./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ --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 0.2.3-dev-30e01a7 [2023-11-23 21:35:05,118 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:35:05,255 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:35:05,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:35:05,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:35:05,312 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:35:05,313 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:35:05,313 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:35:05,314 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:35:05,320 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:35:05,320 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:35:05,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:35:05,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:35:05,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:35:05,325 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:35:05,326 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:35:05,326 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:35:05,327 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:35:05,327 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:35:05,328 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:35:05,328 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:35:05,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:35:05,330 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:35:05,330 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:35:05,330 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:35:05,331 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:35:05,331 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:35:05,332 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:35:05,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:35:05,333 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:35:05,335 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:35:05,335 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:05,336 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:35:05,336 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:35:05,336 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:35:05,337 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:35:05,337 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:35:05,337 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:35:05,338 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:35:05,338 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:35:05,338 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:35:05,339 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:35:05,339 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2023-11-23 21:35:05,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:35:05,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:35:05,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:35:05,725 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:35:05,725 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:35:05,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-23 21:35:08,867 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:35:09,149 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:35:09,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2023-11-23 21:35:09,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/data/05c6f23d6/500bc5afdf254850936b81417b5ad3f1/FLAG1b39baee6 [2023-11-23 21:35:09,204 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/data/05c6f23d6/500bc5afdf254850936b81417b5ad3f1 [2023-11-23 21:35:09,210 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:35:09,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:35:09,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:09,216 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:35:09,223 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:35:09,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,225 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@421b0de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09, skipping insertion in model container [2023-11-23 21:35:09,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,256 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:35:09,455 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-23 21:35:09,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:09,477 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:35:09,508 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3654,3667] [2023-11-23 21:35:09,513 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:35:09,523 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:35:09,523 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:35:09,532 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:35:09,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09 WrapperNode [2023-11-23 21:35:09,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:35:09,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:09,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:35:09,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:35:09,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,554 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,589 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 270 [2023-11-23 21:35:09,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:35:09,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:35:09,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:35:09,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:35:09,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,608 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,646 INFO L189 HeapSplitter]: Split 15 memory accesses to 5 slices as follows [2, 2, 2, 7, 2] [2023-11-23 21:35:09,647 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,669 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,673 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:35:09,674 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:35:09,675 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:35:09,675 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:35:09,675 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (1/1) ... [2023-11-23 21:35:09,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:35:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:35:09,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:35:09,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_486ebdf5-1a70-43c8-99da-6cceb1b4fa7d/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:35:09,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 21:35:09,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 21:35:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 21:35:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 21:35:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 21:35:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 21:35:09,756 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 21:35:09,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:35:09,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:35:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:35:09,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:35:09,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:35:09,760 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:35:09,903 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:35:09,905 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:35:10,404 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:35:10,977 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:35:10,977 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 21:35:10,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:10 BoogieIcfgContainer [2023-11-23 21:35:10,978 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:35:10,981 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:35:10,981 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:35:10,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:35:10,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:35:09" (1/3) ... [2023-11-23 21:35:10,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a98e545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:10, skipping insertion in model container [2023-11-23 21:35:10,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:35:09" (2/3) ... [2023-11-23 21:35:10,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a98e545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:35:10, skipping insertion in model container [2023-11-23 21:35:10,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:35:10" (3/3) ... [2023-11-23 21:35:10,990 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2023-11-23 21:35:11,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:35:11,013 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:35:11,013 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:35:11,014 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:35:11,080 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:35:11,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 46 transitions, 113 flow [2023-11-23 21:35:11,186 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2023-11-23 21:35:11,186 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:35:11,197 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. [2023-11-23 21:35:11,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 46 transitions, 113 flow [2023-11-23 21:35:11,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 42 transitions, 102 flow [2023-11-23 21:35:11,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:35:11,241 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;@60f37ec4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:35:11,241 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 21:35:11,273 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 21:35:11,273 INFO L124 PetriNetUnfolderBase]: 7/41 cut-off events. [2023-11-23 21:35:11,273 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 21:35:11,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:11,274 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] [2023-11-23 21:35:11,275 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)] === [2023-11-23 21:35:11,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1512367794, now seen corresponding path program 1 times [2023-11-23 21:35:11,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:11,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257328779] [2023-11-23 21:35:11,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:11,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:11,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:11,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257328779] [2023-11-23 21:35:11,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257328779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:11,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:11,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899918566] [2023-11-23 21:35:11,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:11,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:35:11,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:11,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:35:11,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:35:11,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-23 21:35:11,666 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) [2023-11-23 21:35:11,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:11,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-23 21:35:11,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:12,217 INFO L124 PetriNetUnfolderBase]: 1141/1823 cut-off events. [2023-11-23 21:35:12,217 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2023-11-23 21:35:12,230 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. [2023-11-23 21:35:12,251 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 32 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-23 21:35:12,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 162 flow [2023-11-23 21:35:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:35:12,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-23 21:35:12,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 56 transitions. [2023-11-23 21:35:12,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2023-11-23 21:35:12,274 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 56 transitions. [2023-11-23 21:35:12,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 56 transitions. [2023-11-23 21:35:12,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:12,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 56 transitions. [2023-11-23 21:35:12,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 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) [2023-11-23 21:35:12,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-11-23 21:35:12,291 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 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) [2023-11-23 21:35:12,294 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 102 flow. Second operand 2 states and 56 transitions. [2023-11-23 21:35:12,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 162 flow [2023-11-23 21:35:12,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 40 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:12,312 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 86 flow [2023-11-23 21:35:12,316 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} [2023-11-23 21:35:12,321 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -5 predicate places. [2023-11-23 21:35:12,322 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 86 flow [2023-11-23 21:35:12,324 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) [2023-11-23 21:35:12,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:12,325 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] [2023-11-23 21:35:12,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:35:12,326 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)] === [2023-11-23 21:35:12,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 483062152, now seen corresponding path program 1 times [2023-11-23 21:35:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984586132] [2023-11-23 21:35:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:12,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984586132] [2023-11-23 21:35:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984586132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386025407] [2023-11-23 21:35:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:12,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:12,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:12,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:12,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:12,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-23 21:35:12,786 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) [2023-11-23 21:35:12,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:12,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-23 21:35:12,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:13,156 INFO L124 PetriNetUnfolderBase]: 1033/1727 cut-off events. [2023-11-23 21:35:13,156 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-23 21:35:13,161 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. [2023-11-23 21:35:13,173 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 44 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-11-23 21:35:13,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 208 flow [2023-11-23 21:35:13,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:13,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:35:13,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2023-11-23 21:35:13,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2023-11-23 21:35:13,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 80 transitions. [2023-11-23 21:35:13,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 80 transitions. [2023-11-23 21:35:13,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:13,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 80 transitions. [2023-11-23 21:35:13,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:13,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-23 21:35:13,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-23 21:35:13,195 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 86 flow. Second operand 3 states and 80 transitions. [2023-11-23 21:35:13,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 208 flow [2023-11-23 21:35:13,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 208 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 21:35:13,200 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 98 flow [2023-11-23 21:35:13,200 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} [2023-11-23 21:35:13,201 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-11-23 21:35:13,201 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 98 flow [2023-11-23 21:35:13,202 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) [2023-11-23 21:35:13,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:13,202 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] [2023-11-23 21:35:13,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:35:13,203 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)] === [2023-11-23 21:35:13,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:13,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1343573562, now seen corresponding path program 2 times [2023-11-23 21:35:13,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:13,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273818640] [2023-11-23 21:35:13,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:13,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:35:13,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:13,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273818640] [2023-11-23 21:35:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273818640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:13,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:13,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:35:13,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245896016] [2023-11-23 21:35:13,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:13,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:13,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:13,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:13,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:13,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-23 21:35:13,594 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) [2023-11-23 21:35:13,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:13,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-23 21:35:13,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:14,022 INFO L124 PetriNetUnfolderBase]: 1082/1826 cut-off events. [2023-11-23 21:35:14,022 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2023-11-23 21:35:14,028 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 9006 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. [2023-11-23 21:35:14,039 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 32 selfloop transitions, 2 changer transitions 15/57 dead transitions. [2023-11-23 21:35:14,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 57 transitions, 231 flow [2023-11-23 21:35:14,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:35:14,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 21:35:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2023-11-23 21:35:14,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608695652173913 [2023-11-23 21:35:14,044 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 106 transitions. [2023-11-23 21:35:14,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 106 transitions. [2023-11-23 21:35:14,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:14,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 106 transitions. [2023-11-23 21:35:14,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 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) [2023-11-23 21:35:14,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:14,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:14,049 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 98 flow. Second operand 5 states and 106 transitions. [2023-11-23 21:35:14,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 57 transitions, 231 flow [2023-11-23 21:35:14,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 21:35:14,052 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 118 flow [2023-11-23 21:35:14,053 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} [2023-11-23 21:35:14,055 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-11-23 21:35:14,056 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 118 flow [2023-11-23 21:35:14,056 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) [2023-11-23 21:35:14,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:14,056 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] [2023-11-23 21:35:14,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:35:14,059 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)] === [2023-11-23 21:35:14,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:14,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2073841455, now seen corresponding path program 1 times [2023-11-23 21:35:14,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:14,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508889119] [2023-11-23 21:35:14,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:14,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:35:14,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:14,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508889119] [2023-11-23 21:35:14,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508889119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:14,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:14,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:35:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115085349] [2023-11-23 21:35:14,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:14,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:35:14,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:35:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:35:14,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-23 21:35:14,315 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) [2023-11-23 21:35:14,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:14,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-23 21:35:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:14,727 INFO L124 PetriNetUnfolderBase]: 1240/2099 cut-off events. [2023-11-23 21:35:14,728 INFO L125 PetriNetUnfolderBase]: For 495/495 co-relation queries the response was YES. [2023-11-23 21:35:14,737 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 10841 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. [2023-11-23 21:35:14,753 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 33 selfloop transitions, 2 changer transitions 18/61 dead transitions. [2023-11-23 21:35:14,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 276 flow [2023-11-23 21:35:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:35:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 21:35:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2023-11-23 21:35:14,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2023-11-23 21:35:14,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 96 transitions. [2023-11-23 21:35:14,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 96 transitions. [2023-11-23 21:35:14,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:14,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 96 transitions. [2023-11-23 21:35:14,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:35:14,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2023-11-23 21:35:14,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2023-11-23 21:35:14,765 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 118 flow. Second operand 4 states and 96 transitions. [2023-11-23 21:35:14,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 276 flow [2023-11-23 21:35:14,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 264 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-23 21:35:14,773 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 124 flow [2023-11-23 21:35:14,773 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} [2023-11-23 21:35:14,775 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-23 21:35:14,776 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 124 flow [2023-11-23 21:35:14,776 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) [2023-11-23 21:35:14,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:14,776 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] [2023-11-23 21:35:14,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:35:14,782 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)] === [2023-11-23 21:35:14,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash -503728581, now seen corresponding path program 1 times [2023-11-23 21:35:14,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:14,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798247125] [2023-11-23 21:35:14,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:14,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:16,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:16,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798247125] [2023-11-23 21:35:16,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798247125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:16,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:16,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389230199] [2023-11-23 21:35:16,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:16,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:16,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:16,434 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) [2023-11-23 21:35:16,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:16,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:16,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:17,356 INFO L124 PetriNetUnfolderBase]: 1699/2863 cut-off events. [2023-11-23 21:35:17,356 INFO L125 PetriNetUnfolderBase]: For 780/784 co-relation queries the response was YES. [2023-11-23 21:35:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6255 conditions, 2863 events. 1699/2863 cut-off events. For 780/784 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16077 event pairs, 108 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 6246. Up to 1730 conditions per place. [2023-11-23 21:35:17,387 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 112 selfloop transitions, 27 changer transitions 4/150 dead transitions. [2023-11-23 21:35:17,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 150 transitions, 711 flow [2023-11-23 21:35:17,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:35:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 21:35:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 261 transitions. [2023-11-23 21:35:17,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2023-11-23 21:35:17,390 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 261 transitions. [2023-11-23 21:35:17,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 261 transitions. [2023-11-23 21:35:17,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:17,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 261 transitions. [2023-11-23 21:35:17,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.75) internal successors, (261), 12 states have internal predecessors, (261), 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) [2023-11-23 21:35:17,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:17,395 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:17,396 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 124 flow. Second operand 12 states and 261 transitions. [2023-11-23 21:35:17,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 150 transitions, 711 flow [2023-11-23 21:35:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 150 transitions, 693 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-23 21:35:17,401 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 270 flow [2023-11-23 21:35:17,402 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} [2023-11-23 21:35:17,403 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-23 21:35:17,403 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 270 flow [2023-11-23 21:35:17,403 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) [2023-11-23 21:35:17,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:17,404 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] [2023-11-23 21:35:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:35:17,404 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)] === [2023-11-23 21:35:17,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1606494193, now seen corresponding path program 2 times [2023-11-23 21:35:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:17,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312761916] [2023-11-23 21:35:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:17,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:17,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:17,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312761916] [2023-11-23 21:35:17,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312761916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:17,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:17,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:35:17,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611325287] [2023-11-23 21:35:17,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:17,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:35:17,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:17,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:35:17,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:35:17,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 46 [2023-11-23 21:35:17,507 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) [2023-11-23 21:35:17,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:17,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 46 [2023-11-23 21:35:17,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:17,910 INFO L124 PetriNetUnfolderBase]: 1307/2260 cut-off events. [2023-11-23 21:35:17,910 INFO L125 PetriNetUnfolderBase]: For 1331/1335 co-relation queries the response was YES. [2023-11-23 21:35:17,921 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 11803 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. [2023-11-23 21:35:17,940 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 63 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-11-23 21:35:17,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 75 transitions, 421 flow [2023-11-23 21:35:17,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:35:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 21:35:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-23 21:35:17,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2023-11-23 21:35:17,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-23 21:35:17,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-23 21:35:17,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:17,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-23 21:35:17,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2023-11-23 21:35:17,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-23 21:35:17,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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) [2023-11-23 21:35:17,945 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 270 flow. Second operand 3 states and 76 transitions. [2023-11-23 21:35:17,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 75 transitions, 421 flow [2023-11-23 21:35:17,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 415 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 21:35:17,951 INFO L231 Difference]: Finished difference. Result has 64 places, 67 transitions, 273 flow [2023-11-23 21:35:17,952 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} [2023-11-23 21:35:17,953 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2023-11-23 21:35:17,953 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 67 transitions, 273 flow [2023-11-23 21:35:17,954 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) [2023-11-23 21:35:17,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:17,954 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] [2023-11-23 21:35:17,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:35:17,955 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)] === [2023-11-23 21:35:17,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1077678769, now seen corresponding path program 3 times [2023-11-23 21:35:17,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:17,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732425305] [2023-11-23 21:35:17,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:17,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:19,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:19,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732425305] [2023-11-23 21:35:19,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732425305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:19,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:19,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527424828] [2023-11-23 21:35:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:19,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:19,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:19,189 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) [2023-11-23 21:35:19,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:19,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:19,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:20,149 INFO L124 PetriNetUnfolderBase]: 1564/2687 cut-off events. [2023-11-23 21:35:20,149 INFO L125 PetriNetUnfolderBase]: For 2156/2156 co-relation queries the response was YES. [2023-11-23 21:35:20,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 2687 events. 1564/2687 cut-off events. For 2156/2156 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14784 event pairs, 387 based on Foata normal form. 1/2607 useless extension candidates. Maximal degree in co-relation 7454. Up to 1928 conditions per place. [2023-11-23 21:35:20,190 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 98 selfloop transitions, 28 changer transitions 4/137 dead transitions. [2023-11-23 21:35:20,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 137 transitions, 798 flow [2023-11-23 21:35:20,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-23 21:35:20,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-23 21:35:20,193 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-23 21:35:20,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-23 21:35:20,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:20,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-23 21:35:20,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 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) [2023-11-23 21:35:20,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:20,197 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:20,198 INFO L175 Difference]: Start difference. First operand has 64 places, 67 transitions, 273 flow. Second operand 11 states and 223 transitions. [2023-11-23 21:35:20,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 137 transitions, 798 flow [2023-11-23 21:35:20,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 767 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-11-23 21:35:20,207 INFO L231 Difference]: Finished difference. Result has 76 places, 82 transitions, 420 flow [2023-11-23 21:35:20,208 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} [2023-11-23 21:35:20,209 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 31 predicate places. [2023-11-23 21:35:20,209 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 82 transitions, 420 flow [2023-11-23 21:35:20,209 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) [2023-11-23 21:35:20,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:20,210 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] [2023-11-23 21:35:20,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:35:20,210 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)] === [2023-11-23 21:35:20,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash 447732539, now seen corresponding path program 4 times [2023-11-23 21:35:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:20,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730006734] [2023-11-23 21:35:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:21,652 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:21,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730006734] [2023-11-23 21:35:21,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730006734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:21,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:21,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:21,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974346208] [2023-11-23 21:35:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:21,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:21,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:21,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:21,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:21,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:21,715 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) [2023-11-23 21:35:21,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:21,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:21,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:22,797 INFO L124 PetriNetUnfolderBase]: 1717/2985 cut-off events. [2023-11-23 21:35:22,797 INFO L125 PetriNetUnfolderBase]: For 2989/2989 co-relation queries the response was YES. [2023-11-23 21:35:22,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8469 conditions, 2985 events. 1717/2985 cut-off events. For 2989/2989 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16831 event pairs, 573 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 8451. Up to 2066 conditions per place. [2023-11-23 21:35:22,830 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 111 selfloop transitions, 34 changer transitions 4/156 dead transitions. [2023-11-23 21:35:22,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 1018 flow [2023-11-23 21:35:22,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:22,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:22,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 232 transitions. [2023-11-23 21:35:22,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45849802371541504 [2023-11-23 21:35:22,833 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 232 transitions. [2023-11-23 21:35:22,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 232 transitions. [2023-11-23 21:35:22,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:22,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 232 transitions. [2023-11-23 21:35:22,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.09090909090909) internal successors, (232), 11 states have internal predecessors, (232), 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) [2023-11-23 21:35:22,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:22,837 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:22,838 INFO L175 Difference]: Start difference. First operand has 76 places, 82 transitions, 420 flow. Second operand 11 states and 232 transitions. [2023-11-23 21:35:22,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 1018 flow [2023-11-23 21:35:22,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 156 transitions, 987 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-23 21:35:22,851 INFO L231 Difference]: Finished difference. Result has 91 places, 96 transitions, 615 flow [2023-11-23 21:35:22,851 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} [2023-11-23 21:35:22,854 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 46 predicate places. [2023-11-23 21:35:22,855 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 96 transitions, 615 flow [2023-11-23 21:35:22,855 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) [2023-11-23 21:35:22,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:22,855 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] [2023-11-23 21:35:22,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:35:22,856 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)] === [2023-11-23 21:35:22,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1490659131, now seen corresponding path program 5 times [2023-11-23 21:35:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:22,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952084342] [2023-11-23 21:35:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:24,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:24,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952084342] [2023-11-23 21:35:24,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952084342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:24,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:24,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736446253] [2023-11-23 21:35:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:24,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:24,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:24,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:24,269 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) [2023-11-23 21:35:24,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:24,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:24,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:25,333 INFO L124 PetriNetUnfolderBase]: 1953/3461 cut-off events. [2023-11-23 21:35:25,333 INFO L125 PetriNetUnfolderBase]: For 6403/6419 co-relation queries the response was YES. [2023-11-23 21:35:25,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10793 conditions, 3461 events. 1953/3461 cut-off events. For 6403/6419 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21024 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. [2023-11-23 21:35:25,386 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 45 changer transitions 4/184 dead transitions. [2023-11-23 21:35:25,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 184 transitions, 1310 flow [2023-11-23 21:35:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:35:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 21:35:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 260 transitions. [2023-11-23 21:35:25,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47101449275362317 [2023-11-23 21:35:25,389 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 260 transitions. [2023-11-23 21:35:25,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 260 transitions. [2023-11-23 21:35:25,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:25,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 260 transitions. [2023-11-23 21:35:25,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.666666666666668) internal successors, (260), 12 states have internal predecessors, (260), 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) [2023-11-23 21:35:25,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:25,393 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:25,393 INFO L175 Difference]: Start difference. First operand has 91 places, 96 transitions, 615 flow. Second operand 12 states and 260 transitions. [2023-11-23 21:35:25,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 184 transitions, 1310 flow [2023-11-23 21:35:25,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 184 transitions, 1280 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-11-23 21:35:25,411 INFO L231 Difference]: Finished difference. Result has 104 places, 105 transitions, 772 flow [2023-11-23 21:35:25,412 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} [2023-11-23 21:35:25,413 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 59 predicate places. [2023-11-23 21:35:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 105 transitions, 772 flow [2023-11-23 21:35:25,414 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) [2023-11-23 21:35:25,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:25,414 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] [2023-11-23 21:35:25,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:35:25,415 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)] === [2023-11-23 21:35:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1790488061, now seen corresponding path program 6 times [2023-11-23 21:35:25,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054414599] [2023-11-23 21:35:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:26,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:26,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054414599] [2023-11-23 21:35:26,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054414599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:26,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:26,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226164368] [2023-11-23 21:35:26,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:26,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:26,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:26,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:26,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:26,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:26,637 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) [2023-11-23 21:35:26,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:26,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:26,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:28,059 INFO L124 PetriNetUnfolderBase]: 2102/3768 cut-off events. [2023-11-23 21:35:28,060 INFO L125 PetriNetUnfolderBase]: For 9626/9642 co-relation queries the response was YES. [2023-11-23 21:35:28,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12483 conditions, 3768 events. 2102/3768 cut-off events. For 9626/9642 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23607 event pairs, 513 based on Foata normal form. 5/3654 useless extension candidates. Maximal degree in co-relation 12453. Up to 2569 conditions per place. [2023-11-23 21:35:28,116 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 133 selfloop transitions, 41 changer transitions 4/185 dead transitions. [2023-11-23 21:35:28,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 185 transitions, 1467 flow [2023-11-23 21:35:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:35:28,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 21:35:28,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 254 transitions. [2023-11-23 21:35:28,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601449275362319 [2023-11-23 21:35:28,120 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 254 transitions. [2023-11-23 21:35:28,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 254 transitions. [2023-11-23 21:35:28,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:28,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 254 transitions. [2023-11-23 21:35:28,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 21.166666666666668) internal successors, (254), 12 states have internal predecessors, (254), 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) [2023-11-23 21:35:28,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:28,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:28,125 INFO L175 Difference]: Start difference. First operand has 104 places, 105 transitions, 772 flow. Second operand 12 states and 254 transitions. [2023-11-23 21:35:28,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 185 transitions, 1467 flow [2023-11-23 21:35:28,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 185 transitions, 1376 flow, removed 23 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:28,167 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 850 flow [2023-11-23 21:35:28,169 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} [2023-11-23 21:35:28,170 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 67 predicate places. [2023-11-23 21:35:28,170 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 850 flow [2023-11-23 21:35:28,170 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) [2023-11-23 21:35:28,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:28,171 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] [2023-11-23 21:35:28,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:35:28,172 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)] === [2023-11-23 21:35:28,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1014326441, now seen corresponding path program 7 times [2023-11-23 21:35:28,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:28,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859444987] [2023-11-23 21:35:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:28,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:29,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:29,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859444987] [2023-11-23 21:35:29,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859444987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:29,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:29,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:29,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461892564] [2023-11-23 21:35:29,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:29,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:29,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:29,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:29,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:29,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:29,349 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) [2023-11-23 21:35:29,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:29,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:29,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:30,456 INFO L124 PetriNetUnfolderBase]: 2102/3766 cut-off events. [2023-11-23 21:35:30,456 INFO L125 PetriNetUnfolderBase]: For 11908/11940 co-relation queries the response was YES. [2023-11-23 21:35:30,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12848 conditions, 3766 events. 2102/3766 cut-off events. For 11908/11940 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 23567 event pairs, 533 based on Foata normal form. 21/3664 useless extension candidates. Maximal degree in co-relation 12814. Up to 2688 conditions per place. [2023-11-23 21:35:30,518 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 128 selfloop transitions, 40 changer transitions 4/179 dead transitions. [2023-11-23 21:35:30,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 179 transitions, 1484 flow [2023-11-23 21:35:30,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:35:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-23 21:35:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 244 transitions. [2023-11-23 21:35:30,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420289855072464 [2023-11-23 21:35:30,521 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 244 transitions. [2023-11-23 21:35:30,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 244 transitions. [2023-11-23 21:35:30,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:30,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 244 transitions. [2023-11-23 21:35:30,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 20.333333333333332) internal successors, (244), 12 states have internal predecessors, (244), 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) [2023-11-23 21:35:30,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:30,525 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 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) [2023-11-23 21:35:30,525 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 850 flow. Second operand 12 states and 244 transitions. [2023-11-23 21:35:30,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 179 transitions, 1484 flow [2023-11-23 21:35:30,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 179 transitions, 1375 flow, removed 31 selfloop flow, removed 7 redundant places. [2023-11-23 21:35:30,554 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 872 flow [2023-11-23 21:35:30,555 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} [2023-11-23 21:35:30,555 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2023-11-23 21:35:30,556 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 872 flow [2023-11-23 21:35:30,556 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) [2023-11-23 21:35:30,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:30,556 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] [2023-11-23 21:35:30,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:35:30,557 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)] === [2023-11-23 21:35:30,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:30,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1148452041, now seen corresponding path program 8 times [2023-11-23 21:35:30,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:30,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269116798] [2023-11-23 21:35:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:30,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:31,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269116798] [2023-11-23 21:35:31,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269116798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:31,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:31,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796620253] [2023-11-23 21:35:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:31,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:31,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:31,637 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) [2023-11-23 21:35:31,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:31,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:31,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:33,083 INFO L124 PetriNetUnfolderBase]: 2288/4093 cut-off events. [2023-11-23 21:35:33,083 INFO L125 PetriNetUnfolderBase]: For 12908/12940 co-relation queries the response was YES. [2023-11-23 21:35:33,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 4093 events. 2288/4093 cut-off events. For 12908/12940 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 26101 event pairs, 785 based on Foata normal form. 9/3969 useless extension candidates. Maximal degree in co-relation 13926. Up to 3033 conditions per place. [2023-11-23 21:35:33,130 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 135 selfloop transitions, 36 changer transitions 4/182 dead transitions. [2023-11-23 21:35:33,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 182 transitions, 1579 flow [2023-11-23 21:35:33,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:33,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:33,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 227 transitions. [2023-11-23 21:35:33,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44861660079051385 [2023-11-23 21:35:33,133 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 227 transitions. [2023-11-23 21:35:33,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 227 transitions. [2023-11-23 21:35:33,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:33,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 227 transitions. [2023-11-23 21:35:33,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.636363636363637) internal successors, (227), 11 states have internal predecessors, (227), 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) [2023-11-23 21:35:33,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:33,137 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:33,137 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 872 flow. Second operand 11 states and 227 transitions. [2023-11-23 21:35:33,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 182 transitions, 1579 flow [2023-11-23 21:35:33,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 182 transitions, 1485 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-11-23 21:35:33,170 INFO L231 Difference]: Finished difference. Result has 123 places, 123 transitions, 997 flow [2023-11-23 21:35:33,170 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} [2023-11-23 21:35:33,171 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 78 predicate places. [2023-11-23 21:35:33,171 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 123 transitions, 997 flow [2023-11-23 21:35:33,171 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) [2023-11-23 21:35:33,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:33,172 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] [2023-11-23 21:35:33,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:35:33,172 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)] === [2023-11-23 21:35:33,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:33,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1878574463, now seen corresponding path program 9 times [2023-11-23 21:35:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:33,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571646592] [2023-11-23 21:35:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:33,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:34,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:34,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571646592] [2023-11-23 21:35:34,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571646592] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:34,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:34,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:34,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955669452] [2023-11-23 21:35:34,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:34,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:34,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:34,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:34,409 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) [2023-11-23 21:35:34,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:34,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:34,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:35,657 INFO L124 PetriNetUnfolderBase]: 2462/4428 cut-off events. [2023-11-23 21:35:35,657 INFO L125 PetriNetUnfolderBase]: For 22255/22295 co-relation queries the response was YES. [2023-11-23 21:35:35,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16146 conditions, 4428 events. 2462/4428 cut-off events. For 22255/22295 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29101 event pairs, 887 based on Foata normal form. 11/4300 useless extension candidates. Maximal degree in co-relation 16105. Up to 3310 conditions per place. [2023-11-23 21:35:35,714 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 147 selfloop transitions, 36 changer transitions 4/194 dead transitions. [2023-11-23 21:35:35,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 194 transitions, 1762 flow [2023-11-23 21:35:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 230 transitions. [2023-11-23 21:35:35,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-11-23 21:35:35,717 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 230 transitions. [2023-11-23 21:35:35,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 230 transitions. [2023-11-23 21:35:35,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:35,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 230 transitions. [2023-11-23 21:35:35,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.90909090909091) internal successors, (230), 11 states have internal predecessors, (230), 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) [2023-11-23 21:35:35,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:35,721 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:35,722 INFO L175 Difference]: Start difference. First operand has 123 places, 123 transitions, 997 flow. Second operand 11 states and 230 transitions. [2023-11-23 21:35:35,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 194 transitions, 1762 flow [2023-11-23 21:35:35,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 1648 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-11-23 21:35:35,774 INFO L231 Difference]: Finished difference. Result has 131 places, 132 transitions, 1091 flow [2023-11-23 21:35:35,774 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} [2023-11-23 21:35:35,775 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 86 predicate places. [2023-11-23 21:35:35,775 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 132 transitions, 1091 flow [2023-11-23 21:35:35,776 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) [2023-11-23 21:35:35,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:35,776 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] [2023-11-23 21:35:35,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:35:35,777 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)] === [2023-11-23 21:35:35,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:35,777 INFO L85 PathProgramCache]: Analyzing trace with hash 934765565, now seen corresponding path program 10 times [2023-11-23 21:35:35,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:35,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218549672] [2023-11-23 21:35:35,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:35,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:36,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:36,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:36,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218549672] [2023-11-23 21:35:36,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218549672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:36,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:36,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007356708] [2023-11-23 21:35:36,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:36,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:36,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:36,764 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) [2023-11-23 21:35:36,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:36,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:36,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:38,019 INFO L124 PetriNetUnfolderBase]: 2672/4780 cut-off events. [2023-11-23 21:35:38,020 INFO L125 PetriNetUnfolderBase]: For 29442/29506 co-relation queries the response was YES. [2023-11-23 21:35:38,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18182 conditions, 4780 events. 2672/4780 cut-off events. For 29442/29506 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 31790 event pairs, 977 based on Foata normal form. 9/4635 useless extension candidates. Maximal degree in co-relation 18137. Up to 3593 conditions per place. [2023-11-23 21:35:38,091 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 153 selfloop transitions, 37 changer transitions 4/201 dead transitions. [2023-11-23 21:35:38,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 201 transitions, 1899 flow [2023-11-23 21:35:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2023-11-23 21:35:38,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2023-11-23 21:35:38,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 231 transitions. [2023-11-23 21:35:38,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 231 transitions. [2023-11-23 21:35:38,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:38,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 231 transitions. [2023-11-23 21:35:38,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 21.0) internal successors, (231), 11 states have internal predecessors, (231), 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) [2023-11-23 21:35:38,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:38,102 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:38,103 INFO L175 Difference]: Start difference. First operand has 131 places, 132 transitions, 1091 flow. Second operand 11 states and 231 transitions. [2023-11-23 21:35:38,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 201 transitions, 1899 flow [2023-11-23 21:35:38,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 201 transitions, 1773 flow, removed 46 selfloop flow, removed 5 redundant places. [2023-11-23 21:35:38,180 INFO L231 Difference]: Finished difference. Result has 139 places, 139 transitions, 1187 flow [2023-11-23 21:35:38,180 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} [2023-11-23 21:35:38,181 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2023-11-23 21:35:38,181 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 139 transitions, 1187 flow [2023-11-23 21:35:38,181 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) [2023-11-23 21:35:38,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:38,182 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] [2023-11-23 21:35:38,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:35:38,182 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)] === [2023-11-23 21:35:38,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:38,183 INFO L85 PathProgramCache]: Analyzing trace with hash 646716533, now seen corresponding path program 11 times [2023-11-23 21:35:38,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:38,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167613274] [2023-11-23 21:35:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:38,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:38,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:38,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:38,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167613274] [2023-11-23 21:35:38,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167613274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:38,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:38,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:38,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118827054] [2023-11-23 21:35:38,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:38,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:38,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:38,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:38,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:38,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:38,969 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) [2023-11-23 21:35:38,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:38,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:38,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:40,277 INFO L124 PetriNetUnfolderBase]: 2746/4907 cut-off events. [2023-11-23 21:35:40,277 INFO L125 PetriNetUnfolderBase]: For 35529/35633 co-relation queries the response was YES. [2023-11-23 21:35:40,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19020 conditions, 4907 events. 2746/4907 cut-off events. For 35529/35633 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32814 event pairs, 1113 based on Foata normal form. 23/4778 useless extension candidates. Maximal degree in co-relation 18971. Up to 3889 conditions per place. [2023-11-23 21:35:40,330 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 145 selfloop transitions, 36 changer transitions 5/193 dead transitions. [2023-11-23 21:35:40,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 193 transitions, 1847 flow [2023-11-23 21:35:40,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:40,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:40,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2023-11-23 21:35:40,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268774703557312 [2023-11-23 21:35:40,333 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 216 transitions. [2023-11-23 21:35:40,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 216 transitions. [2023-11-23 21:35:40,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:40,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 216 transitions. [2023-11-23 21:35:40,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.636363636363637) internal successors, (216), 11 states have internal predecessors, (216), 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) [2023-11-23 21:35:40,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:40,336 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:40,336 INFO L175 Difference]: Start difference. First operand has 139 places, 139 transitions, 1187 flow. Second operand 11 states and 216 transitions. [2023-11-23 21:35:40,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 193 transitions, 1847 flow [2023-11-23 21:35:40,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 193 transitions, 1715 flow, removed 47 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:40,431 INFO L231 Difference]: Finished difference. Result has 146 places, 145 transitions, 1222 flow [2023-11-23 21:35:40,431 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} [2023-11-23 21:35:40,432 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 101 predicate places. [2023-11-23 21:35:40,432 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 145 transitions, 1222 flow [2023-11-23 21:35:40,432 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) [2023-11-23 21:35:40,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:40,432 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] [2023-11-23 21:35:40,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:35:40,433 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)] === [2023-11-23 21:35:40,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash -994736065, now seen corresponding path program 12 times [2023-11-23 21:35:40,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:40,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237499478] [2023-11-23 21:35:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:40,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:41,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237499478] [2023-11-23 21:35:41,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237499478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:41,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:41,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:41,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076946441] [2023-11-23 21:35:41,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:41,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:41,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:41,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:41,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:41,322 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) [2023-11-23 21:35:41,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:41,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:41,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:42,469 INFO L124 PetriNetUnfolderBase]: 2936/5215 cut-off events. [2023-11-23 21:35:42,469 INFO L125 PetriNetUnfolderBase]: For 36767/36847 co-relation queries the response was YES. [2023-11-23 21:35:42,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20181 conditions, 5215 events. 2936/5215 cut-off events. For 36767/36847 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35366 event pairs, 1155 based on Foata normal form. 29/5096 useless extension candidates. Maximal degree in co-relation 20128. Up to 3919 conditions per place. [2023-11-23 21:35:42,535 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 158 selfloop transitions, 42 changer transitions 4/211 dead transitions. [2023-11-23 21:35:42,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 211 transitions, 2064 flow [2023-11-23 21:35:42,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:42,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-23 21:35:42,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525691699604743 [2023-11-23 21:35:42,538 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-23 21:35:42,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-23 21:35:42,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:42,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-23 21:35:42,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 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) [2023-11-23 21:35:42,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:42,541 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:42,541 INFO L175 Difference]: Start difference. First operand has 146 places, 145 transitions, 1222 flow. Second operand 11 states and 229 transitions. [2023-11-23 21:35:42,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 211 transitions, 2064 flow [2023-11-23 21:35:42,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 211 transitions, 1956 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:42,643 INFO L231 Difference]: Finished difference. Result has 153 places, 152 transitions, 1379 flow [2023-11-23 21:35:42,643 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} [2023-11-23 21:35:42,644 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2023-11-23 21:35:42,644 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 152 transitions, 1379 flow [2023-11-23 21:35:42,644 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) [2023-11-23 21:35:42,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:42,645 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] [2023-11-23 21:35:42,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:35:42,645 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)] === [2023-11-23 21:35:42,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:42,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1876532691, now seen corresponding path program 13 times [2023-11-23 21:35:42,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508250668] [2023-11-23 21:35:42,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:42,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508250668] [2023-11-23 21:35:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508250668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:43,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:43,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506414482] [2023-11-23 21:35:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:43,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:43,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:43,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:43,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:43,400 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) [2023-11-23 21:35:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:44,807 INFO L124 PetriNetUnfolderBase]: 2936/5219 cut-off events. [2023-11-23 21:35:44,807 INFO L125 PetriNetUnfolderBase]: For 43167/43231 co-relation queries the response was YES. [2023-11-23 21:35:44,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20910 conditions, 5219 events. 2936/5219 cut-off events. For 43167/43231 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 35239 event pairs, 1197 based on Foata normal form. 19/5084 useless extension candidates. Maximal degree in co-relation 20853. Up to 4132 conditions per place. [2023-11-23 21:35:44,876 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 161 selfloop transitions, 37 changer transitions 5/210 dead transitions. [2023-11-23 21:35:44,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 2100 flow [2023-11-23 21:35:44,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2023-11-23 21:35:44,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407114624505929 [2023-11-23 21:35:44,879 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 223 transitions. [2023-11-23 21:35:44,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 223 transitions. [2023-11-23 21:35:44,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:44,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 223 transitions. [2023-11-23 21:35:44,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.272727272727273) internal successors, (223), 11 states have internal predecessors, (223), 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) [2023-11-23 21:35:44,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:44,882 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:44,882 INFO L175 Difference]: Start difference. First operand has 153 places, 152 transitions, 1379 flow. Second operand 11 states and 223 transitions. [2023-11-23 21:35:44,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 2100 flow [2023-11-23 21:35:45,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 210 transitions, 1942 flow, removed 59 selfloop flow, removed 6 redundant places. [2023-11-23 21:35:45,041 INFO L231 Difference]: Finished difference. Result has 159 places, 156 transitions, 1348 flow [2023-11-23 21:35:45,041 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} [2023-11-23 21:35:45,042 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2023-11-23 21:35:45,042 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 156 transitions, 1348 flow [2023-11-23 21:35:45,042 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) [2023-11-23 21:35:45,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:45,042 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] [2023-11-23 21:35:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:35:45,043 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)] === [2023-11-23 21:35:45,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -935166021, now seen corresponding path program 14 times [2023-11-23 21:35:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436044250] [2023-11-23 21:35:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:45,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:45,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:45,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436044250] [2023-11-23 21:35:45,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436044250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:45,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:45,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:45,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921184995] [2023-11-23 21:35:45,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:45,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:45,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:45,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:45,811 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) [2023-11-23 21:35:45,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:45,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:45,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:47,055 INFO L124 PetriNetUnfolderBase]: 2936/5211 cut-off events. [2023-11-23 21:35:47,056 INFO L125 PetriNetUnfolderBase]: For 38404/38490 co-relation queries the response was YES. [2023-11-23 21:35:47,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20280 conditions, 5211 events. 2936/5211 cut-off events. For 38404/38490 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35270 event pairs, 1205 based on Foata normal form. 35/5100 useless extension candidates. Maximal degree in co-relation 20220. Up to 4128 conditions per place. [2023-11-23 21:35:47,122 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 159 selfloop transitions, 41 changer transitions 5/212 dead transitions. [2023-11-23 21:35:47,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 212 transitions, 2041 flow [2023-11-23 21:35:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:47,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2023-11-23 21:35:47,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43873517786561267 [2023-11-23 21:35:47,125 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 222 transitions. [2023-11-23 21:35:47,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 222 transitions. [2023-11-23 21:35:47,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:47,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 222 transitions. [2023-11-23 21:35:47,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.181818181818183) internal successors, (222), 11 states have internal predecessors, (222), 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) [2023-11-23 21:35:47,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:47,130 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:47,130 INFO L175 Difference]: Start difference. First operand has 159 places, 156 transitions, 1348 flow. Second operand 11 states and 222 transitions. [2023-11-23 21:35:47,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 212 transitions, 2041 flow [2023-11-23 21:35:47,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 212 transitions, 1935 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-23 21:35:47,267 INFO L231 Difference]: Finished difference. Result has 163 places, 160 transitions, 1388 flow [2023-11-23 21:35:47,267 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} [2023-11-23 21:35:47,268 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2023-11-23 21:35:47,269 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 160 transitions, 1388 flow [2023-11-23 21:35:47,269 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) [2023-11-23 21:35:47,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:47,269 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] [2023-11-23 21:35:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:35:47,270 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)] === [2023-11-23 21:35:47,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash 391042775, now seen corresponding path program 15 times [2023-11-23 21:35:47,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869621568] [2023-11-23 21:35:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:35:48,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:35:48,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:35:48,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869621568] [2023-11-23 21:35:48,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869621568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:35:48,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:35:48,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 21:35:48,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688912810] [2023-11-23 21:35:48,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:35:48,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:35:48,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:35:48,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:35:48,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:35:48,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 46 [2023-11-23 21:35:48,173 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) [2023-11-23 21:35:48,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 21:35:48,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 46 [2023-11-23 21:35:48,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 21:35:49,545 INFO L124 PetriNetUnfolderBase]: 2988/5302 cut-off events. [2023-11-23 21:35:49,545 INFO L125 PetriNetUnfolderBase]: For 38702/38788 co-relation queries the response was YES. [2023-11-23 21:35:49,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 5302 events. 2988/5302 cut-off events. For 38702/38788 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36098 event pairs, 1269 based on Foata normal form. 35/5181 useless extension candidates. Maximal degree in co-relation 20461. Up to 4280 conditions per place. [2023-11-23 21:35:49,611 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 165 selfloop transitions, 37 changer transitions 4/213 dead transitions. [2023-11-23 21:35:49,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 213 transitions, 2064 flow [2023-11-23 21:35:49,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:35:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-23 21:35:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2023-11-23 21:35:49,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4308300395256917 [2023-11-23 21:35:49,613 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 218 transitions. [2023-11-23 21:35:49,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 218 transitions. [2023-11-23 21:35:49,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 21:35:49,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 218 transitions. [2023-11-23 21:35:49,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 19.818181818181817) internal successors, (218), 11 states have internal predecessors, (218), 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) [2023-11-23 21:35:49,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:49,616 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 46.0) internal successors, (552), 12 states have internal predecessors, (552), 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) [2023-11-23 21:35:49,616 INFO L175 Difference]: Start difference. First operand has 163 places, 160 transitions, 1388 flow. Second operand 11 states and 218 transitions. [2023-11-23 21:35:49,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 213 transitions, 2064 flow [2023-11-23 21:35:49,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 213 transitions, 1940 flow, removed 23 selfloop flow, removed 8 redundant places. [2023-11-23 21:35:49,728 INFO L231 Difference]: Finished difference. Result has 167 places, 163 transitions, 1390 flow [2023-11-23 21:35:49,729 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} [2023-11-23 21:35:49,729 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 122 predicate places. [2023-11-23 21:35:49,730 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 163 transitions, 1390 flow [2023-11-23 21:35:49,730 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) [2023-11-23 21:35:49,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 21:35:49,730 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] [2023-11-23 21:35:49,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:35:49,731 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)] === [2023-11-23 21:35:49,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:35:49,731 INFO L85 PathProgramCache]: Analyzing trace with hash 503210621, now seen corresponding path program 16 times [2023-11-23 21:35:49,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:35:49,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410955829] [2023-11-23 21:35:49,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:35:49,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:35:49,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat