./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/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_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/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_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:04:43,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:04:43,544 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:04:43,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:04:43,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:04:43,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:04:43,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:04:43,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:04:43,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:04:43,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:04:43,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:04:43,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:04:43,613 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:04:43,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:04:43,616 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:04:43,616 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:04:43,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:04:43,617 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:04:43,618 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:04:43,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:04:43,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:04:43,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:04:43,620 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:04:43,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:04:43,621 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:04:43,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:04:43,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:04:43,623 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:04:43,624 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:43,624 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:04:43,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:04:43,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:04:43,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:04:43,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:04:43,627 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:04:43,627 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:04:43,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:04:43,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:04:43,628 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:04:43,629 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_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2023-11-06 23:04:43,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:04:44,006 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:04:44,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:04:44,011 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:04:44,011 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:04:44,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-06 23:04:47,219 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:04:47,472 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:04:47,473 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-06 23:04:47,486 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/data/61f7327dc/dba8eb61801345968087cbd5d0f22c41/FLAG99d9b896a [2023-11-06 23:04:47,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/data/61f7327dc/dba8eb61801345968087cbd5d0f22c41 [2023-11-06 23:04:47,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:04:47,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:04:47,508 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:47,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:04:47,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:04:47,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,518 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d470e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47, skipping insertion in model container [2023-11-06 23:04:47,518 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,546 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:04:47,719 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_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-11-06 23:04:47,725 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:47,737 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:04:47,766 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_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2023-11-06 23:04:47,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:04:47,777 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:04:47,777 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:04:47,785 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:04:47,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47 WrapperNode [2023-11-06 23:04:47,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:04:47,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:47,787 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:04:47,787 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:04:47,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,857 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 205 [2023-11-06 23:04:47,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:04:47,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:04:47,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:04:47,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:04:47,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,872 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,882 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:04:47,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:04:47,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:04:47,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:04:47,895 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (1/1) ... [2023-11-06 23:04:47,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:04:47,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:04:47,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:04:47,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:04:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:04:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:04:47,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:04:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:04:47,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:04:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:04:47,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:04:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-06 23:04:47,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-06 23:04:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:04:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:04:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:04:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:04:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:04:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:04:47,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:04:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:04:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:04:47,972 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 23:04:48,149 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:04:48,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:04:48,488 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:04:48,645 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:04:48,645 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:04:48,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:48 BoogieIcfgContainer [2023-11-06 23:04:48,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:04:48,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:04:48,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:04:48,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:04:48,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:04:47" (1/3) ... [2023-11-06 23:04:48,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c37e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:48, skipping insertion in model container [2023-11-06 23:04:48,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:04:47" (2/3) ... [2023-11-06 23:04:48,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c37e8eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:04:48, skipping insertion in model container [2023-11-06 23:04:48,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:48" (3/3) ... [2023-11-06 23:04:48,658 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-06 23:04:48,667 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 23:04:48,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:04:48,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:04:48,680 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:04:48,786 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-06 23:04:48,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 146 transitions, 320 flow [2023-11-06 23:04:48,947 INFO L124 PetriNetUnfolderBase]: 2/142 cut-off events. [2023-11-06 23:04:48,947 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:04:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 142 events. 2/142 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-06 23:04:48,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 146 transitions, 320 flow [2023-11-06 23:04:48,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 129 transitions, 282 flow [2023-11-06 23:04:48,963 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:04:48,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 129 transitions, 282 flow [2023-11-06 23:04:48,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 129 transitions, 282 flow [2023-11-06 23:04:48,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 129 transitions, 282 flow [2023-11-06 23:04:49,033 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-11-06 23:04:49,033 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:04:49,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 129 events. 2/129 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-06 23:04:49,037 INFO L119 LiptonReduction]: Number of co-enabled transitions 1302 [2023-11-06 23:04:56,203 INFO L134 LiptonReduction]: Checked pairs total: 7202 [2023-11-06 23:04:56,204 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-06 23:04:56,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:04:56,229 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;@5b9e3529, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:04:56,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-06 23:04:56,241 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:04:56,241 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2023-11-06 23:04:56,241 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 23:04:56,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:56,243 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 2 more)] === [2023-11-06 23:04:56,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1181722556, now seen corresponding path program 1 times [2023-11-06 23:04:56,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:56,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717949654] [2023-11-06 23:04:56,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:56,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:57,851 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 23:04:57,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:57,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717949654] [2023-11-06 23:04:57,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717949654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:57,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:04:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043214134] [2023-11-06 23:04:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:57,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:04:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:57,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:04:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:04:57,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 256 [2023-11-06 23:04:57,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 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 23:04:57,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:57,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 256 [2023-11-06 23:04:57,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:04:59,532 INFO L124 PetriNetUnfolderBase]: 7775/10913 cut-off events. [2023-11-06 23:04:59,532 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2023-11-06 23:04:59,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22599 conditions, 10913 events. 7775/10913 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 53420 event pairs, 2526 based on Foata normal form. 1/10914 useless extension candidates. Maximal degree in co-relation 18736. Up to 5005 conditions per place. [2023-11-06 23:04:59,622 INFO L140 encePairwiseOnDemand]: 249/256 looper letters, 78 selfloop transitions, 9 changer transitions 9/96 dead transitions. [2023-11-06 23:04:59,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 441 flow [2023-11-06 23:04:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:04:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:04:59,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 667 transitions. [2023-11-06 23:04:59,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52109375 [2023-11-06 23:04:59,654 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 667 transitions. [2023-11-06 23:04:59,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 667 transitions. [2023-11-06 23:04:59,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:04:59,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 667 transitions. [2023-11-06 23:04:59,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 0 states have call successors, (0), 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 23:04:59,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:04:59,684 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:04:59,686 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 92 flow. Second operand 5 states and 667 transitions. [2023-11-06 23:04:59,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 441 flow [2023-11-06 23:04:59,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 96 transitions, 403 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-06 23:04:59,716 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 137 flow [2023-11-06 23:04:59,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-06 23:04:59,724 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, -1 predicate places. [2023-11-06 23:04:59,725 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 137 flow [2023-11-06 23:04:59,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 120.8) internal successors, (604), 5 states have internal predecessors, (604), 0 states have call successors, (0), 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 23:04:59,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:04:59,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:04:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:04:59,728 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 2 more)] === [2023-11-06 23:04:59,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:04:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1133885464, now seen corresponding path program 2 times [2023-11-06 23:04:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:04:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371409694] [2023-11-06 23:04:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:04:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:04:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:04:59,934 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 23:04:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:04:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371409694] [2023-11-06 23:04:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371409694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:04:59,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:04:59,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:04:59,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386838328] [2023-11-06 23:04:59,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:04:59,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:04:59,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:04:59,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:04:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:04:59,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:04:59,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 137 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:04:59,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:04:59,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:04:59,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:01,017 INFO L124 PetriNetUnfolderBase]: 3828/6221 cut-off events. [2023-11-06 23:05:01,018 INFO L125 PetriNetUnfolderBase]: For 1169/1547 co-relation queries the response was YES. [2023-11-06 23:05:01,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13890 conditions, 6221 events. 3828/6221 cut-off events. For 1169/1547 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 41376 event pairs, 553 based on Foata normal form. 16/5877 useless extension candidates. Maximal degree in co-relation 9044. Up to 1968 conditions per place. [2023-11-06 23:05:01,133 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 74 selfloop transitions, 33 changer transitions 1/120 dead transitions. [2023-11-06 23:05:01,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 120 transitions, 529 flow [2023-11-06 23:05:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:01,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:05:01,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 928 transitions. [2023-11-06 23:05:01,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178571428571429 [2023-11-06 23:05:01,139 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 928 transitions. [2023-11-06 23:05:01,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 928 transitions. [2023-11-06 23:05:01,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:01,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 928 transitions. [2023-11-06 23:05:01,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 132.57142857142858) internal successors, (928), 7 states have internal predecessors, (928), 0 states have call successors, (0), 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 23:05:01,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 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 23:05:01,153 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 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 23:05:01,154 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 137 flow. Second operand 7 states and 928 transitions. [2023-11-06 23:05:01,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 120 transitions, 529 flow [2023-11-06 23:05:01,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 120 transitions, 516 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:01,167 INFO L231 Difference]: Finished difference. Result has 51 places, 68 transitions, 258 flow [2023-11-06 23:05:01,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=258, PETRI_PLACES=51, PETRI_TRANSITIONS=68} [2023-11-06 23:05:01,169 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-11-06 23:05:01,169 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 68 transitions, 258 flow [2023-11-06 23:05:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:01,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:01,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:01,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:05:01,171 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 2 more)] === [2023-11-06 23:05:01,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash 362528686, now seen corresponding path program 3 times [2023-11-06 23:05:01,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546552651] [2023-11-06 23:05:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:01,923 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 23:05:01,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:01,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546552651] [2023-11-06 23:05:01,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546552651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:01,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:01,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:01,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996500149] [2023-11-06 23:05:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:01,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:01,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:01,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 256 [2023-11-06 23:05:01,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 68 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 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 23:05:01,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:01,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 256 [2023-11-06 23:05:01,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:03,758 INFO L124 PetriNetUnfolderBase]: 9711/13948 cut-off events. [2023-11-06 23:05:03,759 INFO L125 PetriNetUnfolderBase]: For 8192/8192 co-relation queries the response was YES. [2023-11-06 23:05:03,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39551 conditions, 13948 events. 9711/13948 cut-off events. For 8192/8192 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 75595 event pairs, 1758 based on Foata normal form. 2/13950 useless extension candidates. Maximal degree in co-relation 12707. Up to 6510 conditions per place. [2023-11-06 23:05:03,849 INFO L140 encePairwiseOnDemand]: 249/256 looper letters, 162 selfloop transitions, 12 changer transitions 28/202 dead transitions. [2023-11-06 23:05:03,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 202 transitions, 1160 flow [2023-11-06 23:05:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:03,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 798 transitions. [2023-11-06 23:05:03,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51953125 [2023-11-06 23:05:03,854 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 798 transitions. [2023-11-06 23:05:03,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 798 transitions. [2023-11-06 23:05:03,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:03,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 798 transitions. [2023-11-06 23:05:03,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 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 23:05:03,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:03,865 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:03,865 INFO L175 Difference]: Start difference. First operand has 51 places, 68 transitions, 258 flow. Second operand 6 states and 798 transitions. [2023-11-06 23:05:03,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 202 transitions, 1160 flow [2023-11-06 23:05:03,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 202 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:03,890 INFO L231 Difference]: Finished difference. Result has 58 places, 71 transitions, 324 flow [2023-11-06 23:05:03,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=58, PETRI_TRANSITIONS=71} [2023-11-06 23:05:03,892 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 11 predicate places. [2023-11-06 23:05:03,892 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 71 transitions, 324 flow [2023-11-06 23:05:03,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 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 23:05:03,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:03,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:03,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:05:03,894 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 2 more)] === [2023-11-06 23:05:03,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:03,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1756700230, now seen corresponding path program 4 times [2023-11-06 23:05:03,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:03,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776965788] [2023-11-06 23:05:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:03,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:04,167 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 23:05:04,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:04,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776965788] [2023-11-06 23:05:04,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776965788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:04,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:04,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:05:04,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033073877] [2023-11-06 23:05:04,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:04,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:04,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:04,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:04,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:04,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 23:05:04,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:04,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:04,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:05,491 INFO L124 PetriNetUnfolderBase]: 4551/7648 cut-off events. [2023-11-06 23:05:05,492 INFO L125 PetriNetUnfolderBase]: For 7942/9121 co-relation queries the response was YES. [2023-11-06 23:05:05,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22874 conditions, 7648 events. 4551/7648 cut-off events. For 7942/9121 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 53493 event pairs, 734 based on Foata normal form. 274/7649 useless extension candidates. Maximal degree in co-relation 14304. Up to 2410 conditions per place. [2023-11-06 23:05:05,585 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 91 selfloop transitions, 47 changer transitions 2/155 dead transitions. [2023-11-06 23:05:05,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 155 transitions, 864 flow [2023-11-06 23:05:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:05,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 815 transitions. [2023-11-06 23:05:05,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305989583333334 [2023-11-06 23:05:05,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 815 transitions. [2023-11-06 23:05:05,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 815 transitions. [2023-11-06 23:05:05,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:05,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 815 transitions. [2023-11-06 23:05:05,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 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 23:05:05,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:05,601 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:05,602 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 324 flow. Second operand 6 states and 815 transitions. [2023-11-06 23:05:05,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 155 transitions, 864 flow [2023-11-06 23:05:05,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 155 transitions, 813 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:05,622 INFO L231 Difference]: Finished difference. Result has 60 places, 98 transitions, 567 flow [2023-11-06 23:05:05,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=567, PETRI_PLACES=60, PETRI_TRANSITIONS=98} [2023-11-06 23:05:05,624 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2023-11-06 23:05:05,625 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 98 transitions, 567 flow [2023-11-06 23:05:05,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 23:05:05,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:05,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:05,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:05:05,627 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 2 more)] === [2023-11-06 23:05:05,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash -267097236, now seen corresponding path program 5 times [2023-11-06 23:05:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:05,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332306680] [2023-11-06 23:05:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:05,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:05,788 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 23:05:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332306680] [2023-11-06 23:05:05,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332306680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:05,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:05,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:05,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746289999] [2023-11-06 23:05:05,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:05,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:05,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:05,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:05,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:05,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:05,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 98 transitions, 567 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:05,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:05,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:07,169 INFO L124 PetriNetUnfolderBase]: 5554/9571 cut-off events. [2023-11-06 23:05:07,170 INFO L125 PetriNetUnfolderBase]: For 18424/19622 co-relation queries the response was YES. [2023-11-06 23:05:07,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32619 conditions, 9571 events. 5554/9571 cut-off events. For 18424/19622 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 70239 event pairs, 1444 based on Foata normal form. 378/9733 useless extension candidates. Maximal degree in co-relation 11725. Up to 2714 conditions per place. [2023-11-06 23:05:07,275 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 109 selfloop transitions, 50 changer transitions 0/174 dead transitions. [2023-11-06 23:05:07,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 174 transitions, 1267 flow [2023-11-06 23:05:07,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:07,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:07,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 673 transitions. [2023-11-06 23:05:07,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52578125 [2023-11-06 23:05:07,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 673 transitions. [2023-11-06 23:05:07,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 673 transitions. [2023-11-06 23:05:07,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:07,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 673 transitions. [2023-11-06 23:05:07,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 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 23:05:07,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:07,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:07,288 INFO L175 Difference]: Start difference. First operand has 60 places, 98 transitions, 567 flow. Second operand 5 states and 673 transitions. [2023-11-06 23:05:07,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 174 transitions, 1267 flow [2023-11-06 23:05:07,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 174 transitions, 1267 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 23:05:07,353 INFO L231 Difference]: Finished difference. Result has 67 places, 129 transitions, 1034 flow [2023-11-06 23:05:07,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=567, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1034, PETRI_PLACES=67, PETRI_TRANSITIONS=129} [2023-11-06 23:05:07,356 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2023-11-06 23:05:07,357 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 129 transitions, 1034 flow [2023-11-06 23:05:07,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:07,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:07,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:07,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:05:07,359 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 2 more)] === [2023-11-06 23:05:07,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:07,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1289887910, now seen corresponding path program 6 times [2023-11-06 23:05:07,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969240281] [2023-11-06 23:05:07,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:07,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:07,566 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 23:05:07,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:07,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969240281] [2023-11-06 23:05:07,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969240281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:07,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:07,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:07,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171518302] [2023-11-06 23:05:07,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:07,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:07,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:07,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:07,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 129 transitions, 1034 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:07,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:07,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:07,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:08,919 INFO L124 PetriNetUnfolderBase]: 5710/9827 cut-off events. [2023-11-06 23:05:08,919 INFO L125 PetriNetUnfolderBase]: For 37893/40191 co-relation queries the response was YES. [2023-11-06 23:05:08,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39846 conditions, 9827 events. 5710/9827 cut-off events. For 37893/40191 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 73231 event pairs, 744 based on Foata normal form. 882/10409 useless extension candidates. Maximal degree in co-relation 15471. Up to 3247 conditions per place. [2023-11-06 23:05:09,040 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 79 selfloop transitions, 99 changer transitions 1/194 dead transitions. [2023-11-06 23:05:09,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 194 transitions, 1642 flow [2023-11-06 23:05:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:09,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 23:05:09,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 933 transitions. [2023-11-06 23:05:09,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206473214285714 [2023-11-06 23:05:09,046 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 933 transitions. [2023-11-06 23:05:09,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 933 transitions. [2023-11-06 23:05:09,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:09,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 933 transitions. [2023-11-06 23:05:09,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.28571428571428) internal successors, (933), 7 states have internal predecessors, (933), 0 states have call successors, (0), 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 23:05:09,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 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 23:05:09,055 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 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 23:05:09,055 INFO L175 Difference]: Start difference. First operand has 67 places, 129 transitions, 1034 flow. Second operand 7 states and 933 transitions. [2023-11-06 23:05:09,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 194 transitions, 1642 flow [2023-11-06 23:05:09,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 194 transitions, 1628 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-06 23:05:09,148 INFO L231 Difference]: Finished difference. Result has 73 places, 137 transitions, 1332 flow [2023-11-06 23:05:09,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1332, PETRI_PLACES=73, PETRI_TRANSITIONS=137} [2023-11-06 23:05:09,149 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-11-06 23:05:09,150 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 137 transitions, 1332 flow [2023-11-06 23:05:09,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:09,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:09,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:05:09,152 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 2 more)] === [2023-11-06 23:05:09,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:09,152 INFO L85 PathProgramCache]: Analyzing trace with hash -433327788, now seen corresponding path program 7 times [2023-11-06 23:05:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:09,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049312474] [2023-11-06 23:05:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:09,274 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 23:05:09,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:09,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049312474] [2023-11-06 23:05:09,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049312474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:09,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138234827] [2023-11-06 23:05:09,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:09,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:09,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:09,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:09,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 137 transitions, 1332 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:09,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:09,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:10,507 INFO L124 PetriNetUnfolderBase]: 5559/9747 cut-off events. [2023-11-06 23:05:10,507 INFO L125 PetriNetUnfolderBase]: For 51839/53709 co-relation queries the response was YES. [2023-11-06 23:05:10,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43470 conditions, 9747 events. 5559/9747 cut-off events. For 51839/53709 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 72906 event pairs, 1434 based on Foata normal form. 728/10283 useless extension candidates. Maximal degree in co-relation 13495. Up to 2714 conditions per place. [2023-11-06 23:05:10,686 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 111 selfloop transitions, 67 changer transitions 0/193 dead transitions. [2023-11-06 23:05:10,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 193 transitions, 1994 flow [2023-11-06 23:05:10,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:10,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 675 transitions. [2023-11-06 23:05:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52734375 [2023-11-06 23:05:10,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 675 transitions. [2023-11-06 23:05:10,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 675 transitions. [2023-11-06 23:05:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:10,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 675 transitions. [2023-11-06 23:05:10,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 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 23:05:10,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:10,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:10,698 INFO L175 Difference]: Start difference. First operand has 73 places, 137 transitions, 1332 flow. Second operand 5 states and 675 transitions. [2023-11-06 23:05:10,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 193 transitions, 1994 flow [2023-11-06 23:05:10,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 193 transitions, 1811 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 23:05:10,801 INFO L231 Difference]: Finished difference. Result has 75 places, 147 transitions, 1487 flow [2023-11-06 23:05:10,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1169, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1487, PETRI_PLACES=75, PETRI_TRANSITIONS=147} [2023-11-06 23:05:10,802 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 28 predicate places. [2023-11-06 23:05:10,802 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 147 transitions, 1487 flow [2023-11-06 23:05:10,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:10,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:10,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:05:10,804 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 2 more)] === [2023-11-06 23:05:10,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1096931974, now seen corresponding path program 8 times [2023-11-06 23:05:10,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:10,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756356630] [2023-11-06 23:05:10,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:10,924 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 23:05:10,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:10,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756356630] [2023-11-06 23:05:10,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756356630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:10,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657251504] [2023-11-06 23:05:10,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:10,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:10,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:10,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:10,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:10,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 147 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:10,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:10,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:10,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:12,510 INFO L124 PetriNetUnfolderBase]: 5043/9008 cut-off events. [2023-11-06 23:05:12,510 INFO L125 PetriNetUnfolderBase]: For 49929/51985 co-relation queries the response was YES. [2023-11-06 23:05:12,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40876 conditions, 9008 events. 5043/9008 cut-off events. For 49929/51985 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 68229 event pairs, 1415 based on Foata normal form. 680/9486 useless extension candidates. Maximal degree in co-relation 11863. Up to 2660 conditions per place. [2023-11-06 23:05:12,609 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 109 selfloop transitions, 78 changer transitions 5/207 dead transitions. [2023-11-06 23:05:12,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 207 transitions, 2244 flow [2023-11-06 23:05:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-11-06 23:05:12,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52890625 [2023-11-06 23:05:12,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-11-06 23:05:12,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-11-06 23:05:12,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:12,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-11-06 23:05:12,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 0 states have call successors, (0), 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 23:05:12,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:12,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:12,622 INFO L175 Difference]: Start difference. First operand has 75 places, 147 transitions, 1487 flow. Second operand 5 states and 677 transitions. [2023-11-06 23:05:12,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 207 transitions, 2244 flow [2023-11-06 23:05:12,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 207 transitions, 2136 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 23:05:12,705 INFO L231 Difference]: Finished difference. Result has 78 places, 159 transitions, 1795 flow [2023-11-06 23:05:12,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1386, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1795, PETRI_PLACES=78, PETRI_TRANSITIONS=159} [2023-11-06 23:05:12,707 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-11-06 23:05:12,707 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 159 transitions, 1795 flow [2023-11-06 23:05:12,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:12,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:12,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:12,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:05:12,708 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 2 more)] === [2023-11-06 23:05:12,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1006458862, now seen corresponding path program 9 times [2023-11-06 23:05:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943625703] [2023-11-06 23:05:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:12,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:12,821 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 23:05:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:12,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943625703] [2023-11-06 23:05:12,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943625703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:12,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:12,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:12,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133638938] [2023-11-06 23:05:12,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:12,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:12,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:12,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:12,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 159 transitions, 1795 flow. Second operand has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:12,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:12,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:12,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:13,651 INFO L124 PetriNetUnfolderBase]: 2747/5225 cut-off events. [2023-11-06 23:05:13,651 INFO L125 PetriNetUnfolderBase]: For 35804/37490 co-relation queries the response was YES. [2023-11-06 23:05:13,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24572 conditions, 5225 events. 2747/5225 cut-off events. For 35804/37490 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 37658 event pairs, 532 based on Foata normal form. 874/6023 useless extension candidates. Maximal degree in co-relation 9082. Up to 1650 conditions per place. [2023-11-06 23:05:13,694 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 104 selfloop transitions, 84 changer transitions 0/199 dead transitions. [2023-11-06 23:05:13,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 199 transitions, 2395 flow [2023-11-06 23:05:13,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:13,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 23:05:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 671 transitions. [2023-11-06 23:05:13,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52421875 [2023-11-06 23:05:13,699 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 671 transitions. [2023-11-06 23:05:13,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 671 transitions. [2023-11-06 23:05:13,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:13,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 671 transitions. [2023-11-06 23:05:13,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 134.2) internal successors, (671), 5 states have internal predecessors, (671), 0 states have call successors, (0), 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 23:05:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:13,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 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 23:05:13,707 INFO L175 Difference]: Start difference. First operand has 78 places, 159 transitions, 1795 flow. Second operand 5 states and 671 transitions. [2023-11-06 23:05:13,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 199 transitions, 2395 flow [2023-11-06 23:05:13,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 199 transitions, 2293 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 23:05:13,766 INFO L231 Difference]: Finished difference. Result has 79 places, 162 transitions, 2031 flow [2023-11-06 23:05:13,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2031, PETRI_PLACES=79, PETRI_TRANSITIONS=162} [2023-11-06 23:05:13,767 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 32 predicate places. [2023-11-06 23:05:13,768 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 162 transitions, 2031 flow [2023-11-06 23:05:13,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 122.8) internal successors, (614), 5 states have internal predecessors, (614), 0 states have call successors, (0), 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 23:05:13,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:13,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:13,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:05:13,769 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 2 more)] === [2023-11-06 23:05:13,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:13,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1846303752, now seen corresponding path program 10 times [2023-11-06 23:05:13,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348745672] [2023-11-06 23:05:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:13,933 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 23:05:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348745672] [2023-11-06 23:05:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348745672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:13,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:13,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:05:13,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385439499] [2023-11-06 23:05:13,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:13,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:05:13,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:13,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 162 transitions, 2031 flow. Second operand has 6 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 23:05:13,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:13,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:13,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:14,822 INFO L124 PetriNetUnfolderBase]: 2750/5220 cut-off events. [2023-11-06 23:05:14,822 INFO L125 PetriNetUnfolderBase]: For 39417/41599 co-relation queries the response was YES. [2023-11-06 23:05:14,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25334 conditions, 5220 events. 2750/5220 cut-off events. For 39417/41599 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 37800 event pairs, 385 based on Foata normal form. 968/6061 useless extension candidates. Maximal degree in co-relation 8734. Up to 1534 conditions per place. [2023-11-06 23:05:14,919 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 92 selfloop transitions, 119 changer transitions 2/224 dead transitions. [2023-11-06 23:05:14,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 224 transitions, 2762 flow [2023-11-06 23:05:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:05:14,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 812 transitions. [2023-11-06 23:05:14,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2023-11-06 23:05:14,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 812 transitions. [2023-11-06 23:05:14,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 812 transitions. [2023-11-06 23:05:14,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:14,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 812 transitions. [2023-11-06 23:05:14,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 0 states have call successors, (0), 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 23:05:14,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:14,932 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 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 23:05:14,933 INFO L175 Difference]: Start difference. First operand has 79 places, 162 transitions, 2031 flow. Second operand 6 states and 812 transitions. [2023-11-06 23:05:14,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 224 transitions, 2762 flow [2023-11-06 23:05:14,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 224 transitions, 2667 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:05:14,972 INFO L231 Difference]: Finished difference. Result has 83 places, 166 transitions, 2293 flow [2023-11-06 23:05:14,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2293, PETRI_PLACES=83, PETRI_TRANSITIONS=166} [2023-11-06 23:05:14,974 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 36 predicate places. [2023-11-06 23:05:14,974 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 166 transitions, 2293 flow [2023-11-06 23:05:14,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 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 23:05:14,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:14,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:14,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:05:14,975 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 2 more)] === [2023-11-06 23:05:14,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:14,976 INFO L85 PathProgramCache]: Analyzing trace with hash -330369574, now seen corresponding path program 11 times [2023-11-06 23:05:14,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:14,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829209973] [2023-11-06 23:05:14,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,180 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 23:05:15,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829209973] [2023-11-06 23:05:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829209973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:15,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:15,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935363342] [2023-11-06 23:05:15,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:15,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:15,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:15,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:15,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:15,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 166 transitions, 2293 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:15,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:15,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:15,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:16,227 INFO L124 PetriNetUnfolderBase]: 2817/5427 cut-off events. [2023-11-06 23:05:16,227 INFO L125 PetriNetUnfolderBase]: For 48185/50401 co-relation queries the response was YES. [2023-11-06 23:05:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27421 conditions, 5427 events. 2817/5427 cut-off events. For 48185/50401 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40148 event pairs, 342 based on Foata normal form. 1004/6274 useless extension candidates. Maximal degree in co-relation 9606. Up to 1507 conditions per place. [2023-11-06 23:05:16,279 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 107 selfloop transitions, 128 changer transitions 1/247 dead transitions. [2023-11-06 23:05:16,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 247 transitions, 3207 flow [2023-11-06 23:05:16,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:05:16,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:05:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1071 transitions. [2023-11-06 23:05:16,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52294921875 [2023-11-06 23:05:16,285 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1071 transitions. [2023-11-06 23:05:16,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1071 transitions. [2023-11-06 23:05:16,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:16,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1071 transitions. [2023-11-06 23:05:16,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.875) internal successors, (1071), 8 states have internal predecessors, (1071), 0 states have call successors, (0), 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 23:05:16,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:16,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:16,296 INFO L175 Difference]: Start difference. First operand has 83 places, 166 transitions, 2293 flow. Second operand 8 states and 1071 transitions. [2023-11-06 23:05:16,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 247 transitions, 3207 flow [2023-11-06 23:05:16,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 247 transitions, 2984 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:16,355 INFO L231 Difference]: Finished difference. Result has 87 places, 175 transitions, 2545 flow [2023-11-06 23:05:16,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2545, PETRI_PLACES=87, PETRI_TRANSITIONS=175} [2023-11-06 23:05:16,357 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 40 predicate places. [2023-11-06 23:05:16,357 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 175 transitions, 2545 flow [2023-11-06 23:05:16,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:16,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:16,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:16,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:05:16,358 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 2 more)] === [2023-11-06 23:05:16,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:16,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1007184456, now seen corresponding path program 12 times [2023-11-06 23:05:16,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:16,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945463828] [2023-11-06 23:05:16,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,549 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 23:05:16,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:16,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945463828] [2023-11-06 23:05:16,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945463828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:16,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:16,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:16,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689070121] [2023-11-06 23:05:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:16,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:16,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:16,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:16,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 175 transitions, 2545 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:16,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:16,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:16,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:17,741 INFO L124 PetriNetUnfolderBase]: 2677/5319 cut-off events. [2023-11-06 23:05:17,742 INFO L125 PetriNetUnfolderBase]: For 48907/51031 co-relation queries the response was YES. [2023-11-06 23:05:17,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27035 conditions, 5319 events. 2677/5319 cut-off events. For 48907/51031 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 40388 event pairs, 297 based on Foata normal form. 998/6178 useless extension candidates. Maximal degree in co-relation 10100. Up to 1466 conditions per place. [2023-11-06 23:05:17,783 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 106 selfloop transitions, 134 changer transitions 16/267 dead transitions. [2023-11-06 23:05:17,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 267 transitions, 3648 flow [2023-11-06 23:05:17,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:05:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:05:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1077 transitions. [2023-11-06 23:05:17,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52587890625 [2023-11-06 23:05:17,790 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1077 transitions. [2023-11-06 23:05:17,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1077 transitions. [2023-11-06 23:05:17,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:17,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1077 transitions. [2023-11-06 23:05:17,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.625) internal successors, (1077), 8 states have internal predecessors, (1077), 0 states have call successors, (0), 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 23:05:17,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:17,802 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:17,802 INFO L175 Difference]: Start difference. First operand has 87 places, 175 transitions, 2545 flow. Second operand 8 states and 1077 transitions. [2023-11-06 23:05:17,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 267 transitions, 3648 flow [2023-11-06 23:05:17,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 267 transitions, 3467 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:05:17,860 INFO L231 Difference]: Finished difference. Result has 93 places, 181 transitions, 2781 flow [2023-11-06 23:05:17,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2781, PETRI_PLACES=93, PETRI_TRANSITIONS=181} [2023-11-06 23:05:17,861 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 46 predicate places. [2023-11-06 23:05:17,861 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 181 transitions, 2781 flow [2023-11-06 23:05:17,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:17,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:17,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:17,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 23:05:17,863 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:17,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1456989452, now seen corresponding path program 13 times [2023-11-06 23:05:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198741357] [2023-11-06 23:05:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:17,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:18,046 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 23:05:18,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:18,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198741357] [2023-11-06 23:05:18,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198741357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:18,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:18,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:18,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100456329] [2023-11-06 23:05:18,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:18,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:18,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:18,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:18,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:18,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:18,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 181 transitions, 2781 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:18,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:18,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:18,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:19,092 INFO L124 PetriNetUnfolderBase]: 1841/3784 cut-off events. [2023-11-06 23:05:19,092 INFO L125 PetriNetUnfolderBase]: For 38787/40905 co-relation queries the response was YES. [2023-11-06 23:05:19,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20616 conditions, 3784 events. 1841/3784 cut-off events. For 38787/40905 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 27681 event pairs, 182 based on Foata normal form. 1000/4736 useless extension candidates. Maximal degree in co-relation 9612. Up to 924 conditions per place. [2023-11-06 23:05:19,127 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 95 selfloop transitions, 129 changer transitions 29/264 dead transitions. [2023-11-06 23:05:19,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 264 transitions, 3971 flow [2023-11-06 23:05:19,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:05:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 23:05:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1065 transitions. [2023-11-06 23:05:19,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52001953125 [2023-11-06 23:05:19,132 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1065 transitions. [2023-11-06 23:05:19,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1065 transitions. [2023-11-06 23:05:19,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:19,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1065 transitions. [2023-11-06 23:05:19,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.125) internal successors, (1065), 8 states have internal predecessors, (1065), 0 states have call successors, (0), 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 23:05:19,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:19,141 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 256.0) internal successors, (2304), 9 states have internal predecessors, (2304), 0 states have call successors, (0), 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 23:05:19,141 INFO L175 Difference]: Start difference. First operand has 93 places, 181 transitions, 2781 flow. Second operand 8 states and 1065 transitions. [2023-11-06 23:05:19,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 264 transitions, 3971 flow [2023-11-06 23:05:19,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 264 transitions, 3719 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-06 23:05:19,190 INFO L231 Difference]: Finished difference. Result has 97 places, 174 transitions, 2754 flow [2023-11-06 23:05:19,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2754, PETRI_PLACES=97, PETRI_TRANSITIONS=174} [2023-11-06 23:05:19,191 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 50 predicate places. [2023-11-06 23:05:19,191 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 174 transitions, 2754 flow [2023-11-06 23:05:19,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 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 23:05:19,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:19,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:19,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:05:19,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:19,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:19,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1487017656, now seen corresponding path program 14 times [2023-11-06 23:05:19,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860827243] [2023-11-06 23:05:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:19,392 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 23:05:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860827243] [2023-11-06 23:05:19,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860827243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:19,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:19,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:05:19,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387217597] [2023-11-06 23:05:19,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:19,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:05:19,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:19,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:05:19,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:05:19,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:19,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 174 transitions, 2754 flow. Second operand has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 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 23:05:19,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:19,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:19,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:20,257 INFO L124 PetriNetUnfolderBase]: 1549/3274 cut-off events. [2023-11-06 23:05:20,258 INFO L125 PetriNetUnfolderBase]: For 30906/31904 co-relation queries the response was YES. [2023-11-06 23:05:20,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17601 conditions, 3274 events. 1549/3274 cut-off events. For 30906/31904 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23724 event pairs, 134 based on Foata normal form. 502/3726 useless extension candidates. Maximal degree in co-relation 8382. Up to 806 conditions per place. [2023-11-06 23:05:20,285 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 80 selfloop transitions, 129 changer transitions 28/248 dead transitions. [2023-11-06 23:05:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 248 transitions, 3722 flow [2023-11-06 23:05:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:05:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 23:05:20,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1179 transitions. [2023-11-06 23:05:20,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2023-11-06 23:05:20,292 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1179 transitions. [2023-11-06 23:05:20,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1179 transitions. [2023-11-06 23:05:20,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:20,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1179 transitions. [2023-11-06 23:05:20,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 131.0) internal successors, (1179), 9 states have internal predecessors, (1179), 0 states have call successors, (0), 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 23:05:20,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 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 23:05:20,303 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 256.0) internal successors, (2560), 10 states have internal predecessors, (2560), 0 states have call successors, (0), 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 23:05:20,303 INFO L175 Difference]: Start difference. First operand has 97 places, 174 transitions, 2754 flow. Second operand 9 states and 1179 transitions. [2023-11-06 23:05:20,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 248 transitions, 3722 flow [2023-11-06 23:05:20,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 248 transitions, 3601 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 23:05:20,367 INFO L231 Difference]: Finished difference. Result has 103 places, 163 transitions, 2681 flow [2023-11-06 23:05:20,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2644, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2681, PETRI_PLACES=103, PETRI_TRANSITIONS=163} [2023-11-06 23:05:20,369 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 56 predicate places. [2023-11-06 23:05:20,369 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 163 transitions, 2681 flow [2023-11-06 23:05:20,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.625) internal successors, (965), 8 states have internal predecessors, (965), 0 states have call successors, (0), 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 23:05:20,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:20,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:20,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:05:20,380 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:20,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:20,380 INFO L85 PathProgramCache]: Analyzing trace with hash -215453378, now seen corresponding path program 15 times [2023-11-06 23:05:20,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:20,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868522172] [2023-11-06 23:05:20,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,550 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 23:05:20,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:20,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868522172] [2023-11-06 23:05:20,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868522172] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:20,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:20,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:05:20,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091293716] [2023-11-06 23:05:20,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:20,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:05:20,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:20,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:05:20,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:20,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:20,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 163 transitions, 2681 flow. Second operand has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:20,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:20,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:20,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:21,563 INFO L124 PetriNetUnfolderBase]: 1396/2999 cut-off events. [2023-11-06 23:05:21,564 INFO L125 PetriNetUnfolderBase]: For 32253/33249 co-relation queries the response was YES. [2023-11-06 23:05:21,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16586 conditions, 2999 events. 1396/2999 cut-off events. For 32253/33249 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21475 event pairs, 133 based on Foata normal form. 434/3387 useless extension candidates. Maximal degree in co-relation 7728. Up to 735 conditions per place. [2023-11-06 23:05:21,592 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 88 selfloop transitions, 132 changer transitions 16/247 dead transitions. [2023-11-06 23:05:21,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 247 transitions, 3669 flow [2023-11-06 23:05:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:05:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:05:21,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1550 transitions. [2023-11-06 23:05:21,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045572916666666 [2023-11-06 23:05:21,599 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1550 transitions. [2023-11-06 23:05:21,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1550 transitions. [2023-11-06 23:05:21,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:21,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1550 transitions. [2023-11-06 23:05:21,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.16666666666666) internal successors, (1550), 12 states have internal predecessors, (1550), 0 states have call successors, (0), 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 23:05:21,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:21,611 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:21,611 INFO L175 Difference]: Start difference. First operand has 103 places, 163 transitions, 2681 flow. Second operand 12 states and 1550 transitions. [2023-11-06 23:05:21,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 247 transitions, 3669 flow [2023-11-06 23:05:21,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 247 transitions, 3377 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:21,676 INFO L231 Difference]: Finished difference. Result has 110 places, 166 transitions, 2674 flow [2023-11-06 23:05:21,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2674, PETRI_PLACES=110, PETRI_TRANSITIONS=166} [2023-11-06 23:05:21,677 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 63 predicate places. [2023-11-06 23:05:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 166 transitions, 2674 flow [2023-11-06 23:05:21,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:21,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:21,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:05:21,678 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:21,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -956634896, now seen corresponding path program 16 times [2023-11-06 23:05:21,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:21,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587534462] [2023-11-06 23:05:21,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:21,829 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 23:05:21,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:21,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587534462] [2023-11-06 23:05:21,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587534462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:21,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:21,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:05:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661826289] [2023-11-06 23:05:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:21,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:05:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:05:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:21,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:21,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 166 transitions, 2674 flow. Second operand has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:21,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:21,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:21,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:22,761 INFO L124 PetriNetUnfolderBase]: 1397/3023 cut-off events. [2023-11-06 23:05:22,761 INFO L125 PetriNetUnfolderBase]: For 34558/35504 co-relation queries the response was YES. [2023-11-06 23:05:22,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16789 conditions, 3023 events. 1397/3023 cut-off events. For 34558/35504 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21906 event pairs, 144 based on Foata normal form. 458/3433 useless extension candidates. Maximal degree in co-relation 7800. Up to 737 conditions per place. [2023-11-06 23:05:22,784 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 75 selfloop transitions, 124 changer transitions 40/250 dead transitions. [2023-11-06 23:05:22,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 250 transitions, 3733 flow [2023-11-06 23:05:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:05:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:05:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1549 transitions. [2023-11-06 23:05:22,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5042317708333334 [2023-11-06 23:05:22,789 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1549 transitions. [2023-11-06 23:05:22,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1549 transitions. [2023-11-06 23:05:22,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:22,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1549 transitions. [2023-11-06 23:05:22,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.08333333333334) internal successors, (1549), 12 states have internal predecessors, (1549), 0 states have call successors, (0), 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 23:05:22,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:22,800 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:22,800 INFO L175 Difference]: Start difference. First operand has 110 places, 166 transitions, 2674 flow. Second operand 12 states and 1549 transitions. [2023-11-06 23:05:22,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 250 transitions, 3733 flow [2023-11-06 23:05:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 250 transitions, 3549 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:22,866 INFO L231 Difference]: Finished difference. Result has 116 places, 158 transitions, 2622 flow [2023-11-06 23:05:22,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2622, PETRI_PLACES=116, PETRI_TRANSITIONS=158} [2023-11-06 23:05:22,867 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 69 predicate places. [2023-11-06 23:05:22,867 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 158 transitions, 2622 flow [2023-11-06 23:05:22,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:22,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:22,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:22,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:05:22,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:22,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:22,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1253177686, now seen corresponding path program 17 times [2023-11-06 23:05:22,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:22,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017788455] [2023-11-06 23:05:22,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:22,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,024 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 23:05:23,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:23,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017788455] [2023-11-06 23:05:23,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017788455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:23,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:23,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:05:23,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500953721] [2023-11-06 23:05:23,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:23,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:05:23,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:23,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:05:23,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:23,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:23,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 158 transitions, 2622 flow. Second operand has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:23,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:23,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:23,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:23,968 INFO L124 PetriNetUnfolderBase]: 1299/2833 cut-off events. [2023-11-06 23:05:23,968 INFO L125 PetriNetUnfolderBase]: For 35602/36566 co-relation queries the response was YES. [2023-11-06 23:05:23,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16248 conditions, 2833 events. 1299/2833 cut-off events. For 35602/36566 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 20348 event pairs, 138 based on Foata normal form. 466/3255 useless extension candidates. Maximal degree in co-relation 8943. Up to 716 conditions per place. [2023-11-06 23:05:23,997 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 82 selfloop transitions, 124 changer transitions 30/246 dead transitions. [2023-11-06 23:05:23,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 246 transitions, 3686 flow [2023-11-06 23:05:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:05:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:05:24,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1553 transitions. [2023-11-06 23:05:24,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055338541666666 [2023-11-06 23:05:24,001 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1553 transitions. [2023-11-06 23:05:24,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1553 transitions. [2023-11-06 23:05:24,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:24,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1553 transitions. [2023-11-06 23:05:24,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.41666666666666) internal successors, (1553), 12 states have internal predecessors, (1553), 0 states have call successors, (0), 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 23:05:24,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:24,012 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:24,012 INFO L175 Difference]: Start difference. First operand has 116 places, 158 transitions, 2622 flow. Second operand 12 states and 1553 transitions. [2023-11-06 23:05:24,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 246 transitions, 3686 flow [2023-11-06 23:05:24,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 246 transitions, 3475 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-06 23:05:24,077 INFO L231 Difference]: Finished difference. Result has 118 places, 156 transitions, 2631 flow [2023-11-06 23:05:24,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=2427, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2631, PETRI_PLACES=118, PETRI_TRANSITIONS=156} [2023-11-06 23:05:24,078 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 71 predicate places. [2023-11-06 23:05:24,078 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 156 transitions, 2631 flow [2023-11-06 23:05:24,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:24,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:24,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:24,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:05:24,079 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-11-06 23:05:24,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:24,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1324582096, now seen corresponding path program 18 times [2023-11-06 23:05:24,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:24,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779884636] [2023-11-06 23:05:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:24,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,269 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 23:05:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779884636] [2023-11-06 23:05:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779884636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:24,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:24,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:05:24,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18517741] [2023-11-06 23:05:24,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:24,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-06 23:05:24,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:24,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-06 23:05:24,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:24,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 256 [2023-11-06 23:05:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 156 transitions, 2631 flow. Second operand has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:24,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 256 [2023-11-06 23:05:24,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:24,691 INFO L124 PetriNetUnfolderBase]: 274/637 cut-off events. [2023-11-06 23:05:24,691 INFO L125 PetriNetUnfolderBase]: For 9544/9802 co-relation queries the response was YES. [2023-11-06 23:05:24,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4618 conditions, 637 events. 274/637 cut-off events. For 9544/9802 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3750 event pairs, 6 based on Foata normal form. 198/835 useless extension candidates. Maximal degree in co-relation 3786. Up to 163 conditions per place. [2023-11-06 23:05:24,694 INFO L140 encePairwiseOnDemand]: 248/256 looper letters, 0 selfloop transitions, 0 changer transitions 109/109 dead transitions. [2023-11-06 23:05:24,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 109 transitions, 1823 flow [2023-11-06 23:05:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 23:05:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 23:05:24,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1484 transitions. [2023-11-06 23:05:24,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830729166666667 [2023-11-06 23:05:24,697 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1484 transitions. [2023-11-06 23:05:24,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1484 transitions. [2023-11-06 23:05:24,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:24,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1484 transitions. [2023-11-06 23:05:24,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 123.66666666666667) internal successors, (1484), 12 states have internal predecessors, (1484), 0 states have call successors, (0), 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 23:05:24,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:24,707 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 256.0) internal successors, (3328), 13 states have internal predecessors, (3328), 0 states have call successors, (0), 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 23:05:24,707 INFO L175 Difference]: Start difference. First operand has 118 places, 156 transitions, 2631 flow. Second operand 12 states and 1484 transitions. [2023-11-06 23:05:24,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 109 transitions, 1823 flow [2023-11-06 23:05:24,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 109 transitions, 1648 flow, removed 16 selfloop flow, removed 13 redundant places. [2023-11-06 23:05:24,732 INFO L231 Difference]: Finished difference. Result has 101 places, 0 transitions, 0 flow [2023-11-06 23:05:24,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=1206, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=101, PETRI_TRANSITIONS=0} [2023-11-06 23:05:24,733 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 54 predicate places. [2023-11-06 23:05:24,733 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 0 transitions, 0 flow [2023-11-06 23:05:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 120.22222222222223) internal successors, (1082), 9 states have internal predecessors, (1082), 0 states have call successors, (0), 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 23:05:24,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-06 23:05:24,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-06 23:05:24,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-06 23:05:24,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-06 23:05:24,738 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-06 23:05:24,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:05:24,739 INFO L445 BasicCegarLoop]: Path program histogram: [18] [2023-11-06 23:05:24,743 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 23:05:24,743 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:05:24,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:05:24 BasicIcfg [2023-11-06 23:05:24,747 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:05:24,748 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:05:24,748 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:05:24,748 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:05:24,749 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:04:48" (3/4) ... [2023-11-06 23:05:24,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:05:24,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 23:05:24,756 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 23:05:24,756 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 23:05:24,756 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-11-06 23:05:24,763 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-06 23:05:24,764 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:05:24,764 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:05:24,765 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:05:24,828 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:05:24,829 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:05:24,829 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:05:24,830 INFO L158 Benchmark]: Toolchain (without parser) took 37323.09ms. Allocated memory was 127.9MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 92.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 195.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:24,830 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory was 75.8MB in the beginning and 75.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:24,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.50ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 80.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:05:24,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.08ms. Allocated memory is still 127.9MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:05:24,832 INFO L158 Benchmark]: Boogie Preprocessor took 33.74ms. Allocated memory is still 127.9MB. Free memory was 78.3MB in the beginning and 76.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:24,832 INFO L158 Benchmark]: RCFGBuilder took 755.15ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 76.9MB in the beginning and 146.4MB in the end (delta: -69.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:24,833 INFO L158 Benchmark]: TraceAbstraction took 36096.40ms. Allocated memory was 178.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 145.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2023-11-06 23:05:24,833 INFO L158 Benchmark]: Witness Printer took 81.42ms. Allocated memory is still 1.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 23:05:24,836 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 127.9MB. Free memory was 75.8MB in the beginning and 75.6MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.50ms. Allocated memory is still 127.9MB. Free memory was 92.6MB in the beginning and 80.7MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.08ms. Allocated memory is still 127.9MB. Free memory was 80.7MB in the beginning and 78.7MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.74ms. Allocated memory is still 127.9MB. Free memory was 78.3MB in the beginning and 76.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 755.15ms. Allocated memory was 127.9MB in the beginning and 178.3MB in the end (delta: 50.3MB). Free memory was 76.9MB in the beginning and 146.4MB in the end (delta: -69.5MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * TraceAbstraction took 36096.40ms. Allocated memory was 178.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 145.6MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 81.42ms. Allocated memory is still 1.7GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 140 PlacesBefore, 47 PlacesAfterwards, 129 TransitionsBefore, 34 TransitionsAfterwards, 1302 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, 7202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2636, independent: 2371, independent conditional: 0, independent unconditional: 2371, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 656, independent: 632, independent conditional: 0, independent unconditional: 632, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2636, independent: 1739, independent conditional: 0, independent unconditional: 1739, dependent: 241, dependent conditional: 0, dependent unconditional: 241, unknown: 656, unknown conditional: 0, unknown unconditional: 656] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 133, Positive conditional cache size: 0, Positive unconditional cache size: 133, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 146]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 178 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.9s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 23.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1333 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1225 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 4.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 82 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5249 IncrementalHoareTripleChecker+Invalid, 5602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 47 mSDtfsCounter, 5249 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2781occurred in iteration=12, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 594 ConstructedInterpolants, 0 QuantifiedInterpolants, 2122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 23:05:24,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_93be15fb-82cb-4cc6-b48f-bbc0c66a6969/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE