./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- [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-6b4ec56 [2022-11-20 09:27:07,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:27:07,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:27:07,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:27:07,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:27:07,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:27:07,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:27:07,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:27:07,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:27:07,982 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:27:07,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:27:07,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:27:07,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:27:07,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:27:07,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:27:07,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:27:07,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:27:07,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:27:08,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:27:08,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:27:08,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:27:08,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:27:08,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:27:08,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:27:08,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:27:08,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:27:08,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:27:08,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:27:08,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:27:08,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:27:08,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:27:08,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:27:08,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:27:08,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:27:08,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:27:08,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:27:08,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:27:08,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:27:08,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:27:08,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:27:08,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:27:08,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:27:08,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:27:08,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:27:08,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:27:08,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:27:08,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:27:08,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:27:08,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:27:08,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:27:08,080 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:27:08,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:27:08,081 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:27:08,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:27:08,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:27:08,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:27:08,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:27:08,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:27:08,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:27:08,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:27:08,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:27:08,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:27:08,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:27:08,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:27:08,084 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:27:08,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:27:08,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:08,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:27:08,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:27:08,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:27:08,086 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:27:08,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:27:08,086 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:27:08,086 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:27:08,087 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:27:08,087 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_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-11-20 09:27:08,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:27:08,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:27:08,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:27:08,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:27:08,470 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:27:08,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-20 09:27:11,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:27:11,795 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:27:11,796 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-11-20 09:27:11,804 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/data/5715c2181/1b39a61507ca47f795bca4d7466b1d3c/FLAG905cd7202 [2022-11-20 09:27:11,821 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/data/5715c2181/1b39a61507ca47f795bca4d7466b1d3c [2022-11-20 09:27:11,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:27:11,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:27:11,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:11,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:27:11,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:27:11,838 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1af305af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:11, skipping insertion in model container [2022-11-20 09:27:11,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:11" (1/1) ... [2022-11-20 09:27:11,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:27:11,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:27:12,135 WARN L237 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_989695e5-d86f-4676-95f8-803300e38522/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-20 09:27:12,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,155 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:27:12,184 WARN L237 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_989695e5-d86f-4676-95f8-803300e38522/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-11-20 09:27:12,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:27:12,206 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:27:12,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12 WrapperNode [2022-11-20 09:27:12,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:27:12,208 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:27:12,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:27:12,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,284 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-11-20 09:27:12,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:27:12,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:27:12,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:27:12,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:27:12,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:27:12,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:27:12,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:27:12,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (1/1) ... [2022-11-20 09:27:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:27:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:27:12,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:27:12,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:27:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:27:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:27:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:27:12,433 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:27:12,433 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:27:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 09:27:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 09:27:12,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-20 09:27:12,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-20 09:27:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:27:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:27:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:27:12,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:27:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:27:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:27:12,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:27:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:27:12,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:27:12,438 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:27:12,595 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:27:12,598 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:27:13,010 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:27:13,125 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:27:13,125 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 09:27:13,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13 BoogieIcfgContainer [2022-11-20 09:27:13,128 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:27:13,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:27:13,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:27:13,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:27:13,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:11" (1/3) ... [2022-11-20 09:27:13,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4401fe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:12" (2/3) ... [2022-11-20 09:27:13,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4401fe03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:13, skipping insertion in model container [2022-11-20 09:27:13,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13" (3/3) ... [2022-11-20 09:27:13,138 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-11-20 09:27:13,147 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:27:13,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:27:13,166 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:27:13,166 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:27:13,278 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 09:27:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-11-20 09:27:13,391 INFO L130 PetriNetUnfolder]: 2/138 cut-off events. [2022-11-20 09:27:13,391 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 09:27:13,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-11-20 09:27:13,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-11-20 09:27:13,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-11-20 09:27:13,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:27:13,419 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;@5dd9f9f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:27:13,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-20 09:27:13,459 INFO L130 PetriNetUnfolder]: 2/124 cut-off events. [2022-11-20 09:27:13,459 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-20 09:27:13,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:13,460 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] [2022-11-20 09:27:13,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:13,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:13,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1756808090, now seen corresponding path program 1 times [2022-11-20 09:27:13,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907988023] [2022-11-20 09:27:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:13,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:15,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:15,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907988023] [2022-11-20 09:27:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907988023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:15,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:15,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 09:27:15,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615324649] [2022-11-20 09:27:15,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:15,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:27:15,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:15,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:27:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:27:15,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2022-11-20 09:27:15,878 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 274 flow. Second operand has 12 states, 12 states have (on average 97.58333333333333) internal successors, (1171), 12 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:15,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:15,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2022-11-20 09:27:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:18,080 INFO L130 PetriNetUnfolder]: 3889/7196 cut-off events. [2022-11-20 09:27:18,080 INFO L131 PetriNetUnfolder]: For 1329/1329 co-relation queries the response was YES. [2022-11-20 09:27:18,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13841 conditions, 7196 events. 3889/7196 cut-off events. For 1329/1329 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 52434 event pairs, 1937 based on Foata normal form. 4/7012 useless extension candidates. Maximal degree in co-relation 10867. Up to 2051 conditions per place. [2022-11-20 09:27:18,143 INFO L137 encePairwiseOnDemand]: 120/142 looper letters, 94 selfloop transitions, 23 changer transitions 23/218 dead transitions. [2022-11-20 09:27:18,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 218 transitions, 800 flow [2022-11-20 09:27:18,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 09:27:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-20 09:27:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1650 transitions. [2022-11-20 09:27:18,166 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7262323943661971 [2022-11-20 09:27:18,167 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1650 transitions. [2022-11-20 09:27:18,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1650 transitions. [2022-11-20 09:27:18,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:18,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1650 transitions. [2022-11-20 09:27:18,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 103.125) internal successors, (1650), 16 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,193 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,195 INFO L175 Difference]: Start difference. First operand has 136 places, 125 transitions, 274 flow. Second operand 16 states and 1650 transitions. [2022-11-20 09:27:18,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 218 transitions, 800 flow [2022-11-20 09:27:18,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 218 transitions, 744 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:18,216 INFO L231 Difference]: Finished difference. Result has 153 places, 138 transitions, 406 flow [2022-11-20 09:27:18,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=406, PETRI_PLACES=153, PETRI_TRANSITIONS=138} [2022-11-20 09:27:18,222 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 17 predicate places. [2022-11-20 09:27:18,223 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 138 transitions, 406 flow [2022-11-20 09:27:18,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 97.58333333333333) internal successors, (1171), 12 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:18,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:18,224 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] [2022-11-20 09:27:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:27:18,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:18,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:18,225 INFO L85 PathProgramCache]: Analyzing trace with hash -319312236, now seen corresponding path program 2 times [2022-11-20 09:27:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:18,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742417895] [2022-11-20 09:27:18,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:19,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:19,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742417895] [2022-11-20 09:27:19,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742417895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:19,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:19,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163153246] [2022-11-20 09:27:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:19,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:19,479 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-11-20 09:27:19,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 138 transitions, 406 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:19,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:19,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-11-20 09:27:19,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:21,006 INFO L130 PetriNetUnfolder]: 3481/6357 cut-off events. [2022-11-20 09:27:21,007 INFO L131 PetriNetUnfolder]: For 4752/4769 co-relation queries the response was YES. [2022-11-20 09:27:21,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16253 conditions, 6357 events. 3481/6357 cut-off events. For 4752/4769 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 44267 event pairs, 1877 based on Foata normal form. 1/6117 useless extension candidates. Maximal degree in co-relation 16234. Up to 3139 conditions per place. [2022-11-20 09:27:21,064 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 54 selfloop transitions, 13 changer transitions 37/188 dead transitions. [2022-11-20 09:27:21,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 188 transitions, 816 flow [2022-11-20 09:27:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2022-11-20 09:27:21,068 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2022-11-20 09:27:21,068 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2022-11-20 09:27:21,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2022-11-20 09:27:21,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:21,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2022-11-20 09:27:21,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,076 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,076 INFO L175 Difference]: Start difference. First operand has 153 places, 138 transitions, 406 flow. Second operand 10 states and 1089 transitions. [2022-11-20 09:27:21,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 188 transitions, 816 flow [2022-11-20 09:27:21,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 188 transitions, 779 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:21,091 INFO L231 Difference]: Finished difference. Result has 151 places, 141 transitions, 454 flow [2022-11-20 09:27:21,091 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=454, PETRI_PLACES=151, PETRI_TRANSITIONS=141} [2022-11-20 09:27:21,092 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 15 predicate places. [2022-11-20 09:27:21,093 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 141 transitions, 454 flow [2022-11-20 09:27:21,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:21,094 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] [2022-11-20 09:27:21,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:27:21,094 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:21,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:21,095 INFO L85 PathProgramCache]: Analyzing trace with hash -969069620, now seen corresponding path program 3 times [2022-11-20 09:27:21,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:21,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255561445] [2022-11-20 09:27:21,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:21,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:21,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:21,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:21,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255561445] [2022-11-20 09:27:21,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255561445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:21,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:21,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257685883] [2022-11-20 09:27:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:21,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:21,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:21,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:21,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:21,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 141 transitions, 454 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:21,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:21,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:21,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:22,569 INFO L130 PetriNetUnfolder]: 2218/5236 cut-off events. [2022-11-20 09:27:22,569 INFO L131 PetriNetUnfolder]: For 4975/5356 co-relation queries the response was YES. [2022-11-20 09:27:22,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12489 conditions, 5236 events. 2218/5236 cut-off events. For 4975/5356 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 45226 event pairs, 537 based on Foata normal form. 115/5157 useless extension candidates. Maximal degree in co-relation 12471. Up to 1079 conditions per place. [2022-11-20 09:27:22,636 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 67 selfloop transitions, 23 changer transitions 0/191 dead transitions. [2022-11-20 09:27:22,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 191 transitions, 794 flow [2022-11-20 09:27:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:22,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:22,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-11-20 09:27:22,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.806841046277666 [2022-11-20 09:27:22,641 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-11-20 09:27:22,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-11-20 09:27:22,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:22,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-11-20 09:27:22,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,649 INFO L175 Difference]: Start difference. First operand has 151 places, 141 transitions, 454 flow. Second operand 7 states and 802 transitions. [2022-11-20 09:27:22,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 191 transitions, 794 flow [2022-11-20 09:27:22,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 191 transitions, 753 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:22,670 INFO L231 Difference]: Finished difference. Result has 147 places, 157 transitions, 543 flow [2022-11-20 09:27:22,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=543, PETRI_PLACES=147, PETRI_TRANSITIONS=157} [2022-11-20 09:27:22,673 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2022-11-20 09:27:22,673 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 157 transitions, 543 flow [2022-11-20 09:27:22,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:22,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:22,675 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] [2022-11-20 09:27:22,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 09:27:22,675 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:22,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1100889028, now seen corresponding path program 4 times [2022-11-20 09:27:22,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:22,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742371446] [2022-11-20 09:27:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:22,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:23,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:23,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742371446] [2022-11-20 09:27:23,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742371446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:23,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:23,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:23,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237623656] [2022-11-20 09:27:23,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:23,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:23,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:23,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:23,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 157 transitions, 543 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:23,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:23,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:23,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:23,974 INFO L130 PetriNetUnfolder]: 1933/4687 cut-off events. [2022-11-20 09:27:23,974 INFO L131 PetriNetUnfolder]: For 5136/5593 co-relation queries the response was YES. [2022-11-20 09:27:23,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12871 conditions, 4687 events. 1933/4687 cut-off events. For 5136/5593 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 40263 event pairs, 500 based on Foata normal form. 301/4792 useless extension candidates. Maximal degree in co-relation 4106. Up to 946 conditions per place. [2022-11-20 09:27:24,016 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 63 selfloop transitions, 28 changer transitions 0/191 dead transitions. [2022-11-20 09:27:24,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 191 transitions, 858 flow [2022-11-20 09:27:24,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:24,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:24,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-11-20 09:27:24,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8058350100603622 [2022-11-20 09:27:24,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2022-11-20 09:27:24,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2022-11-20 09:27:24,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:24,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2022-11-20 09:27:24,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,030 INFO L175 Difference]: Start difference. First operand has 147 places, 157 transitions, 543 flow. Second operand 7 states and 801 transitions. [2022-11-20 09:27:24,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 191 transitions, 858 flow [2022-11-20 09:27:24,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 191 transitions, 854 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 09:27:24,041 INFO L231 Difference]: Finished difference. Result has 153 places, 161 transitions, 643 flow [2022-11-20 09:27:24,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=643, PETRI_PLACES=153, PETRI_TRANSITIONS=161} [2022-11-20 09:27:24,043 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 17 predicate places. [2022-11-20 09:27:24,043 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 161 transitions, 643 flow [2022-11-20 09:27:24,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,043 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:24,044 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] [2022-11-20 09:27:24,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:27:24,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:24,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1524937522, now seen corresponding path program 5 times [2022-11-20 09:27:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:24,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755294657] [2022-11-20 09:27:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:24,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:24,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755294657] [2022-11-20 09:27:24,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755294657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:24,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:24,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751477114] [2022-11-20 09:27:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:24,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:24,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:24,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 161 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:24,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:24,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:24,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:25,414 INFO L130 PetriNetUnfolder]: 2251/5441 cut-off events. [2022-11-20 09:27:25,414 INFO L131 PetriNetUnfolder]: For 10176/10579 co-relation queries the response was YES. [2022-11-20 09:27:25,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17286 conditions, 5441 events. 2251/5441 cut-off events. For 10176/10579 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 48023 event pairs, 417 based on Foata normal form. 154/5369 useless extension candidates. Maximal degree in co-relation 6611. Up to 1337 conditions per place. [2022-11-20 09:27:25,485 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 74 selfloop transitions, 64 changer transitions 2/240 dead transitions. [2022-11-20 09:27:25,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 240 transitions, 1336 flow [2022-11-20 09:27:25,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:27:25,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 924 transitions. [2022-11-20 09:27:25,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8133802816901409 [2022-11-20 09:27:25,489 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 924 transitions. [2022-11-20 09:27:25,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 924 transitions. [2022-11-20 09:27:25,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:25,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 924 transitions. [2022-11-20 09:27:25,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.5) internal successors, (924), 8 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:25,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:25,497 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:25,497 INFO L175 Difference]: Start difference. First operand has 153 places, 161 transitions, 643 flow. Second operand 8 states and 924 transitions. [2022-11-20 09:27:25,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 240 transitions, 1336 flow [2022-11-20 09:27:25,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 240 transitions, 1288 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:25,513 INFO L231 Difference]: Finished difference. Result has 159 places, 198 transitions, 1084 flow [2022-11-20 09:27:25,514 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1084, PETRI_PLACES=159, PETRI_TRANSITIONS=198} [2022-11-20 09:27:25,516 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2022-11-20 09:27:25,516 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 198 transitions, 1084 flow [2022-11-20 09:27:25,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:25,517 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:25,517 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] [2022-11-20 09:27:25,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:27:25,518 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:25,520 INFO L85 PathProgramCache]: Analyzing trace with hash -770377684, now seen corresponding path program 6 times [2022-11-20 09:27:25,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:25,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205199257] [2022-11-20 09:27:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:25,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:25,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205199257] [2022-11-20 09:27:25,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205199257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:25,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:25,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903853794] [2022-11-20 09:27:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:25,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:25,825 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:25,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 198 transitions, 1084 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:25,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:25,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:25,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:26,836 INFO L130 PetriNetUnfolder]: 2064/5157 cut-off events. [2022-11-20 09:27:26,836 INFO L131 PetriNetUnfolder]: For 15592/16109 co-relation queries the response was YES. [2022-11-20 09:27:26,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18491 conditions, 5157 events. 2064/5157 cut-off events. For 15592/16109 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 46355 event pairs, 573 based on Foata normal form. 179/5107 useless extension candidates. Maximal degree in co-relation 7579. Up to 1196 conditions per place. [2022-11-20 09:27:26,906 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 84 selfloop transitions, 48 changer transitions 4/235 dead transitions. [2022-11-20 09:27:26,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 235 transitions, 1584 flow [2022-11-20 09:27:26,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:26,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:26,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2022-11-20 09:27:26,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8048289738430584 [2022-11-20 09:27:26,910 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2022-11-20 09:27:26,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2022-11-20 09:27:26,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:26,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2022-11-20 09:27:26,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,917 INFO L175 Difference]: Start difference. First operand has 159 places, 198 transitions, 1084 flow. Second operand 7 states and 800 transitions. [2022-11-20 09:27:26,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 235 transitions, 1584 flow [2022-11-20 09:27:26,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 235 transitions, 1538 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-11-20 09:27:26,948 INFO L231 Difference]: Finished difference. Result has 165 places, 203 transitions, 1229 flow [2022-11-20 09:27:26,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1035, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1229, PETRI_PLACES=165, PETRI_TRANSITIONS=203} [2022-11-20 09:27:26,951 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 29 predicate places. [2022-11-20 09:27:26,951 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 203 transitions, 1229 flow [2022-11-20 09:27:26,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:26,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:26,953 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] [2022-11-20 09:27:26,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 09:27:26,953 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash -955814636, now seen corresponding path program 7 times [2022-11-20 09:27:26,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:26,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294979585] [2022-11-20 09:27:26,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:27,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:27,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294979585] [2022-11-20 09:27:27,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294979585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:27,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:27,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:27:27,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415121685] [2022-11-20 09:27:27,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:27:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:27,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:27:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:27:27,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:27,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 203 transitions, 1229 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:27,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:27,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:27,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:28,203 INFO L130 PetriNetUnfolder]: 1090/3014 cut-off events. [2022-11-20 09:27:28,204 INFO L131 PetriNetUnfolder]: For 11627/11998 co-relation queries the response was YES. [2022-11-20 09:27:28,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11607 conditions, 3014 events. 1090/3014 cut-off events. For 11627/11998 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 24723 event pairs, 228 based on Foata normal form. 173/3071 useless extension candidates. Maximal degree in co-relation 8596. Up to 723 conditions per place. [2022-11-20 09:27:28,258 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 84 selfloop transitions, 58 changer transitions 1/237 dead transitions. [2022-11-20 09:27:28,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 237 transitions, 1783 flow [2022-11-20 09:27:28,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:27:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:27:28,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 799 transitions. [2022-11-20 09:27:28,262 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8038229376257545 [2022-11-20 09:27:28,262 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 799 transitions. [2022-11-20 09:27:28,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 799 transitions. [2022-11-20 09:27:28,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:28,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 799 transitions. [2022-11-20 09:27:28,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.14285714285714) internal successors, (799), 7 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,270 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,270 INFO L175 Difference]: Start difference. First operand has 165 places, 203 transitions, 1229 flow. Second operand 7 states and 799 transitions. [2022-11-20 09:27:28,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 237 transitions, 1783 flow [2022-11-20 09:27:28,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 237 transitions, 1695 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-11-20 09:27:28,295 INFO L231 Difference]: Finished difference. Result has 166 places, 209 transitions, 1436 flow [2022-11-20 09:27:28,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1059, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1436, PETRI_PLACES=166, PETRI_TRANSITIONS=209} [2022-11-20 09:27:28,297 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 30 predicate places. [2022-11-20 09:27:28,297 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 209 transitions, 1436 flow [2022-11-20 09:27:28,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:28,298 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] [2022-11-20 09:27:28,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 09:27:28,299 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:28,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:28,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1342518222, now seen corresponding path program 8 times [2022-11-20 09:27:28,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:28,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431489461] [2022-11-20 09:27:28,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:28,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:28,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:28,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:28,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431489461] [2022-11-20 09:27:28,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431489461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:28,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:28,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:28,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392112265] [2022-11-20 09:27:28,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:28,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:28,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:28,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:28,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:28,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:28,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 209 transitions, 1436 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:28,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:28,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:29,626 INFO L130 PetriNetUnfolder]: 1096/3060 cut-off events. [2022-11-20 09:27:29,626 INFO L131 PetriNetUnfolder]: For 14450/15075 co-relation queries the response was YES. [2022-11-20 09:27:29,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12278 conditions, 3060 events. 1096/3060 cut-off events. For 14450/15075 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 25254 event pairs, 160 based on Foata normal form. 262/3193 useless extension candidates. Maximal degree in co-relation 3946. Up to 663 conditions per place. [2022-11-20 09:27:29,677 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 74 selfloop transitions, 85 changer transitions 2/255 dead transitions. [2022-11-20 09:27:29,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 255 transitions, 2021 flow [2022-11-20 09:27:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:27:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 923 transitions. [2022-11-20 09:27:29,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-11-20 09:27:29,682 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 923 transitions. [2022-11-20 09:27:29,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 923 transitions. [2022-11-20 09:27:29,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:29,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 923 transitions. [2022-11-20 09:27:29,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.375) internal successors, (923), 8 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,690 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,690 INFO L175 Difference]: Start difference. First operand has 166 places, 209 transitions, 1436 flow. Second operand 8 states and 923 transitions. [2022-11-20 09:27:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 255 transitions, 2021 flow [2022-11-20 09:27:29,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 255 transitions, 1913 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:29,720 INFO L231 Difference]: Finished difference. Result has 169 places, 213 transitions, 1593 flow [2022-11-20 09:27:29,720 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1335, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1593, PETRI_PLACES=169, PETRI_TRANSITIONS=213} [2022-11-20 09:27:29,721 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 33 predicate places. [2022-11-20 09:27:29,721 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 213 transitions, 1593 flow [2022-11-20 09:27:29,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:29,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:29,723 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] [2022-11-20 09:27:29,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:27:29,723 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:29,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:29,724 INFO L85 PathProgramCache]: Analyzing trace with hash 318869402, now seen corresponding path program 9 times [2022-11-20 09:27:29,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:29,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276734977] [2022-11-20 09:27:29,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:29,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:30,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:30,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276734977] [2022-11-20 09:27:30,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276734977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:30,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:30,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 09:27:30,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453445607] [2022-11-20 09:27:30,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:30,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 09:27:30,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:30,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 09:27:30,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 09:27:30,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:30,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 213 transitions, 1593 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,010 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:30,010 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:30,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:30,801 INFO L130 PetriNetUnfolder]: 1069/2988 cut-off events. [2022-11-20 09:27:30,801 INFO L131 PetriNetUnfolder]: For 15811/16603 co-relation queries the response was YES. [2022-11-20 09:27:30,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12437 conditions, 2988 events. 1069/2988 cut-off events. For 15811/16603 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 24349 event pairs, 150 based on Foata normal form. 374/3228 useless extension candidates. Maximal degree in co-relation 4916. Up to 658 conditions per place. [2022-11-20 09:27:30,836 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 74 selfloop transitions, 89 changer transitions 2/259 dead transitions. [2022-11-20 09:27:30,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 259 transitions, 2192 flow [2022-11-20 09:27:30,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 09:27:30,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 09:27:30,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 924 transitions. [2022-11-20 09:27:30,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8133802816901409 [2022-11-20 09:27:30,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 924 transitions. [2022-11-20 09:27:30,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 924 transitions. [2022-11-20 09:27:30,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:30,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 924 transitions. [2022-11-20 09:27:30,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.5) internal successors, (924), 8 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,846 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,847 INFO L175 Difference]: Start difference. First operand has 169 places, 213 transitions, 1593 flow. Second operand 8 states and 924 transitions. [2022-11-20 09:27:30,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 259 transitions, 2192 flow [2022-11-20 09:27:30,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 259 transitions, 2000 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-20 09:27:30,865 INFO L231 Difference]: Finished difference. Result has 170 places, 217 transitions, 1682 flow [2022-11-20 09:27:30,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1682, PETRI_PLACES=170, PETRI_TRANSITIONS=217} [2022-11-20 09:27:30,866 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 34 predicate places. [2022-11-20 09:27:30,867 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 217 transitions, 1682 flow [2022-11-20 09:27:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:30,867 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:30,868 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] [2022-11-20 09:27:30,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 09:27:30,868 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:30,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash 942268090, now seen corresponding path program 10 times [2022-11-20 09:27:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:30,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043667633] [2022-11-20 09:27:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:30,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:31,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:31,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:31,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043667633] [2022-11-20 09:27:31,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043667633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:31,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:31,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:31,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650878795] [2022-11-20 09:27:31,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:31,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:31,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:31,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:31,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:31,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 217 transitions, 1682 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:31,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:31,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:31,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:31,955 INFO L130 PetriNetUnfolder]: 1101/3051 cut-off events. [2022-11-20 09:27:31,955 INFO L131 PetriNetUnfolder]: For 18755/19620 co-relation queries the response was YES. [2022-11-20 09:27:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12923 conditions, 3051 events. 1101/3051 cut-off events. For 18755/19620 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 25355 event pairs, 135 based on Foata normal form. 391/3314 useless extension candidates. Maximal degree in co-relation 9877. Up to 656 conditions per place. [2022-11-20 09:27:31,999 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 86 selfloop transitions, 103 changer transitions 4/287 dead transitions. [2022-11-20 09:27:31,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 287 transitions, 2576 flow [2022-11-20 09:27:32,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:32,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1153 transitions. [2022-11-20 09:27:32,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8119718309859155 [2022-11-20 09:27:32,003 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1153 transitions. [2022-11-20 09:27:32,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1153 transitions. [2022-11-20 09:27:32,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:32,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1153 transitions. [2022-11-20 09:27:32,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.3) internal successors, (1153), 10 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,010 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,010 INFO L175 Difference]: Start difference. First operand has 170 places, 217 transitions, 1682 flow. Second operand 10 states and 1153 transitions. [2022-11-20 09:27:32,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 287 transitions, 2576 flow [2022-11-20 09:27:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 287 transitions, 2351 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-11-20 09:27:32,035 INFO L231 Difference]: Finished difference. Result has 174 places, 231 transitions, 1934 flow [2022-11-20 09:27:32,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1499, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1934, PETRI_PLACES=174, PETRI_TRANSITIONS=231} [2022-11-20 09:27:32,036 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 38 predicate places. [2022-11-20 09:27:32,036 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 231 transitions, 1934 flow [2022-11-20 09:27:32,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:32,037 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] [2022-11-20 09:27:32,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 09:27:32,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:32,038 INFO L85 PathProgramCache]: Analyzing trace with hash -978762290, now seen corresponding path program 11 times [2022-11-20 09:27:32,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:32,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601542353] [2022-11-20 09:27:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:32,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:32,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601542353] [2022-11-20 09:27:32,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601542353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:32,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:32,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470099522] [2022-11-20 09:27:32,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:32,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:32,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:32,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:32,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:32,366 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:32,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 231 transitions, 1934 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:32,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:32,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:32,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:33,137 INFO L130 PetriNetUnfolder]: 1045/3070 cut-off events. [2022-11-20 09:27:33,138 INFO L131 PetriNetUnfolder]: For 20619/21360 co-relation queries the response was YES. [2022-11-20 09:27:33,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 3070 events. 1045/3070 cut-off events. For 20619/21360 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25992 event pairs, 146 based on Foata normal form. 319/3262 useless extension candidates. Maximal degree in co-relation 4727. Up to 634 conditions per place. [2022-11-20 09:27:33,175 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 85 selfloop transitions, 109 changer transitions 6/294 dead transitions. [2022-11-20 09:27:33,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 294 transitions, 2783 flow [2022-11-20 09:27:33,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:33,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2022-11-20 09:27:33,178 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2022-11-20 09:27:33,179 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2022-11-20 09:27:33,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2022-11-20 09:27:33,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:33,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2022-11-20 09:27:33,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,188 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,188 INFO L175 Difference]: Start difference. First operand has 174 places, 231 transitions, 1934 flow. Second operand 10 states and 1150 transitions. [2022-11-20 09:27:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 294 transitions, 2783 flow [2022-11-20 09:27:33,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 294 transitions, 2638 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:33,215 INFO L231 Difference]: Finished difference. Result has 180 places, 237 transitions, 2121 flow [2022-11-20 09:27:33,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2121, PETRI_PLACES=180, PETRI_TRANSITIONS=237} [2022-11-20 09:27:33,216 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 44 predicate places. [2022-11-20 09:27:33,217 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 237 transitions, 2121 flow [2022-11-20 09:27:33,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:33,218 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] [2022-11-20 09:27:33,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:27:33,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:33,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:33,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2046585856, now seen corresponding path program 12 times [2022-11-20 09:27:33,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:33,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150270233] [2022-11-20 09:27:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:33,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:33,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:33,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150270233] [2022-11-20 09:27:33,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150270233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:33,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:33,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:33,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454793865] [2022-11-20 09:27:33,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:33,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:33,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:33,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:33,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:33,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:33,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 237 transitions, 2121 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:33,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:33,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:34,170 INFO L130 PetriNetUnfolder]: 660/2198 cut-off events. [2022-11-20 09:27:34,170 INFO L131 PetriNetUnfolder]: For 16220/16927 co-relation queries the response was YES. [2022-11-20 09:27:34,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9920 conditions, 2198 events. 660/2198 cut-off events. For 16220/16927 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 18134 event pairs, 62 based on Foata normal form. 393/2522 useless extension candidates. Maximal degree in co-relation 5360. Up to 471 conditions per place. [2022-11-20 09:27:34,196 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 79 selfloop transitions, 113 changer transitions 30/316 dead transitions. [2022-11-20 09:27:34,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 316 transitions, 3377 flow [2022-11-20 09:27:34,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:34,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1146 transitions. [2022-11-20 09:27:34,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8070422535211268 [2022-11-20 09:27:34,201 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1146 transitions. [2022-11-20 09:27:34,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1146 transitions. [2022-11-20 09:27:34,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:34,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1146 transitions. [2022-11-20 09:27:34,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:34,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:34,210 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:34,210 INFO L175 Difference]: Start difference. First operand has 180 places, 237 transitions, 2121 flow. Second operand 10 states and 1146 transitions. [2022-11-20 09:27:34,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 316 transitions, 3377 flow [2022-11-20 09:27:34,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 316 transitions, 3226 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-20 09:27:34,240 INFO L231 Difference]: Finished difference. Result has 185 places, 240 transitions, 2317 flow [2022-11-20 09:27:34,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1983, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2317, PETRI_PLACES=185, PETRI_TRANSITIONS=240} [2022-11-20 09:27:34,242 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 49 predicate places. [2022-11-20 09:27:34,242 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 240 transitions, 2317 flow [2022-11-20 09:27:34,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:34,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:34,252 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] [2022-11-20 09:27:34,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 09:27:34,252 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:34,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1111722494, now seen corresponding path program 13 times [2022-11-20 09:27:34,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:34,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144995045] [2022-11-20 09:27:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:34,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:34,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:34,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:34,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144995045] [2022-11-20 09:27:34,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144995045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:34,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:34,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:34,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094632489] [2022-11-20 09:27:34,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:34,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:34,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:34,567 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:34,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 240 transitions, 2317 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:34,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:34,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:34,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:35,173 INFO L130 PetriNetUnfolder]: 510/1880 cut-off events. [2022-11-20 09:27:35,173 INFO L131 PetriNetUnfolder]: For 12985/13364 co-relation queries the response was YES. [2022-11-20 09:27:35,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8157 conditions, 1880 events. 510/1880 cut-off events. For 12985/13364 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14842 event pairs, 69 based on Foata normal form. 158/1978 useless extension candidates. Maximal degree in co-relation 3724. Up to 361 conditions per place. [2022-11-20 09:27:35,197 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 72 selfloop transitions, 147 changer transitions 10/323 dead transitions. [2022-11-20 09:27:35,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 323 transitions, 3526 flow [2022-11-20 09:27:35,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:35,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:27:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1251 transitions. [2022-11-20 09:27:35,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8008962868117798 [2022-11-20 09:27:35,204 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1251 transitions. [2022-11-20 09:27:35,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1251 transitions. [2022-11-20 09:27:35,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:35,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1251 transitions. [2022-11-20 09:27:35,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.72727272727273) internal successors, (1251), 11 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,211 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,211 INFO L175 Difference]: Start difference. First operand has 185 places, 240 transitions, 2317 flow. Second operand 11 states and 1251 transitions. [2022-11-20 09:27:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 323 transitions, 3526 flow [2022-11-20 09:27:35,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 323 transitions, 3396 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:35,261 INFO L231 Difference]: Finished difference. Result has 192 places, 268 transitions, 2945 flow [2022-11-20 09:27:35,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2945, PETRI_PLACES=192, PETRI_TRANSITIONS=268} [2022-11-20 09:27:35,262 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 56 predicate places. [2022-11-20 09:27:35,262 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 268 transitions, 2945 flow [2022-11-20 09:27:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:35,263 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] [2022-11-20 09:27:35,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 09:27:35,264 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:35,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1767013110, now seen corresponding path program 14 times [2022-11-20 09:27:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044076535] [2022-11-20 09:27:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:35,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:35,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:35,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044076535] [2022-11-20 09:27:35,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044076535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:35,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:35,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:35,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348937468] [2022-11-20 09:27:35,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:35,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:35,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:35,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:35,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:35,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:35,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 268 transitions, 2945 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:35,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:35,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:35,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:36,189 INFO L130 PetriNetUnfolder]: 493/1832 cut-off events. [2022-11-20 09:27:36,189 INFO L131 PetriNetUnfolder]: For 15025/15325 co-relation queries the response was YES. [2022-11-20 09:27:36,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8536 conditions, 1832 events. 493/1832 cut-off events. For 15025/15325 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14406 event pairs, 68 based on Foata normal form. 147/1917 useless extension candidates. Maximal degree in co-relation 4504. Up to 349 conditions per place. [2022-11-20 09:27:36,211 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 65 selfloop transitions, 152 changer transitions 3/314 dead transitions. [2022-11-20 09:27:36,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 314 transitions, 3741 flow [2022-11-20 09:27:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:36,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2022-11-20 09:27:36,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-11-20 09:27:36,214 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2022-11-20 09:27:36,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2022-11-20 09:27:36,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:36,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2022-11-20 09:27:36,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,222 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,222 INFO L175 Difference]: Start difference. First operand has 192 places, 268 transitions, 2945 flow. Second operand 10 states and 1136 transitions. [2022-11-20 09:27:36,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 314 transitions, 3741 flow [2022-11-20 09:27:36,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 314 transitions, 3669 flow, removed 24 selfloop flow, removed 4 redundant places. [2022-11-20 09:27:36,260 INFO L231 Difference]: Finished difference. Result has 198 places, 273 transitions, 3276 flow [2022-11-20 09:27:36,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2895, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3276, PETRI_PLACES=198, PETRI_TRANSITIONS=273} [2022-11-20 09:27:36,261 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 62 predicate places. [2022-11-20 09:27:36,262 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 273 transitions, 3276 flow [2022-11-20 09:27:36,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:36,262 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] [2022-11-20 09:27:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 09:27:36,263 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:36,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:36,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1405714698, now seen corresponding path program 15 times [2022-11-20 09:27:36,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:36,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104467728] [2022-11-20 09:27:36,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:36,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:36,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:36,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:36,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104467728] [2022-11-20 09:27:36,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104467728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:36,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:36,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:36,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751445764] [2022-11-20 09:27:36,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:36,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:36,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:36,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:36,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2022-11-20 09:27:36,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 273 transitions, 3276 flow. Second operand has 10 states, 10 states have (on average 98.3) internal successors, (983), 10 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:36,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:36,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2022-11-20 09:27:36,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:37,532 INFO L130 PetriNetUnfolder]: 859/2483 cut-off events. [2022-11-20 09:27:37,533 INFO L131 PetriNetUnfolder]: For 21803/21803 co-relation queries the response was YES. [2022-11-20 09:27:37,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13219 conditions, 2483 events. 859/2483 cut-off events. For 21803/21803 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 19426 event pairs, 168 based on Foata normal form. 7/2415 useless extension candidates. Maximal degree in co-relation 8661. Up to 551 conditions per place. [2022-11-20 09:27:37,567 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 163 selfloop transitions, 129 changer transitions 18/388 dead transitions. [2022-11-20 09:27:37,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 388 transitions, 4966 flow [2022-11-20 09:27:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:37,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:27:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1182 transitions. [2022-11-20 09:27:37,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567221510883483 [2022-11-20 09:27:37,571 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1182 transitions. [2022-11-20 09:27:37,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1182 transitions. [2022-11-20 09:27:37,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:37,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1182 transitions. [2022-11-20 09:27:37,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.45454545454545) internal successors, (1182), 11 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,578 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,578 INFO L175 Difference]: Start difference. First operand has 198 places, 273 transitions, 3276 flow. Second operand 11 states and 1182 transitions. [2022-11-20 09:27:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 388 transitions, 4966 flow [2022-11-20 09:27:37,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 388 transitions, 4746 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-20 09:27:37,643 INFO L231 Difference]: Finished difference. Result has 206 places, 285 transitions, 3750 flow [2022-11-20 09:27:37,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3750, PETRI_PLACES=206, PETRI_TRANSITIONS=285} [2022-11-20 09:27:37,644 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 70 predicate places. [2022-11-20 09:27:37,645 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 285 transitions, 3750 flow [2022-11-20 09:27:37,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.3) internal successors, (983), 10 states have internal predecessors, (983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,646 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:37,646 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] [2022-11-20 09:27:37,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 09:27:37,646 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:37,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:37,647 INFO L85 PathProgramCache]: Analyzing trace with hash 259850192, now seen corresponding path program 16 times [2022-11-20 09:27:37,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:37,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254177476] [2022-11-20 09:27:37,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:37,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:37,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254177476] [2022-11-20 09:27:37,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254177476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:37,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:37,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 09:27:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845017357] [2022-11-20 09:27:37,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:37,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:37,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:37,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:37,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:37,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:37,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 285 transitions, 3750 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:37,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:37,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:37,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:38,653 INFO L130 PetriNetUnfolder]: 490/1862 cut-off events. [2022-11-20 09:27:38,653 INFO L131 PetriNetUnfolder]: For 20997/21389 co-relation queries the response was YES. [2022-11-20 09:27:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9681 conditions, 1862 events. 490/1862 cut-off events. For 20997/21389 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 15019 event pairs, 72 based on Foata normal form. 213/2009 useless extension candidates. Maximal degree in co-relation 5576. Up to 347 conditions per place. [2022-11-20 09:27:38,674 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 76 selfloop transitions, 169 changer transitions 10/349 dead transitions. [2022-11-20 09:27:38,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 349 transitions, 4861 flow [2022-11-20 09:27:38,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:38,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 09:27:38,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2022-11-20 09:27:38,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.790241448692153 [2022-11-20 09:27:38,679 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2022-11-20 09:27:38,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2022-11-20 09:27:38,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:38,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2022-11-20 09:27:38,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,687 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,687 INFO L175 Difference]: Start difference. First operand has 206 places, 285 transitions, 3750 flow. Second operand 14 states and 1571 transitions. [2022-11-20 09:27:38,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 349 transitions, 4861 flow [2022-11-20 09:27:38,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 349 transitions, 4804 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-20 09:27:38,743 INFO L231 Difference]: Finished difference. Result has 215 places, 290 transitions, 4143 flow [2022-11-20 09:27:38,744 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4143, PETRI_PLACES=215, PETRI_TRANSITIONS=290} [2022-11-20 09:27:38,744 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 79 predicate places. [2022-11-20 09:27:38,744 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 290 transitions, 4143 flow [2022-11-20 09:27:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:38,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:38,745 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] [2022-11-20 09:27:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 09:27:38,746 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:38,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:38,746 INFO L85 PathProgramCache]: Analyzing trace with hash 910877144, now seen corresponding path program 17 times [2022-11-20 09:27:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433073244] [2022-11-20 09:27:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:38,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:39,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:39,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433073244] [2022-11-20 09:27:39,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433073244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:39,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:39,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 09:27:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605310439] [2022-11-20 09:27:39,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:39,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:39,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:39,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:39,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:39,056 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:39,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 290 transitions, 4143 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:39,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:39,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:39,831 INFO L130 PetriNetUnfolder]: 494/1919 cut-off events. [2022-11-20 09:27:39,832 INFO L131 PetriNetUnfolder]: For 25697/26123 co-relation queries the response was YES. [2022-11-20 09:27:39,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10571 conditions, 1919 events. 494/1919 cut-off events. For 25697/26123 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15810 event pairs, 81 based on Foata normal form. 246/2101 useless extension candidates. Maximal degree in co-relation 5858. Up to 355 conditions per place. [2022-11-20 09:27:39,845 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 66 selfloop transitions, 144 changer transitions 62/366 dead transitions. [2022-11-20 09:27:39,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 366 transitions, 5567 flow [2022-11-20 09:27:39,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:39,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 09:27:39,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1574 transitions. [2022-11-20 09:27:39,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7917505030181087 [2022-11-20 09:27:39,849 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1574 transitions. [2022-11-20 09:27:39,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1574 transitions. [2022-11-20 09:27:39,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:39,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1574 transitions. [2022-11-20 09:27:39,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.42857142857143) internal successors, (1574), 14 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,858 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,858 INFO L175 Difference]: Start difference. First operand has 215 places, 290 transitions, 4143 flow. Second operand 14 states and 1574 transitions. [2022-11-20 09:27:39,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 366 transitions, 5567 flow [2022-11-20 09:27:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 366 transitions, 5338 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:39,918 INFO L231 Difference]: Finished difference. Result has 222 places, 265 transitions, 3652 flow [2022-11-20 09:27:39,919 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3933, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3652, PETRI_PLACES=222, PETRI_TRANSITIONS=265} [2022-11-20 09:27:39,919 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 86 predicate places. [2022-11-20 09:27:39,920 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 265 transitions, 3652 flow [2022-11-20 09:27:39,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:39,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:39,921 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] [2022-11-20 09:27:39,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 09:27:39,921 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash 460744916, now seen corresponding path program 18 times [2022-11-20 09:27:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:39,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021392006] [2022-11-20 09:27:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:39,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:40,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:40,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021392006] [2022-11-20 09:27:40,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021392006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:40,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:40,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 09:27:40,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610978757] [2022-11-20 09:27:40,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:40,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:40,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:40,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:40,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:40,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 142 [2022-11-20 09:27:40,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 265 transitions, 3652 flow. Second operand has 11 states, 11 states have (on average 97.9090909090909) internal successors, (1077), 11 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:40,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:40,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 142 [2022-11-20 09:27:40,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:41,251 INFO L130 PetriNetUnfolder]: 738/2250 cut-off events. [2022-11-20 09:27:41,251 INFO L131 PetriNetUnfolder]: For 32174/32174 co-relation queries the response was YES. [2022-11-20 09:27:41,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13244 conditions, 2250 events. 738/2250 cut-off events. For 32174/32174 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 17654 event pairs, 189 based on Foata normal form. 7/2183 useless extension candidates. Maximal degree in co-relation 6852. Up to 462 conditions per place. [2022-11-20 09:27:41,269 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 157 selfloop transitions, 108 changer transitions 30/373 dead transitions. [2022-11-20 09:27:41,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 373 transitions, 5070 flow [2022-11-20 09:27:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 09:27:41,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-20 09:27:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1485 transitions. [2022-11-20 09:27:41,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7469818913480886 [2022-11-20 09:27:41,274 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1485 transitions. [2022-11-20 09:27:41,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1485 transitions. [2022-11-20 09:27:41,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:41,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1485 transitions. [2022-11-20 09:27:41,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 106.07142857142857) internal successors, (1485), 14 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,282 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,282 INFO L175 Difference]: Start difference. First operand has 222 places, 265 transitions, 3652 flow. Second operand 14 states and 1485 transitions. [2022-11-20 09:27:41,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 373 transitions, 5070 flow [2022-11-20 09:27:41,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 373 transitions, 4870 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-11-20 09:27:41,359 INFO L231 Difference]: Finished difference. Result has 225 places, 262 transitions, 3629 flow [2022-11-20 09:27:41,360 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3629, PETRI_PLACES=225, PETRI_TRANSITIONS=262} [2022-11-20 09:27:41,360 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 89 predicate places. [2022-11-20 09:27:41,361 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 262 transitions, 3629 flow [2022-11-20 09:27:41,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 97.9090909090909) internal successors, (1077), 11 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,361 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:41,362 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] [2022-11-20 09:27:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:27:41,362 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -2079245562, now seen corresponding path program 19 times [2022-11-20 09:27:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:41,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842354635] [2022-11-20 09:27:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:41,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:41,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842354635] [2022-11-20 09:27:41,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842354635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:41,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:41,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 09:27:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713163233] [2022-11-20 09:27:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 09:27:41,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:41,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 09:27:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-20 09:27:41,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:41,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 262 transitions, 3629 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:41,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:41,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:41,938 INFO L130 PetriNetUnfolder]: 79/496 cut-off events. [2022-11-20 09:27:41,939 INFO L131 PetriNetUnfolder]: For 6533/6684 co-relation queries the response was YES. [2022-11-20 09:27:41,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3040 conditions, 496 events. 79/496 cut-off events. For 6533/6684 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2604 event pairs, 4 based on Foata normal form. 122/614 useless extension candidates. Maximal degree in co-relation 2594. Up to 100 conditions per place. [2022-11-20 09:27:41,943 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 40 selfloop transitions, 26 changer transitions 58/214 dead transitions. [2022-11-20 09:27:41,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 214 transitions, 2675 flow [2022-11-20 09:27:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1112 transitions. [2022-11-20 09:27:41,946 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7830985915492957 [2022-11-20 09:27:41,946 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1112 transitions. [2022-11-20 09:27:41,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1112 transitions. [2022-11-20 09:27:41,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:41,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1112 transitions. [2022-11-20 09:27:41,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 111.2) internal successors, (1112), 10 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,952 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,952 INFO L175 Difference]: Start difference. First operand has 225 places, 262 transitions, 3629 flow. Second operand 10 states and 1112 transitions. [2022-11-20 09:27:41,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 214 transitions, 2675 flow [2022-11-20 09:27:41,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 214 transitions, 2350 flow, removed 21 selfloop flow, removed 18 redundant places. [2022-11-20 09:27:41,981 INFO L231 Difference]: Finished difference. Result has 216 places, 144 transitions, 909 flow [2022-11-20 09:27:41,982 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=909, PETRI_PLACES=216, PETRI_TRANSITIONS=144} [2022-11-20 09:27:41,983 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 80 predicate places. [2022-11-20 09:27:41,983 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 144 transitions, 909 flow [2022-11-20 09:27:41,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:41,983 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:41,984 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] [2022-11-20 09:27:41,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 09:27:41,986 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:41,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1072550218, now seen corresponding path program 20 times [2022-11-20 09:27:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:41,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670761440] [2022-11-20 09:27:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:42,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670761440] [2022-11-20 09:27:42,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670761440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:42,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:42,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 09:27:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236943378] [2022-11-20 09:27:42,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 09:27:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 09:27:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-20 09:27:42,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:42,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 144 transitions, 909 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:42,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:42,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:42,476 INFO L130 PetriNetUnfolder]: 18/201 cut-off events. [2022-11-20 09:27:42,476 INFO L131 PetriNetUnfolder]: For 1550/1559 co-relation queries the response was YES. [2022-11-20 09:27:42,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 201 events. 18/201 cut-off events. For 1550/1559 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 364 event pairs, 1 based on Foata normal form. 12/212 useless extension candidates. Maximal degree in co-relation 623. Up to 19 conditions per place. [2022-11-20 09:27:42,478 INFO L137 encePairwiseOnDemand]: 130/142 looper letters, 33 selfloop transitions, 18 changer transitions 12/153 dead transitions. [2022-11-20 09:27:42,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 153 transitions, 1065 flow [2022-11-20 09:27:42,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:27:42,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:27:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2022-11-20 09:27:42,481 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2022-11-20 09:27:42,481 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2022-11-20 09:27:42,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2022-11-20 09:27:42,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:42,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2022-11-20 09:27:42,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,487 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,487 INFO L175 Difference]: Start difference. First operand has 216 places, 144 transitions, 909 flow. Second operand 10 states and 1089 transitions. [2022-11-20 09:27:42,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 153 transitions, 1065 flow [2022-11-20 09:27:42,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 153 transitions, 751 flow, removed 21 selfloop flow, removed 41 redundant places. [2022-11-20 09:27:42,496 INFO L231 Difference]: Finished difference. Result has 174 places, 132 transitions, 492 flow [2022-11-20 09:27:42,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=492, PETRI_PLACES=174, PETRI_TRANSITIONS=132} [2022-11-20 09:27:42,497 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, 38 predicate places. [2022-11-20 09:27:42,497 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 132 transitions, 492 flow [2022-11-20 09:27:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:27:42,498 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] [2022-11-20 09:27:42,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 09:27:42,499 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-20 09:27:42,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:27:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2016721116, now seen corresponding path program 21 times [2022-11-20 09:27:42,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:27:42,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735555960] [2022-11-20 09:27:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:27:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:27:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:27:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:27:42,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:27:42,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735555960] [2022-11-20 09:27:42,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735555960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:27:42,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:27:42,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 09:27:42,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956705266] [2022-11-20 09:27:42,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:27:42,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:27:42,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:27:42,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:27:42,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:27:42,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-11-20 09:27:42,787 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 132 transitions, 492 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:27:42,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-11-20 09:27:42,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:27:42,921 INFO L130 PetriNetUnfolder]: 9/126 cut-off events. [2022-11-20 09:27:42,922 INFO L131 PetriNetUnfolder]: For 299/301 co-relation queries the response was YES. [2022-11-20 09:27:42,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 126 events. 9/126 cut-off events. For 299/301 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 139 event pairs, 1 based on Foata normal form. 4/129 useless extension candidates. Maximal degree in co-relation 329. Up to 13 conditions per place. [2022-11-20 09:27:42,922 INFO L137 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2022-11-20 09:27:42,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 110 transitions, 509 flow [2022-11-20 09:27:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:27:42,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:27:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1170 transitions. [2022-11-20 09:27:42,925 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7490396927016645 [2022-11-20 09:27:42,925 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1170 transitions. [2022-11-20 09:27:42,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1170 transitions. [2022-11-20 09:27:42,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:27:42,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1170 transitions. [2022-11-20 09:27:42,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 106.36363636363636) internal successors, (1170), 11 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,932 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,932 INFO L175 Difference]: Start difference. First operand has 174 places, 132 transitions, 492 flow. Second operand 11 states and 1170 transitions. [2022-11-20 09:27:42,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 110 transitions, 509 flow [2022-11-20 09:27:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 110 transitions, 402 flow, removed 3 selfloop flow, removed 28 redundant places. [2022-11-20 09:27:42,935 INFO L231 Difference]: Finished difference. Result has 128 places, 0 transitions, 0 flow [2022-11-20 09:27:42,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=128, PETRI_TRANSITIONS=0} [2022-11-20 09:27:42,936 INFO L288 CegarLoopForPetriNet]: 136 programPoint places, -8 predicate places. [2022-11-20 09:27:42,936 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 0 transitions, 0 flow [2022-11-20 09:27:42,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:27:42,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-20 09:27:42,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-20 09:27:42,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-20 09:27:42,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-20 09:27:42,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-20 09:27:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 09:27:42,941 INFO L444 BasicCegarLoop]: Path program histogram: [21] [2022-11-20 09:27:42,946 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:27:42,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:27:42,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:42 BasicIcfg [2022-11-20 09:27:42,952 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:27:42,952 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:27:42,952 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:27:42,952 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:27:42,953 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:13" (3/4) ... [2022-11-20 09:27:42,956 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:27:42,962 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:27:42,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:27:42,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 09:27:42,963 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-11-20 09:27:42,970 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-11-20 09:27:42,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:27:42,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:27:42,971 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:27:43,011 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:27:43,011 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:27:43,012 INFO L158 Benchmark]: Toolchain (without parser) took 31181.48ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 125.4MB in the beginning and 971.3MB in the end (delta: -845.9MB). Peak memory consumption was 196.0MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,012 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:43,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.99ms. Allocated memory is still 163.6MB. Free memory was 124.7MB in the beginning and 128.8MB in the end (delta: -4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.97ms. Allocated memory is still 163.6MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,013 INFO L158 Benchmark]: Boogie Preprocessor took 60.88ms. Allocated memory is still 163.6MB. Free memory was 126.8MB in the beginning and 125.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:27:43,014 INFO L158 Benchmark]: RCFGBuilder took 781.67ms. Allocated memory is still 163.6MB. Free memory was 125.4MB in the beginning and 102.4MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,014 INFO L158 Benchmark]: TraceAbstraction took 29820.80ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 101.6MB in the beginning and 974.4MB in the end (delta: -872.8MB). Peak memory consumption was 170.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,014 INFO L158 Benchmark]: Witness Printer took 59.22ms. Allocated memory is still 1.2GB. Free memory was 974.4MB in the beginning and 971.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 09:27:43,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 119.5MB. Free memory is still 87.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.99ms. Allocated memory is still 163.6MB. Free memory was 124.7MB in the beginning and 128.8MB in the end (delta: -4.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.97ms. Allocated memory is still 163.6MB. Free memory was 128.8MB in the beginning and 126.8MB in the end (delta: 2.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.88ms. Allocated memory is still 163.6MB. Free memory was 126.8MB in the beginning and 125.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 781.67ms. Allocated memory is still 163.6MB. Free memory was 125.4MB in the beginning and 102.4MB in the end (delta: 23.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 29820.80ms. Allocated memory was 163.6MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 101.6MB in the beginning and 974.4MB in the end (delta: -872.8MB). Peak memory consumption was 170.2MB. Max. memory is 16.1GB. * Witness Printer took 59.22ms. Allocated memory is still 1.2GB. Free memory was 974.4MB in the beginning and 971.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.6s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 19.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1460 SdHoareTripleChecker+Valid, 4.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1460 mSDsluCounter, 1164 SdHoareTripleChecker+Invalid, 3.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 825 mSDsCounter, 644 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5463 IncrementalHoareTripleChecker+Invalid, 6107 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 644 mSolverCounterUnsat, 339 mSDtfsCounter, 5463 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 289 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4143occurred in iteration=16, InterpolantAutomatonStates: 213, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 2541 NumberOfCodeBlocks, 2541 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 2520 ConstructedInterpolants, 0 QuantifiedInterpolants, 6705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:27:43,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_989695e5-d86f-4676-95f8-803300e38522/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE