./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu --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 e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:32:53,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:32:53,345 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:32:53,351 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:32:53,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:32:53,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:32:53,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:32:53,400 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:32:53,401 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:32:53,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:32:53,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:32:53,403 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:32:53,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:32:53,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:32:53,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:32:53,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:32:53,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:32:53,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:32:53,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:32:53,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:32:53,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:32:53,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:32:53,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:32:53,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:32:53,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:32:53,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:32:53,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:32:53,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:32:53,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:53,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:32:53,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:32:53,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:32:53,414 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:32:53,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:32:53,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:32:53,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:32:53,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:32:53,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:32:53,416 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:32:53,417 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_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7f1528a4c77969c5bff279724a3ed43475460be047e2e4b141f1353c3ea9cfe [2023-11-19 07:32:53,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:32:53,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:32:53,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:32:53,756 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:32:53,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:32:53,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-19 07:32:56,757 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:32:57,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:32:57,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-19 07:32:57,053 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/data/5db57581e/f25a1b92c992419b8b4feffee9daf468/FLAGbf22180b3 [2023-11-19 07:32:57,077 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/data/5db57581e/f25a1b92c992419b8b4feffee9daf468 [2023-11-19 07:32:57,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:32:57,088 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:32:57,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:57,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:32:57,095 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:32:57,098 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,100 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5146e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57, skipping insertion in model container [2023-11-19 07:32:57,100 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:32:57,411 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_45f1a367-24ca-400d-a40c-783fd3398444/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2776,2789] [2023-11-19 07:32:57,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:57,444 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:32:57,490 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_45f1a367-24ca-400d-a40c-783fd3398444/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2776,2789] [2023-11-19 07:32:57,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:32:57,519 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:32:57,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57 WrapperNode [2023-11-19 07:32:57,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:32:57,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:57,522 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:32:57,522 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:32:57,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,603 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 212 [2023-11-19 07:32:57,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:32:57,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:32:57,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:32:57,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:32:57,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,661 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,668 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,690 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:32:57,691 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:32:57,691 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:32:57,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:32:57,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (1/1) ... [2023-11-19 07:32:57,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:32:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:32:57,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:32:57,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:32:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:32:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:32:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:32:57,783 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:32:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:32:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:32:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:32:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:32:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:32:57,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:32:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:32:57,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:32:57,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:32:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:32:57,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:32:57,790 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:32:57,941 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:32:57,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:32:58,467 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:32:58,481 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:32:58,482 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:32:58,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:58 BoogieIcfgContainer [2023-11-19 07:32:58,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:32:58,491 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:32:58,491 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:32:58,494 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:32:58,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:32:57" (1/3) ... [2023-11-19 07:32:58,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3ca50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:58, skipping insertion in model container [2023-11-19 07:32:58,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:32:57" (2/3) ... [2023-11-19 07:32:58,496 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c3ca50e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:32:58, skipping insertion in model container [2023-11-19 07:32:58,496 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:32:58" (3/3) ... [2023-11-19 07:32:58,498 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-19 07:32:58,507 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:32:58,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:32:58,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:32:58,520 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:32:58,620 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:32:58,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 294 places, 314 transitions, 649 flow [2023-11-19 07:32:58,855 INFO L124 PetriNetUnfolderBase]: 30/311 cut-off events. [2023-11-19 07:32:58,856 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:32:58,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 311 events. 30/311 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 258 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2023-11-19 07:32:58,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 294 places, 314 transitions, 649 flow [2023-11-19 07:32:58,884 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 300 transitions, 618 flow [2023-11-19 07:32:58,888 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:32:58,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 300 transitions, 618 flow [2023-11-19 07:32:58,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 300 transitions, 618 flow [2023-11-19 07:32:58,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 300 transitions, 618 flow [2023-11-19 07:32:59,019 INFO L124 PetriNetUnfolderBase]: 30/300 cut-off events. [2023-11-19 07:32:59,020 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:32:59,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 300 events. 30/300 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 256 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 208. Up to 3 conditions per place. [2023-11-19 07:32:59,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 2958 [2023-11-19 07:33:13,128 INFO L134 LiptonReduction]: Checked pairs total: 4268 [2023-11-19 07:33:13,129 INFO L136 LiptonReduction]: Total number of compositions: 353 [2023-11-19 07:33:13,159 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:33:13,168 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;@7dcdbb4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:33:13,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:33:13,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:33:13,181 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-11-19 07:33:13,181 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:33:13,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:13,182 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] [2023-11-19 07:33:13,183 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)] === [2023-11-19 07:33:13,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:13,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1355523418, now seen corresponding path program 1 times [2023-11-19 07:33:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:13,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261275737] [2023-11-19 07:33:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:13,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:14,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:14,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:14,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261275737] [2023-11-19 07:33:14,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261275737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:14,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:14,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757235661] [2023-11-19 07:33:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:14,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:14,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:14,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:14,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:33:14,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 667 [2023-11-19 07:33:14,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 82 flow. Second operand has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:14,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:14,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 667 [2023-11-19 07:33:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:15,237 INFO L124 PetriNetUnfolderBase]: 883/1230 cut-off events. [2023-11-19 07:33:15,238 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-11-19 07:33:15,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2565 conditions, 1230 events. 883/1230 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4802 event pairs, 208 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 1719. Up to 690 conditions per place. [2023-11-19 07:33:15,253 INFO L140 encePairwiseOnDemand]: 657/667 looper letters, 46 selfloop transitions, 7 changer transitions 18/74 dead transitions. [2023-11-19 07:33:15,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 74 transitions, 341 flow [2023-11-19 07:33:15,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:33:15,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:33:15,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-11-19 07:33:15,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4127936031984008 [2023-11-19 07:33:15,287 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-11-19 07:33:15,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-11-19 07:33:15,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:15,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-11-19 07:33:15,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,322 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 667.0) internal successors, (4669), 7 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,325 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 82 flow. Second operand 6 states and 1652 transitions. [2023-11-19 07:33:15,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 74 transitions, 341 flow [2023-11-19 07:33:15,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 74 transitions, 307 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-19 07:33:15,335 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 123 flow [2023-11-19 07:33:15,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=123, PETRI_PLACES=37, PETRI_TRANSITIONS=37} [2023-11-19 07:33:15,341 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-11-19 07:33:15,342 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 123 flow [2023-11-19 07:33:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:15,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:15,344 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] [2023-11-19 07:33:15,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:33:15,345 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)] === [2023-11-19 07:33:15,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:15,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1605041139, now seen corresponding path program 1 times [2023-11-19 07:33:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324613775] [2023-11-19 07:33:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:15,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324613775] [2023-11-19 07:33:15,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324613775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:15,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79664600] [2023-11-19 07:33:15,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:15,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:15,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:15,665 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:15,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:33:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:15,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:33:15,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:16,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:16,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:33:16,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 124 [2023-11-19 07:33:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:16,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79664600] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:16,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:16,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 11 [2023-11-19 07:33:16,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914520569] [2023-11-19 07:33:16,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:16,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:16,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:16,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:33:16,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 667 [2023-11-19 07:33:16,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 123 flow. Second operand has 6 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:16,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:16,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 667 [2023-11-19 07:33:16,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:17,323 INFO L124 PetriNetUnfolderBase]: 1498/2175 cut-off events. [2023-11-19 07:33:17,324 INFO L125 PetriNetUnfolderBase]: For 768/768 co-relation queries the response was YES. [2023-11-19 07:33:17,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5259 conditions, 2175 events. 1498/2175 cut-off events. For 768/768 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10112 event pairs, 216 based on Foata normal form. 2/1894 useless extension candidates. Maximal degree in co-relation 4143. Up to 646 conditions per place. [2023-11-19 07:33:17,345 INFO L140 encePairwiseOnDemand]: 659/667 looper letters, 99 selfloop transitions, 9 changer transitions 4/115 dead transitions. [2023-11-19 07:33:17,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 115 transitions, 587 flow [2023-11-19 07:33:17,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:33:17,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:33:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1922 transitions. [2023-11-19 07:33:17,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116513171985436 [2023-11-19 07:33:17,354 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1922 transitions. [2023-11-19 07:33:17,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1922 transitions. [2023-11-19 07:33:17,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:17,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1922 transitions. [2023-11-19 07:33:17,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.57142857142856) internal successors, (1922), 7 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:17,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 667.0) internal successors, (5336), 8 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:17,378 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 667.0) internal successors, (5336), 8 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:17,378 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 123 flow. Second operand 7 states and 1922 transitions. [2023-11-19 07:33:17,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 115 transitions, 587 flow [2023-11-19 07:33:17,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 115 transitions, 564 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:33:17,384 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 151 flow [2023-11-19 07:33:17,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=151, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-11-19 07:33:17,386 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-11-19 07:33:17,386 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 151 flow [2023-11-19 07:33:17,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 263.3333333333333) internal successors, (1580), 6 states have internal predecessors, (1580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:17,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:17,388 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] [2023-11-19 07:33:17,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:17,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:33:17,601 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)] === [2023-11-19 07:33:17,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:17,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1123950971, now seen corresponding path program 1 times [2023-11-19 07:33:17,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:17,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028835307] [2023-11-19 07:33:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:17,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:18,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:18,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028835307] [2023-11-19 07:33:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028835307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95982838] [2023-11-19 07:33:18,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:18,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:18,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:33:18,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:33:18,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:33:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:18,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:33:18,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:33:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:18,463 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:33:18,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:33:18,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 88 treesize of output 268 [2023-11-19 07:33:40,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:33:40,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 124 [2023-11-19 07:33:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:33:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95982838] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:33:40,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:33:40,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 10 [2023-11-19 07:33:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361881316] [2023-11-19 07:33:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:33:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:33:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:33:40,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 667 [2023-11-19 07:33:40,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 264.3333333333333) internal successors, (1586), 6 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:40,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:40,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 667 [2023-11-19 07:33:40,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:41,135 INFO L124 PetriNetUnfolderBase]: 1684/2426 cut-off events. [2023-11-19 07:33:41,135 INFO L125 PetriNetUnfolderBase]: For 1155/1161 co-relation queries the response was YES. [2023-11-19 07:33:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6317 conditions, 2426 events. 1684/2426 cut-off events. For 1155/1161 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 11603 event pairs, 486 based on Foata normal form. 59/2473 useless extension candidates. Maximal degree in co-relation 5610. Up to 1482 conditions per place. [2023-11-19 07:33:41,161 INFO L140 encePairwiseOnDemand]: 659/667 looper letters, 71 selfloop transitions, 7 changer transitions 4/85 dead transitions. [2023-11-19 07:33:41,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 85 transitions, 451 flow [2023-11-19 07:33:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:41,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1379 transitions. [2023-11-19 07:33:41,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41349325337331333 [2023-11-19 07:33:41,168 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1379 transitions. [2023-11-19 07:33:41,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1379 transitions. [2023-11-19 07:33:41,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:41,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1379 transitions. [2023-11-19 07:33:41,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.8) internal successors, (1379), 5 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:41,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:41,187 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:41,188 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 151 flow. Second operand 5 states and 1379 transitions. [2023-11-19 07:33:41,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 85 transitions, 451 flow [2023-11-19 07:33:41,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 85 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:33:41,198 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 166 flow [2023-11-19 07:33:41,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-19 07:33:41,201 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-11-19 07:33:41,201 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 166 flow [2023-11-19 07:33:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 264.3333333333333) internal successors, (1586), 6 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:41,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:41,203 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] [2023-11-19 07:33:41,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:33:41,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45f1a367-24ca-400d-a40c-783fd3398444/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:33:41,417 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)] === [2023-11-19 07:33:41,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1555209042, now seen corresponding path program 1 times [2023-11-19 07:33:41,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:41,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724547832] [2023-11-19 07:33:41,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:41,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:41,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:41,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724547832] [2023-11-19 07:33:41,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724547832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:41,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:41,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:33:41,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913616231] [2023-11-19 07:33:41,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:41,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:33:41,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:41,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:33:41,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:33:41,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 667 [2023-11-19 07:33:41,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:41,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:41,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 667 [2023-11-19 07:33:41,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:42,570 INFO L124 PetriNetUnfolderBase]: 2321/3533 cut-off events. [2023-11-19 07:33:42,570 INFO L125 PetriNetUnfolderBase]: For 2810/2810 co-relation queries the response was YES. [2023-11-19 07:33:42,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9349 conditions, 3533 events. 2321/3533 cut-off events. For 2810/2810 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19705 event pairs, 1626 based on Foata normal form. 164/3672 useless extension candidates. Maximal degree in co-relation 9286. Up to 2061 conditions per place. [2023-11-19 07:33:42,606 INFO L140 encePairwiseOnDemand]: 663/667 looper letters, 66 selfloop transitions, 3 changer transitions 3/75 dead transitions. [2023-11-19 07:33:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 75 transitions, 443 flow [2023-11-19 07:33:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:33:42,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:33:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1137 transitions. [2023-11-19 07:33:42,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261619190404798 [2023-11-19 07:33:42,618 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1137 transitions. [2023-11-19 07:33:42,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1137 transitions. [2023-11-19 07:33:42,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:42,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1137 transitions. [2023-11-19 07:33:42,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 284.25) internal successors, (1137), 4 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:42,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 667.0) internal successors, (3335), 5 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:42,641 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 667.0) internal successors, (3335), 5 states have internal predecessors, (3335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:42,642 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 166 flow. Second operand 4 states and 1137 transitions. [2023-11-19 07:33:42,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 75 transitions, 443 flow [2023-11-19 07:33:42,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 75 transitions, 428 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:33:42,649 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 187 flow [2023-11-19 07:33:42,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-19 07:33:42,652 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-19 07:33:42,652 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 187 flow [2023-11-19 07:33:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 275.25) internal successors, (1101), 4 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:42,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:42,654 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] [2023-11-19 07:33:42,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:33:42,655 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)] === [2023-11-19 07:33:42,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash -527788689, now seen corresponding path program 1 times [2023-11-19 07:33:42,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:42,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568727799] [2023-11-19 07:33:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:42,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:33:42,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:33:42,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:33:42,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568727799] [2023-11-19 07:33:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568727799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:33:42,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:33:42,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:33:42,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776582033] [2023-11-19 07:33:42,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:33:42,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:33:42,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:33:42,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:33:42,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:33:43,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 269 out of 667 [2023-11-19 07:33:43,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:43,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:33:43,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 269 of 667 [2023-11-19 07:33:43,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:33:43,856 INFO L124 PetriNetUnfolderBase]: 2595/3946 cut-off events. [2023-11-19 07:33:43,856 INFO L125 PetriNetUnfolderBase]: For 3383/3389 co-relation queries the response was YES. [2023-11-19 07:33:43,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10526 conditions, 3946 events. 2595/3946 cut-off events. For 3383/3389 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22274 event pairs, 803 based on Foata normal form. 100/4013 useless extension candidates. Maximal degree in co-relation 6582. Up to 1997 conditions per place. [2023-11-19 07:33:43,900 INFO L140 encePairwiseOnDemand]: 661/667 looper letters, 55 selfloop transitions, 6 changer transitions 17/81 dead transitions. [2023-11-19 07:33:43,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 81 transitions, 481 flow [2023-11-19 07:33:43,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:33:43,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:33:43,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1410 transitions. [2023-11-19 07:33:43,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42278860569715143 [2023-11-19 07:33:43,910 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1410 transitions. [2023-11-19 07:33:43,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1410 transitions. [2023-11-19 07:33:43,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:33:43,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1410 transitions. [2023-11-19 07:33:43,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 282.0) internal successors, (1410), 5 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:43,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:43,927 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 667.0) internal successors, (4002), 6 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:43,927 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 187 flow. Second operand 5 states and 1410 transitions. [2023-11-19 07:33:43,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 81 transitions, 481 flow [2023-11-19 07:33:43,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 477 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:33:43,935 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 209 flow [2023-11-19 07:33:43,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=667, PETRI_DIFFERENCE_MINUEND_FLOW=183, 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-19 07:33:43,939 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-11-19 07:33:43,939 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 209 flow [2023-11-19 07:33:43,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 273.2) internal successors, (1366), 5 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:33:43,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:33:43,941 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] [2023-11-19 07:33:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:33:43,942 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)] === [2023-11-19 07:33:43,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:33:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash 635641104, now seen corresponding path program 1 times [2023-11-19 07:33:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:33:43,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774253841] [2023-11-19 07:33:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:33:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:33:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat