./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:07,079 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:07,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:58:07,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:07,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:07,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:07,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:07,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:07,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:07,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:07,286 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:07,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:07,287 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:07,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:07,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:07,290 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:07,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:07,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:07,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:07,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:07,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:07,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:07,293 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:07,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:07,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:07,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:07,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:07,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:07,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:07,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:07,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:07,299 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:07,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:07,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:07,299 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:07,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:07,300 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:07,300 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:07,300 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:07,301 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_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2023-11-06 21:58:07,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:07,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:07,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:07,705 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:07,706 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:07,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-06 21:58:11,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:11,274 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:11,274 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-06 21:58:11,283 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/data/b66068b82/a997d4010bb04f588e26e4bd800c4952/FLAG45cf39758 [2023-11-06 21:58:11,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/data/b66068b82/a997d4010bb04f588e26e4bd800c4952 [2023-11-06 21:58:11,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:11,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:11,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:11,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:11,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:11,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3afe0506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11, skipping insertion in model container [2023-11-06 21:58:11,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:11,573 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_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-11-06 21:58:11,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:11,595 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:11,621 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_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-11-06 21:58:11,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:11,645 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:11,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11 WrapperNode [2023-11-06 21:58:11,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:11,647 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:11,647 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:11,647 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:11,656 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,681 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,708 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 108 [2023-11-06 21:58:11,709 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:11,710 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:11,710 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:11,710 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:11,723 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,744 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,745 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,769 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,773 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:11,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:11,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:11,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:11,784 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (1/1) ... [2023-11-06 21:58:11,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:11,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:11,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:11,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:58:11,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:58:11,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:58:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:58:11,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:58:11,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:58:11,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:58:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:58:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:58:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 21:58:11,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:58:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:11,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 21:58:11,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:58:11,858 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 21:58:11,981 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:11,983 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:12,437 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:12,449 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:12,450 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-06 21:58:12,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:12 BoogieIcfgContainer [2023-11-06 21:58:12,453 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:12,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:12,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:12,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:12,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:11" (1/3) ... [2023-11-06 21:58:12,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198ec523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:12, skipping insertion in model container [2023-11-06 21:58:12,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:11" (2/3) ... [2023-11-06 21:58:12,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198ec523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:12, skipping insertion in model container [2023-11-06 21:58:12,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:12" (3/3) ... [2023-11-06 21:58:12,464 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-06 21:58:12,474 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 21:58:12,487 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:12,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:58:12,488 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:58:12,612 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:58:12,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 187 transitions, 395 flow [2023-11-06 21:58:12,768 INFO L124 PetriNetUnfolderBase]: 15/184 cut-off events. [2023-11-06 21:58:12,768 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:12,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 15/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 219 event pairs, 0 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-11-06 21:58:12,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 187 transitions, 395 flow [2023-11-06 21:58:12,783 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 173 transitions, 364 flow [2023-11-06 21:58:12,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:58:12,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 173 transitions, 364 flow [2023-11-06 21:58:12,804 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 173 transitions, 364 flow [2023-11-06 21:58:12,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 173 transitions, 364 flow [2023-11-06 21:58:12,868 INFO L124 PetriNetUnfolderBase]: 15/173 cut-off events. [2023-11-06 21:58:12,868 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:12,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 15/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 217 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2023-11-06 21:58:12,876 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-11-06 21:58:22,301 INFO L134 LiptonReduction]: Checked pairs total: 4366 [2023-11-06 21:58:22,301 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-11-06 21:58:22,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:22,332 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=LoopsAndPotentialCycles, 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;@3a3177c0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:22,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 21:58:22,342 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:58:22,342 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-11-06 21:58:22,342 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:58:22,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:22,344 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] [2023-11-06 21:58:22,344 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)] === [2023-11-06 21:58:22,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1098505864, now seen corresponding path program 1 times [2023-11-06 21:58:22,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:22,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863951806] [2023-11-06 21:58:22,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863951806] [2023-11-06 21:58:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863951806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:23,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:23,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133766225] [2023-11-06 21:58:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:23,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:23,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:23,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:23,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:23,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 367 [2023-11-06 21:58:23,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:23,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:23,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 367 [2023-11-06 21:58:23,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:23,443 INFO L124 PetriNetUnfolderBase]: 522/693 cut-off events. [2023-11-06 21:58:23,444 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-11-06 21:58:23,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 693 events. 522/693 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2167 event pairs, 206 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 1168. Up to 673 conditions per place. [2023-11-06 21:58:23,456 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 24 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-06 21:58:23,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 29 transitions, 128 flow [2023-11-06 21:58:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:23,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:23,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-11-06 21:58:23,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47411444141689374 [2023-11-06 21:58:23,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-11-06 21:58:23,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-11-06 21:58:23,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:23,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-11-06 21:58:23,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:23,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:23,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:23,509 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 522 transitions. [2023-11-06 21:58:23,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 29 transitions, 128 flow [2023-11-06 21:58:23,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 29 transitions, 116 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:58:23,520 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-11-06 21:58:23,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-06 21:58:23,527 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-06 21:58:23,527 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-11-06 21:58:23,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:23,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:23,529 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] [2023-11-06 21:58:23,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 21:58:23,530 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)] === [2023-11-06 21:58:23,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:23,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1464122290, now seen corresponding path program 1 times [2023-11-06 21:58:23,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537476194] [2023-11-06 21:58:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:23,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:23,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:23,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537476194] [2023-11-06 21:58:23,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537476194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:23,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:23,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239801108] [2023-11-06 21:58:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:23,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:23,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:23,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:23,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:24,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 367 [2023-11-06 21:58:24,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:24,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:24,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 367 [2023-11-06 21:58:24,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:24,276 INFO L124 PetriNetUnfolderBase]: 753/1008 cut-off events. [2023-11-06 21:58:24,276 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 21:58:24,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2043 conditions, 1008 events. 753/1008 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3524 event pairs, 95 based on Foata normal form. 1/588 useless extension candidates. Maximal degree in co-relation 2032. Up to 825 conditions per place. [2023-11-06 21:58:24,288 INFO L140 encePairwiseOnDemand]: 360/367 looper letters, 39 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-11-06 21:58:24,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 203 flow [2023-11-06 21:58:24,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:24,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:24,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-11-06 21:58:24,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940962761126249 [2023-11-06 21:58:24,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-11-06 21:58:24,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-11-06 21:58:24,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:24,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-11-06 21:58:24,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:24,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:24,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:24,306 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 3 states and 544 transitions. [2023-11-06 21:58:24,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 203 flow [2023-11-06 21:58:24,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:24,309 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 100 flow [2023-11-06 21:58:24,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-11-06 21:58:24,310 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-11-06 21:58:24,310 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 100 flow [2023-11-06 21:58:24,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:24,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:24,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:24,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 21:58:24,313 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)] === [2023-11-06 21:58:24,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:24,314 INFO L85 PathProgramCache]: Analyzing trace with hash 34805529, now seen corresponding path program 1 times [2023-11-06 21:58:24,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:24,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231418877] [2023-11-06 21:58:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:24,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:24,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:24,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231418877] [2023-11-06 21:58:24,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231418877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:24,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995777747] [2023-11-06 21:58:24,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:24,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:24,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:24,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:24,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:58:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:24,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:58:24,844 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:25,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:25,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995777747] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:25,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:25,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 21:58:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307655944] [2023-11-06 21:58:25,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:25,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:58:25,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:25,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:58:25,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:25,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 367 [2023-11-06 21:58:25,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 100 flow. Second operand has 12 states, 12 states have (on average 158.33333333333334) internal successors, (1900), 12 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:25,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:25,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 367 [2023-11-06 21:58:25,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:26,123 INFO L124 PetriNetUnfolderBase]: 1451/1990 cut-off events. [2023-11-06 21:58:26,123 INFO L125 PetriNetUnfolderBase]: For 448/448 co-relation queries the response was YES. [2023-11-06 21:58:26,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 1990 events. 1451/1990 cut-off events. For 448/448 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8522 event pairs, 642 based on Foata normal form. 66/1683 useless extension candidates. Maximal degree in co-relation 2520. Up to 1040 conditions per place. [2023-11-06 21:58:26,145 INFO L140 encePairwiseOnDemand]: 361/367 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-11-06 21:58:26,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 73 transitions, 369 flow [2023-11-06 21:58:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 995 transitions. [2023-11-06 21:58:26,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4518619436875568 [2023-11-06 21:58:26,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 995 transitions. [2023-11-06 21:58:26,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 995 transitions. [2023-11-06 21:58:26,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:26,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 995 transitions. [2023-11-06 21:58:26,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.83333333333334) internal successors, (995), 6 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:26,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:26,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:26,166 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 100 flow. Second operand 6 states and 995 transitions. [2023-11-06 21:58:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 73 transitions, 369 flow [2023-11-06 21:58:26,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 73 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:58:26,170 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 142 flow [2023-11-06 21:58:26,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-06 21:58:26,172 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-11-06 21:58:26,172 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 142 flow [2023-11-06 21:58:26,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.33333333333334) internal successors, (1900), 12 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:26,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:26,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:26,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:26,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:26,382 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)] === [2023-11-06 21:58:26,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:26,383 INFO L85 PathProgramCache]: Analyzing trace with hash 265292729, now seen corresponding path program 2 times [2023-11-06 21:58:26,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:26,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484721674] [2023-11-06 21:58:26,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:26,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:26,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:26,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484721674] [2023-11-06 21:58:26,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484721674] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:26,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109159755] [2023-11-06 21:58:26,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:58:26,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:26,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:26,592 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:26,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:58:26,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:26,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:26,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:58:26,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:26,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:26,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:26,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109159755] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:26,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:26,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-06 21:58:26,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805990703] [2023-11-06 21:58:26,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:26,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:58:26,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:26,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:58:26,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:27,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2023-11-06 21:58:27,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:27,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:27,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2023-11-06 21:58:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:27,519 INFO L124 PetriNetUnfolderBase]: 1244/1735 cut-off events. [2023-11-06 21:58:27,519 INFO L125 PetriNetUnfolderBase]: For 843/942 co-relation queries the response was YES. [2023-11-06 21:58:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4487 conditions, 1735 events. 1244/1735 cut-off events. For 843/942 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7202 event pairs, 376 based on Foata normal form. 96/1554 useless extension candidates. Maximal degree in co-relation 2660. Up to 596 conditions per place. [2023-11-06 21:58:27,537 INFO L140 encePairwiseOnDemand]: 359/367 looper letters, 70 selfloop transitions, 12 changer transitions 0/85 dead transitions. [2023-11-06 21:58:27,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 85 transitions, 456 flow [2023-11-06 21:58:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 21:58:27,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1174 transitions. [2023-11-06 21:58:27,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45698715453483846 [2023-11-06 21:58:27,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1174 transitions. [2023-11-06 21:58:27,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1174 transitions. [2023-11-06 21:58:27,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:27,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1174 transitions. [2023-11-06 21:58:27,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.71428571428572) internal successors, (1174), 7 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:27,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:27,568 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:27,568 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 142 flow. Second operand 7 states and 1174 transitions. [2023-11-06 21:58:27,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 85 transitions, 456 flow [2023-11-06 21:58:27,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 85 transitions, 446 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 21:58:27,582 INFO L231 Difference]: Finished difference. Result has 44 places, 42 transitions, 193 flow [2023-11-06 21:58:27,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=44, PETRI_TRANSITIONS=42} [2023-11-06 21:58:27,591 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 12 predicate places. [2023-11-06 21:58:27,593 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 42 transitions, 193 flow [2023-11-06 21:58:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:27,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:27,594 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] [2023-11-06 21:58:27,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-06 21:58:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:27,801 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)] === [2023-11-06 21:58:27,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:27,802 INFO L85 PathProgramCache]: Analyzing trace with hash 159372110, now seen corresponding path program 1 times [2023-11-06 21:58:27,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:27,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283312714] [2023-11-06 21:58:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:27,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:28,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:28,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283312714] [2023-11-06 21:58:28,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283312714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:28,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13567455] [2023-11-06 21:58:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:28,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:28,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:28,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:58:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:28,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:58:28,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:28,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13567455] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:28,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:28,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 21:58:28,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747448294] [2023-11-06 21:58:28,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:58:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:58:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:58:28,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 367 [2023-11-06 21:58:28,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 193 flow. Second operand has 12 states, 12 states have (on average 159.91666666666666) internal successors, (1919), 12 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:28,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:28,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 367 [2023-11-06 21:58:28,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:29,018 INFO L124 PetriNetUnfolderBase]: 1014/1439 cut-off events. [2023-11-06 21:58:29,018 INFO L125 PetriNetUnfolderBase]: For 1513/1604 co-relation queries the response was YES. [2023-11-06 21:58:29,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4234 conditions, 1439 events. 1014/1439 cut-off events. For 1513/1604 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5877 event pairs, 410 based on Foata normal form. 138/1391 useless extension candidates. Maximal degree in co-relation 3111. Up to 1017 conditions per place. [2023-11-06 21:58:29,037 INFO L140 encePairwiseOnDemand]: 360/367 looper letters, 59 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-11-06 21:58:29,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 393 flow [2023-11-06 21:58:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:29,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1002 transitions. [2023-11-06 21:58:29,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4550408719346049 [2023-11-06 21:58:29,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1002 transitions. [2023-11-06 21:58:29,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1002 transitions. [2023-11-06 21:58:29,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:29,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1002 transitions. [2023-11-06 21:58:29,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 167.0) internal successors, (1002), 6 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:29,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:29,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:29,059 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 193 flow. Second operand 6 states and 1002 transitions. [2023-11-06 21:58:29,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 393 flow [2023-11-06 21:58:29,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 68 transitions, 386 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:29,076 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 192 flow [2023-11-06 21:58:29,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-06 21:58:29,080 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2023-11-06 21:58:29,081 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 192 flow [2023-11-06 21:58:29,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.91666666666666) internal successors, (1919), 12 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:29,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:29,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:29,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:29,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:29,290 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)] === [2023-11-06 21:58:29,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1813260078, now seen corresponding path program 1 times [2023-11-06 21:58:29,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:29,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697383524] [2023-11-06 21:58:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:29,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:29,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697383524] [2023-11-06 21:58:29,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697383524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:29,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202386069] [2023-11-06 21:58:29,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:29,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:29,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:29,541 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:29,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:58:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:29,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 21:58:29,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:29,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:29,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:29,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202386069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:29,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-06 21:58:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793055614] [2023-11-06 21:58:29,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:29,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 21:58:29,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:29,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 21:58:29,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-06 21:58:30,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 367 [2023-11-06 21:58:30,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 192 flow. Second operand has 13 states, 13 states have (on average 157.76923076923077) internal successors, (2051), 13 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:30,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:30,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 367 [2023-11-06 21:58:30,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:30,629 INFO L124 PetriNetUnfolderBase]: 649/939 cut-off events. [2023-11-06 21:58:30,630 INFO L125 PetriNetUnfolderBase]: For 1387/1569 co-relation queries the response was YES. [2023-11-06 21:58:30,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2945 conditions, 939 events. 649/939 cut-off events. For 1387/1569 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3549 event pairs, 316 based on Foata normal form. 179/1027 useless extension candidates. Maximal degree in co-relation 2556. Up to 801 conditions per place. [2023-11-06 21:58:30,641 INFO L140 encePairwiseOnDemand]: 361/367 looper letters, 30 selfloop transitions, 3 changer transitions 25/60 dead transitions. [2023-11-06 21:58:30,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 60 transitions, 361 flow [2023-11-06 21:58:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:30,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:58:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 982 transitions. [2023-11-06 21:58:30,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44595821980018163 [2023-11-06 21:58:30,650 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 982 transitions. [2023-11-06 21:58:30,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 982 transitions. [2023-11-06 21:58:30,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:30,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 982 transitions. [2023-11-06 21:58:30,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 163.66666666666666) internal successors, (982), 6 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:30,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:30,664 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 367.0) internal successors, (2569), 7 states have internal predecessors, (2569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:30,664 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 192 flow. Second operand 6 states and 982 transitions. [2023-11-06 21:58:30,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 60 transitions, 361 flow [2023-11-06 21:58:30,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 342 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:30,671 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 156 flow [2023-11-06 21:58:30,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-06 21:58:30,675 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-11-06 21:58:30,675 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 156 flow [2023-11-06 21:58:30,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 157.76923076923077) internal successors, (2051), 13 states have internal predecessors, (2051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:30,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:30,677 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:30,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 21:58:30,884 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)] === [2023-11-06 21:58:30,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1149498100, now seen corresponding path program 2 times [2023-11-06 21:58:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654561225] [2023-11-06 21:58:30,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:30,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:31,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654561225] [2023-11-06 21:58:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654561225] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508489049] [2023-11-06 21:58:31,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:58:31,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:31,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:31,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:31,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:58:31,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:31,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:31,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:31,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:31,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508489049] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:31,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:31,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2023-11-06 21:58:31,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492754437] [2023-11-06 21:58:31,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:31,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:31,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:31,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:31,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:58:31,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 367 [2023-11-06 21:58:31,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 156 flow. Second operand has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:31,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:31,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 367 [2023-11-06 21:58:31,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:32,268 INFO L124 PetriNetUnfolderBase]: 947/1306 cut-off events. [2023-11-06 21:58:32,268 INFO L125 PetriNetUnfolderBase]: For 1888/2076 co-relation queries the response was YES. [2023-11-06 21:58:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4285 conditions, 1306 events. 947/1306 cut-off events. For 1888/2076 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4885 event pairs, 242 based on Foata normal form. 202/1419 useless extension candidates. Maximal degree in co-relation 4261. Up to 717 conditions per place. [2023-11-06 21:58:32,285 INFO L140 encePairwiseOnDemand]: 358/367 looper letters, 76 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2023-11-06 21:58:32,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 88 transitions, 571 flow [2023-11-06 21:58:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:58:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 21:58:32,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1272 transitions. [2023-11-06 21:58:32,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332425068119891 [2023-11-06 21:58:32,293 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1272 transitions. [2023-11-06 21:58:32,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1272 transitions. [2023-11-06 21:58:32,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:32,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1272 transitions. [2023-11-06 21:58:32,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:32,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 367.0) internal successors, (3303), 9 states have internal predecessors, (3303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:32,310 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 367.0) internal successors, (3303), 9 states have internal predecessors, (3303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:32,310 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 156 flow. Second operand 8 states and 1272 transitions. [2023-11-06 21:58:32,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 88 transitions, 571 flow [2023-11-06 21:58:32,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 88 transitions, 507 flow, removed 29 selfloop flow, removed 8 redundant places. [2023-11-06 21:58:32,323 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 198 flow [2023-11-06 21:58:32,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=198, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-11-06 21:58:32,326 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2023-11-06 21:58:32,328 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 198 flow [2023-11-06 21:58:32,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:32,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:32,332 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:32,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:32,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 21:58:32,551 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)] === [2023-11-06 21:58:32,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:32,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1303871184, now seen corresponding path program 3 times [2023-11-06 21:58:32,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:32,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767220201] [2023-11-06 21:58:32,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:32,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:32,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:32,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767220201] [2023-11-06 21:58:32,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767220201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:32,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448415676] [2023-11-06 21:58:32,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 21:58:32,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:32,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:32,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 21:58:33,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 21:58:33,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:33,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:33,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:33,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:33,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448415676] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:33,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:33,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 15 [2023-11-06 21:58:33,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977630009] [2023-11-06 21:58:33,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:33,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:33,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:58:33,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 367 [2023-11-06 21:58:33,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:33,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:33,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 367 [2023-11-06 21:58:33,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:34,291 INFO L124 PetriNetUnfolderBase]: 1354/1861 cut-off events. [2023-11-06 21:58:34,292 INFO L125 PetriNetUnfolderBase]: For 2434/2662 co-relation queries the response was YES. [2023-11-06 21:58:34,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6237 conditions, 1861 events. 1354/1861 cut-off events. For 2434/2662 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7073 event pairs, 292 based on Foata normal form. 240/2100 useless extension candidates. Maximal degree in co-relation 6206. Up to 877 conditions per place. [2023-11-06 21:58:34,314 INFO L140 encePairwiseOnDemand]: 357/367 looper letters, 98 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2023-11-06 21:58:34,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 127 transitions, 854 flow [2023-11-06 21:58:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:58:34,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:58:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1592 transitions. [2023-11-06 21:58:34,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337874659400545 [2023-11-06 21:58:34,325 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1592 transitions. [2023-11-06 21:58:34,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1592 transitions. [2023-11-06 21:58:34,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:34,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1592 transitions. [2023-11-06 21:58:34,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 159.2) internal successors, (1592), 10 states have internal predecessors, (1592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:34,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:34,343 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:34,343 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 198 flow. Second operand 10 states and 1592 transitions. [2023-11-06 21:58:34,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 127 transitions, 854 flow [2023-11-06 21:58:34,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 127 transitions, 831 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:34,353 INFO L231 Difference]: Finished difference. Result has 54 places, 58 transitions, 371 flow [2023-11-06 21:58:34,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=54, PETRI_TRANSITIONS=58} [2023-11-06 21:58:34,356 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2023-11-06 21:58:34,357 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 58 transitions, 371 flow [2023-11-06 21:58:34,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:34,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:34,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:34,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:34,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-06 21:58:34,566 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)] === [2023-11-06 21:58:34,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:34,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2103115904, now seen corresponding path program 4 times [2023-11-06 21:58:34,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:34,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28911866] [2023-11-06 21:58:34,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:34,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28911866] [2023-11-06 21:58:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28911866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895945602] [2023-11-06 21:58:34,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 21:58:34,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:34,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:34,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 21:58:34,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 21:58:34,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:34,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:34,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:35,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:35,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895945602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:35,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:35,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-06 21:58:35,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497445456] [2023-11-06 21:58:35,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:35,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 21:58:35,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:35,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 21:58:35,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-11-06 21:58:35,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 367 [2023-11-06 21:58:35,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 58 transitions, 371 flow. Second operand has 17 states, 17 states have (on average 152.94117647058823) internal successors, (2600), 17 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:35,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:35,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 367 [2023-11-06 21:58:35,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:37,124 INFO L124 PetriNetUnfolderBase]: 1754/2409 cut-off events. [2023-11-06 21:58:37,124 INFO L125 PetriNetUnfolderBase]: For 5695/5989 co-relation queries the response was YES. [2023-11-06 21:58:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9737 conditions, 2409 events. 1754/2409 cut-off events. For 5695/5989 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9639 event pairs, 424 based on Foata normal form. 308/2716 useless extension candidates. Maximal degree in co-relation 9702. Up to 1431 conditions per place. [2023-11-06 21:58:37,164 INFO L140 encePairwiseOnDemand]: 355/367 looper letters, 114 selfloop transitions, 52 changer transitions 0/167 dead transitions. [2023-11-06 21:58:37,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 167 transitions, 1323 flow [2023-11-06 21:58:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 21:58:37,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 21:58:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1909 transitions. [2023-11-06 21:58:37,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43346957311534967 [2023-11-06 21:58:37,174 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1909 transitions. [2023-11-06 21:58:37,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1909 transitions. [2023-11-06 21:58:37,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:37,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1909 transitions. [2023-11-06 21:58:37,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.08333333333334) internal successors, (1909), 12 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:37,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:37,194 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 367.0) internal successors, (4771), 13 states have internal predecessors, (4771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:37,194 INFO L175 Difference]: Start difference. First operand has 54 places, 58 transitions, 371 flow. Second operand 12 states and 1909 transitions. [2023-11-06 21:58:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 167 transitions, 1323 flow [2023-11-06 21:58:37,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 167 transitions, 1262 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-06 21:58:37,227 INFO L231 Difference]: Finished difference. Result has 67 places, 92 transitions, 792 flow [2023-11-06 21:58:37,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=792, PETRI_PLACES=67, PETRI_TRANSITIONS=92} [2023-11-06 21:58:37,228 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 35 predicate places. [2023-11-06 21:58:37,228 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 92 transitions, 792 flow [2023-11-06 21:58:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 152.94117647058823) internal successors, (2600), 17 states have internal predecessors, (2600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:37,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:37,249 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:37,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:37,450 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)] === [2023-11-06 21:58:37,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1799027454, now seen corresponding path program 5 times [2023-11-06 21:58:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:37,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414523543] [2023-11-06 21:58:37,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:37,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414523543] [2023-11-06 21:58:37,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414523543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:37,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034122660] [2023-11-06 21:58:37,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 21:58:37,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:37,668 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:37,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 21:58:37,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:37,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:37,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:58:37,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:58:37,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:38,025 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:58:38,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034122660] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:38,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:38,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-06 21:58:38,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463263352] [2023-11-06 21:58:38,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:38,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 21:58:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:38,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 21:58:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 21:58:38,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 367 [2023-11-06 21:58:38,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 92 transitions, 792 flow. Second operand has 14 states, 14 states have (on average 147.64285714285714) internal successors, (2067), 14 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:38,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:38,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 367 [2023-11-06 21:58:38,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:40,233 INFO L124 PetriNetUnfolderBase]: 2102/2900 cut-off events. [2023-11-06 21:58:40,233 INFO L125 PetriNetUnfolderBase]: For 10570/10570 co-relation queries the response was YES. [2023-11-06 21:58:40,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13590 conditions, 2900 events. 2102/2900 cut-off events. For 10570/10570 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11649 event pairs, 141 based on Foata normal form. 16/2916 useless extension candidates. Maximal degree in co-relation 13548. Up to 1091 conditions per place. [2023-11-06 21:58:40,350 INFO L140 encePairwiseOnDemand]: 353/367 looper letters, 171 selfloop transitions, 148 changer transitions 0/319 dead transitions. [2023-11-06 21:58:40,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 319 transitions, 3036 flow [2023-11-06 21:58:40,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 21:58:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-06 21:58:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3528 transitions. [2023-11-06 21:58:40,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41795995735102476 [2023-11-06 21:58:40,367 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3528 transitions. [2023-11-06 21:58:40,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3528 transitions. [2023-11-06 21:58:40,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:40,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3528 transitions. [2023-11-06 21:58:40,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 153.3913043478261) internal successors, (3528), 23 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:40,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 367.0) internal successors, (8808), 24 states have internal predecessors, (8808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:40,403 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 367.0) internal successors, (8808), 24 states have internal predecessors, (8808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:40,403 INFO L175 Difference]: Start difference. First operand has 67 places, 92 transitions, 792 flow. Second operand 23 states and 3528 transitions. [2023-11-06 21:58:40,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 319 transitions, 3036 flow [2023-11-06 21:58:40,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 319 transitions, 2911 flow, removed 32 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:40,492 INFO L231 Difference]: Finished difference. Result has 91 places, 192 transitions, 2073 flow [2023-11-06 21:58:40,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2073, PETRI_PLACES=91, PETRI_TRANSITIONS=192} [2023-11-06 21:58:40,495 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 59 predicate places. [2023-11-06 21:58:40,495 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 192 transitions, 2073 flow [2023-11-06 21:58:40,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 147.64285714285714) internal successors, (2067), 14 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:40,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:40,496 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:40,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-06 21:58:40,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 21:58:40,703 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)] === [2023-11-06 21:58:40,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1101843706, now seen corresponding path program 6 times [2023-11-06 21:58:40,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087308551] [2023-11-06 21:58:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:40,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:40,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:40,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087308551] [2023-11-06 21:58:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087308551] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:40,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217314197] [2023-11-06 21:58:40,961 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 21:58:40,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:40,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:40,963 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:40,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 21:58:41,129 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-06 21:58:41,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:41,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:41,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:41,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:41,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217314197] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:41,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:41,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2023-11-06 21:58:41,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515295928] [2023-11-06 21:58:41,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:41,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:41,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:58:41,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 367 [2023-11-06 21:58:41,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 192 transitions, 2073 flow. Second operand has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:41,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:41,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 367 [2023-11-06 21:58:41,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:42,577 INFO L124 PetriNetUnfolderBase]: 2036/2802 cut-off events. [2023-11-06 21:58:42,577 INFO L125 PetriNetUnfolderBase]: For 11293/11341 co-relation queries the response was YES. [2023-11-06 21:58:42,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14425 conditions, 2802 events. 2036/2802 cut-off events. For 11293/11341 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11086 event pairs, 354 based on Foata normal form. 62/2863 useless extension candidates. Maximal degree in co-relation 14375. Up to 1427 conditions per place. [2023-11-06 21:58:42,621 INFO L140 encePairwiseOnDemand]: 357/367 looper letters, 169 selfloop transitions, 81 changer transitions 0/259 dead transitions. [2023-11-06 21:58:42,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 259 transitions, 2927 flow [2023-11-06 21:58:42,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 21:58:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 21:58:42,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1594 transitions. [2023-11-06 21:58:42,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43433242506811987 [2023-11-06 21:58:42,629 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1594 transitions. [2023-11-06 21:58:42,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1594 transitions. [2023-11-06 21:58:42,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:42,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1594 transitions. [2023-11-06 21:58:42,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 159.4) internal successors, (1594), 10 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:42,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:42,644 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 367.0) internal successors, (4037), 11 states have internal predecessors, (4037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:42,644 INFO L175 Difference]: Start difference. First operand has 91 places, 192 transitions, 2073 flow. Second operand 10 states and 1594 transitions. [2023-11-06 21:58:42,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 259 transitions, 2927 flow [2023-11-06 21:58:42,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 259 transitions, 2836 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:42,776 INFO L231 Difference]: Finished difference. Result has 95 places, 191 transitions, 2134 flow [2023-11-06 21:58:42,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=95, PETRI_TRANSITIONS=191} [2023-11-06 21:58:42,778 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2023-11-06 21:58:42,778 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 191 transitions, 2134 flow [2023-11-06 21:58:42,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:42,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:42,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:42,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:42,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:42,986 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)] === [2023-11-06 21:58:42,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:42,987 INFO L85 PathProgramCache]: Analyzing trace with hash -88414146, now seen corresponding path program 7 times [2023-11-06 21:58:42,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:42,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369963462] [2023-11-06 21:58:42,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:42,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:43,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:43,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369963462] [2023-11-06 21:58:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369963462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:43,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097626651] [2023-11-06 21:58:43,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-06 21:58:43,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:43,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:43,187 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:43,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 21:58:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:43,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:58:43,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:43,485 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:43,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:43,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097626651] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:43,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:43,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 17 [2023-11-06 21:58:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420041064] [2023-11-06 21:58:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:43,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 21:58:43,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:43,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 21:58:43,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-06 21:58:43,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 367 [2023-11-06 21:58:43,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 191 transitions, 2134 flow. Second operand has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:43,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:43,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 367 [2023-11-06 21:58:43,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:44,686 INFO L124 PetriNetUnfolderBase]: 2013/2760 cut-off events. [2023-11-06 21:58:44,686 INFO L125 PetriNetUnfolderBase]: For 12269/12324 co-relation queries the response was YES. [2023-11-06 21:58:44,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14682 conditions, 2760 events. 2013/2760 cut-off events. For 12269/12324 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 10813 event pairs, 270 based on Foata normal form. 69/2828 useless extension candidates. Maximal degree in co-relation 14632. Up to 1071 conditions per place. [2023-11-06 21:58:44,731 INFO L140 encePairwiseOnDemand]: 357/367 looper letters, 116 selfloop transitions, 114 changer transitions 0/238 dead transitions. [2023-11-06 21:58:44,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 238 transitions, 2795 flow [2023-11-06 21:58:44,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 21:58:44,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 21:58:44,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1435 transitions. [2023-11-06 21:58:44,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43445352709657886 [2023-11-06 21:58:44,743 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1435 transitions. [2023-11-06 21:58:44,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1435 transitions. [2023-11-06 21:58:44,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:44,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1435 transitions. [2023-11-06 21:58:44,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.44444444444446) internal successors, (1435), 9 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:44,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:44,764 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 367.0) internal successors, (3670), 10 states have internal predecessors, (3670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:44,764 INFO L175 Difference]: Start difference. First operand has 95 places, 191 transitions, 2134 flow. Second operand 9 states and 1435 transitions. [2023-11-06 21:58:44,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 238 transitions, 2795 flow [2023-11-06 21:58:44,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 238 transitions, 2757 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-06 21:58:44,883 INFO L231 Difference]: Finished difference. Result has 97 places, 187 transitions, 2281 flow [2023-11-06 21:58:44,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2281, PETRI_PLACES=97, PETRI_TRANSITIONS=187} [2023-11-06 21:58:44,884 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2023-11-06 21:58:44,885 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 187 transitions, 2281 flow [2023-11-06 21:58:44,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 152.875) internal successors, (1223), 8 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:44,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:44,886 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:44,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:45,092 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)] === [2023-11-06 21:58:45,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2102441330, now seen corresponding path program 1 times [2023-11-06 21:58:45,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:45,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64500867] [2023-11-06 21:58:45,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:45,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:45,190 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:58:45,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:45,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64500867] [2023-11-06 21:58:45,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64500867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:45,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:45,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:58:45,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333909386] [2023-11-06 21:58:45,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:45,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:58:45,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:58:45,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:58:45,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2023-11-06 21:58:45,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 187 transitions, 2281 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:45,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2023-11-06 21:58:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:58:45,784 INFO L124 PetriNetUnfolderBase]: 1887/2614 cut-off events. [2023-11-06 21:58:45,785 INFO L125 PetriNetUnfolderBase]: For 18464/19043 co-relation queries the response was YES. [2023-11-06 21:58:45,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15139 conditions, 2614 events. 1887/2614 cut-off events. For 18464/19043 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 11332 event pairs, 420 based on Foata normal form. 380/2917 useless extension candidates. Maximal degree in co-relation 15088. Up to 1637 conditions per place. [2023-11-06 21:58:45,830 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 230 selfloop transitions, 3 changer transitions 0/260 dead transitions. [2023-11-06 21:58:45,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 260 transitions, 3641 flow [2023-11-06 21:58:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:58:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:58:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-11-06 21:58:45,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49591280653950953 [2023-11-06 21:58:45,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-11-06 21:58:45,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-11-06 21:58:45,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:58:45,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-11-06 21:58:45,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,839 INFO L175 Difference]: Start difference. First operand has 97 places, 187 transitions, 2281 flow. Second operand 3 states and 546 transitions. [2023-11-06 21:58:45,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 260 transitions, 3641 flow [2023-11-06 21:58:45,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 260 transitions, 3529 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 21:58:45,931 INFO L231 Difference]: Finished difference. Result has 95 places, 187 transitions, 2206 flow [2023-11-06 21:58:45,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2188, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2206, PETRI_PLACES=95, PETRI_TRANSITIONS=187} [2023-11-06 21:58:45,932 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2023-11-06 21:58:45,933 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 187 transitions, 2206 flow [2023-11-06 21:58:45,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:45,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:58:45,933 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:45,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 21:58:45,934 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)] === [2023-11-06 21:58:45,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash 276595029, now seen corresponding path program 1 times [2023-11-06 21:58:45,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:45,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912022799] [2023-11-06 21:58:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:45,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:58:48,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912022799] [2023-11-06 21:58:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912022799] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415761199] [2023-11-06 21:58:48,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:48,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:48,832 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:48,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 21:58:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:49,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-06 21:58:49,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:49,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:58:49,620 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:58:50,015 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:50,015 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 32 [2023-11-06 21:58:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:50,210 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:51,661 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:51,661 INFO L351 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 97 treesize of output 91 [2023-11-06 21:58:51,692 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:51,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 35 [2023-11-06 21:58:51,857 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:51,857 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2023-11-06 21:58:51,864 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2023-11-06 21:58:51,897 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:58:51,898 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2023-11-06 21:58:51,906 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2023-11-06 21:58:51,917 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:58:51,936 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-06 21:58:51,937 INFO L351 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 43 treesize of output 1 [2023-11-06 21:58:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:58:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415761199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:52,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 21:58:52,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 34 [2023-11-06 21:58:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374356154] [2023-11-06 21:58:52,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:52,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-06 21:58:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:52,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-06 21:58:52,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1099, Unknown=2, NotChecked=0, Total=1260 [2023-11-06 21:58:57,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 367 [2023-11-06 21:58:57,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 187 transitions, 2206 flow. Second operand has 36 states, 36 states have (on average 97.05555555555556) internal successors, (3494), 36 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:58:57,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:58:57,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 367 [2023-11-06 21:58:57,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:02,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:59:14,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:59:17,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-06 21:59:34,163 INFO L124 PetriNetUnfolderBase]: 15594/21322 cut-off events. [2023-11-06 21:59:34,163 INFO L125 PetriNetUnfolderBase]: For 119397/119397 co-relation queries the response was YES. [2023-11-06 21:59:34,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117418 conditions, 21322 events. 15594/21322 cut-off events. For 119397/119397 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 112467 event pairs, 500 based on Foata normal form. 11/21333 useless extension candidates. Maximal degree in co-relation 117368. Up to 9066 conditions per place. [2023-11-06 21:59:34,444 INFO L140 encePairwiseOnDemand]: 349/367 looper letters, 1324 selfloop transitions, 1441 changer transitions 8/2773 dead transitions. [2023-11-06 21:59:34,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2773 transitions, 34400 flow [2023-11-06 21:59:34,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-11-06 21:59:34,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2023-11-06 21:59:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 9875 transitions. [2023-11-06 21:59:34,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2924712711764009 [2023-11-06 21:59:34,467 INFO L72 ComplementDD]: Start complementDD. Operand 92 states and 9875 transitions. [2023-11-06 21:59:34,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 92 states and 9875 transitions. [2023-11-06 21:59:34,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:34,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 92 states and 9875 transitions. [2023-11-06 21:59:34,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 93 states, 92 states have (on average 107.33695652173913) internal successors, (9875), 92 states have internal predecessors, (9875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 93 states, 93 states have (on average 367.0) internal successors, (34131), 93 states have internal predecessors, (34131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,551 INFO L81 ComplementDD]: Finished complementDD. Result has 93 states, 93 states have (on average 367.0) internal successors, (34131), 93 states have internal predecessors, (34131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:34,551 INFO L175 Difference]: Start difference. First operand has 95 places, 187 transitions, 2206 flow. Second operand 92 states and 9875 transitions. [2023-11-06 21:59:34,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 2773 transitions, 34400 flow [2023-11-06 21:59:36,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 2773 transitions, 34393 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:59:36,973 INFO L231 Difference]: Finished difference. Result has 255 places, 1603 transitions, 25946 flow [2023-11-06 21:59:36,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=92, PETRI_FLOW=25946, PETRI_PLACES=255, PETRI_TRANSITIONS=1603} [2023-11-06 21:59:36,974 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 223 predicate places. [2023-11-06 21:59:36,974 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 1603 transitions, 25946 flow [2023-11-06 21:59:36,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 97.05555555555556) internal successors, (3494), 36 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:36,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:36,975 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:36,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-06 21:59:37,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 21:59:37,181 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)] === [2023-11-06 21:59:37,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1923496179, now seen corresponding path program 1 times [2023-11-06 21:59:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94750645] [2023-11-06 21:59:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:37,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 21:59:37,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:37,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94750645] [2023-11-06 21:59:37,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94750645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:59:37,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:59:37,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:59:37,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140702342] [2023-11-06 21:59:37,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:59:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:59:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:59:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:59:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:59:37,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2023-11-06 21:59:37,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 1603 transitions, 25946 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:37,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:59:37,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2023-11-06 21:59:37,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:59:46,178 INFO L124 PetriNetUnfolderBase]: 11285/15602 cut-off events. [2023-11-06 21:59:46,178 INFO L125 PetriNetUnfolderBase]: For 404464/407003 co-relation queries the response was YES. [2023-11-06 21:59:46,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128334 conditions, 15602 events. 11285/15602 cut-off events. For 404464/407003 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 83668 event pairs, 2532 based on Foata normal form. 1480/16473 useless extension candidates. Maximal degree in co-relation 128210. Up to 7674 conditions per place. [2023-11-06 21:59:46,588 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 1001 selfloop transitions, 148 changer transitions 0/1300 dead transitions. [2023-11-06 21:59:46,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 1300 transitions, 22991 flow [2023-11-06 21:59:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:59:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:59:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2023-11-06 21:59:46,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5004541326067211 [2023-11-06 21:59:46,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2023-11-06 21:59:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2023-11-06 21:59:46,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:59:46,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2023-11-06 21:59:46,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:46,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:46,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:46,596 INFO L175 Difference]: Start difference. First operand has 255 places, 1603 transitions, 25946 flow. Second operand 3 states and 551 transitions. [2023-11-06 21:59:46,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 1300 transitions, 22991 flow [2023-11-06 21:59:52,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 1300 transitions, 20623 flow, removed 1094 selfloop flow, removed 9 redundant places. [2023-11-06 21:59:52,049 INFO L231 Difference]: Finished difference. Result has 243 places, 1235 transitions, 17937 flow [2023-11-06 21:59:52,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=17641, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1087, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=17937, PETRI_PLACES=243, PETRI_TRANSITIONS=1235} [2023-11-06 21:59:52,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2023-11-06 21:59:52,050 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 1235 transitions, 17937 flow [2023-11-06 21:59:52,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:59:52,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:59:52,051 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:59:52,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 21:59:52,051 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)] === [2023-11-06 21:59:52,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:59:52,052 INFO L85 PathProgramCache]: Analyzing trace with hash -363426387, now seen corresponding path program 2 times [2023-11-06 21:59:52,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:59:52,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892942271] [2023-11-06 21:59:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:59:52,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:59:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:59:55,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 21:59:55,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:59:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892942271] [2023-11-06 21:59:55,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892942271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 21:59:55,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876545362] [2023-11-06 21:59:55,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:59:55,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:59:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:59:55,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:59:55,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2f01b577-6049-48db-bfd3-1f6e1e6f10ba/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 21:59:55,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:59:55,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:59:55,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-06 21:59:55,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:59:56,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:59:56,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,354 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 31 [2023-11-06 21:59:56,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:59:56,707 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:56,708 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 56 [2023-11-06 21:59:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:59:57,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:59:59,745 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:59,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 27 [2023-11-06 21:59:59,753 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2023-11-06 21:59:59,824 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:59,825 INFO L351 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 157 treesize of output 151 [2023-11-06 21:59:59,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 55 [2023-11-06 21:59:59,880 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 21:59:59,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 46 [2023-11-06 22:00:00,220 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:00,220 INFO L351 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 149 treesize of output 143 [2023-11-06 22:00:00,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 63 [2023-11-06 22:00:00,271 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:00:00,271 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 50 [2023-11-06 22:00:00,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:00,551 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 22:00:00,560 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-11-06 22:00:00,560 INFO L351 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 43 treesize of output 1 [2023-11-06 22:00:00,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:00:00,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876545362] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:00:00,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:00:00,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 36 [2023-11-06 22:00:00,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622616584] [2023-11-06 22:00:00,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:00:00,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-06 22:00:00,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:00:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-06 22:00:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1237, Unknown=5, NotChecked=0, Total=1406 [2023-11-06 22:00:05,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 367 [2023-11-06 22:00:05,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1235 transitions, 17937 flow. Second operand has 38 states, 38 states have (on average 96.94736842105263) internal successors, (3684), 38 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:00:05,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:00:05,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 367 [2023-11-06 22:00:05,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:00:51,939 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse36 (* 4 c_~M~0)) (.cse3 (= (mod c_~sorted3~0 256) 0)) (.cse37 (mod c_~sorted1~0 256)) (.cse4 (= (mod c_~sorted2~0 256) 0))) (let ((.cse0 (not .cse4)) (.cse2 (= .cse37 1)) (.cse5 (= .cse37 0)) (.cse11 (< c_~N~0 (+ 2 c_~M~0))) (.cse1 (not .cse3)) (.cse16 (+ c_~A~0.offset .cse36)) (.cse15 (+ c_~A~0.offset .cse36 4))) (let ((.cse9 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base))) (.cse10 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~A~0.base))) (.cse13 (+ |c_thread1Thread1of1ForFork2_#t~mem2| 1)) (.cse23 (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse35 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse35 .cse16) (select .cse35 .cse15))))) (.cse8 (or .cse11 .cse1)) (.cse26 (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse34 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse34 .cse15) (+ (select .cse34 .cse16) 1))))) (.cse12 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4) 4)) (.cse22 (or .cse11 .cse1 .cse5)) (.cse24 (and .cse5 .cse4)) (.cse25 (and .cse0 .cse2)) (.cse28 (select |c_#memory_int| c_~A~0.base)) (.cse7 (< 0 c_~M~0)) (.cse6 (div c_~sorted1~0 256))) (and (or (< c_thread2Thread1of1ForFork0_~i~1 c_~M~0) (and .cse0 .cse1 .cse2) (and (or .cse3 .cse4) .cse5)) (<= .cse6 0) (or .cse7 (and .cse8 (or (and .cse9 (= 0 c_~M~0) .cse0 .cse10) .cse11)) .cse5) (or (and (or .cse11 .cse1 (forall ((v_ArrVal_488 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488) c_~A~0.base) .cse12) .cse13))) (or .cse11 (and (or .cse0 (forall ((v_ArrVal_489 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (let ((.cse14 (select (store .cse17 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse14 .cse15) (+ (select .cse14 .cse16) 1))) (< (select (select .cse17 c_~A~0.base) .cse12) .cse13))))) (forall ((v_ArrVal_488 (Array Int Int))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse18 (select (store .cse19 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse18 .cse16) (select .cse18 .cse15)))) (< (select (select .cse19 c_~A~0.base) .cse12) .cse13)))))) (or (forall ((v_ArrVal_489 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (let ((.cse20 (select (store .cse21 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse20 .cse15) (+ (select .cse20 .cse16) 1))) (< |c_thread1Thread1of1ForFork2_#t~mem2| (select (select .cse21 c_~A~0.base) .cse12))))) .cse3 .cse11 .cse4)) .cse7) (or .cse7 (and .cse8 (or .cse11 (and .cse9 .cse0 (= c_thread1Thread1of1ForFork2_~i~0 c_~M~0) .cse10))) .cse5) (or (and .cse22 (or .cse3 .cse11 (and (or .cse23 .cse5) (or .cse24 .cse25 .cse26)))) .cse7) (or (let ((.cse27 (select .cse28 .cse12))) (and (or (< .cse27 .cse13) (and (or (and .cse23 (or .cse0 .cse26)) .cse11) .cse8)) (or .cse3 (< |c_thread1Thread1of1ForFork2_#t~mem2| .cse27) .cse11 .cse4 .cse26))) .cse7) (or .cse7 (and .cse22 (or .cse3 .cse11 (let ((.cse30 (select .cse28 .cse15)) (.cse29 (select .cse28 .cse16))) (and (or .cse5 (< .cse29 .cse30)) (or .cse24 .cse25 (< .cse30 (+ .cse29 1)))))))) (or .cse7 (let ((.cse31 (= c_~sorted3~0 (* 256 (div c_~sorted3~0 256)))) (.cse32 (* .cse6 256))) (and (= c_~sorted2~0 1) (or .cse31 (< .cse32 c_~sorted1~0)) (let ((.cse33 (+ .cse32 1))) (or (and (not .cse31) (= .cse33 c_~sorted1~0)) (< c_~sorted1~0 .cse33)))))))))) is different from false [2023-11-06 22:00:52,769 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse40 (* 4 c_~M~0)) (.cse3 (= (mod c_~sorted3~0 256) 0)) (.cse41 (mod c_~sorted1~0 256)) (.cse4 (= (mod c_~sorted2~0 256) 0))) (let ((.cse0 (not .cse4)) (.cse2 (= .cse41 1)) (.cse5 (= .cse41 0)) (.cse11 (< c_~N~0 (+ 2 c_~M~0))) (.cse1 (not .cse3)) (.cse16 (+ c_~A~0.offset .cse40)) (.cse15 (+ c_~A~0.offset .cse40 4))) (let ((.cse9 (not (= |c_ULTIMATE.start_main_~#t2~0#1.base| c_~A~0.base))) (.cse10 (not (= |c_ULTIMATE.start_main_~#t3~0#1.base| c_~A~0.base))) (.cse13 (+ |c_thread1Thread1of1ForFork2_#t~mem2| 1)) (.cse23 (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse39 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse39 .cse16) (select .cse39 .cse15))))) (.cse8 (or .cse11 .cse1)) (.cse26 (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse38 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse38 .cse15) (+ (select .cse38 .cse16) 1))))) (.cse12 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4) 4)) (.cse22 (or .cse11 .cse1 .cse5)) (.cse24 (and .cse5 .cse4)) (.cse25 (and .cse0 .cse2)) (.cse29 (select |c_#memory_int| c_~A~0.base)) (.cse7 (< 0 c_~M~0)) (.cse6 (div c_~sorted1~0 256))) (and (or (< c_thread2Thread1of1ForFork0_~i~1 c_~M~0) (and .cse0 .cse1 .cse2) (and (or .cse3 .cse4) .cse5)) (<= .cse6 0) (or .cse7 (and .cse8 (or (and .cse9 (= 0 c_~M~0) .cse0 .cse10) .cse11)) .cse5) (or (and (or .cse11 .cse1 (forall ((v_ArrVal_488 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488) c_~A~0.base) .cse12) .cse13))) (or .cse11 (and (or .cse0 (forall ((v_ArrVal_489 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (let ((.cse14 (select (store .cse17 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse14 .cse15) (+ (select .cse14 .cse16) 1))) (< (select (select .cse17 c_~A~0.base) .cse12) .cse13))))) (forall ((v_ArrVal_488 (Array Int Int))) (let ((.cse19 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (forall ((v_ArrVal_489 (Array Int Int))) (let ((.cse18 (select (store .cse19 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse18 .cse16) (select .cse18 .cse15)))) (< (select (select .cse19 c_~A~0.base) .cse12) .cse13)))))) (or (forall ((v_ArrVal_489 (Array Int Int)) (v_ArrVal_488 (Array Int Int))) (let ((.cse21 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_488))) (or (let ((.cse20 (select (store .cse21 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_489) c_~A~0.base))) (< (select .cse20 .cse15) (+ (select .cse20 .cse16) 1))) (< |c_thread1Thread1of1ForFork2_#t~mem2| (select (select .cse21 c_~A~0.base) .cse12))))) .cse3 .cse11 .cse4)) .cse7) (or .cse7 (and .cse8 (or .cse11 (and .cse9 .cse0 (= c_thread1Thread1of1ForFork2_~i~0 c_~M~0) .cse10))) .cse5) (or (and .cse22 (or .cse3 .cse11 (and (or .cse23 .cse5) (or .cse24 .cse25 .cse26)))) .cse7) (or .cse7 (let ((.cse31 (< c_~N~0 (+ 2 c_thread3Thread1of1ForFork1_~i~2)))) (and (or .cse3 (let ((.cse30 (* c_thread3Thread1of1ForFork1_~i~2 4))) (let ((.cse28 (select .cse29 (+ c_~A~0.offset .cse30))) (.cse27 (select .cse29 (+ c_~A~0.offset 4 .cse30)))) (and (or .cse24 .cse25 (< .cse27 (+ .cse28 1))) (or .cse5 (< .cse28 .cse27))))) .cse31) (or .cse31 .cse1 .cse5)))) (or (let ((.cse32 (select .cse29 .cse12))) (and (or (< .cse32 .cse13) (and (or (and .cse23 (or .cse0 .cse26)) .cse11) .cse8)) (or .cse3 (< |c_thread1Thread1of1ForFork2_#t~mem2| .cse32) .cse11 .cse4 .cse26))) .cse7) (or .cse7 (and .cse22 (or .cse3 .cse11 (let ((.cse34 (select .cse29 .cse15)) (.cse33 (select .cse29 .cse16))) (and (or .cse5 (< .cse33 .cse34)) (or .cse24 .cse25 (< .cse34 (+ .cse33 1)))))))) (or .cse7 (let ((.cse35 (= c_~sorted3~0 (* 256 (div c_~sorted3~0 256)))) (.cse36 (* .cse6 256))) (and (= c_~sorted2~0 1) (or .cse35 (< .cse36 c_~sorted1~0)) (let ((.cse37 (+ .cse36 1))) (or (and (not .cse35) (= .cse37 c_~sorted1~0)) (< c_~sorted1~0 .cse37)))))))))) is different from false [2023-11-06 22:01:32,350 INFO L124 PetriNetUnfolderBase]: 36948/51059 cut-off events. [2023-11-06 22:01:32,350 INFO L125 PetriNetUnfolderBase]: For 1081123/1081123 co-relation queries the response was YES. [2023-11-06 22:01:33,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391194 conditions, 51059 events. 36948/51059 cut-off events. For 1081123/1081123 co-relation queries the response was YES. Maximal size of possible extension queue 1725. Compared 306997 event pairs, 1821 based on Foata normal form. 12/51061 useless extension candidates. Maximal degree in co-relation 391077. Up to 15392 conditions per place. [2023-11-06 22:01:33,623 INFO L140 encePairwiseOnDemand]: 347/367 looper letters, 2245 selfloop transitions, 4538 changer transitions 9/6792 dead transitions. [2023-11-06 22:01:33,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 6792 transitions, 112892 flow [2023-11-06 22:01:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-11-06 22:01:33,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2023-11-06 22:01:33,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 18842 transitions. [2023-11-06 22:01:33,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2868189913689434 [2023-11-06 22:01:33,681 INFO L72 ComplementDD]: Start complementDD. Operand 179 states and 18842 transitions. [2023-11-06 22:01:33,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 18842 transitions. [2023-11-06 22:01:33,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:01:33,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 179 states and 18842 transitions. [2023-11-06 22:01:33,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 180 states, 179 states have (on average 105.26256983240224) internal successors, (18842), 179 states have internal predecessors, (18842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 180 states, 180 states have (on average 367.0) internal successors, (66060), 180 states have internal predecessors, (66060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,815 INFO L81 ComplementDD]: Finished complementDD. Result has 180 states, 180 states have (on average 367.0) internal successors, (66060), 180 states have internal predecessors, (66060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:01:33,815 INFO L175 Difference]: Start difference. First operand has 243 places, 1235 transitions, 17937 flow. Second operand 179 states and 18842 transitions. [2023-11-06 22:01:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 6792 transitions, 112892 flow