15:48:11,985 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 872 flow. Second operand 11 states and 227 transitions. [2024-01-27 15:48:11,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 1579 flow [2024-01-27 15:48:11,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 1485 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-27 15:48:12,001 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 997 flow [2024-01-27 15:48:12,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=997, PETRI_PLACES=123, PETRI_TRANSITIONS=123} [2024-01-27 15:48:12,002 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2024-01-27 15:48:12,002 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 997 flow [2024-01-27 15:48:12,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:12,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:12,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:12,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-27 15:48:12,003 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:12,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash 477489597, now seen corresponding path program 9 times [2024-01-27 15:48:12,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:12,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617934540] [2024-01-27 15:48:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:12,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:12,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:12,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:12,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617934540] [2024-01-27 15:48:12,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617934540] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:12,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:12,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014547619] [2024-01-27 15:48:12,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:12,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:12,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:12,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:12,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:12,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 123 transitions, 997 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:12,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:12,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:12,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:13,161 INFO L124 PetriNetUnfolderBase]: 2462/4426 cut-off events. [2024-01-27 15:48:13,161 INFO L125 PetriNetUnfolderBase]: For 22125/22165 co-relation queries the response was YES. [2024-01-27 15:48:13,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16144 conditions, 4426 events. 2462/4426 cut-off events. For 22125/22165 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29049 event pairs, 887 based on Foata normal form. 11/4298 useless extension candidates. Maximal degree in co-relation 16103. Up to 3310 conditions per place. [2024-01-27 15:48:13,192 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 36 changer transitions 4/194 dead transitions. [2024-01-27 15:48:13,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 194 transitions, 1762 flow [2024-01-27 15:48:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-01-27 15:48:13,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-01-27 15:48:13,194 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 997 flow. Second operand 11 states and 230 transitions. [2024-01-27 15:48:13,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 194 transitions, 1762 flow [2024-01-27 15:48:13,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 1648 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:13,220 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1091 flow [2024-01-27 15:48:13,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=883, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1091, PETRI_PLACES=131, PETRI_TRANSITIONS=132} [2024-01-27 15:48:13,221 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2024-01-27 15:48:13,221 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1091 flow [2024-01-27 15:48:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:13,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:13,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:13,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-27 15:48:13,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1545934987, now seen corresponding path program 10 times [2024-01-27 15:48:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299362315] [2024-01-27 15:48:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:13,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:13,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299362315] [2024-01-27 15:48:13,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299362315] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:13,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:13,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:13,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727157604] [2024-01-27 15:48:13,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:13,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:13,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:13,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 132 transitions, 1091 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:13,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:13,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:13,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:14,459 INFO L124 PetriNetUnfolderBase]: 2672/4778 cut-off events. [2024-01-27 15:48:14,459 INFO L125 PetriNetUnfolderBase]: For 28968/29032 co-relation queries the response was YES. [2024-01-27 15:48:14,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18180 conditions, 4778 events. 2672/4778 cut-off events. For 28968/29032 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31807 event pairs, 977 based on Foata normal form. 9/4633 useless extension candidates. Maximal degree in co-relation 18135. Up to 3593 conditions per place. [2024-01-27 15:48:14,486 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 153 selfloop transitions, 37 changer transitions 4/201 dead transitions. [2024-01-27 15:48:14,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 1899 flow [2024-01-27 15:48:14,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-01-27 15:48:14,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-01-27 15:48:14,488 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1091 flow. Second operand 11 states and 231 transitions. [2024-01-27 15:48:14,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 1899 flow [2024-01-27 15:48:14,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 201 transitions, 1773 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:14,518 INFO L231 Difference]: Finished difference. Result has 139 places, 139 transitions, 1187 flow [2024-01-27 15:48:14,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1187, PETRI_PLACES=139, PETRI_TRANSITIONS=139} [2024-01-27 15:48:14,519 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-01-27 15:48:14,519 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 139 transitions, 1187 flow [2024-01-27 15:48:14,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:14,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:14,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:14,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-27 15:48:14,520 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:14,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:14,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1779091535, now seen corresponding path program 11 times [2024-01-27 15:48:14,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:14,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233172755] [2024-01-27 15:48:14,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:14,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:14,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:14,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:14,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233172755] [2024-01-27 15:48:14,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233172755] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:14,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:14,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:14,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421008735] [2024-01-27 15:48:14,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:14,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:14,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:14,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:14,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:14,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:14,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 139 transitions, 1187 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:14,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:14,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:14,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:15,612 INFO L124 PetriNetUnfolderBase]: 2746/4905 cut-off events. [2024-01-27 15:48:15,612 INFO L125 PetriNetUnfolderBase]: For 35399/35527 co-relation queries the response was YES. [2024-01-27 15:48:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19018 conditions, 4905 events. 2746/4905 cut-off events. For 35399/35527 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32908 event pairs, 1113 based on Foata normal form. 23/4776 useless extension candidates. Maximal degree in co-relation 18969. Up to 3889 conditions per place. [2024-01-27 15:48:15,645 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 36 changer transitions 5/193 dead transitions. [2024-01-27 15:48:15,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 1847 flow [2024-01-27 15:48:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-01-27 15:48:15,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2024-01-27 15:48:15,646 INFO L175 Difference]: Start difference. First operand has 139 places, 139 transitions, 1187 flow. Second operand 11 states and 216 transitions. [2024-01-27 15:48:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 1847 flow [2024-01-27 15:48:15,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 1715 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:15,689 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 1222 flow [2024-01-27 15:48:15,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1055, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1222, PETRI_PLACES=146, PETRI_TRANSITIONS=145} [2024-01-27 15:48:15,689 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2024-01-27 15:48:15,690 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 1222 flow [2024-01-27 15:48:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:15,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:15,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:15,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-27 15:48:15,690 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:15,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:15,691 INFO L85 PathProgramCache]: Analyzing trace with hash -720125723, now seen corresponding path program 12 times [2024-01-27 15:48:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:15,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485166475] [2024-01-27 15:48:15,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:15,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:16,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:16,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485166475] [2024-01-27 15:48:16,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485166475] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:16,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:16,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:16,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679286812] [2024-01-27 15:48:16,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:16,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:16,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:16,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:16,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:16,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:16,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 145 transitions, 1222 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:16,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:16,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:16,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:16,968 INFO L124 PetriNetUnfolderBase]: 2936/5213 cut-off events. [2024-01-27 15:48:16,968 INFO L125 PetriNetUnfolderBase]: For 36071/36151 co-relation queries the response was YES. [2024-01-27 15:48:16,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20179 conditions, 5213 events. 2936/5213 cut-off events. For 36071/36151 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35405 event pairs, 1135 based on Foata normal form. 29/5094 useless extension candidates. Maximal degree in co-relation 20126. Up to 3919 conditions per place. [2024-01-27 15:48:17,005 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 158 selfloop transitions, 42 changer transitions 4/211 dead transitions. [2024-01-27 15:48:17,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 2064 flow [2024-01-27 15:48:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:17,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-01-27 15:48:17,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2024-01-27 15:48:17,007 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 1222 flow. Second operand 11 states and 229 transitions. [2024-01-27 15:48:17,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 2064 flow [2024-01-27 15:48:17,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1956 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:17,154 INFO L231 Difference]: Finished difference. Result has 153 places, 152 transitions, 1379 flow [2024-01-27 15:48:17,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1379, PETRI_PLACES=153, PETRI_TRANSITIONS=152} [2024-01-27 15:48:17,155 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2024-01-27 15:48:17,155 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 152 transitions, 1379 flow [2024-01-27 15:48:17,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:17,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:17,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:17,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-27 15:48:17,155 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:17,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:17,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1704024001, now seen corresponding path program 13 times [2024-01-27 15:48:17,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:17,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349207375] [2024-01-27 15:48:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:17,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:17,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:17,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349207375] [2024-01-27 15:48:17,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349207375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:17,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:17,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:17,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097184913] [2024-01-27 15:48:17,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:17,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:17,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:17,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:17,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:17,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:17,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 152 transitions, 1379 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:17,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:17,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:17,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:18,332 INFO L124 PetriNetUnfolderBase]: 2936/5217 cut-off events. [2024-01-27 15:48:18,332 INFO L125 PetriNetUnfolderBase]: For 42611/42677 co-relation queries the response was YES. [2024-01-27 15:48:18,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20908 conditions, 5217 events. 2936/5217 cut-off events. For 42611/42677 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35369 event pairs, 1197 based on Foata normal form. 19/5082 useless extension candidates. Maximal degree in co-relation 20851. Up to 4132 conditions per place. [2024-01-27 15:48:18,360 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 37 changer transitions 5/210 dead transitions. [2024-01-27 15:48:18,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 2100 flow [2024-01-27 15:48:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:18,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-01-27 15:48:18,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2024-01-27 15:48:18,362 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 1379 flow. Second operand 11 states and 223 transitions. [2024-01-27 15:48:18,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 2100 flow [2024-01-27 15:48:18,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 210 transitions, 1942 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:18,425 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 1348 flow [2024-01-27 15:48:18,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1348, PETRI_PLACES=159, PETRI_TRANSITIONS=156} [2024-01-27 15:48:18,425 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-01-27 15:48:18,425 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1348 flow [2024-01-27 15:48:18,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:18,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:18,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-27 15:48:18,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:18,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -935166021, now seen corresponding path program 14 times [2024-01-27 15:48:18,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:18,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591903552] [2024-01-27 15:48:18,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:18,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:18,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:18,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591903552] [2024-01-27 15:48:18,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591903552] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:18,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:18,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:18,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122936836] [2024-01-27 15:48:18,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:18,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:18,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:18,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:18,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:18,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:18,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 156 transitions, 1348 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:18,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:18,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:18,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:19,607 INFO L124 PetriNetUnfolderBase]: 2936/5209 cut-off events. [2024-01-27 15:48:19,608 INFO L125 PetriNetUnfolderBase]: For 37902/37988 co-relation queries the response was YES. [2024-01-27 15:48:19,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20278 conditions, 5209 events. 2936/5209 cut-off events. For 37902/37988 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35326 event pairs, 1201 based on Foata normal form. 35/5098 useless extension candidates. Maximal degree in co-relation 20218. Up to 4128 conditions per place. [2024-01-27 15:48:19,638 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 41 changer transitions 5/212 dead transitions. [2024-01-27 15:48:19,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 212 transitions, 2041 flow [2024-01-27 15:48:19,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-01-27 15:48:19,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2024-01-27 15:48:19,640 INFO L175 Difference]: Start difference. First operand has 159 places, 156 transitions, 1348 flow. Second operand 11 states and 222 transitions. [2024-01-27 15:48:19,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 212 transitions, 2041 flow [2024-01-27 15:48:19,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 212 transitions, 1935 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:19,693 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 1388 flow [2024-01-27 15:48:19,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1388, PETRI_PLACES=163, PETRI_TRANSITIONS=160} [2024-01-27 15:48:19,694 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2024-01-27 15:48:19,694 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 1388 flow [2024-01-27 15:48:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:19,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:19,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:19,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-27 15:48:19,694 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:19,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:19,695 INFO L85 PathProgramCache]: Analyzing trace with hash 116432433, now seen corresponding path program 15 times [2024-01-27 15:48:19,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:19,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440643285] [2024-01-27 15:48:19,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:19,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:20,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:20,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440643285] [2024-01-27 15:48:20,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440643285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:20,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:20,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:20,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207697487] [2024-01-27 15:48:20,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:20,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:20,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:20,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:20,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:20,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 160 transitions, 1388 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:20,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:20,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:20,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:20,963 INFO L124 PetriNetUnfolderBase]: 2988/5300 cut-off events. [2024-01-27 15:48:20,964 INFO L125 PetriNetUnfolderBase]: For 37986/38072 co-relation queries the response was YES. [2024-01-27 15:48:20,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20521 conditions, 5300 events. 2988/5300 cut-off events. For 37986/38072 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36100 event pairs, 1269 based on Foata normal form. 35/5179 useless extension candidates. Maximal degree in co-relation 20459. Up to 4280 conditions per place. [2024-01-27 15:48:21,003 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 37 changer transitions 4/213 dead transitions. [2024-01-27 15:48:21,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 213 transitions, 2064 flow [2024-01-27 15:48:21,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-01-27 15:48:21,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2024-01-27 15:48:21,005 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 1388 flow. Second operand 11 states and 218 transitions. [2024-01-27 15:48:21,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 213 transitions, 2064 flow [2024-01-27 15:48:21,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 213 transitions, 1940 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:21,069 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1390 flow [2024-01-27 15:48:21,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1390, PETRI_PLACES=167, PETRI_TRANSITIONS=163} [2024-01-27 15:48:21,070 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2024-01-27 15:48:21,070 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1390 flow [2024-01-27 15:48:21,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:21,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:21,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:21,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-27 15:48:21,071 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:21,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 503210621, now seen corresponding path program 16 times [2024-01-27 15:48:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:21,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674500921] [2024-01-27 15:48:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:21,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:21,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674500921] [2024-01-27 15:48:21,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674500921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:21,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:21,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:21,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331287630] [2024-01-27 15:48:21,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:21,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:21,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:21,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:21,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 163 transitions, 1390 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:21,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:21,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:21,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:22,339 INFO L124 PetriNetUnfolderBase]: 2988/5322 cut-off events. [2024-01-27 15:48:22,339 INFO L125 PetriNetUnfolderBase]: For 37254/37340 co-relation queries the response was YES. [2024-01-27 15:48:22,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20425 conditions, 5322 events. 2988/5322 cut-off events. For 37254/37340 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 36472 event pairs, 1281 based on Foata normal form. 27/5189 useless extension candidates. Maximal degree in co-relation 20361. Up to 4298 conditions per place. [2024-01-27 15:48:22,367 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 166 selfloop transitions, 35 changer transitions 4/212 dead transitions. [2024-01-27 15:48:22,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 212 transitions, 2034 flow [2024-01-27 15:48:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:22,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-01-27 15:48:22,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42292490118577075 [2024-01-27 15:48:22,368 INFO L175 Difference]: Start difference. First operand has 167 places, 163 transitions, 1390 flow. Second operand 11 states and 214 transitions. [2024-01-27 15:48:22,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 212 transitions, 2034 flow [2024-01-27 15:48:22,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 212 transitions, 1926 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:22,423 INFO L231 Difference]: Finished difference. Result has 171 places, 165 transitions, 1378 flow [2024-01-27 15:48:22,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1284, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=171, PETRI_TRANSITIONS=165} [2024-01-27 15:48:22,423 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-01-27 15:48:22,423 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 165 transitions, 1378 flow [2024-01-27 15:48:22,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:22,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:22,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:22,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:48:22,424 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:22,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:22,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1843669629, now seen corresponding path program 17 times [2024-01-27 15:48:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:22,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326050571] [2024-01-27 15:48:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:22,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:22,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326050571] [2024-01-27 15:48:22,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326050571] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:22,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:22,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:22,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341330290] [2024-01-27 15:48:22,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:22,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:22,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 165 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:22,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:22,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:22,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:23,894 INFO L124 PetriNetUnfolderBase]: 3296/5892 cut-off events. [2024-01-27 15:48:23,895 INFO L125 PetriNetUnfolderBase]: For 49241/49303 co-relation queries the response was YES. [2024-01-27 15:48:23,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23590 conditions, 5892 events. 3296/5892 cut-off events. For 49241/49303 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41557 event pairs, 1307 based on Foata normal form. 13/5731 useless extension candidates. Maximal degree in co-relation 23524. Up to 4356 conditions per place. [2024-01-27 15:48:23,941 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 198 selfloop transitions, 44 changer transitions 4/253 dead transitions. [2024-01-27 15:48:23,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 253 transitions, 2487 flow [2024-01-27 15:48:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:23,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 257 transitions. [2024-01-27 15:48:23,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46557971014492755 [2024-01-27 15:48:23,944 INFO L175 Difference]: Start difference. First operand has 171 places, 165 transitions, 1378 flow. Second operand 12 states and 257 transitions. [2024-01-27 15:48:23,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 253 transitions, 2487 flow [2024-01-27 15:48:24,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 253 transitions, 2419 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:24,008 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 1647 flow [2024-01-27 15:48:24,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1310, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1647, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2024-01-27 15:48:24,009 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2024-01-27 15:48:24,009 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 1647 flow [2024-01-27 15:48:24,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:24,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:24,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:24,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:48:24,010 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:24,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:24,010 INFO L85 PathProgramCache]: Analyzing trace with hash -903332853, now seen corresponding path program 18 times [2024-01-27 15:48:24,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:24,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28456979] [2024-01-27 15:48:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28456979] [2024-01-27 15:48:24,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28456979] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:24,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:24,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:24,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682915240] [2024-01-27 15:48:24,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:24,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:24,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:24,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:24,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:24,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 1647 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:24,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:24,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:24,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:25,466 INFO L124 PetriNetUnfolderBase]: 3538/6338 cut-off events. [2024-01-27 15:48:25,466 INFO L125 PetriNetUnfolderBase]: For 67991/68125 co-relation queries the response was YES. [2024-01-27 15:48:25,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27001 conditions, 6338 events. 3538/6338 cut-off events. For 67991/68125 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 45433 event pairs, 1353 based on Foata normal form. 43/6200 useless extension candidates. Maximal degree in co-relation 26931. Up to 4613 conditions per place. [2024-01-27 15:48:25,516 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 192 selfloop transitions, 54 changer transitions 4/257 dead transitions. [2024-01-27 15:48:25,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 257 transitions, 2812 flow [2024-01-27 15:48:25,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 252 transitions. [2024-01-27 15:48:25,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-01-27 15:48:25,518 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 1647 flow. Second operand 12 states and 252 transitions. [2024-01-27 15:48:25,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 257 transitions, 2812 flow [2024-01-27 15:48:25,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 257 transitions, 2586 flow, removed 96 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:25,601 INFO L231 Difference]: Finished difference. Result has 188 places, 188 transitions, 1822 flow [2024-01-27 15:48:25,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1822, PETRI_PLACES=188, PETRI_TRANSITIONS=188} [2024-01-27 15:48:25,602 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 143 predicate places. [2024-01-27 15:48:25,602 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 188 transitions, 1822 flow [2024-01-27 15:48:25,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:25,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:25,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:25,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-27 15:48:25,603 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:25,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash -928981443, now seen corresponding path program 19 times [2024-01-27 15:48:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571275028] [2024-01-27 15:48:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:25,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:26,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:26,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571275028] [2024-01-27 15:48:26,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571275028] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:26,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603337278] [2024-01-27 15:48:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:26,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:26,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:26,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:26,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 188 transitions, 1822 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:26,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:26,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:27,162 INFO L124 PetriNetUnfolderBase]: 3676/6592 cut-off events. [2024-01-27 15:48:27,163 INFO L125 PetriNetUnfolderBase]: For 82590/82704 co-relation queries the response was YES. [2024-01-27 15:48:27,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28850 conditions, 6592 events. 3676/6592 cut-off events. For 82590/82704 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 47930 event pairs, 1479 based on Foata normal form. 19/6424 useless extension candidates. Maximal degree in co-relation 28775. Up to 4945 conditions per place. [2024-01-27 15:48:27,216 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 203 selfloop transitions, 49 changer transitions 4/263 dead transitions. [2024-01-27 15:48:27,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 263 transitions, 2884 flow [2024-01-27 15:48:27,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:27,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 251 transitions. [2024-01-27 15:48:27,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45471014492753625 [2024-01-27 15:48:27,218 INFO L175 Difference]: Start difference. First operand has 188 places, 188 transitions, 1822 flow. Second operand 12 states and 251 transitions. [2024-01-27 15:48:27,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 263 transitions, 2884 flow [2024-01-27 15:48:27,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 263 transitions, 2677 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-01-27 15:48:27,327 INFO L231 Difference]: Finished difference. Result has 195 places, 194 transitions, 1879 flow [2024-01-27 15:48:27,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1619, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1879, PETRI_PLACES=195, PETRI_TRANSITIONS=194} [2024-01-27 15:48:27,327 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 150 predicate places. [2024-01-27 15:48:27,327 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 194 transitions, 1879 flow [2024-01-27 15:48:27,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:27,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:27,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:27,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-27 15:48:27,328 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:27,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:27,329 INFO L85 PathProgramCache]: Analyzing trace with hash -245836767, now seen corresponding path program 20 times [2024-01-27 15:48:27,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:27,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756549840] [2024-01-27 15:48:27,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:27,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756549840] [2024-01-27 15:48:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756549840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885729635] [2024-01-27 15:48:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:27,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:27,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:27,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 194 transitions, 1879 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:27,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:27,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:27,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:28,742 INFO L124 PetriNetUnfolderBase]: 3676/6606 cut-off events. [2024-01-27 15:48:28,742 INFO L125 PetriNetUnfolderBase]: For 80652/80738 co-relation queries the response was YES. [2024-01-27 15:48:28,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28665 conditions, 6606 events. 3676/6606 cut-off events. For 80652/80738 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 47998 event pairs, 1547 based on Foata normal form. 35/6452 useless extension candidates. Maximal degree in co-relation 28587. Up to 5100 conditions per place. [2024-01-27 15:48:28,794 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 196 selfloop transitions, 51 changer transitions 5/259 dead transitions. [2024-01-27 15:48:28,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 259 transitions, 2807 flow [2024-01-27 15:48:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:48:28,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:48:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2024-01-27 15:48:28,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2024-01-27 15:48:28,796 INFO L175 Difference]: Start difference. First operand has 195 places, 194 transitions, 1879 flow. Second operand 12 states and 244 transitions. [2024-01-27 15:48:28,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 259 transitions, 2807 flow [2024-01-27 15:48:28,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 259 transitions, 2654 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:28,943 INFO L231 Difference]: Finished difference. Result has 200 places, 198 transitions, 1906 flow [2024-01-27 15:48:28,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1906, PETRI_PLACES=200, PETRI_TRANSITIONS=198} [2024-01-27 15:48:28,944 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 155 predicate places. [2024-01-27 15:48:28,944 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 198 transitions, 1906 flow [2024-01-27 15:48:28,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:28,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:28,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-27 15:48:28,945 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:28,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:28,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1045278081, now seen corresponding path program 21 times [2024-01-27 15:48:28,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:28,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053736994] [2024-01-27 15:48:28,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:29,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:29,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:29,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053736994] [2024-01-27 15:48:29,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053736994] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:29,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:29,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:29,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615749723] [2024-01-27 15:48:29,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:29,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:29,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 198 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:29,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:29,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:29,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:30,452 INFO L124 PetriNetUnfolderBase]: 3850/6917 cut-off events. [2024-01-27 15:48:30,453 INFO L125 PetriNetUnfolderBase]: For 88517/88707 co-relation queries the response was YES. [2024-01-27 15:48:30,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30434 conditions, 6917 events. 3850/6917 cut-off events. For 88517/88707 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 50885 event pairs, 1807 based on Foata normal form. 43/6751 useless extension candidates. Maximal degree in co-relation 30354. Up to 5562 conditions per place. [2024-01-27 15:48:30,511 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 219 selfloop transitions, 36 changer transitions 4/266 dead transitions. [2024-01-27 15:48:30,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 266 transitions, 3121 flow [2024-01-27 15:48:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:30,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2024-01-27 15:48:30,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-01-27 15:48:30,513 INFO L175 Difference]: Start difference. First operand has 200 places, 198 transitions, 1906 flow. Second operand 11 states and 230 transitions. [2024-01-27 15:48:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 266 transitions, 3121 flow [2024-01-27 15:48:30,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 266 transitions, 2967 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-01-27 15:48:30,638 INFO L231 Difference]: Finished difference. Result has 205 places, 207 transitions, 2129 flow [2024-01-27 15:48:30,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1758, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2129, PETRI_PLACES=205, PETRI_TRANSITIONS=207} [2024-01-27 15:48:30,639 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2024-01-27 15:48:30,639 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 207 transitions, 2129 flow [2024-01-27 15:48:30,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:30,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:30,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:30,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-27 15:48:30,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:30,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:30,640 INFO L85 PathProgramCache]: Analyzing trace with hash 775722761, now seen corresponding path program 22 times [2024-01-27 15:48:30,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:30,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601597604] [2024-01-27 15:48:30,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:31,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:31,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:31,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601597604] [2024-01-27 15:48:31,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601597604] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:31,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:31,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:31,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869335749] [2024-01-27 15:48:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:31,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:31,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:31,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:31,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 207 transitions, 2129 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:31,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:31,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:31,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:32,274 INFO L124 PetriNetUnfolderBase]: 4096/7337 cut-off events. [2024-01-27 15:48:32,274 INFO L125 PetriNetUnfolderBase]: For 126930/127244 co-relation queries the response was YES. [2024-01-27 15:48:32,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34300 conditions, 7337 events. 4096/7337 cut-off events. For 126930/127244 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 54431 event pairs, 1889 based on Foata normal form. 43/7155 useless extension candidates. Maximal degree in co-relation 34216. Up to 5881 conditions per place. [2024-01-27 15:48:32,338 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 231 selfloop transitions, 37 changer transitions 4/279 dead transitions. [2024-01-27 15:48:32,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 279 transitions, 3404 flow [2024-01-27 15:48:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2024-01-27 15:48:32,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624505928853755 [2024-01-27 15:48:32,340 INFO L175 Difference]: Start difference. First operand has 205 places, 207 transitions, 2129 flow. Second operand 11 states and 234 transitions. [2024-01-27 15:48:32,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 279 transitions, 3404 flow [2024-01-27 15:48:32,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 279 transitions, 3114 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:32,521 INFO L231 Difference]: Finished difference. Result has 214 places, 217 transitions, 2228 flow [2024-01-27 15:48:32,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2228, PETRI_PLACES=214, PETRI_TRANSITIONS=217} [2024-01-27 15:48:32,522 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 169 predicate places. [2024-01-27 15:48:32,522 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 217 transitions, 2228 flow [2024-01-27 15:48:32,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:32,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:32,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:32,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-27 15:48:32,523 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:32,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:32,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2017761769, now seen corresponding path program 23 times [2024-01-27 15:48:32,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:32,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191258915] [2024-01-27 15:48:32,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:32,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:32,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191258915] [2024-01-27 15:48:32,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191258915] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:32,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:32,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:32,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018923023] [2024-01-27 15:48:32,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:32,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:32,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:32,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:32,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:32,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 217 transitions, 2228 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:32,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:32,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:32,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:34,012 INFO L124 PetriNetUnfolderBase]: 4170/7470 cut-off events. [2024-01-27 15:48:34,012 INFO L125 PetriNetUnfolderBase]: For 122857/123281 co-relation queries the response was YES. [2024-01-27 15:48:34,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34133 conditions, 7470 events. 4170/7470 cut-off events. For 122857/123281 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 55678 event pairs, 2017 based on Foata normal form. 57/7298 useless extension candidates. Maximal degree in co-relation 34044. Up to 6177 conditions per place. [2024-01-27 15:48:34,064 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 223 selfloop transitions, 36 changer transitions 5/271 dead transitions. [2024-01-27 15:48:34,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 271 transitions, 3192 flow [2024-01-27 15:48:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:34,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-01-27 15:48:34,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43280632411067194 [2024-01-27 15:48:34,065 INFO L175 Difference]: Start difference. First operand has 214 places, 217 transitions, 2228 flow. Second operand 11 states and 219 transitions. [2024-01-27 15:48:34,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 271 transitions, 3192 flow [2024-01-27 15:48:34,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 271 transitions, 2982 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:34,249 INFO L231 Difference]: Finished difference. Result has 222 places, 223 transitions, 2229 flow [2024-01-27 15:48:34,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2229, PETRI_PLACES=222, PETRI_TRANSITIONS=223} [2024-01-27 15:48:34,250 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 177 predicate places. [2024-01-27 15:48:34,250 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 223 transitions, 2229 flow [2024-01-27 15:48:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:34,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:34,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:34,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-27 15:48:34,250 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:34,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:34,251 INFO L85 PathProgramCache]: Analyzing trace with hash 19691695, now seen corresponding path program 24 times [2024-01-27 15:48:34,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:34,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795803399] [2024-01-27 15:48:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:34,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:34,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:34,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795803399] [2024-01-27 15:48:34,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795803399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:34,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:34,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694482774] [2024-01-27 15:48:34,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:34,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:34,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:34,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 223 transitions, 2229 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:34,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:34,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:34,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:35,797 INFO L124 PetriNetUnfolderBase]: 4354/7778 cut-off events. [2024-01-27 15:48:35,797 INFO L125 PetriNetUnfolderBase]: For 124172/124396 co-relation queries the response was YES. [2024-01-27 15:48:35,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35224 conditions, 7778 events. 4354/7778 cut-off events. For 124172/124396 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 58306 event pairs, 2041 based on Foata normal form. 63/7608 useless extension candidates. Maximal degree in co-relation 35131. Up to 6207 conditions per place. [2024-01-27 15:48:35,874 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 236 selfloop transitions, 42 changer transitions 4/289 dead transitions. [2024-01-27 15:48:35,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 289 transitions, 3457 flow [2024-01-27 15:48:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:35,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-01-27 15:48:35,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-01-27 15:48:35,876 INFO L175 Difference]: Start difference. First operand has 222 places, 223 transitions, 2229 flow. Second operand 11 states and 232 transitions. [2024-01-27 15:48:35,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 289 transitions, 3457 flow [2024-01-27 15:48:36,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 289 transitions, 3295 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:36,271 INFO L231 Difference]: Finished difference. Result has 229 places, 230 transitions, 2422 flow [2024-01-27 15:48:36,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2422, PETRI_PLACES=229, PETRI_TRANSITIONS=230} [2024-01-27 15:48:36,272 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2024-01-27 15:48:36,272 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 230 transitions, 2422 flow [2024-01-27 15:48:36,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:36,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:36,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:36,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-27 15:48:36,273 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:36,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:36,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1969846693, now seen corresponding path program 25 times [2024-01-27 15:48:36,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:36,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580613025] [2024-01-27 15:48:36,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:36,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:36,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:36,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580613025] [2024-01-27 15:48:36,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580613025] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:36,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:36,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:36,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469071050] [2024-01-27 15:48:36,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:36,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:36,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:36,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:36,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:36,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:36,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 230 transitions, 2422 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:36,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:36,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:36,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:37,980 INFO L124 PetriNetUnfolderBase]: 4506/8089 cut-off events. [2024-01-27 15:48:37,980 INFO L125 PetriNetUnfolderBase]: For 161327/161568 co-relation queries the response was YES. [2024-01-27 15:48:38,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38423 conditions, 8089 events. 4506/8089 cut-off events. For 161327/161568 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 61605 event pairs, 2151 based on Foata normal form. 53/7890 useless extension candidates. Maximal degree in co-relation 38326. Up to 6597 conditions per place. [2024-01-27 15:48:38,083 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 254 selfloop transitions, 35 changer transitions 4/300 dead transitions. [2024-01-27 15:48:38,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 300 transitions, 3654 flow [2024-01-27 15:48:38,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 234 transitions. [2024-01-27 15:48:38,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624505928853755 [2024-01-27 15:48:38,085 INFO L175 Difference]: Start difference. First operand has 229 places, 230 transitions, 2422 flow. Second operand 11 states and 234 transitions. [2024-01-27 15:48:38,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 300 transitions, 3654 flow [2024-01-27 15:48:38,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 300 transitions, 3410 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:38,590 INFO L231 Difference]: Finished difference. Result has 236 places, 236 transitions, 2439 flow [2024-01-27 15:48:38,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2439, PETRI_PLACES=236, PETRI_TRANSITIONS=236} [2024-01-27 15:48:38,591 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 191 predicate places. [2024-01-27 15:48:38,592 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 236 transitions, 2439 flow [2024-01-27 15:48:38,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:38,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:38,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:38,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-27 15:48:38,592 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:38,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:38,593 INFO L85 PathProgramCache]: Analyzing trace with hash -286708895, now seen corresponding path program 26 times [2024-01-27 15:48:38,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:38,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200043109] [2024-01-27 15:48:38,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:38,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:38,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200043109] [2024-01-27 15:48:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200043109] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:39,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:39,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:39,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689950284] [2024-01-27 15:48:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:39,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:39,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:39,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:39,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 236 transitions, 2439 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:39,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:39,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:39,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:40,321 INFO L124 PetriNetUnfolderBase]: 4594/8220 cut-off events. [2024-01-27 15:48:40,322 INFO L125 PetriNetUnfolderBase]: For 164134/164372 co-relation queries the response was YES. [2024-01-27 15:48:40,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38586 conditions, 8220 events. 4594/8220 cut-off events. For 164134/164372 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 62578 event pairs, 2201 based on Foata normal form. 61/8031 useless extension candidates. Maximal degree in co-relation 38485. Up to 6720 conditions per place. [2024-01-27 15:48:40,627 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 252 selfloop transitions, 37 changer transitions 5/301 dead transitions. [2024-01-27 15:48:40,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 301 transitions, 3613 flow [2024-01-27 15:48:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:40,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-01-27 15:48:40,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-01-27 15:48:40,630 INFO L175 Difference]: Start difference. First operand has 236 places, 236 transitions, 2439 flow. Second operand 11 states and 232 transitions. [2024-01-27 15:48:40,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 301 transitions, 3613 flow [2024-01-27 15:48:40,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 301 transitions, 3430 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:40,918 INFO L231 Difference]: Finished difference. Result has 242 places, 240 transitions, 2506 flow [2024-01-27 15:48:40,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2506, PETRI_PLACES=242, PETRI_TRANSITIONS=240} [2024-01-27 15:48:40,918 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-01-27 15:48:40,918 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 240 transitions, 2506 flow [2024-01-27 15:48:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:40,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:40,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-27 15:48:40,919 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:40,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1574100251, now seen corresponding path program 27 times [2024-01-27 15:48:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:40,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401858481] [2024-01-27 15:48:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:40,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:40,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:41,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:41,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401858481] [2024-01-27 15:48:41,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401858481] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:41,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:41,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:41,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971421091] [2024-01-27 15:48:41,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:41,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:41,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:41,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:41,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:41,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 240 transitions, 2506 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:41,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:41,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:41,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:42,944 INFO L124 PetriNetUnfolderBase]: 4732/8495 cut-off events. [2024-01-27 15:48:42,944 INFO L125 PetriNetUnfolderBase]: For 180314/180538 co-relation queries the response was YES. [2024-01-27 15:48:42,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40486 conditions, 8495 events. 4732/8495 cut-off events. For 180314/180538 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 65463 event pairs, 2295 based on Foata normal form. 51/8286 useless extension candidates. Maximal degree in co-relation 40382. Up to 6970 conditions per place. [2024-01-27 15:48:43,014 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 261 selfloop transitions, 36 changer transitions 4/308 dead transitions. [2024-01-27 15:48:43,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 308 transitions, 3789 flow [2024-01-27 15:48:43,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:43,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-01-27 15:48:43,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2024-01-27 15:48:43,016 INFO L175 Difference]: Start difference. First operand has 242 places, 240 transitions, 2506 flow. Second operand 11 states and 233 transitions. [2024-01-27 15:48:43,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 308 transitions, 3789 flow [2024-01-27 15:48:43,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 308 transitions, 3594 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-01-27 15:48:43,191 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 2590 flow [2024-01-27 15:48:43,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2590, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2024-01-27 15:48:43,192 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2024-01-27 15:48:43,192 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 2590 flow [2024-01-27 15:48:43,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:43,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:43,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:43,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-27 15:48:43,192 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:43,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:43,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1321888425, now seen corresponding path program 28 times [2024-01-27 15:48:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:43,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711598997] [2024-01-27 15:48:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:43,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:43,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711598997] [2024-01-27 15:48:43,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711598997] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:43,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:43,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:43,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772037243] [2024-01-27 15:48:43,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:43,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:43,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:43,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:43,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:43,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:43,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 2590 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:43,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:43,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:43,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:44,987 INFO L124 PetriNetUnfolderBase]: 4732/8500 cut-off events. [2024-01-27 15:48:44,987 INFO L125 PetriNetUnfolderBase]: For 178561/178783 co-relation queries the response was YES. [2024-01-27 15:48:45,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40135 conditions, 8500 events. 4732/8500 cut-off events. For 178561/178783 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 65494 event pairs, 2349 based on Foata normal form. 57/8295 useless extension candidates. Maximal degree in co-relation 40027. Up to 7047 conditions per place. [2024-01-27 15:48:45,087 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 255 selfloop transitions, 37 changer transitions 5/304 dead transitions. [2024-01-27 15:48:45,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 304 transitions, 3677 flow [2024-01-27 15:48:45,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:45,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2024-01-27 15:48:45,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44664031620553357 [2024-01-27 15:48:45,089 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 2590 flow. Second operand 11 states and 226 transitions. [2024-01-27 15:48:45,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 304 transitions, 3677 flow [2024-01-27 15:48:45,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 304 transitions, 3477 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-01-27 15:48:45,303 INFO L231 Difference]: Finished difference. Result has 254 places, 250 transitions, 2539 flow [2024-01-27 15:48:45,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2539, PETRI_PLACES=254, PETRI_TRANSITIONS=250} [2024-01-27 15:48:45,304 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 209 predicate places. [2024-01-27 15:48:45,304 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 250 transitions, 2539 flow [2024-01-27 15:48:45,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:45,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:45,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:45,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-27 15:48:45,305 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:45,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:45,305 INFO L85 PathProgramCache]: Analyzing trace with hash -375356519, now seen corresponding path program 29 times [2024-01-27 15:48:45,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:45,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859514235] [2024-01-27 15:48:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:45,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:45,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859514235] [2024-01-27 15:48:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859514235] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:45,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064633988] [2024-01-27 15:48:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:45,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:45,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:45,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:45,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:45,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:45,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 250 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:45,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:45,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:45,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:47,007 INFO L124 PetriNetUnfolderBase]: 4732/8498 cut-off events. [2024-01-27 15:48:47,007 INFO L125 PetriNetUnfolderBase]: For 170841/171087 co-relation queries the response was YES. [2024-01-27 15:48:47,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39342 conditions, 8498 events. 4732/8498 cut-off events. For 170841/171087 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 65598 event pairs, 2349 based on Foata normal form. 73/8311 useless extension candidates. Maximal degree in co-relation 39231. Up to 7043 conditions per place. [2024-01-27 15:48:47,081 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 253 selfloop transitions, 41 changer transitions 5/306 dead transitions. [2024-01-27 15:48:47,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 306 transitions, 3574 flow [2024-01-27 15:48:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:47,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-01-27 15:48:47,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2024-01-27 15:48:47,083 INFO L175 Difference]: Start difference. First operand has 254 places, 250 transitions, 2539 flow. Second operand 11 states and 225 transitions. [2024-01-27 15:48:47,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 306 transitions, 3574 flow [2024-01-27 15:48:47,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 306 transitions, 3438 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:47,329 INFO L231 Difference]: Finished difference. Result has 258 places, 254 transitions, 2571 flow [2024-01-27 15:48:47,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2571, PETRI_PLACES=258, PETRI_TRANSITIONS=254} [2024-01-27 15:48:47,330 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 213 predicate places. [2024-01-27 15:48:47,330 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 254 transitions, 2571 flow [2024-01-27 15:48:47,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:47,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:47,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-27 15:48:47,330 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:47,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash -334223153, now seen corresponding path program 30 times [2024-01-27 15:48:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414014900] [2024-01-27 15:48:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414014900] [2024-01-27 15:48:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414014900] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:47,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958575110] [2024-01-27 15:48:47,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:47,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:47,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:47,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:47,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:47,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:47,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 254 transitions, 2571 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:47,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:47,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:49,029 INFO L124 PetriNetUnfolderBase]: 4784/8590 cut-off events. [2024-01-27 15:48:49,029 INFO L125 PetriNetUnfolderBase]: For 169881/170129 co-relation queries the response was YES. [2024-01-27 15:48:49,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39466 conditions, 8590 events. 4784/8590 cut-off events. For 169881/170129 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 66457 event pairs, 2377 based on Foata normal form. 73/8394 useless extension candidates. Maximal degree in co-relation 39353. Up to 7195 conditions per place. [2024-01-27 15:48:49,117 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 259 selfloop transitions, 37 changer transitions 4/307 dead transitions. [2024-01-27 15:48:49,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 307 transitions, 3589 flow [2024-01-27 15:48:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-01-27 15:48:49,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367588932806324 [2024-01-27 15:48:49,119 INFO L175 Difference]: Start difference. First operand has 258 places, 254 transitions, 2571 flow. Second operand 11 states and 221 transitions. [2024-01-27 15:48:49,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 307 transitions, 3589 flow [2024-01-27 15:48:49,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 307 transitions, 3435 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:49,445 INFO L231 Difference]: Finished difference. Result has 262 places, 257 transitions, 2565 flow [2024-01-27 15:48:49,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2565, PETRI_PLACES=262, PETRI_TRANSITIONS=257} [2024-01-27 15:48:49,446 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-01-27 15:48:49,446 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 257 transitions, 2565 flow [2024-01-27 15:48:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:49,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:49,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-27 15:48:49,447 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:49,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:49,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1517638381, now seen corresponding path program 31 times [2024-01-27 15:48:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205154658] [2024-01-27 15:48:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:49,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:49,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:49,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205154658] [2024-01-27 15:48:49,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205154658] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:49,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:49,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:49,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274120463] [2024-01-27 15:48:49,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:49,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:49,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:49,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:49,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:49,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:49,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 257 transitions, 2565 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:49,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:49,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:49,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:51,098 INFO L124 PetriNetUnfolderBase]: 4784/8612 cut-off events. [2024-01-27 15:48:51,098 INFO L125 PetriNetUnfolderBase]: For 167623/167871 co-relation queries the response was YES. [2024-01-27 15:48:51,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39237 conditions, 8612 events. 4784/8612 cut-off events. For 167623/167871 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 66891 event pairs, 2389 based on Foata normal form. 65/8404 useless extension candidates. Maximal degree in co-relation 39122. Up to 7213 conditions per place. [2024-01-27 15:48:51,179 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 260 selfloop transitions, 35 changer transitions 4/306 dead transitions. [2024-01-27 15:48:51,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 306 transitions, 3529 flow [2024-01-27 15:48:51,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:51,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:51,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-01-27 15:48:51,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4288537549407115 [2024-01-27 15:48:51,181 INFO L175 Difference]: Start difference. First operand has 262 places, 257 transitions, 2565 flow. Second operand 11 states and 217 transitions. [2024-01-27 15:48:51,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 306 transitions, 3529 flow [2024-01-27 15:48:51,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 306 transitions, 3389 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:51,534 INFO L231 Difference]: Finished difference. Result has 266 places, 259 transitions, 2521 flow [2024-01-27 15:48:51,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2521, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2024-01-27 15:48:51,535 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 221 predicate places. [2024-01-27 15:48:51,535 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 2521 flow [2024-01-27 15:48:51,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:51,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:51,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:51,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-27 15:48:51,536 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:51,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:51,536 INFO L85 PathProgramCache]: Analyzing trace with hash 87965661, now seen corresponding path program 32 times [2024-01-27 15:48:51,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:51,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916103005] [2024-01-27 15:48:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:51,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:51,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:51,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916103005] [2024-01-27 15:48:51,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916103005] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:51,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:51,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142260738] [2024-01-27 15:48:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:52,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:52,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 2521 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:52,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:52,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:52,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:53,428 INFO L124 PetriNetUnfolderBase]: 4962/8931 cut-off events. [2024-01-27 15:48:53,429 INFO L125 PetriNetUnfolderBase]: For 188418/188694 co-relation queries the response was YES. [2024-01-27 15:48:53,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41723 conditions, 8931 events. 4962/8931 cut-off events. For 188418/188694 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 69831 event pairs, 2455 based on Foata normal form. 57/8708 useless extension candidates. Maximal degree in co-relation 41606. Up to 7363 conditions per place. [2024-01-27 15:48:53,542 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 278 selfloop transitions, 35 changer transitions 4/324 dead transitions. [2024-01-27 15:48:53,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 324 transitions, 4014 flow [2024-01-27 15:48:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:53,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2024-01-27 15:48:53,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2024-01-27 15:48:53,543 INFO L175 Difference]: Start difference. First operand has 266 places, 259 transitions, 2521 flow. Second operand 11 states and 229 transitions. [2024-01-27 15:48:53,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 324 transitions, 4014 flow [2024-01-27 15:48:53,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 324 transitions, 3946 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-27 15:48:53,856 INFO L231 Difference]: Finished difference. Result has 272 places, 268 transitions, 2932 flow [2024-01-27 15:48:53,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2932, PETRI_PLACES=272, PETRI_TRANSITIONS=268} [2024-01-27 15:48:53,857 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 227 predicate places. [2024-01-27 15:48:53,857 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 268 transitions, 2932 flow [2024-01-27 15:48:53,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:53,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:53,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-27 15:48:53,858 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:53,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash -88978623, now seen corresponding path program 33 times [2024-01-27 15:48:53,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:53,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423999706] [2024-01-27 15:48:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:53,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423999706] [2024-01-27 15:48:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423999706] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:54,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001925330] [2024-01-27 15:48:54,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:54,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:54,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:54,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:54,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:54,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 268 transitions, 2932 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:54,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:54,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:54,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:55,792 INFO L124 PetriNetUnfolderBase]: 5168/9283 cut-off events. [2024-01-27 15:48:55,792 INFO L125 PetriNetUnfolderBase]: For 260850/261344 co-relation queries the response was YES. [2024-01-27 15:48:55,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46428 conditions, 9283 events. 5168/9283 cut-off events. For 260850/261344 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 73142 event pairs, 2529 based on Foata normal form. 57/9047 useless extension candidates. Maximal degree in co-relation 46307. Up to 7626 conditions per place. [2024-01-27 15:48:55,897 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 289 selfloop transitions, 36 changer transitions 4/336 dead transitions. [2024-01-27 15:48:55,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 336 transitions, 4453 flow [2024-01-27 15:48:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:55,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:55,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-01-27 15:48:55,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2024-01-27 15:48:55,899 INFO L175 Difference]: Start difference. First operand has 272 places, 268 transitions, 2932 flow. Second operand 11 states and 233 transitions. [2024-01-27 15:48:55,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 336 transitions, 4453 flow [2024-01-27 15:48:56,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 336 transitions, 4123 flow, removed 149 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:56,275 INFO L231 Difference]: Finished difference. Result has 281 places, 277 transitions, 3043 flow [2024-01-27 15:48:56,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3043, PETRI_PLACES=281, PETRI_TRANSITIONS=277} [2024-01-27 15:48:56,275 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2024-01-27 15:48:56,275 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 277 transitions, 3043 flow [2024-01-27 15:48:56,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:56,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:56,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-27 15:48:56,276 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:56,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash 419881091, now seen corresponding path program 34 times [2024-01-27 15:48:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:56,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514587113] [2024-01-27 15:48:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:56,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514587113] [2024-01-27 15:48:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514587113] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:56,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:56,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:56,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031189632] [2024-01-27 15:48:56,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:56,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:56,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:56,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 277 transitions, 3043 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:56,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:56,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:56,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:48:58,044 INFO L124 PetriNetUnfolderBase]: 5242/9369 cut-off events. [2024-01-27 15:48:58,044 INFO L125 PetriNetUnfolderBase]: For 273038/273574 co-relation queries the response was YES. [2024-01-27 15:48:58,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46582 conditions, 9369 events. 5242/9369 cut-off events. For 273038/273574 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 73434 event pairs, 2729 based on Foata normal form. 71/9157 useless extension candidates. Maximal degree in co-relation 46456. Up to 7922 conditions per place. [2024-01-27 15:48:58,144 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 281 selfloop transitions, 35 changer transitions 5/328 dead transitions. [2024-01-27 15:48:58,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 328 transitions, 4177 flow [2024-01-27 15:48:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:48:58,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:48:58,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-01-27 15:48:58,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2024-01-27 15:48:58,146 INFO L175 Difference]: Start difference. First operand has 281 places, 277 transitions, 3043 flow. Second operand 11 states and 218 transitions. [2024-01-27 15:48:58,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 328 transitions, 4177 flow [2024-01-27 15:48:58,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 328 transitions, 3879 flow, removed 133 selfloop flow, removed 5 redundant places. [2024-01-27 15:48:58,856 INFO L231 Difference]: Finished difference. Result has 289 places, 283 transitions, 3000 flow [2024-01-27 15:48:58,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2745, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3000, PETRI_PLACES=289, PETRI_TRANSITIONS=283} [2024-01-27 15:48:58,856 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 244 predicate places. [2024-01-27 15:48:58,856 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 283 transitions, 3000 flow [2024-01-27 15:48:58,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:58,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:48:58,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:48:58,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-27 15:48:58,857 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:48:58,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:48:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1005216463, now seen corresponding path program 35 times [2024-01-27 15:48:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:48:58,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452904177] [2024-01-27 15:48:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:48:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:48:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:48:59,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:48:59,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:48:59,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452904177] [2024-01-27 15:48:59,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452904177] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:48:59,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:48:59,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:48:59,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953258902] [2024-01-27 15:48:59,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:48:59,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:48:59,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:48:59,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:48:59,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:48:59,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:48:59,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 283 transitions, 3000 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:48:59,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:48:59,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:48:59,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:00,866 INFO L124 PetriNetUnfolderBase]: 5432/9724 cut-off events. [2024-01-27 15:49:00,866 INFO L125 PetriNetUnfolderBase]: For 271873/272169 co-relation queries the response was YES. [2024-01-27 15:49:00,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47631 conditions, 9724 events. 5432/9724 cut-off events. For 271873/272169 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 77099 event pairs, 2705 based on Foata normal form. 77/9502 useless extension candidates. Maximal degree in co-relation 47501. Up to 7952 conditions per place. [2024-01-27 15:49:00,991 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 294 selfloop transitions, 41 changer transitions 4/346 dead transitions. [2024-01-27 15:49:00,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 346 transitions, 4490 flow [2024-01-27 15:49:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:00,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-01-27 15:49:00,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-01-27 15:49:00,993 INFO L175 Difference]: Start difference. First operand has 289 places, 283 transitions, 3000 flow. Second operand 11 states and 231 transitions. [2024-01-27 15:49:00,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 346 transitions, 4490 flow [2024-01-27 15:49:01,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 346 transitions, 4272 flow, removed 90 selfloop flow, removed 6 redundant places. [2024-01-27 15:49:01,473 INFO L231 Difference]: Finished difference. Result has 296 places, 290 transitions, 3231 flow [2024-01-27 15:49:01,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2782, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=296, PETRI_TRANSITIONS=290} [2024-01-27 15:49:01,474 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 251 predicate places. [2024-01-27 15:49:01,474 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 290 transitions, 3231 flow [2024-01-27 15:49:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:01,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:01,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:01,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-27 15:49:01,475 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:01,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash 890770307, now seen corresponding path program 36 times [2024-01-27 15:49:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957951118] [2024-01-27 15:49:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:01,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:01,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957951118] [2024-01-27 15:49:01,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957951118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:01,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:01,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573268367] [2024-01-27 15:49:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:01,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:01,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:01,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 290 transitions, 3231 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:01,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:01,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:01,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:03,721 INFO L124 PetriNetUnfolderBase]: 5522/9854 cut-off events. [2024-01-27 15:49:03,722 INFO L125 PetriNetUnfolderBase]: For 316849/317145 co-relation queries the response was YES. [2024-01-27 15:49:03,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49997 conditions, 9854 events. 5522/9854 cut-off events. For 316849/317145 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 78123 event pairs, 2863 based on Foata normal form. 65/9633 useless extension candidates. Maximal degree in co-relation 49863. Up to 8232 conditions per place. [2024-01-27 15:49:03,837 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 311 selfloop transitions, 34 changer transitions 4/356 dead transitions. [2024-01-27 15:49:03,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 356 transitions, 4676 flow [2024-01-27 15:49:03,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:03,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 233 transitions. [2024-01-27 15:49:03,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2024-01-27 15:49:03,839 INFO L175 Difference]: Start difference. First operand has 296 places, 290 transitions, 3231 flow. Second operand 11 states and 233 transitions. [2024-01-27 15:49:03,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 356 transitions, 4676 flow [2024-01-27 15:49:04,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 356 transitions, 4350 flow, removed 144 selfloop flow, removed 6 redundant places. [2024-01-27 15:49:04,447 INFO L231 Difference]: Finished difference. Result has 303 places, 295 transitions, 3217 flow [2024-01-27 15:49:04,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3217, PETRI_PLACES=303, PETRI_TRANSITIONS=295} [2024-01-27 15:49:04,447 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 258 predicate places. [2024-01-27 15:49:04,448 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 295 transitions, 3217 flow [2024-01-27 15:49:04,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:04,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:04,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:04,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-27 15:49:04,448 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:04,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:04,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1003751935, now seen corresponding path program 37 times [2024-01-27 15:49:04,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:04,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364601556] [2024-01-27 15:49:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:04,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:04,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364601556] [2024-01-27 15:49:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364601556] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:04,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:04,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:04,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653480236] [2024-01-27 15:49:04,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:04,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:04,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:04,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 295 transitions, 3217 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:04,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:04,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:06,482 INFO L124 PetriNetUnfolderBase]: 5522/9834 cut-off events. [2024-01-27 15:49:06,483 INFO L125 PetriNetUnfolderBase]: For 301673/301965 co-relation queries the response was YES. [2024-01-27 15:49:06,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48560 conditions, 9834 events. 5522/9834 cut-off events. For 301673/301965 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 77773 event pairs, 2901 based on Foata normal form. 71/9619 useless extension candidates. Maximal degree in co-relation 48422. Up to 8342 conditions per place. [2024-01-27 15:49:06,603 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 305 selfloop transitions, 33 changer transitions 4/349 dead transitions. [2024-01-27 15:49:06,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 349 transitions, 4404 flow [2024-01-27 15:49:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-01-27 15:49:06,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2024-01-27 15:49:06,605 INFO L175 Difference]: Start difference. First operand has 303 places, 295 transitions, 3217 flow. Second operand 11 states and 222 transitions. [2024-01-27 15:49:06,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 349 transitions, 4404 flow [2024-01-27 15:49:07,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 349 transitions, 4159 flow, removed 105 selfloop flow, removed 6 redundant places. [2024-01-27 15:49:07,081 INFO L231 Difference]: Finished difference. Result has 309 places, 298 transitions, 3123 flow [2024-01-27 15:49:07,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3123, PETRI_PLACES=309, PETRI_TRANSITIONS=298} [2024-01-27 15:49:07,083 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 264 predicate places. [2024-01-27 15:49:07,083 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 298 transitions, 3123 flow [2024-01-27 15:49:07,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:07,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:07,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:07,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-27 15:49:07,083 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:07,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:07,084 INFO L85 PathProgramCache]: Analyzing trace with hash -588575483, now seen corresponding path program 38 times [2024-01-27 15:49:07,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:07,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021543403] [2024-01-27 15:49:07,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:07,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:07,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:07,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021543403] [2024-01-27 15:49:07,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021543403] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:07,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:07,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:07,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098868140] [2024-01-27 15:49:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:07,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:07,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:07,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:07,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:07,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 298 transitions, 3123 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:07,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:07,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:07,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:09,203 INFO L124 PetriNetUnfolderBase]: 5612/10068 cut-off events. [2024-01-27 15:49:09,204 INFO L125 PetriNetUnfolderBase]: For 304116/304392 co-relation queries the response was YES. [2024-01-27 15:49:09,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49250 conditions, 10068 events. 5612/10068 cut-off events. For 304116/304392 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 80563 event pairs, 2907 based on Foata normal form. 61/9826 useless extension candidates. Maximal degree in co-relation 49109. Up to 8377 conditions per place. [2024-01-27 15:49:09,313 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 316 selfloop transitions, 35 changer transitions 4/362 dead transitions. [2024-01-27 15:49:09,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 362 transitions, 4593 flow [2024-01-27 15:49:09,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:09,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2024-01-27 15:49:09,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2024-01-27 15:49:09,315 INFO L175 Difference]: Start difference. First operand has 309 places, 298 transitions, 3123 flow. Second operand 11 states and 232 transitions. [2024-01-27 15:49:09,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 362 transitions, 4593 flow [2024-01-27 15:49:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 362 transitions, 4467 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-01-27 15:49:09,725 INFO L231 Difference]: Finished difference. Result has 314 places, 303 transitions, 3319 flow [2024-01-27 15:49:09,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3319, PETRI_PLACES=314, PETRI_TRANSITIONS=303} [2024-01-27 15:49:09,726 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 269 predicate places. [2024-01-27 15:49:09,726 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 303 transitions, 3319 flow [2024-01-27 15:49:09,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:09,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:09,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-27 15:49:09,727 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:09,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:09,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2051063017, now seen corresponding path program 39 times [2024-01-27 15:49:09,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:09,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233884254] [2024-01-27 15:49:09,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:09,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:10,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:10,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233884254] [2024-01-27 15:49:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233884254] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:10,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402741545] [2024-01-27 15:49:10,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:10,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:10,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:10,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:10,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:10,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:10,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 303 transitions, 3319 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:11,729 INFO L124 PetriNetUnfolderBase]: 5612/10027 cut-off events. [2024-01-27 15:49:11,730 INFO L125 PetriNetUnfolderBase]: For 318968/319244 co-relation queries the response was YES. [2024-01-27 15:49:11,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49624 conditions, 10027 events. 5612/10027 cut-off events. For 318968/319244 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 79724 event pairs, 2989 based on Foata normal form. 67/9809 useless extension candidates. Maximal degree in co-relation 49480. Up to 8454 conditions per place. [2024-01-27 15:49:11,855 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 310 selfloop transitions, 36 changer transitions 5/358 dead transitions. [2024-01-27 15:49:11,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 358 transitions, 4546 flow [2024-01-27 15:49:11,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:11,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:11,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-01-27 15:49:11,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2024-01-27 15:49:11,856 INFO L175 Difference]: Start difference. First operand has 314 places, 303 transitions, 3319 flow. Second operand 11 states and 225 transitions. [2024-01-27 15:49:11,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 358 transitions, 4546 flow [2024-01-27 15:49:12,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 358 transitions, 4286 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-01-27 15:49:12,358 INFO L231 Difference]: Finished difference. Result has 320 places, 307 transitions, 3226 flow [2024-01-27 15:49:12,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3059, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3226, PETRI_PLACES=320, PETRI_TRANSITIONS=307} [2024-01-27 15:49:12,358 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-01-27 15:49:12,358 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 307 transitions, 3226 flow [2024-01-27 15:49:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:12,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-27 15:49:12,359 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:12,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1551983555, now seen corresponding path program 40 times [2024-01-27 15:49:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930838136] [2024-01-27 15:49:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:12,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930838136] [2024-01-27 15:49:12,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930838136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:12,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:12,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205877922] [2024-01-27 15:49:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:12,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:12,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:12,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:12,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:12,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 307 transitions, 3226 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:12,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:12,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:12,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:14,479 INFO L124 PetriNetUnfolderBase]: 5664/10118 cut-off events. [2024-01-27 15:49:14,479 INFO L125 PetriNetUnfolderBase]: For 299238/299538 co-relation queries the response was YES. [2024-01-27 15:49:14,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48662 conditions, 10118 events. 5664/10118 cut-off events. For 299238/299538 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 80605 event pairs, 3053 based on Foata normal form. 83/9908 useless extension candidates. Maximal degree in co-relation 48515. Up to 8603 conditions per place. [2024-01-27 15:49:14,596 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 310 selfloop transitions, 36 changer transitions 4/357 dead transitions. [2024-01-27 15:49:14,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 357 transitions, 4356 flow [2024-01-27 15:49:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-01-27 15:49:14,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-01-27 15:49:14,598 INFO L175 Difference]: Start difference. First operand has 320 places, 307 transitions, 3226 flow. Second operand 11 states and 220 transitions. [2024-01-27 15:49:14,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 357 transitions, 4356 flow [2024-01-27 15:49:14,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 357 transitions, 4190 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-01-27 15:49:14,980 INFO L231 Difference]: Finished difference. Result has 324 places, 310 transitions, 3224 flow [2024-01-27 15:49:14,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3224, PETRI_PLACES=324, PETRI_TRANSITIONS=310} [2024-01-27 15:49:14,980 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 279 predicate places. [2024-01-27 15:49:14,980 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 310 transitions, 3224 flow [2024-01-27 15:49:14,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:14,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:14,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:14,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-27 15:49:14,981 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:14,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:14,981 INFO L85 PathProgramCache]: Analyzing trace with hash 2095630971, now seen corresponding path program 41 times [2024-01-27 15:49:14,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515070901] [2024-01-27 15:49:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:14,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:15,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:15,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:15,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515070901] [2024-01-27 15:49:15,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515070901] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:15,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:15,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:15,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582175536] [2024-01-27 15:49:15,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:15,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:15,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:15,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:15,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:15,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:15,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 310 transitions, 3224 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:15,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:15,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:15,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:16,986 INFO L124 PetriNetUnfolderBase]: 5664/10146 cut-off events. [2024-01-27 15:49:16,986 INFO L125 PetriNetUnfolderBase]: For 294131/294431 co-relation queries the response was YES. [2024-01-27 15:49:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48355 conditions, 10146 events. 5664/10146 cut-off events. For 294131/294431 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 81156 event pairs, 3025 based on Foata normal form. 83/9938 useless extension candidates. Maximal degree in co-relation 48206. Up to 8547 conditions per place. [2024-01-27 15:49:17,111 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 311 selfloop transitions, 40 changer transitions 5/363 dead transitions. [2024-01-27 15:49:17,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 363 transitions, 4389 flow [2024-01-27 15:49:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:17,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-01-27 15:49:17,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426877470355731 [2024-01-27 15:49:17,113 INFO L175 Difference]: Start difference. First operand has 324 places, 310 transitions, 3224 flow. Second operand 11 states and 224 transitions. [2024-01-27 15:49:17,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 363 transitions, 4389 flow [2024-01-27 15:49:17,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 363 transitions, 4223 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-01-27 15:49:17,513 INFO L231 Difference]: Finished difference. Result has 328 places, 314 transitions, 3246 flow [2024-01-27 15:49:17,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3058, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3246, PETRI_PLACES=328, PETRI_TRANSITIONS=314} [2024-01-27 15:49:17,513 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-01-27 15:49:17,513 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 314 transitions, 3246 flow [2024-01-27 15:49:17,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:17,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:17,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-27 15:49:17,514 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:17,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:17,514 INFO L85 PathProgramCache]: Analyzing trace with hash 229734627, now seen corresponding path program 42 times [2024-01-27 15:49:17,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334849595] [2024-01-27 15:49:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:17,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:17,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:17,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:17,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334849595] [2024-01-27 15:49:17,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334849595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:49:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-01-27 15:49:17,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289191958] [2024-01-27 15:49:17,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:17,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-27 15:49:17,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:17,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-27 15:49:17,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-01-27 15:49:17,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2024-01-27 15:49:17,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 314 transitions, 3246 flow. Second operand has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:17,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:17,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2024-01-27 15:49:17,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:19,633 INFO L124 PetriNetUnfolderBase]: 5664/10185 cut-off events. [2024-01-27 15:49:19,634 INFO L125 PetriNetUnfolderBase]: For 292955/293255 co-relation queries the response was YES. [2024-01-27 15:49:19,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48321 conditions, 10185 events. 5664/10185 cut-off events. For 292955/293255 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 81931 event pairs, 2993 based on Foata normal form. 75/9944 useless extension candidates. Maximal degree in co-relation 48170. Up to 8620 conditions per place. [2024-01-27 15:49:19,798 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 315 selfloop transitions, 34 changer transitions 4/360 dead transitions. [2024-01-27 15:49:19,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 360 transitions, 4310 flow [2024-01-27 15:49:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:49:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:49:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-01-27 15:49:19,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2024-01-27 15:49:19,811 INFO L175 Difference]: Start difference. First operand has 328 places, 314 transitions, 3246 flow. Second operand 11 states and 216 transitions. [2024-01-27 15:49:19,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 360 transitions, 4310 flow [2024-01-27 15:49:20,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 360 transitions, 4124 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-01-27 15:49:20,371 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 3152 flow [2024-01-27 15:49:20,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3152, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-01-27 15:49:20,372 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 287 predicate places. [2024-01-27 15:49:20,372 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 3152 flow [2024-01-27 15:49:20,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.818181818181818) internal successors, (141), 11 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) [2024-01-27 15:49:20,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:20,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:20,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-27 15:49:20,373 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:20,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:20,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1474455309, now seen corresponding path program 1 times [2024-01-27 15:49:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267278942] [2024-01-27 15:49:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:20,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:20,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:20,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267278942] [2024-01-27 15:49:20,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267278942] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:49:20,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580508745] [2024-01-27 15:49:20,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:20,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:20,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:49:20,478 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) [2024-01-27 15:49:20,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:49:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:20,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:49:20,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:49:20,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:20,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:49:20,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580508745] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:49:20,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:49:20,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-01-27 15:49:20,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983306344] [2024-01-27 15:49:20,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:49:20,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:49:20,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:49:20,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-27 15:49:20,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:49:20,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 316 transitions, 3152 flow. Second operand has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 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) [2024-01-27 15:49:20,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:20,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:49:20,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:24,032 INFO L124 PetriNetUnfolderBase]: 9506/18004 cut-off events. [2024-01-27 15:49:24,032 INFO L125 PetriNetUnfolderBase]: For 617897/618913 co-relation queries the response was YES. [2024-01-27 15:49:24,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87038 conditions, 18004 events. 9506/18004 cut-off events. For 617897/618913 co-relation queries the response was YES. Maximal size of possible extension queue 1461. Compared 167869 event pairs, 5954 based on Foata normal form. 553/17896 useless extension candidates. Maximal degree in co-relation 86885. Up to 7693 conditions per place. [2024-01-27 15:49:24,559 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 526 selfloop transitions, 6 changer transitions 12/590 dead transitions. [2024-01-27 15:49:24,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 590 transitions, 7067 flow [2024-01-27 15:49:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:49:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:49:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-01-27 15:49:24,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468944099378882 [2024-01-27 15:49:24,560 INFO L175 Difference]: Start difference. First operand has 332 places, 316 transitions, 3152 flow. Second operand 7 states and 151 transitions. [2024-01-27 15:49:24,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 590 transitions, 7067 flow [2024-01-27 15:49:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 590 transitions, 6935 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-27 15:49:25,399 INFO L231 Difference]: Finished difference. Result has 334 places, 320 transitions, 3141 flow [2024-01-27 15:49:25,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3141, PETRI_PLACES=334, PETRI_TRANSITIONS=320} [2024-01-27 15:49:25,400 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 289 predicate places. [2024-01-27 15:49:25,400 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 320 transitions, 3141 flow [2024-01-27 15:49:25,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.166666666666668) internal successors, (194), 12 states have internal predecessors, (194), 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) [2024-01-27 15:49:25,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:25,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:25,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:49:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-01-27 15:49:25,612 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:25,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:25,612 INFO L85 PathProgramCache]: Analyzing trace with hash -501090695, now seen corresponding path program 1 times [2024-01-27 15:49:25,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:25,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279796827] [2024-01-27 15:49:25,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:25,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:25,723 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:25,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279796827] [2024-01-27 15:49:25,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279796827] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:49:25,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221397358] [2024-01-27 15:49:25,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:25,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:25,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:49:25,744 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) [2024-01-27 15:49:25,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:49:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:25,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:49:25,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:49:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:25,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:49:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221397358] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:25,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:49:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-01-27 15:49:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565992486] [2024-01-27 15:49:25,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:25,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:49:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:49:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:49:25,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:49:25,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 320 transitions, 3141 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-01-27 15:49:25,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:25,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:49:25,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:30,159 INFO L124 PetriNetUnfolderBase]: 10469/20065 cut-off events. [2024-01-27 15:49:30,159 INFO L125 PetriNetUnfolderBase]: For 844662/847064 co-relation queries the response was YES. [2024-01-27 15:49:30,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100705 conditions, 20065 events. 10469/20065 cut-off events. For 844662/847064 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 191528 event pairs, 4037 based on Foata normal form. 1342/20823 useless extension candidates. Maximal degree in co-relation 100548. Up to 8657 conditions per place. [2024-01-27 15:49:30,741 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 423 selfloop transitions, 34 changer transitions 0/503 dead transitions. [2024-01-27 15:49:30,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 503 transitions, 6139 flow [2024-01-27 15:49:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:49:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:49:30,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-01-27 15:49:30,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-01-27 15:49:30,742 INFO L175 Difference]: Start difference. First operand has 334 places, 320 transitions, 3141 flow. Second operand 4 states and 120 transitions. [2024-01-27 15:49:30,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 503 transitions, 6139 flow [2024-01-27 15:49:31,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 503 transitions, 6116 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-01-27 15:49:31,772 INFO L231 Difference]: Finished difference. Result has 336 places, 331 transitions, 3497 flow [2024-01-27 15:49:31,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3497, PETRI_PLACES=336, PETRI_TRANSITIONS=331} [2024-01-27 15:49:31,773 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 291 predicate places. [2024-01-27 15:49:31,773 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 331 transitions, 3497 flow [2024-01-27 15:49:31,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-01-27 15:49:31,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:31,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:31,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-01-27 15:49:31,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-01-27 15:49:31,984 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:31,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:31,985 INFO L85 PathProgramCache]: Analyzing trace with hash -914983494, now seen corresponding path program 2 times [2024-01-27 15:49:31,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:31,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838703130] [2024-01-27 15:49:31,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:31,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:32,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:32,396 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:32,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838703130] [2024-01-27 15:49:32,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838703130] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:49:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134335318] [2024-01-27 15:49:32,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:49:32,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:32,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:49:32,412 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:49:32,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:49:32,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:49:32,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:49:32,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 13 conjunts are in the unsatisfiable core [2024-01-27 15:49:32,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:49:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:49:32,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:49:32,679 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-01-27 15:49:32,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-01-27 15:49:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:49:32,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134335318] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:49:32,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:49:32,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 13 [2024-01-27 15:49:32,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96943613] [2024-01-27 15:49:32,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:49:32,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:49:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:32,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:49:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:49:32,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 46 [2024-01-27 15:49:32,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 331 transitions, 3497 flow. Second operand has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 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) [2024-01-27 15:49:32,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:32,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 46 [2024-01-27 15:49:32,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:38,992 INFO L124 PetriNetUnfolderBase]: 15154/28092 cut-off events. [2024-01-27 15:49:38,992 INFO L125 PetriNetUnfolderBase]: For 1133231/1136439 co-relation queries the response was YES. [2024-01-27 15:49:39,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147839 conditions, 28092 events. 15154/28092 cut-off events. For 1133231/1136439 co-relation queries the response was YES. Maximal size of possible extension queue 1896. Compared 263813 event pairs, 6455 based on Foata normal form. 312/27063 useless extension candidates. Maximal degree in co-relation 147681. Up to 18910 conditions per place. [2024-01-27 15:49:39,561 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 434 selfloop transitions, 23 changer transitions 0/501 dead transitions. [2024-01-27 15:49:39,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 501 transitions, 6320 flow [2024-01-27 15:49:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:49:39,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:49:39,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 295 transitions. [2024-01-27 15:49:39,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4008152173913043 [2024-01-27 15:49:39,563 INFO L175 Difference]: Start difference. First operand has 336 places, 331 transitions, 3497 flow. Second operand 16 states and 295 transitions. [2024-01-27 15:49:39,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 501 transitions, 6320 flow [2024-01-27 15:49:41,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 501 transitions, 6171 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-01-27 15:49:41,502 INFO L231 Difference]: Finished difference. Result has 351 places, 345 transitions, 3539 flow [2024-01-27 15:49:41,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3539, PETRI_PLACES=351, PETRI_TRANSITIONS=345} [2024-01-27 15:49:41,503 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 306 predicate places. [2024-01-27 15:49:41,503 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 345 transitions, 3539 flow [2024-01-27 15:49:41,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.714285714285714) internal successors, (192), 14 states have internal predecessors, (192), 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) [2024-01-27 15:49:41,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:41,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:41,518 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:49:41,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:41,718 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:41,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1815907974, now seen corresponding path program 1 times [2024-01-27 15:49:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:41,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734960327] [2024-01-27 15:49:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:41,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:41,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:49:41,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734960327] [2024-01-27 15:49:41,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734960327] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:49:41,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351188743] [2024-01-27 15:49:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:41,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:41,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:49:41,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:49:41,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:49:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:41,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-27 15:49:41,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:49:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:49:42,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:49:42,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351188743] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:49:42,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:49:42,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-01-27 15:49:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816919028] [2024-01-27 15:49:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:49:42,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:49:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:49:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-01-27 15:49:42,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:49:42,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 345 transitions, 3539 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-01-27 15:49:42,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:42,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:49:42,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:49:46,280 INFO L124 PetriNetUnfolderBase]: 9450/18855 cut-off events. [2024-01-27 15:49:46,280 INFO L125 PetriNetUnfolderBase]: For 833958/838784 co-relation queries the response was YES. [2024-01-27 15:49:46,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114415 conditions, 18855 events. 9450/18855 cut-off events. For 833958/838784 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 173697 event pairs, 4491 based on Foata normal form. 1783/20576 useless extension candidates. Maximal degree in co-relation 114257. Up to 8168 conditions per place. [2024-01-27 15:49:46,539 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 112 selfloop transitions, 12 changer transitions 141/274 dead transitions. [2024-01-27 15:49:46,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 274 transitions, 3870 flow [2024-01-27 15:49:46,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:49:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:49:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 126 transitions. [2024-01-27 15:49:46,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-01-27 15:49:46,541 INFO L175 Difference]: Start difference. First operand has 351 places, 345 transitions, 3539 flow. Second operand 4 states and 126 transitions. [2024-01-27 15:49:46,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 274 transitions, 3870 flow [2024-01-27 15:49:48,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 274 transitions, 3673 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-01-27 15:49:48,246 INFO L231 Difference]: Finished difference. Result has 341 places, 77 transitions, 999 flow [2024-01-27 15:49:48,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=999, PETRI_PLACES=341, PETRI_TRANSITIONS=77} [2024-01-27 15:49:48,247 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 296 predicate places. [2024-01-27 15:49:48,247 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 77 transitions, 999 flow [2024-01-27 15:49:48,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2024-01-27 15:49:48,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:49:48,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:49:48,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:49:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-01-27 15:49:48,459 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:49:48,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:49:48,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1152341989, now seen corresponding path program 1 times [2024-01-27 15:49:48,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:49:48,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317656691] [2024-01-27 15:49:48,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:48,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:49:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:49:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:49:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317656691] [2024-01-27 15:49:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317656691] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:49:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227702789] [2024-01-27 15:49:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:49:48,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:49:48,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:49:48,536 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:49:48,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:49:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:49:48,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:49:48,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:49:48,732 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:49:48,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:49:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:49:48,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227702789] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:49:48,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:49:48,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-01-27 15:49:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543895615] [2024-01-27 15:49:48,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:49:48,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-01-27 15:49:48,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:49:48,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-01-27 15:49:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-01-27 15:49:48,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2024-01-27 15:49:48,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 77 transitions, 999 flow. Second operand has 12 states, 12 states have (on average 15.916666666666666) internal successors, (191), 12 states have internal predecessors, (191), 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) [2024-01-27 15:49:48,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:49:48,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2024-01-27 15:49:48,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand