./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro --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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:49:03,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:49:03,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:49:03,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:49:03,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:49:03,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:49:03,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:49:03,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:49:03,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:49:03,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:49:03,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:49:03,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:49:03,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:49:03,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:49:03,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:49:03,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:49:03,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:49:03,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:49:03,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:49:03,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:49:03,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:49:03,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:49:03,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:49:03,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:49:03,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:49:03,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:49:03,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:49:03,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:49:03,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:49:03,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:49:03,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:49:03,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:49:03,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:49:03,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:49:03,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:49:03,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:49:03,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:49:03,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:49:03,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:49:03,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:49:03,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:49:03,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:49:03,171 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:49:03,171 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:49:03,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:49:03,171 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:49:03,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:49:03,172 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:49:03,173 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:49:03,173 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:49:03,174 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:49:03,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:49:03,174 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:49:03,174 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:49:03,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:49:03,182 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:49:03,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:49:03,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:49:03,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:49:03,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:49:03,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:49:03,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:49:03,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:49:03,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:49:03,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:49:03,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:49:03,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:03,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:49:03,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:49:03,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:49:03,186 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:49:03,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:49:03,187 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:49:03,187 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:49:03,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:49:03,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-18 20:49:03,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:49:03,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:49:03,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:49:03,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:49:03,608 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:49:03,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-18 20:49:03,722 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/data/61d832b55/40a0f9094be749b5ab22ccd78b5c2938/FLAG3418830a2 [2022-11-18 20:49:04,343 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:49:04,344 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-18 20:49:04,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/data/61d832b55/40a0f9094be749b5ab22ccd78b5c2938/FLAG3418830a2 [2022-11-18 20:49:04,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/data/61d832b55/40a0f9094be749b5ab22ccd78b5c2938 [2022-11-18 20:49:04,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:49:04,683 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:49:04,685 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:04,685 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:49:04,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:49:04,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:04" (1/1) ... [2022-11-18 20:49:04,692 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24da57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:04, skipping insertion in model container [2022-11-18 20:49:04,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:04" (1/1) ... [2022-11-18 20:49:04,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:49:04,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:49:05,075 WARN L234 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_27d4159f-e018-402c-b85d-937780c7ebef/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-18 20:49:05,087 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:05,097 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:49:05,147 WARN L234 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_27d4159f-e018-402c-b85d-937780c7ebef/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-18 20:49:05,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:05,170 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:49:05,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05 WrapperNode [2022-11-18 20:49:05,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:05,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:05,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:49:05,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:49:05,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,297 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-18 20:49:05,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:05,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:49:05,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:49:05,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:49:05,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,394 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:49:05,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:49:05,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:49:05,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:49:05,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (1/1) ... [2022-11-18 20:49:05,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:05,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:05,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:49:05,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:49:05,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:49:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:49:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:49:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:49:05,511 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:49:05,511 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:49:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:49:05,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:49:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:49:05,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:49:05,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:49:05,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:49:05,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:49:05,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:49:05,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:49:05,515 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:49:05,691 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:49:05,694 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:49:06,993 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:49:07,021 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:49:07,023 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 20:49:07,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:07 BoogieIcfgContainer [2022-11-18 20:49:07,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:49:07,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:49:07,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:49:07,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:49:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:04" (1/3) ... [2022-11-18 20:49:07,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7052e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:07, skipping insertion in model container [2022-11-18 20:49:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:05" (2/3) ... [2022-11-18 20:49:07,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7052e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:07, skipping insertion in model container [2022-11-18 20:49:07,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:07" (3/3) ... [2022-11-18 20:49:07,048 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-18 20:49:07,059 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:49:07,073 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:49:07,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:49:07,074 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:49:07,284 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:49:07,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-18 20:49:07,883 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-18 20:49:07,884 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:49:07,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-18 20:49:07,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-18 20:49:07,940 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-18 20:49:07,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:49:07,978 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;@1e17c1d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:49:07,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 20:49:08,321 INFO L130 PetriNetUnfolder]: 73/746 cut-off events. [2022-11-18 20:49:08,321 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:49:08,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:08,324 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:08,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:08,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1350279025, now seen corresponding path program 1 times [2022-11-18 20:49:08,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:08,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636738966] [2022-11-18 20:49:08,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:08,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:08,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:08,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:08,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636738966] [2022-11-18 20:49:08,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636738966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:08,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:08,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:49:08,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519836948] [2022-11-18 20:49:08,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:08,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:49:08,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:49:08,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:49:08,935 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 761 [2022-11-18 20:49:08,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 747 transitions, 1512 flow. Second operand has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:08,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:08,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 761 [2022-11-18 20:49:08,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:09,385 INFO L130 PetriNetUnfolder]: 36/710 cut-off events. [2022-11-18 20:49:09,385 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-18 20:49:09,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 710 events. 36/710 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2657 event pairs, 0 based on Foata normal form. 60/703 useless extension candidates. Maximal degree in co-relation 534. Up to 7 conditions per place. [2022-11-18 20:49:09,405 INFO L137 encePairwiseOnDemand]: 724/761 looper letters, 6 selfloop transitions, 0 changer transitions 7/710 dead transitions. [2022-11-18 20:49:09,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 710 transitions, 1450 flow [2022-11-18 20:49:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:49:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:49:09,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1477 transitions. [2022-11-18 20:49:09,435 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9704336399474376 [2022-11-18 20:49:09,436 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1477 transitions. [2022-11-18 20:49:09,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1477 transitions. [2022-11-18 20:49:09,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:09,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1477 transitions. [2022-11-18 20:49:09,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 738.5) internal successors, (1477), 2 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,469 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,471 INFO L175 Difference]: Start difference. First operand has 684 places, 747 transitions, 1512 flow. Second operand 2 states and 1477 transitions. [2022-11-18 20:49:09,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 710 transitions, 1450 flow [2022-11-18 20:49:09,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 710 transitions, 1438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 20:49:09,502 INFO L231 Difference]: Finished difference. Result has 679 places, 703 transitions, 1412 flow [2022-11-18 20:49:09,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1412, PETRI_PLACES=679, PETRI_TRANSITIONS=703} [2022-11-18 20:49:09,509 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-18 20:49:09,510 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 703 transitions, 1412 flow [2022-11-18 20:49:09,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:09,512 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:09,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:49:09,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash -179339600, now seen corresponding path program 1 times [2022-11-18 20:49:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:09,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503526848] [2022-11-18 20:49:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:09,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503526848] [2022-11-18 20:49:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503526848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:09,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:09,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:09,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578439181] [2022-11-18 20:49:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:09,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:09,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:09,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:09,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:09,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 703 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:09,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:09,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:09,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:11,304 INFO L130 PetriNetUnfolder]: 274/3060 cut-off events. [2022-11-18 20:49:11,304 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-18 20:49:11,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3380 conditions, 3060 events. 274/3060 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 28303 event pairs, 96 based on Foata normal form. 0/2750 useless extension candidates. Maximal degree in co-relation 3377. Up to 185 conditions per place. [2022-11-18 20:49:11,391 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 33 selfloop transitions, 2 changer transitions 0/718 dead transitions. [2022-11-18 20:49:11,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 718 transitions, 1517 flow [2022-11-18 20:49:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:11,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 20:49:11,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 20:49:11,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 20:49:11,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 20:49:11,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:11,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 20:49:11,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,414 INFO L175 Difference]: Start difference. First operand has 679 places, 703 transitions, 1412 flow. Second operand 3 states and 2146 transitions. [2022-11-18 20:49:11,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 718 transitions, 1517 flow [2022-11-18 20:49:11,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 718 transitions, 1517 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:49:11,428 INFO L231 Difference]: Finished difference. Result has 676 places, 705 transitions, 1432 flow [2022-11-18 20:49:11,430 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1432, PETRI_PLACES=676, PETRI_TRANSITIONS=705} [2022-11-18 20:49:11,431 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -8 predicate places. [2022-11-18 20:49:11,431 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 705 transitions, 1432 flow [2022-11-18 20:49:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:11,434 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:11,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:49:11,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:11,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash 922747162, now seen corresponding path program 2 times [2022-11-18 20:49:11,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:11,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405660307] [2022-11-18 20:49:11,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:11,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:11,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:11,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405660307] [2022-11-18 20:49:11,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405660307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:11,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001713229] [2022-11-18 20:49:11,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:11,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:11,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:11,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 705 transitions, 1432 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:11,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:11,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:11,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:13,044 INFO L130 PetriNetUnfolder]: 288/3350 cut-off events. [2022-11-18 20:49:13,045 INFO L131 PetriNetUnfolder]: For 112/121 co-relation queries the response was YES. [2022-11-18 20:49:13,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 3350 events. 288/3350 cut-off events. For 112/121 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 30977 event pairs, 98 based on Foata normal form. 6/3065 useless extension candidates. Maximal degree in co-relation 3752. Up to 201 conditions per place. [2022-11-18 20:49:13,140 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 33 selfloop transitions, 4 changer transitions 0/720 dead transitions. [2022-11-18 20:49:13,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 720 transitions, 1545 flow [2022-11-18 20:49:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:13,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:13,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 20:49:13,146 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 20:49:13,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 20:49:13,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 20:49:13,149 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:13,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 20:49:13,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,165 INFO L175 Difference]: Start difference. First operand has 676 places, 705 transitions, 1432 flow. Second operand 3 states and 2146 transitions. [2022-11-18 20:49:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 720 transitions, 1545 flow [2022-11-18 20:49:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 720 transitions, 1543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:13,187 INFO L231 Difference]: Finished difference. Result has 679 places, 707 transitions, 1462 flow [2022-11-18 20:49:13,188 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1462, PETRI_PLACES=679, PETRI_TRANSITIONS=707} [2022-11-18 20:49:13,189 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-18 20:49:13,189 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 707 transitions, 1462 flow [2022-11-18 20:49:13,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,191 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:13,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:13,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:49:13,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:13,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:13,193 INFO L85 PathProgramCache]: Analyzing trace with hash -609745836, now seen corresponding path program 1 times [2022-11-18 20:49:13,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:13,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824782870] [2022-11-18 20:49:13,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:13,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:13,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824782870] [2022-11-18 20:49:13,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824782870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:13,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:13,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724295327] [2022-11-18 20:49:13,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:13,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:13,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:13,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 707 transitions, 1462 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:13,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:13,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:15,435 INFO L130 PetriNetUnfolder]: 575/5502 cut-off events. [2022-11-18 20:49:15,435 INFO L131 PetriNetUnfolder]: For 420/496 co-relation queries the response was YES. [2022-11-18 20:49:15,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 5502 events. 575/5502 cut-off events. For 420/496 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 57324 event pairs, 210 based on Foata normal form. 4/4914 useless extension candidates. Maximal degree in co-relation 6210. Up to 401 conditions per place. [2022-11-18 20:49:15,548 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 34 selfloop transitions, 3 changer transitions 0/722 dead transitions. [2022-11-18 20:49:15,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 722 transitions, 1580 flow [2022-11-18 20:49:15,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:15,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-18 20:49:15,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-18 20:49:15,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-18 20:49:15,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-18 20:49:15,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:15,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-18 20:49:15,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,581 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,581 INFO L175 Difference]: Start difference. First operand has 679 places, 707 transitions, 1462 flow. Second operand 3 states and 2145 transitions. [2022-11-18 20:49:15,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 722 transitions, 1580 flow [2022-11-18 20:49:15,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 722 transitions, 1564 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 20:49:15,604 INFO L231 Difference]: Finished difference. Result has 681 places, 710 transitions, 1486 flow [2022-11-18 20:49:15,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1486, PETRI_PLACES=681, PETRI_TRANSITIONS=710} [2022-11-18 20:49:15,607 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -3 predicate places. [2022-11-18 20:49:15,611 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 710 transitions, 1486 flow [2022-11-18 20:49:15,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:15,613 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:15,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:49:15,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:15,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:15,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2130173530, now seen corresponding path program 1 times [2022-11-18 20:49:15,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:15,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193534377] [2022-11-18 20:49:15,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:15,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:15,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:15,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:15,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193534377] [2022-11-18 20:49:15,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193534377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:15,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:15,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:15,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102391851] [2022-11-18 20:49:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:15,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:15,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:15,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 710 transitions, 1486 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:15,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:15,818 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:15,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:17,023 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2345] thread2EXIT-->L160-2: Formula: (and (= v_thread2Thread1of1ForFork0_thidvar2_4 0) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem95#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread2Thread1of1ForFork0_thidvar0_4) (= v_thread2Thread1of1ForFork0_thidvar1_4 0)) InVars {ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem95#1=|v_ULTIMATE.start_main_#t~mem95#1_5|, thread2Thread1of1ForFork0_thidvar2=v_thread2Thread1of1ForFork0_thidvar2_4, thread2Thread1of1ForFork0_thidvar1=v_thread2Thread1of1ForFork0_thidvar1_4, thread2Thread1of1ForFork0_thidvar0=v_thread2Thread1of1ForFork0_thidvar0_4} AuxVars[] AssignedVars[][524], [701#true, Black: 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 704#true, 722#true, 621#L160-2true, Black: 712#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 716#true, 415#L123-6true, 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0))]) [2022-11-18 20:49:17,023 INFO L383 tUnfolder$Statistics]: this new event has 232 ancestors and is cut-off event [2022-11-18 20:49:17,024 INFO L386 tUnfolder$Statistics]: existing Event has 239 ancestors and is cut-off event [2022-11-18 20:49:17,024 INFO L386 tUnfolder$Statistics]: existing Event has 241 ancestors and is cut-off event [2022-11-18 20:49:17,024 INFO L386 tUnfolder$Statistics]: existing Event has 232 ancestors and is cut-off event [2022-11-18 20:49:17,095 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2346] thread3EXIT-->L161-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][703], [701#true, Black: 716#true, Black: 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0)), 527#L161-2true, 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 710#true, 724#(not (= (* 256 (div ~is_null_1~0 256)) ~is_null_1~0))]) [2022-11-18 20:49:17,096 INFO L383 tUnfolder$Statistics]: this new event has 241 ancestors and is not cut-off event [2022-11-18 20:49:17,096 INFO L386 tUnfolder$Statistics]: existing Event has 265 ancestors and is not cut-off event [2022-11-18 20:49:17,096 INFO L386 tUnfolder$Statistics]: existing Event has 243 ancestors and is not cut-off event [2022-11-18 20:49:17,096 INFO L386 tUnfolder$Statistics]: existing Event has 250 ancestors and is not cut-off event [2022-11-18 20:49:17,154 INFO L130 PetriNetUnfolder]: 252/3123 cut-off events. [2022-11-18 20:49:17,154 INFO L131 PetriNetUnfolder]: For 345/408 co-relation queries the response was YES. [2022-11-18 20:49:17,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3657 conditions, 3123 events. 252/3123 cut-off events. For 345/408 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 29016 event pairs, 79 based on Foata normal form. 10/2887 useless extension candidates. Maximal degree in co-relation 3650. Up to 195 conditions per place. [2022-11-18 20:49:17,252 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 36 selfloop transitions, 3 changer transitions 0/726 dead transitions. [2022-11-18 20:49:17,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 726 transitions, 1609 flow [2022-11-18 20:49:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:17,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 20:49:17,257 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 20:49:17,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 20:49:17,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 20:49:17,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:17,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 20:49:17,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,273 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,273 INFO L175 Difference]: Start difference. First operand has 681 places, 710 transitions, 1486 flow. Second operand 3 states and 2146 transitions. [2022-11-18 20:49:17,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 726 transitions, 1609 flow [2022-11-18 20:49:17,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 726 transitions, 1606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:17,292 INFO L231 Difference]: Finished difference. Result has 684 places, 713 transitions, 1523 flow [2022-11-18 20:49:17,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1523, PETRI_PLACES=684, PETRI_TRANSITIONS=713} [2022-11-18 20:49:17,296 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 0 predicate places. [2022-11-18 20:49:17,296 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 713 transitions, 1523 flow [2022-11-18 20:49:17,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:17,298 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:17,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:49:17,299 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1545614416, now seen corresponding path program 2 times [2022-11-18 20:49:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671409908] [2022-11-18 20:49:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:17,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671409908] [2022-11-18 20:49:17,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671409908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:17,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:17,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:17,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052632396] [2022-11-18 20:49:17,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:17,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:17,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:17,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:17,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 713 transitions, 1523 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:17,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:17,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:17,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:18,538 INFO L130 PetriNetUnfolder]: 222/2779 cut-off events. [2022-11-18 20:49:18,538 INFO L131 PetriNetUnfolder]: For 524/584 co-relation queries the response was YES. [2022-11-18 20:49:18,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 2779 events. 222/2779 cut-off events. For 524/584 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 24829 event pairs, 76 based on Foata normal form. 6/2578 useless extension candidates. Maximal degree in co-relation 3399. Up to 187 conditions per place. [2022-11-18 20:49:18,641 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 36 selfloop transitions, 6 changer transitions 0/728 dead transitions. [2022-11-18 20:49:18,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 728 transitions, 1654 flow [2022-11-18 20:49:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:18,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:18,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 20:49:18,647 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 20:49:18,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 20:49:18,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 20:49:18,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:18,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 20:49:18,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,678 INFO L175 Difference]: Start difference. First operand has 684 places, 713 transitions, 1523 flow. Second operand 3 states and 2146 transitions. [2022-11-18 20:49:18,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 728 transitions, 1654 flow [2022-11-18 20:49:18,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 728 transitions, 1651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:18,697 INFO L231 Difference]: Finished difference. Result has 687 places, 715 transitions, 1572 flow [2022-11-18 20:49:18,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1572, PETRI_PLACES=687, PETRI_TRANSITIONS=715} [2022-11-18 20:49:18,701 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 3 predicate places. [2022-11-18 20:49:18,701 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 715 transitions, 1572 flow [2022-11-18 20:49:18,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,702 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:18,702 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:49:18,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash -924446952, now seen corresponding path program 2 times [2022-11-18 20:49:18,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:18,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432010704] [2022-11-18 20:49:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:18,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:18,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:18,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432010704] [2022-11-18 20:49:18,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432010704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:18,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:18,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:18,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391079384] [2022-11-18 20:49:18,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:18,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:18,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:18,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:18,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:18,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 715 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:18,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:18,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:21,011 INFO L130 PetriNetUnfolder]: 603/6728 cut-off events. [2022-11-18 20:49:21,011 INFO L131 PetriNetUnfolder]: For 862/973 co-relation queries the response was YES. [2022-11-18 20:49:21,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7729 conditions, 6728 events. 603/6728 cut-off events. For 862/973 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 74469 event pairs, 219 based on Foata normal form. 13/6102 useless extension candidates. Maximal degree in co-relation 7720. Up to 422 conditions per place. [2022-11-18 20:49:21,156 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 34 selfloop transitions, 6 changer transitions 0/727 dead transitions. [2022-11-18 20:49:21,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 727 transitions, 1684 flow [2022-11-18 20:49:21,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:21,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-18 20:49:21,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-18 20:49:21,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-18 20:49:21,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-18 20:49:21,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:21,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-18 20:49:21,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:21,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:21,176 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:21,176 INFO L175 Difference]: Start difference. First operand has 687 places, 715 transitions, 1572 flow. Second operand 3 states and 2145 transitions. [2022-11-18 20:49:21,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 727 transitions, 1684 flow [2022-11-18 20:49:21,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 727 transitions, 1668 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 20:49:21,198 INFO L231 Difference]: Finished difference. Result has 689 places, 715 transitions, 1596 flow [2022-11-18 20:49:21,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=689, PETRI_TRANSITIONS=715} [2022-11-18 20:49:21,201 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 5 predicate places. [2022-11-18 20:49:21,201 INFO L495 AbstractCegarLoop]: Abstraction has has 689 places, 715 transitions, 1596 flow [2022-11-18 20:49:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:21,202 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:21,202 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:49:21,203 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:21,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash 991382740, now seen corresponding path program 1 times [2022-11-18 20:49:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:21,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720312399] [2022-11-18 20:49:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:21,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:21,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:21,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720312399] [2022-11-18 20:49:21,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720312399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:21,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:21,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:49:21,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585685763] [2022-11-18 20:49:21,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:21,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:49:21,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:21,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:49:21,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:21,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 761 [2022-11-18 20:49:21,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 715 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:21,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:21,475 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 761 [2022-11-18 20:49:21,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:21,968 INFO L130 PetriNetUnfolder]: 36/946 cut-off events. [2022-11-18 20:49:21,968 INFO L131 PetriNetUnfolder]: For 135/170 co-relation queries the response was YES. [2022-11-18 20:49:21,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 946 events. 36/946 cut-off events. For 135/170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4779 event pairs, 0 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1106. Up to 55 conditions per place. [2022-11-18 20:49:21,998 INFO L137 encePairwiseOnDemand]: 746/761 looper letters, 39 selfloop transitions, 12 changer transitions 0/727 dead transitions. [2022-11-18 20:49:22,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 727 transitions, 1722 flow [2022-11-18 20:49:22,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:49:22,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:49:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3474 transitions. [2022-11-18 20:49:22,011 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130091984231274 [2022-11-18 20:49:22,011 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3474 transitions. [2022-11-18 20:49:22,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3474 transitions. [2022-11-18 20:49:22,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:22,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3474 transitions. [2022-11-18 20:49:22,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 694.8) internal successors, (3474), 5 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,032 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,032 INFO L175 Difference]: Start difference. First operand has 689 places, 715 transitions, 1596 flow. Second operand 5 states and 3474 transitions. [2022-11-18 20:49:22,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 727 transitions, 1722 flow [2022-11-18 20:49:22,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 727 transitions, 1706 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 20:49:22,049 INFO L231 Difference]: Finished difference. Result has 692 places, 718 transitions, 1628 flow [2022-11-18 20:49:22,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1628, PETRI_PLACES=692, PETRI_TRANSITIONS=718} [2022-11-18 20:49:22,053 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 8 predicate places. [2022-11-18 20:49:22,053 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 718 transitions, 1628 flow [2022-11-18 20:49:22,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:22,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:22,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:49:22,056 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:22,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 162669468, now seen corresponding path program 1 times [2022-11-18 20:49:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:22,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173945813] [2022-11-18 20:49:22,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:22,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:49:22,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173945813] [2022-11-18 20:49:22,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173945813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:22,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906876955] [2022-11-18 20:49:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:22,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:22,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:22,458 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:22,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:49:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:22,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:49:22,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:49:22,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:49:22,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906876955] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:22,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:22,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:49:22,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018577968] [2022-11-18 20:49:22,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:22,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:49:22,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:22,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:49:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:49:22,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-18 20:49:22,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 718 transitions, 1628 flow. Second operand has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:22,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:22,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-18 20:49:23,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:23,755 INFO L130 PetriNetUnfolder]: 36/970 cut-off events. [2022-11-18 20:49:23,755 INFO L131 PetriNetUnfolder]: For 123/157 co-relation queries the response was YES. [2022-11-18 20:49:23,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 970 events. 36/970 cut-off events. For 123/157 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4773 event pairs, 0 based on Foata normal form. 6/915 useless extension candidates. Maximal degree in co-relation 1170. Up to 46 conditions per place. [2022-11-18 20:49:23,783 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 42 selfloop transitions, 33 changer transitions 0/748 dead transitions. [2022-11-18 20:49:23,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 748 transitions, 1844 flow [2022-11-18 20:49:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:49:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:49:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 7572 transitions. [2022-11-18 20:49:23,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9045514275474854 [2022-11-18 20:49:23,801 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 7572 transitions. [2022-11-18 20:49:23,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 7572 transitions. [2022-11-18 20:49:23,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:23,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 7572 transitions. [2022-11-18 20:49:23,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 688.3636363636364) internal successors, (7572), 11 states have internal predecessors, (7572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:23,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:23,844 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:23,844 INFO L175 Difference]: Start difference. First operand has 692 places, 718 transitions, 1628 flow. Second operand 11 states and 7572 transitions. [2022-11-18 20:49:23,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 748 transitions, 1844 flow [2022-11-18 20:49:23,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 748 transitions, 1826 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:49:23,861 INFO L231 Difference]: Finished difference. Result has 702 places, 736 transitions, 1777 flow [2022-11-18 20:49:23,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=702, PETRI_TRANSITIONS=736} [2022-11-18 20:49:23,871 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 18 predicate places. [2022-11-18 20:49:23,871 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 736 transitions, 1777 flow [2022-11-18 20:49:23,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:23,874 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:23,875 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:23,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:24,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:24,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:24,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:24,092 INFO L85 PathProgramCache]: Analyzing trace with hash 183543043, now seen corresponding path program 1 times [2022-11-18 20:49:24,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:24,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250645491] [2022-11-18 20:49:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:49:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:24,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250645491] [2022-11-18 20:49:24,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250645491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:24,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482330254] [2022-11-18 20:49:24,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:24,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:24,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:24,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:24,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:49:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 20:49:24,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:25,242 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:49:25,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:25,454 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 20:49:25,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482330254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:25,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:25,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 20:49:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434763499] [2022-11-18 20:49:25,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:25,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:49:25,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:49:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:49:25,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-18 20:49:25,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 736 transitions, 1777 flow. Second operand has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:25,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:25,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-18 20:49:25,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:26,698 INFO L130 PetriNetUnfolder]: 36/1006 cut-off events. [2022-11-18 20:49:26,699 INFO L131 PetriNetUnfolder]: For 175/209 co-relation queries the response was YES. [2022-11-18 20:49:26,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1006 events. 36/1006 cut-off events. For 175/209 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4756 event pairs, 0 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 1337. Up to 46 conditions per place. [2022-11-18 20:49:26,732 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 54 selfloop transitions, 51 changer transitions 0/778 dead transitions. [2022-11-18 20:49:26,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 778 transitions, 2167 flow [2022-11-18 20:49:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:49:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:49:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 11688 transitions. [2022-11-18 20:49:26,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034552059982994 [2022-11-18 20:49:26,767 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 11688 transitions. [2022-11-18 20:49:26,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 11688 transitions. [2022-11-18 20:49:26,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:26,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 11688 transitions. [2022-11-18 20:49:26,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 687.5294117647059) internal successors, (11688), 17 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,851 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,851 INFO L175 Difference]: Start difference. First operand has 702 places, 736 transitions, 1777 flow. Second operand 17 states and 11688 transitions. [2022-11-18 20:49:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 778 transitions, 2167 flow [2022-11-18 20:49:26,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 778 transitions, 2130 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-18 20:49:26,873 INFO L231 Difference]: Finished difference. Result has 718 places, 757 transitions, 2015 flow [2022-11-18 20:49:26,874 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2015, PETRI_PLACES=718, PETRI_TRANSITIONS=757} [2022-11-18 20:49:26,875 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 34 predicate places. [2022-11-18 20:49:26,875 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 757 transitions, 2015 flow [2022-11-18 20:49:26,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:26,882 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:26,883 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:26,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27d4159f-e018-402c-b85d-937780c7ebef/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:27,090 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:27,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:27,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2052075755, now seen corresponding path program 2 times [2022-11-18 20:49:27,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:27,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198365042] [2022-11-18 20:49:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:27,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:49:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198365042] [2022-11-18 20:49:27,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198365042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:27,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:27,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508840862] [2022-11-18 20:49:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:27,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:27,530 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:27,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 757 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:27,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:27,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:27,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:29,496 INFO L130 PetriNetUnfolder]: 231/3749 cut-off events. [2022-11-18 20:49:29,496 INFO L131 PetriNetUnfolder]: For 501/619 co-relation queries the response was YES. [2022-11-18 20:49:29,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 3749 events. 231/3749 cut-off events. For 501/619 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 33885 event pairs, 44 based on Foata normal form. 2/3428 useless extension candidates. Maximal degree in co-relation 4477. Up to 132 conditions per place. [2022-11-18 20:49:29,617 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 24 selfloop transitions, 4 changer transitions 0/765 dead transitions. [2022-11-18 20:49:29,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 765 transitions, 2091 flow [2022-11-18 20:49:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:29,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2138 transitions. [2022-11-18 20:49:29,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364870784056066 [2022-11-18 20:49:29,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2138 transitions. [2022-11-18 20:49:29,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2138 transitions. [2022-11-18 20:49:29,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:29,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2138 transitions. [2022-11-18 20:49:29,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.6666666666666) internal successors, (2138), 3 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,634 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,634 INFO L175 Difference]: Start difference. First operand has 718 places, 757 transitions, 2015 flow. Second operand 3 states and 2138 transitions. [2022-11-18 20:49:29,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 765 transitions, 2091 flow [2022-11-18 20:49:29,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 765 transitions, 2024 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 20:49:29,653 INFO L231 Difference]: Finished difference. Result has 713 places, 758 transitions, 1966 flow [2022-11-18 20:49:29,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1966, PETRI_PLACES=713, PETRI_TRANSITIONS=758} [2022-11-18 20:49:29,655 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 29 predicate places. [2022-11-18 20:49:29,655 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 758 transitions, 1966 flow [2022-11-18 20:49:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:29,657 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:29,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:49:29,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:29,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:29,658 INFO L85 PathProgramCache]: Analyzing trace with hash -507796026, now seen corresponding path program 2 times [2022-11-18 20:49:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:29,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511386700] [2022-11-18 20:49:29,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:29,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:29,964 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:49:29,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:29,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511386700] [2022-11-18 20:49:29,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511386700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:29,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:29,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:29,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410502899] [2022-11-18 20:49:29,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:29,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:29,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:29,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:29,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:29,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:29,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 758 transitions, 1966 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:29,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:29,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:29,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:32,434 INFO L130 PetriNetUnfolder]: 318/6374 cut-off events. [2022-11-18 20:49:32,434 INFO L131 PetriNetUnfolder]: For 802/946 co-relation queries the response was YES. [2022-11-18 20:49:32,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7228 conditions, 6374 events. 318/6374 cut-off events. For 802/946 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 64195 event pairs, 22 based on Foata normal form. 2/5827 useless extension candidates. Maximal degree in co-relation 7210. Up to 96 conditions per place. [2022-11-18 20:49:32,653 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 25 selfloop transitions, 4 changer transitions 0/767 dead transitions. [2022-11-18 20:49:32,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 767 transitions, 2047 flow [2022-11-18 20:49:32,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2139 transitions. [2022-11-18 20:49:32,660 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9369250985545335 [2022-11-18 20:49:32,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2139 transitions. [2022-11-18 20:49:32,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2139 transitions. [2022-11-18 20:49:32,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:32,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2139 transitions. [2022-11-18 20:49:32,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:32,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:32,673 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:32,674 INFO L175 Difference]: Start difference. First operand has 713 places, 758 transitions, 1966 flow. Second operand 3 states and 2139 transitions. [2022-11-18 20:49:32,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 767 transitions, 2047 flow [2022-11-18 20:49:32,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 767 transitions, 2043 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:32,696 INFO L231 Difference]: Finished difference. Result has 715 places, 759 transitions, 1980 flow [2022-11-18 20:49:32,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1980, PETRI_PLACES=715, PETRI_TRANSITIONS=759} [2022-11-18 20:49:32,698 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 31 predicate places. [2022-11-18 20:49:32,699 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 759 transitions, 1980 flow [2022-11-18 20:49:32,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:32,700 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:32,700 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:32,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:49:32,701 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:32,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash 792061106, now seen corresponding path program 1 times [2022-11-18 20:49:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:32,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559197144] [2022-11-18 20:49:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:33,056 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:49:33,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:33,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559197144] [2022-11-18 20:49:33,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559197144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:33,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:33,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:33,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971036274] [2022-11-18 20:49:33,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:33,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:33,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:33,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:33,062 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 20:49:33,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 759 transitions, 1980 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:33,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:33,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 20:49:33,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:34,862 INFO L130 PetriNetUnfolder]: 444/4315 cut-off events. [2022-11-18 20:49:34,862 INFO L131 PetriNetUnfolder]: For 511/599 co-relation queries the response was YES. [2022-11-18 20:49:34,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5235 conditions, 4315 events. 444/4315 cut-off events. For 511/599 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 40683 event pairs, 198 based on Foata normal form. 0/3776 useless extension candidates. Maximal degree in co-relation 5216. Up to 487 conditions per place. [2022-11-18 20:49:34,909 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 23 selfloop transitions, 4 changer transitions 0/766 dead transitions. [2022-11-18 20:49:34,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 766 transitions, 2051 flow [2022-11-18 20:49:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 20:49:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2137 transitions. [2022-11-18 20:49:34,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9360490582566798 [2022-11-18 20:49:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2137 transitions. [2022-11-18 20:49:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2137 transitions. [2022-11-18 20:49:34,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:34,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2137 transitions. [2022-11-18 20:49:34,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,926 INFO L175 Difference]: Start difference. First operand has 715 places, 759 transitions, 1980 flow. Second operand 3 states and 2137 transitions. [2022-11-18 20:49:34,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 766 transitions, 2051 flow [2022-11-18 20:49:34,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 766 transitions, 2047 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:34,942 INFO L231 Difference]: Finished difference. Result has 717 places, 760 transitions, 1994 flow [2022-11-18 20:49:34,943 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1994, PETRI_PLACES=717, PETRI_TRANSITIONS=760} [2022-11-18 20:49:34,944 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 33 predicate places. [2022-11-18 20:49:34,944 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 760 transitions, 1994 flow [2022-11-18 20:49:34,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:34,945 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:34,945 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:34,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:49:34,945 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash 318329579, now seen corresponding path program 1 times [2022-11-18 20:49:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:34,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908893622] [2022-11-18 20:49:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:49:35,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:35,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908893622] [2022-11-18 20:49:35,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908893622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:35,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:35,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:35,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100108766] [2022-11-18 20:49:35,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:35,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:35,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:35,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:35,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:35,474 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 655 out of 761 [2022-11-18 20:49:35,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 760 transitions, 1994 flow. Second operand has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:35,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:35,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 655 of 761 [2022-11-18 20:49:35,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:49:47,771 INFO L130 PetriNetUnfolder]: 5961/35371 cut-off events. [2022-11-18 20:49:47,772 INFO L131 PetriNetUnfolder]: For 2137/2250 co-relation queries the response was YES. [2022-11-18 20:49:48,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44997 conditions, 35371 events. 5961/35371 cut-off events. For 2137/2250 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 503183 event pairs, 3852 based on Foata normal form. 8/31265 useless extension candidates. Maximal degree in co-relation 44977. Up to 6389 conditions per place. [2022-11-18 20:49:48,367 INFO L137 encePairwiseOnDemand]: 753/761 looper letters, 102 selfloop transitions, 5 changer transitions 4/810 dead transitions. [2022-11-18 20:49:48,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 810 transitions, 2325 flow [2022-11-18 20:49:48,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:49:48,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:49:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5352 transitions. [2022-11-18 20:49:48,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791064388961892 [2022-11-18 20:49:48,384 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5352 transitions. [2022-11-18 20:49:48,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5352 transitions. [2022-11-18 20:49:48,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:49:48,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5352 transitions. [2022-11-18 20:49:48,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 669.0) internal successors, (5352), 8 states have internal predecessors, (5352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:48,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:48,407 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 761.0) internal successors, (6849), 9 states have internal predecessors, (6849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:48,408 INFO L175 Difference]: Start difference. First operand has 717 places, 760 transitions, 1994 flow. Second operand 8 states and 5352 transitions. [2022-11-18 20:49:48,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 810 transitions, 2325 flow [2022-11-18 20:49:48,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 810 transitions, 2321 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:49:48,435 INFO L231 Difference]: Finished difference. Result has 728 places, 762 transitions, 2019 flow [2022-11-18 20:49:48,437 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2019, PETRI_PLACES=728, PETRI_TRANSITIONS=762} [2022-11-18 20:49:48,438 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 44 predicate places. [2022-11-18 20:49:48,438 INFO L495 AbstractCegarLoop]: Abstraction has has 728 places, 762 transitions, 2019 flow [2022-11-18 20:49:48,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:48,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:49:48,439 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:48,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:49:48,441 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:49:48,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1264966555, now seen corresponding path program 1 times [2022-11-18 20:49:48,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:48,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935857087] [2022-11-18 20:49:48,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:48,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:49:49,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935857087] [2022-11-18 20:49:49,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935857087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:49,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:49,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76711193] [2022-11-18 20:49:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:49,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:49,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:49,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:49,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:49,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 20:49:49,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 728 places, 762 transitions, 2019 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:49,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:49:49,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 20:49:49,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:02,280 INFO L130 PetriNetUnfolder]: 7161/36900 cut-off events. [2022-11-18 20:50:02,280 INFO L131 PetriNetUnfolder]: For 17069/18736 co-relation queries the response was YES. [2022-11-18 20:50:02,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57061 conditions, 36900 events. 7161/36900 cut-off events. For 17069/18736 co-relation queries the response was YES. Maximal size of possible extension queue 756. Compared 507714 event pairs, 2832 based on Foata normal form. 123/34647 useless extension candidates. Maximal degree in co-relation 57036. Up to 4501 conditions per place. [2022-11-18 20:50:03,137 INFO L137 encePairwiseOnDemand]: 748/761 looper letters, 201 selfloop transitions, 21 changer transitions 2/908 dead transitions. [2022-11-18 20:50:03,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 908 transitions, 3007 flow [2022-11-18 20:50:03,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:03,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:50:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4802 transitions. [2022-11-18 20:50:03,149 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014454664914586 [2022-11-18 20:50:03,149 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4802 transitions. [2022-11-18 20:50:03,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4802 transitions. [2022-11-18 20:50:03,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:03,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4802 transitions. [2022-11-18 20:50:03,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,168 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,168 INFO L175 Difference]: Start difference. First operand has 728 places, 762 transitions, 2019 flow. Second operand 7 states and 4802 transitions. [2022-11-18 20:50:03,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 908 transitions, 3007 flow [2022-11-18 20:50:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 908 transitions, 2998 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-18 20:50:03,255 INFO L231 Difference]: Finished difference. Result has 733 places, 784 transitions, 2277 flow [2022-11-18 20:50:03,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=748, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2277, PETRI_PLACES=733, PETRI_TRANSITIONS=784} [2022-11-18 20:50:03,258 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 49 predicate places. [2022-11-18 20:50:03,258 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 784 transitions, 2277 flow [2022-11-18 20:50:03,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:03,260 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:50:03,261 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:50:03,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:03,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1946978587, now seen corresponding path program 2 times [2022-11-18 20:50:03,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:03,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476011556] [2022-11-18 20:50:03,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:03,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:50:03,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:03,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476011556] [2022-11-18 20:50:03,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476011556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:03,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:03,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:50:03,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101303050] [2022-11-18 20:50:03,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:03,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:03,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:03,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:03,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:03,785 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 20:50:03,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 784 transitions, 2277 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:03,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:03,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 20:50:03,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:50:21,933 INFO L130 PetriNetUnfolder]: 7684/51223 cut-off events. [2022-11-18 20:50:21,933 INFO L131 PetriNetUnfolder]: For 27662/29082 co-relation queries the response was YES. [2022-11-18 20:50:22,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75019 conditions, 51223 events. 7684/51223 cut-off events. For 27662/29082 co-relation queries the response was YES. Maximal size of possible extension queue 1041. Compared 775878 event pairs, 5092 based on Foata normal form. 20/48092 useless extension candidates. Maximal degree in co-relation 74992. Up to 8735 conditions per place. [2022-11-18 20:50:23,065 INFO L137 encePairwiseOnDemand]: 744/761 looper letters, 188 selfloop transitions, 12 changer transitions 14/898 dead transitions. [2022-11-18 20:50:23,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 898 transitions, 3011 flow [2022-11-18 20:50:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:50:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4783 transitions. [2022-11-18 20:50:23,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8978787309930543 [2022-11-18 20:50:23,078 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4783 transitions. [2022-11-18 20:50:23,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4783 transitions. [2022-11-18 20:50:23,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:50:23,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4783 transitions. [2022-11-18 20:50:23,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 683.2857142857143) internal successors, (4783), 7 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:23,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:23,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:23,102 INFO L175 Difference]: Start difference. First operand has 733 places, 784 transitions, 2277 flow. Second operand 7 states and 4783 transitions. [2022-11-18 20:50:23,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 898 transitions, 3011 flow [2022-11-18 20:50:23,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 898 transitions, 3011 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:50:23,284 INFO L231 Difference]: Finished difference. Result has 743 places, 786 transitions, 2336 flow [2022-11-18 20:50:23,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2336, PETRI_PLACES=743, PETRI_TRANSITIONS=786} [2022-11-18 20:50:23,286 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 59 predicate places. [2022-11-18 20:50:23,286 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 786 transitions, 2336 flow [2022-11-18 20:50:23,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:23,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:50:23,288 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:50:23,288 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 20:50:23,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 691633835, now seen corresponding path program 3 times [2022-11-18 20:50:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:23,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143771747] [2022-11-18 20:50:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:23,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 20:50:24,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143771747] [2022-11-18 20:50:24,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143771747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:24,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:24,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:50:24,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093392612] [2022-11-18 20:50:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:24,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 20:50:24,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 786 transitions, 2336 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:24,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:50:24,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 20:50:24,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand