./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/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_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/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_5da0ce88-1cc4-4411-b179-8fe2010aaa93/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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:19:36,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:19:37,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:19:37,065 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:19:37,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:19:37,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:19:37,092 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:19:37,092 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:19:37,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:19:37,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:19:37,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:19:37,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:19:37,096 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:19:37,097 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:19:37,097 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:19:37,098 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:19:37,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:19:37,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:19:37,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:19:37,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:19:37,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:19:37,102 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:19:37,102 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:19:37,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:19:37,103 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:19:37,104 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:19:37,104 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:19:37,105 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:19:37,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:37,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:19:37,106 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:19:37,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:19:37,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:19:37,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:19:37,108 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:19:37,109 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:19:37,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:19:37,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:19:37,117 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:19:37,117 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_5da0ce88-1cc4-4411-b179-8fe2010aaa93/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2023-11-06 22:19:37,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:19:37,408 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:19:37,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:19:37,413 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:19:37,414 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:19:37,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-06 22:19:40,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:19:40,797 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:19:40,798 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2023-11-06 22:19:40,808 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/data/9315c5636/41990b25a2f24dcc9c5f5df6696485c5/FLAG13b4ef913 [2023-11-06 22:19:40,823 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/data/9315c5636/41990b25a2f24dcc9c5f5df6696485c5 [2023-11-06 22:19:40,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:19:40,828 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:19:40,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:40,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:19:40,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:19:40,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:40" (1/1) ... [2023-11-06 22:19:40,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58e10ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:40, skipping insertion in model container [2023-11-06 22:19:40,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:19:40" (1/1) ... [2023-11-06 22:19:40,870 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:19:41,109 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_5da0ce88-1cc4-4411-b179-8fe2010aaa93/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-11-06 22:19:41,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:41,132 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:19:41,204 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_5da0ce88-1cc4-4411-b179-8fe2010aaa93/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2023-11-06 22:19:41,217 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:19:41,235 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:19:41,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41 WrapperNode [2023-11-06 22:19:41,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:19:41,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:41,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:19:41,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:19:41,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,272 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,326 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 603 [2023-11-06 22:19:41,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:19:41,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:19:41,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:19:41,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:19:41,335 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,344 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,374 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,377 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:19:41,390 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:19:41,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:19:41,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:19:41,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (1/1) ... [2023-11-06 22:19:41,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:19:41,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:19:41,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:19:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:19:41,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:19:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:19:41,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:19:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:19:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:19:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:19:41,520 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:19:41,520 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:19:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:19:41,521 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:19:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:19:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:19:41,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:19:41,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:19:41,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:19:41,526 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 22:19:41,713 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:19:41,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:19:42,691 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:19:42,706 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:19:42,706 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 22:19:42,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:42 BoogieIcfgContainer [2023-11-06 22:19:42,710 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:19:42,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:19:42,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:19:42,717 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:19:42,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:19:40" (1/3) ... [2023-11-06 22:19:42,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f7e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:42, skipping insertion in model container [2023-11-06 22:19:42,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:19:41" (2/3) ... [2023-11-06 22:19:42,719 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796f7e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:19:42, skipping insertion in model container [2023-11-06 22:19:42,719 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:19:42" (3/3) ... [2023-11-06 22:19:42,720 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2023-11-06 22:19:42,730 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:19:42,742 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:19:42,742 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:19:42,742 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:19:43,014 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:19:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 724 places, 787 transitions, 1595 flow [2023-11-06 22:19:43,546 INFO L124 PetriNetUnfolderBase]: 73/784 cut-off events. [2023-11-06 22:19:43,546 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:19:43,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 797 conditions, 784 events. 73/784 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2727 event pairs, 0 based on Foata normal form. 0/710 useless extension candidates. Maximal degree in co-relation 583. Up to 2 conditions per place. [2023-11-06 22:19:43,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 724 places, 787 transitions, 1595 flow [2023-11-06 22:19:43,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 710 places, 773 transitions, 1564 flow [2023-11-06 22:19:43,608 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:19:43,625 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 710 places, 773 transitions, 1564 flow [2023-11-06 22:19:43,629 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 710 places, 773 transitions, 1564 flow [2023-11-06 22:19:43,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 710 places, 773 transitions, 1564 flow [2023-11-06 22:19:43,961 INFO L124 PetriNetUnfolderBase]: 73/773 cut-off events. [2023-11-06 22:19:43,961 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:19:43,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 773 events. 73/773 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2730 event pairs, 0 based on Foata normal form. 0/700 useless extension candidates. Maximal degree in co-relation 583. Up to 2 conditions per place. [2023-11-06 22:19:44,060 INFO L119 LiptonReduction]: Number of co-enabled transitions 192030 [2023-11-06 22:20:18,573 INFO L134 LiptonReduction]: Checked pairs total: 185212 [2023-11-06 22:20:18,574 INFO L136 LiptonReduction]: Total number of compositions: 997 [2023-11-06 22:20:18,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:20:18,598 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;@6c5dff44, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:20:18,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-06 22:20:18,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:20:18,611 INFO L124 PetriNetUnfolderBase]: 12/47 cut-off events. [2023-11-06 22:20:18,611 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:20:18,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:18,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:18,613 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 22:20:18,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:18,619 INFO L85 PathProgramCache]: Analyzing trace with hash -841812030, now seen corresponding path program 1 times [2023-11-06 22:20:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:18,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679113227] [2023-11-06 22:20:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:18,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:19,248 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 22:20:19,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:19,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679113227] [2023-11-06 22:20:19,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679113227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546647851] [2023-11-06 22:20:19,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:19,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 725 out of 1784 [2023-11-06 22:20:19,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 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 22:20:19,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:19,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 725 of 1784 [2023-11-06 22:20:19,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:20,354 INFO L124 PetriNetUnfolderBase]: 2694/3589 cut-off events. [2023-11-06 22:20:20,355 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2023-11-06 22:20:20,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 3589 events. 2694/3589 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12714 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6908. Up to 3587 conditions per place. [2023-11-06 22:20:20,381 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 45 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-11-06 22:20:20,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 222 flow [2023-11-06 22:20:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:20:20,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:20:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2229 transitions. [2023-11-06 22:20:20,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164798206278027 [2023-11-06 22:20:20,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2229 transitions. [2023-11-06 22:20:20,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2229 transitions. [2023-11-06 22:20:20,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:20,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2229 transitions. [2023-11-06 22:20:20,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 743.0) internal successors, (2229), 3 states have internal predecessors, (2229), 0 states have call successors, (0), 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 22:20:20,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 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 22:20:20,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 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 22:20:20,457 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 114 flow. Second operand 3 states and 2229 transitions. [2023-11-06 22:20:20,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 222 flow [2023-11-06 22:20:20,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:20:20,472 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 134 flow [2023-11-06 22:20:20,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-11-06 22:20:20,477 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-11-06 22:20:20,478 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 134 flow [2023-11-06 22:20:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 731.3333333333334) internal successors, (2194), 3 states have internal predecessors, (2194), 0 states have call successors, (0), 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 22:20:20,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:20,480 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 22:20:20,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:20:20,481 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 22:20:20,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:20,482 INFO L85 PathProgramCache]: Analyzing trace with hash -2021521612, now seen corresponding path program 1 times [2023-11-06 22:20:20,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:20,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309363455] [2023-11-06 22:20:20,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:20,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:20,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:20,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:20,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309363455] [2023-11-06 22:20:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309363455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:20,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080638202] [2023-11-06 22:20:20,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:20,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:20,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:20,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:20:20,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:20,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:20:20,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:20,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:20:21,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080638202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:21,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:21,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-11-06 22:20:21,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558364467] [2023-11-06 22:20:21,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:21,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:20:21,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:21,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:20:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:20:21,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1784 [2023-11-06 22:20:21,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 722.5) internal successors, (5780), 8 states have internal predecessors, (5780), 0 states have call successors, (0), 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 22:20:21,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:21,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1784 [2023-11-06 22:20:21,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:22,142 INFO L124 PetriNetUnfolderBase]: 2694/3598 cut-off events. [2023-11-06 22:20:22,142 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-06 22:20:22,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 3598 events. 2694/3598 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12710 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7284. Up to 3587 conditions per place. [2023-11-06 22:20:22,166 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 45 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2023-11-06 22:20:22,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 290 flow [2023-11-06 22:20:22,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:20:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:20:22,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4383 transitions. [2023-11-06 22:20:22,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40947309417040356 [2023-11-06 22:20:22,184 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4383 transitions. [2023-11-06 22:20:22,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4383 transitions. [2023-11-06 22:20:22,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:22,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4383 transitions. [2023-11-06 22:20:22,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 730.5) internal successors, (4383), 6 states have internal predecessors, (4383), 0 states have call successors, (0), 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 22:20:22,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 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 22:20:22,240 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 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 22:20:22,241 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 134 flow. Second operand 6 states and 4383 transitions. [2023-11-06 22:20:22,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 290 flow [2023-11-06 22:20:22,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:22,244 INFO L231 Difference]: Finished difference. Result has 50 places, 60 transitions, 224 flow [2023-11-06 22:20:22,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=60} [2023-11-06 22:20:22,245 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-11-06 22:20:22,246 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 60 transitions, 224 flow [2023-11-06 22:20:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 722.5) internal successors, (5780), 8 states have internal predecessors, (5780), 0 states have call successors, (0), 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 22:20:22,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:22,251 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:22,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:22,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:22,458 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 22:20:22,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 152220180, now seen corresponding path program 2 times [2023-11-06 22:20:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:22,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106304493] [2023-11-06 22:20:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:20:22,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106304493] [2023-11-06 22:20:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106304493] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609590719] [2023-11-06 22:20:22,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:20:22,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:22,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:22,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:22,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:20:22,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:20:22,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:22,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:20:22,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:24,494 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:20:24,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609590719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:24,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-11-06 22:20:24,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420999041] [2023-11-06 22:20:24,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:24,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:24,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 709 out of 1784 [2023-11-06 22:20:25,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 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 22:20:25,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:25,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 709 of 1784 [2023-11-06 22:20:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:26,719 INFO L124 PetriNetUnfolderBase]: 3034/4117 cut-off events. [2023-11-06 22:20:26,719 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-06 22:20:26,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8413 conditions, 4117 events. 3034/4117 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15888 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8325. Up to 3517 conditions per place. [2023-11-06 22:20:26,746 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 98 selfloop transitions, 2 changer transitions 7/107 dead transitions. [2023-11-06 22:20:26,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 107 transitions, 544 flow [2023-11-06 22:20:26,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3641 transitions. [2023-11-06 22:20:26,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40818385650224215 [2023-11-06 22:20:26,763 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3641 transitions. [2023-11-06 22:20:26,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3641 transitions. [2023-11-06 22:20:26,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:26,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3641 transitions. [2023-11-06 22:20:26,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 728.2) internal successors, (3641), 5 states have internal predecessors, (3641), 0 states have call successors, (0), 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 22:20:26,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:26,802 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:26,802 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 224 flow. Second operand 5 states and 3641 transitions. [2023-11-06 22:20:26,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 107 transitions, 544 flow [2023-11-06 22:20:26,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-06 22:20:26,808 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 215 flow [2023-11-06 22:20:26,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-11-06 22:20:26,809 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-11-06 22:20:26,809 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 215 flow [2023-11-06 22:20:26,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 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 22:20:26,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:26,812 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:26,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:27,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:27,025 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 22:20:27,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:27,026 INFO L85 PathProgramCache]: Analyzing trace with hash -822410276, now seen corresponding path program 3 times [2023-11-06 22:20:27,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279906552] [2023-11-06 22:20:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:27,323 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:20:27,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279906552] [2023-11-06 22:20:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279906552] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074996234] [2023-11-06 22:20:27,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:20:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:27,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:27,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:20:27,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-06 22:20:27,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:27,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:20:27,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:20:28,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:20:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074996234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:28,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:20:28,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-06 22:20:28,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354228927] [2023-11-06 22:20:28,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:28,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:28,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:28,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:28,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:20:29,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 709 out of 1784 [2023-11-06 22:20:29,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 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 22:20:29,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:29,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 709 of 1784 [2023-11-06 22:20:29,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:30,919 INFO L124 PetriNetUnfolderBase]: 3224/4457 cut-off events. [2023-11-06 22:20:30,919 INFO L125 PetriNetUnfolderBase]: For 693/693 co-relation queries the response was YES. [2023-11-06 22:20:30,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 4457 events. 3224/4457 cut-off events. For 693/693 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18374 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9571. Up to 3969 conditions per place. [2023-11-06 22:20:30,954 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 101 selfloop transitions, 3 changer transitions 7/111 dead transitions. [2023-11-06 22:20:30,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 559 flow [2023-11-06 22:20:30,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3644 transitions. [2023-11-06 22:20:30,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085201793721973 [2023-11-06 22:20:30,970 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3644 transitions. [2023-11-06 22:20:30,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3644 transitions. [2023-11-06 22:20:30,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:30,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3644 transitions. [2023-11-06 22:20:30,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 728.8) internal successors, (3644), 5 states have internal predecessors, (3644), 0 states have call successors, (0), 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 22:20:31,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:31,006 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:31,006 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 215 flow. Second operand 5 states and 3644 transitions. [2023-11-06 22:20:31,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 559 flow [2023-11-06 22:20:31,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 550 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:31,012 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 232 flow [2023-11-06 22:20:31,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-11-06 22:20:31,013 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-11-06 22:20:31,014 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 232 flow [2023-11-06 22:20:31,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 713.4) internal successors, (3567), 5 states have internal predecessors, (3567), 0 states have call successors, (0), 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 22:20:31,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:31,016 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:31,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:20:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:31,222 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 22:20:31,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:31,223 INFO L85 PathProgramCache]: Analyzing trace with hash 763356518, now seen corresponding path program 4 times [2023-11-06 22:20:31,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:31,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140308872] [2023-11-06 22:20:31,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:31,442 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:20:31,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:31,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140308872] [2023-11-06 22:20:31,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140308872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:20:31,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998211624] [2023-11-06 22:20:31,447 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:20:31,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:31,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:20:31,448 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:20:31,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:20:31,819 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:20:31,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:20:31,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:20:31,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:20:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:20:31,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:20:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 22:20:32,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998211624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:20:32,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:20:32,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-11-06 22:20:32,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433435877] [2023-11-06 22:20:32,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:20:32,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:20:32,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:32,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:20:32,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:20:32,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 719 out of 1784 [2023-11-06 22:20:32,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 232 flow. Second operand has 17 states, 17 states have (on average 721.1764705882352) internal successors, (12260), 17 states have internal predecessors, (12260), 0 states have call successors, (0), 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 22:20:32,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:32,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 719 of 1784 [2023-11-06 22:20:32,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:33,523 INFO L124 PetriNetUnfolderBase]: 3223/4452 cut-off events. [2023-11-06 22:20:33,524 INFO L125 PetriNetUnfolderBase]: For 1808/1808 co-relation queries the response was YES. [2023-11-06 22:20:33,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 4452 events. 3223/4452 cut-off events. For 1808/1808 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17937 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10079. Up to 4438 conditions per place. [2023-11-06 22:20:33,553 INFO L140 encePairwiseOnDemand]: 1777/1784 looper letters, 47 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2023-11-06 22:20:33,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 380 flow [2023-11-06 22:20:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:20:33,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5099 transitions. [2023-11-06 22:20:33,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40831197950032033 [2023-11-06 22:20:33,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5099 transitions. [2023-11-06 22:20:33,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5099 transitions. [2023-11-06 22:20:33,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:33,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5099 transitions. [2023-11-06 22:20:33,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 728.4285714285714) internal successors, (5099), 7 states have internal predecessors, (5099), 0 states have call successors, (0), 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 22:20:33,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 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 22:20:33,618 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 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 22:20:33,619 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 232 flow. Second operand 7 states and 5099 transitions. [2023-11-06 22:20:33,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 380 flow [2023-11-06 22:20:33,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 374 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 22:20:33,629 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 294 flow [2023-11-06 22:20:33,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-06 22:20:33,632 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-11-06 22:20:33,632 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 294 flow [2023-11-06 22:20:33,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 721.1764705882352) internal successors, (12260), 17 states have internal predecessors, (12260), 0 states have call successors, (0), 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 22:20:33,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:33,636 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:33,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-06 22:20:33,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5da0ce88-1cc4-4411-b179-8fe2010aaa93/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:20:33,843 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 22:20:33,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:33,844 INFO L85 PathProgramCache]: Analyzing trace with hash 372234976, now seen corresponding path program 5 times [2023-11-06 22:20:33,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:33,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304882475] [2023-11-06 22:20:33,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:33,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:20:35,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:35,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304882475] [2023-11-06 22:20:35,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304882475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:35,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:35,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:35,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107416721] [2023-11-06 22:20:35,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:35,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:35,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:35,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:35,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:35,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1784 [2023-11-06 22:20:35,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:35,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:35,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1784 [2023-11-06 22:20:35,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:38,835 INFO L124 PetriNetUnfolderBase]: 7719/10587 cut-off events. [2023-11-06 22:20:38,836 INFO L125 PetriNetUnfolderBase]: For 1810/1810 co-relation queries the response was YES. [2023-11-06 22:20:38,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22754 conditions, 10587 events. 7719/10587 cut-off events. For 1810/1810 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 52020 event pairs, 1252 based on Foata normal form. 1/8396 useless extension candidates. Maximal degree in co-relation 22641. Up to 3811 conditions per place. [2023-11-06 22:20:38,901 INFO L140 encePairwiseOnDemand]: 1771/1784 looper letters, 160 selfloop transitions, 42 changer transitions 1/203 dead transitions. [2023-11-06 22:20:38,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 203 transitions, 1044 flow [2023-11-06 22:20:38,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:20:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:20:38,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5126 transitions. [2023-11-06 22:20:38,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104740550928892 [2023-11-06 22:20:38,920 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5126 transitions. [2023-11-06 22:20:38,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5126 transitions. [2023-11-06 22:20:38,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:38,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5126 transitions. [2023-11-06 22:20:38,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 732.2857142857143) internal successors, (5126), 7 states have internal predecessors, (5126), 0 states have call successors, (0), 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 22:20:38,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 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 22:20:38,960 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1784.0) internal successors, (14272), 8 states have internal predecessors, (14272), 0 states have call successors, (0), 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 22:20:38,960 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 294 flow. Second operand 7 states and 5126 transitions. [2023-11-06 22:20:38,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 203 transitions, 1044 flow [2023-11-06 22:20:38,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 203 transitions, 1008 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-06 22:20:38,977 INFO L231 Difference]: Finished difference. Result has 71 places, 108 transitions, 585 flow [2023-11-06 22:20:38,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=585, PETRI_PLACES=71, PETRI_TRANSITIONS=108} [2023-11-06 22:20:38,978 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-11-06 22:20:38,979 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 108 transitions, 585 flow [2023-11-06 22:20:38,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:38,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:38,980 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:38,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:20:38,981 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 22:20:38,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash 511149970, now seen corresponding path program 6 times [2023-11-06 22:20:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926783594] [2023-11-06 22:20:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:38,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:20:40,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:40,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926783594] [2023-11-06 22:20:40,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926783594] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:40,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:40,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:40,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369530582] [2023-11-06 22:20:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:40,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:40,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:40,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:40,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:40,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1784 [2023-11-06 22:20:40,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 108 transitions, 585 flow. Second operand has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:40,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:40,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1784 [2023-11-06 22:20:40,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:43,960 INFO L124 PetriNetUnfolderBase]: 9993/13696 cut-off events. [2023-11-06 22:20:43,960 INFO L125 PetriNetUnfolderBase]: For 10262/10262 co-relation queries the response was YES. [2023-11-06 22:20:44,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38915 conditions, 13696 events. 9993/13696 cut-off events. For 10262/10262 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 68426 event pairs, 2779 based on Foata normal form. 1/11107 useless extension candidates. Maximal degree in co-relation 38815. Up to 7378 conditions per place. [2023-11-06 22:20:44,066 INFO L140 encePairwiseOnDemand]: 1771/1784 looper letters, 153 selfloop transitions, 47 changer transitions 2/202 dead transitions. [2023-11-06 22:20:44,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 202 transitions, 1379 flow [2023-11-06 22:20:44,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:44,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3646 transitions. [2023-11-06 22:20:44,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087443946188341 [2023-11-06 22:20:44,081 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3646 transitions. [2023-11-06 22:20:44,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3646 transitions. [2023-11-06 22:20:44,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:44,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3646 transitions. [2023-11-06 22:20:44,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 729.2) internal successors, (3646), 5 states have internal predecessors, (3646), 0 states have call successors, (0), 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 22:20:44,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:44,109 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:44,109 INFO L175 Difference]: Start difference. First operand has 71 places, 108 transitions, 585 flow. Second operand 5 states and 3646 transitions. [2023-11-06 22:20:44,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 202 transitions, 1379 flow [2023-11-06 22:20:44,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 202 transitions, 1371 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:44,193 INFO L231 Difference]: Finished difference. Result has 79 places, 145 transitions, 1037 flow [2023-11-06 22:20:44,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1037, PETRI_PLACES=79, PETRI_TRANSITIONS=145} [2023-11-06 22:20:44,194 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-11-06 22:20:44,194 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 145 transitions, 1037 flow [2023-11-06 22:20:44,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:44,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:44,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:44,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:20:44,197 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 22:20:44,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1976741754, now seen corresponding path program 7 times [2023-11-06 22:20:44,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907639870] [2023-11-06 22:20:44,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:20:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:45,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907639870] [2023-11-06 22:20:45,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907639870] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:45,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:45,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370749345] [2023-11-06 22:20:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:45,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:45,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:45,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1784 [2023-11-06 22:20:45,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 145 transitions, 1037 flow. Second operand has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:45,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:45,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1784 [2023-11-06 22:20:45,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:49,884 INFO L124 PetriNetUnfolderBase]: 10430/14355 cut-off events. [2023-11-06 22:20:49,884 INFO L125 PetriNetUnfolderBase]: For 19630/19630 co-relation queries the response was YES. [2023-11-06 22:20:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45402 conditions, 14355 events. 10430/14355 cut-off events. For 19630/19630 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 72734 event pairs, 4781 based on Foata normal form. 1/11640 useless extension candidates. Maximal degree in co-relation 45298. Up to 11796 conditions per place. [2023-11-06 22:20:49,999 INFO L140 encePairwiseOnDemand]: 1772/1784 looper letters, 202 selfloop transitions, 43 changer transitions 2/247 dead transitions. [2023-11-06 22:20:50,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 247 transitions, 2060 flow [2023-11-06 22:20:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:50,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3658 transitions. [2023-11-06 22:20:50,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100896860986547 [2023-11-06 22:20:50,011 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3658 transitions. [2023-11-06 22:20:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3658 transitions. [2023-11-06 22:20:50,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:50,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3658 transitions. [2023-11-06 22:20:50,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 731.6) internal successors, (3658), 5 states have internal predecessors, (3658), 0 states have call successors, (0), 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 22:20:50,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:50,040 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:50,041 INFO L175 Difference]: Start difference. First operand has 79 places, 145 transitions, 1037 flow. Second operand 5 states and 3658 transitions. [2023-11-06 22:20:50,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 247 transitions, 2060 flow [2023-11-06 22:20:50,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 247 transitions, 2048 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:50,232 INFO L231 Difference]: Finished difference. Result has 86 places, 172 transitions, 1466 flow [2023-11-06 22:20:50,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1466, PETRI_PLACES=86, PETRI_TRANSITIONS=172} [2023-11-06 22:20:50,235 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-11-06 22:20:50,236 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 172 transitions, 1466 flow [2023-11-06 22:20:50,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:50,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:50,237 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:50,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:20:50,238 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 22:20:50,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:50,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1335305584, now seen corresponding path program 8 times [2023-11-06 22:20:50,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:50,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049179309] [2023-11-06 22:20:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:50,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:20:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:51,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049179309] [2023-11-06 22:20:51,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049179309] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:51,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:51,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:20:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400261983] [2023-11-06 22:20:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:51,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:20:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:20:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:20:52,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 1784 [2023-11-06 22:20:52,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 172 transitions, 1466 flow. Second operand has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:52,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:52,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 1784 [2023-11-06 22:20:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:20:56,554 INFO L124 PetriNetUnfolderBase]: 10583/14586 cut-off events. [2023-11-06 22:20:56,554 INFO L125 PetriNetUnfolderBase]: For 27788/27788 co-relation queries the response was YES. [2023-11-06 22:20:56,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50416 conditions, 14586 events. 10583/14586 cut-off events. For 27788/27788 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 75350 event pairs, 2653 based on Foata normal form. 1/11817 useless extension candidates. Maximal degree in co-relation 50308. Up to 7426 conditions per place. [2023-11-06 22:20:56,687 INFO L140 encePairwiseOnDemand]: 1773/1784 looper letters, 193 selfloop transitions, 47 changer transitions 2/242 dead transitions. [2023-11-06 22:20:56,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 242 transitions, 2281 flow [2023-11-06 22:20:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:20:56,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:20:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3652 transitions. [2023-11-06 22:20:56,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094170403587444 [2023-11-06 22:20:56,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3652 transitions. [2023-11-06 22:20:56,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3652 transitions. [2023-11-06 22:20:56,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:20:56,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3652 transitions. [2023-11-06 22:20:56,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 730.4) internal successors, (3652), 5 states have internal predecessors, (3652), 0 states have call successors, (0), 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 22:20:56,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:56,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1784.0) internal successors, (10704), 6 states have internal predecessors, (10704), 0 states have call successors, (0), 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 22:20:56,720 INFO L175 Difference]: Start difference. First operand has 86 places, 172 transitions, 1466 flow. Second operand 5 states and 3652 transitions. [2023-11-06 22:20:56,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 242 transitions, 2281 flow [2023-11-06 22:20:57,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 242 transitions, 2273 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-11-06 22:20:57,464 INFO L231 Difference]: Finished difference. Result has 92 places, 181 transitions, 1701 flow [2023-11-06 22:20:57,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1701, PETRI_PLACES=92, PETRI_TRANSITIONS=181} [2023-11-06 22:20:57,465 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-11-06 22:20:57,466 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 181 transitions, 1701 flow [2023-11-06 22:20:57,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 710.4) internal successors, (3552), 5 states have internal predecessors, (3552), 0 states have call successors, (0), 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 22:20:57,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:20:57,467 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:20:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:20:57,467 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 22:20:57,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:20:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1637919565, now seen corresponding path program 1 times [2023-11-06 22:20:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:20:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690385373] [2023-11-06 22:20:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:20:57,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:20:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:20:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:20:57,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:20:57,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690385373] [2023-11-06 22:20:57,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690385373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:20:57,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:20:57,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:20:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783403903] [2023-11-06 22:20:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:20:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:20:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:20:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:20:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:20:57,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 1784 [2023-11-06 22:20:57,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 181 transitions, 1701 flow. Second operand has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 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 22:20:57,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:20:57,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 1784 [2023-11-06 22:20:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:03,227 INFO L124 PetriNetUnfolderBase]: 15666/21414 cut-off events. [2023-11-06 22:21:03,227 INFO L125 PetriNetUnfolderBase]: For 49718/49718 co-relation queries the response was YES. [2023-11-06 22:21:03,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77171 conditions, 21414 events. 15666/21414 cut-off events. For 49718/49718 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 109223 event pairs, 5805 based on Foata normal form. 0/17404 useless extension candidates. Maximal degree in co-relation 77060. Up to 14971 conditions per place. [2023-11-06 22:21:03,395 INFO L140 encePairwiseOnDemand]: 1780/1784 looper letters, 231 selfloop transitions, 9 changer transitions 0/240 dead transitions. [2023-11-06 22:21:03,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 240 transitions, 2581 flow [2023-11-06 22:21:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:21:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:21:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2286 transitions. [2023-11-06 22:21:03,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42713004484304934 [2023-11-06 22:21:03,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2286 transitions. [2023-11-06 22:21:03,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2286 transitions. [2023-11-06 22:21:03,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:03,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2286 transitions. [2023-11-06 22:21:03,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 762.0) internal successors, (2286), 3 states have internal predecessors, (2286), 0 states have call successors, (0), 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 22:21:03,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 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 22:21:03,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1784.0) internal successors, (7136), 4 states have internal predecessors, (7136), 0 states have call successors, (0), 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 22:21:03,419 INFO L175 Difference]: Start difference. First operand has 92 places, 181 transitions, 1701 flow. Second operand 3 states and 2286 transitions. [2023-11-06 22:21:03,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 240 transitions, 2581 flow [2023-11-06 22:21:03,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 240 transitions, 2517 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:03,995 INFO L231 Difference]: Finished difference. Result has 94 places, 183 transitions, 1678 flow [2023-11-06 22:21:03,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1641, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1678, PETRI_PLACES=94, PETRI_TRANSITIONS=183} [2023-11-06 22:21:03,996 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-11-06 22:21:03,997 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 183 transitions, 1678 flow [2023-11-06 22:21:03,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 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 22:21:03,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:03,997 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:03,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:21:03,997 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 22:21:03,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:03,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1174342774, now seen corresponding path program 1 times [2023-11-06 22:21:03,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:03,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416535354] [2023-11-06 22:21:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:04,259 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:21:04,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:04,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416535354] [2023-11-06 22:21:04,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416535354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:04,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:04,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:21:04,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069898223] [2023-11-06 22:21:04,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:04,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:21:04,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:04,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:21:04,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:21:04,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 721 out of 1784 [2023-11-06 22:21:04,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 183 transitions, 1678 flow. Second operand has 5 states, 5 states have (on average 725.6) internal successors, (3628), 5 states have internal predecessors, (3628), 0 states have call successors, (0), 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 22:21:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 721 of 1784 [2023-11-06 22:21:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:21:12,889 INFO L124 PetriNetUnfolderBase]: 24058/32735 cut-off events. [2023-11-06 22:21:12,889 INFO L125 PetriNetUnfolderBase]: For 63419/63419 co-relation queries the response was YES. [2023-11-06 22:21:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118404 conditions, 32735 events. 24058/32735 cut-off events. For 63419/63419 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 177332 event pairs, 2798 based on Foata normal form. 131/26532 useless extension candidates. Maximal degree in co-relation 118292. Up to 17340 conditions per place. [2023-11-06 22:21:13,151 INFO L140 encePairwiseOnDemand]: 1773/1784 looper letters, 276 selfloop transitions, 47 changer transitions 59/382 dead transitions. [2023-11-06 22:21:13,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 382 transitions, 3873 flow [2023-11-06 22:21:13,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:21:13,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:21:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4488 transitions. [2023-11-06 22:21:13,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192825112107623 [2023-11-06 22:21:13,164 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4488 transitions. [2023-11-06 22:21:13,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4488 transitions. [2023-11-06 22:21:13,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:21:13,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4488 transitions. [2023-11-06 22:21:13,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 748.0) internal successors, (4488), 6 states have internal predecessors, (4488), 0 states have call successors, (0), 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 22:21:13,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 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 22:21:13,189 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1784.0) internal successors, (12488), 7 states have internal predecessors, (12488), 0 states have call successors, (0), 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 22:21:13,189 INFO L175 Difference]: Start difference. First operand has 94 places, 183 transitions, 1678 flow. Second operand 6 states and 4488 transitions. [2023-11-06 22:21:13,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 382 transitions, 3873 flow [2023-11-06 22:21:14,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 382 transitions, 3845 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:21:14,878 INFO L231 Difference]: Finished difference. Result has 103 places, 190 transitions, 1911 flow [2023-11-06 22:21:14,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1784, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1911, PETRI_PLACES=103, PETRI_TRANSITIONS=190} [2023-11-06 22:21:14,880 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 57 predicate places. [2023-11-06 22:21:14,880 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 190 transitions, 1911 flow [2023-11-06 22:21:14,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 725.6) internal successors, (3628), 5 states have internal predecessors, (3628), 0 states have call successors, (0), 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 22:21:14,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:21:14,881 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:21:14,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:21:14,882 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 22:21:14,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:21:14,882 INFO L85 PathProgramCache]: Analyzing trace with hash -513810110, now seen corresponding path program 2 times [2023-11-06 22:21:14,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:21:14,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824577114] [2023-11-06 22:21:14,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:21:14,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:21:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:21:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:21:15,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:21:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824577114] [2023-11-06 22:21:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824577114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:21:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:21:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:21:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378715148] [2023-11-06 22:21:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:21:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:21:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:21:15,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:21:15,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:21:15,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 730 out of 1784 [2023-11-06 22:21:15,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 190 transitions, 1911 flow. Second operand has 4 states, 4 states have (on average 735.75) internal successors, (2943), 4 states have internal predecessors, (2943), 0 states have call successors, (0), 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 22:21:15,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:21:15,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 730 of 1784 [2023-11-06 22:21:15,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand