./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ --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 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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-dbf71c6-m [2022-10-17 10:43:13,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:43:13,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:43:13,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:43:13,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:43:13,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:43:13,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:43:13,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:43:13,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:43:13,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:43:13,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:43:13,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:43:13,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:43:13,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:43:13,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:43:13,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:43:13,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:43:13,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:43:13,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:43:13,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:43:13,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:43:13,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:43:13,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:43:13,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:43:13,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:43:13,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:43:13,231 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:43:13,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:43:13,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:43:13,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:43:13,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:43:13,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:43:13,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:43:13,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:43:13,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:43:13,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:43:13,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:43:13,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:43:13,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:43:13,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:43:13,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:43:13,251 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:43:13,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:43:13,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:43:13,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:43:13,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:43:13,329 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:43:13,331 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:43:13,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:43:13,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:43:13,332 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:43:13,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:43:13,334 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:43:13,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:43:13,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:43:13,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:43:13,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:43:13,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:43:13,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:43:13,336 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:43:13,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:43:13,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:43:13,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:43:13,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:43:13,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:43:13,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:43:13,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:13,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:43:13,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:43:13,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:43:13,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:43:13,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:43:13,340 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:43:13,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:43:13,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:43:13,342 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_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-10-17 10:43:13,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:43:13,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:43:13,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:43:13,665 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:43:13,667 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:43:13,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-10-17 10:43:13,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/data/ab002e14c/f5e3bf80ecf848baa5ab9cd15cf4709b/FLAG4035ecb39 [2022-10-17 10:43:14,256 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:43:14,269 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-10-17 10:43:14,277 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/data/ab002e14c/f5e3bf80ecf848baa5ab9cd15cf4709b/FLAG4035ecb39 [2022-10-17 10:43:14,596 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/data/ab002e14c/f5e3bf80ecf848baa5ab9cd15cf4709b [2022-10-17 10:43:14,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:43:14,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:43:14,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:14,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:43:14,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:43:14,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:14,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db0c16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14, skipping insertion in model container [2022-10-17 10:43:14,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:14,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:43:14,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:43:14,888 WARN L230 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_346b50ee-d29b-43c6-a7d0-7eeea0434527/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-10-17 10:43:14,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:14,910 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:43:14,969 WARN L230 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_346b50ee-d29b-43c6-a7d0-7eeea0434527/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-10-17 10:43:14,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:43:14,991 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:43:14,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14 WrapperNode [2022-10-17 10:43:14,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:43:14,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:14,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:43:14,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:43:15,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,047 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 283 [2022-10-17 10:43:15,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:43:15,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:43:15,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:43:15,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:43:15,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:43:15,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:43:15,142 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:43:15,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:43:15,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (1/1) ... [2022-10-17 10:43:15,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:43:15,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:15,183 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:43:15,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:43:15,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:43:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:43:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:43:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:43:15,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:43:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:43:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:43:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:43:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:43:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:43:15,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:43:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:43:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:43:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:43:15,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:43:15,245 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:43:15,418 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:43:15,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:43:16,129 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:43:16,147 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:43:16,148 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-10-17 10:43:16,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:16 BoogieIcfgContainer [2022-10-17 10:43:16,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:43:16,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:43:16,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:43:16,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:43:16,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:43:14" (1/3) ... [2022-10-17 10:43:16,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b16052a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:16, skipping insertion in model container [2022-10-17 10:43:16,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:43:14" (2/3) ... [2022-10-17 10:43:16,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b16052a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:43:16, skipping insertion in model container [2022-10-17 10:43:16,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:43:16" (3/3) ... [2022-10-17 10:43:16,161 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-10-17 10:43:16,184 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:43:16,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:43:16,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:43:16,194 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:43:16,364 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:43:16,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 371 transitions, 766 flow [2022-10-17 10:43:16,679 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2022-10-17 10:43:16,679 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:43:16,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 368 events. 31/368 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 623 event pairs, 0 based on Foata normal form. 0/336 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-10-17 10:43:16,689 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 371 transitions, 766 flow [2022-10-17 10:43:16,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 336 places, 357 transitions, 732 flow [2022-10-17 10:43:16,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:43:16,730 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;@249cad3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:43:16,731 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:43:16,854 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2022-10-17 10:43:16,855 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:43:16,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:16,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:16,857 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 243991727, now seen corresponding path program 1 times [2022-10-17 10:43:16,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:16,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521732727] [2022-10-17 10:43:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:16,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:17,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:17,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521732727] [2022-10-17 10:43:17,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521732727] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:17,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:17,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:43:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183603917] [2022-10-17 10:43:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:17,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:43:17,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:17,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:43:17,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:43:17,350 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 371 [2022-10-17 10:43:17,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 357 transitions, 732 flow. Second operand has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:17,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:17,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 371 [2022-10-17 10:43:17,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:17,478 INFO L130 PetriNetUnfolder]: 9/335 cut-off events. [2022-10-17 10:43:17,478 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-10-17 10:43:17,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 335 events. 9/335 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 611 event pairs, 0 based on Foata normal form. 35/345 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-10-17 10:43:17,486 INFO L137 encePairwiseOnDemand]: 349/371 looper letters, 6 selfloop transitions, 0 changer transitions 7/335 dead transitions. [2022-10-17 10:43:17,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 335 transitions, 700 flow [2022-10-17 10:43:17,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:43:17,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:43:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 712 transitions. [2022-10-17 10:43:17,504 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9595687331536388 [2022-10-17 10:43:17,505 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 712 transitions. [2022-10-17 10:43:17,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 712 transitions. [2022-10-17 10:43:17,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:17,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 712 transitions. [2022-10-17 10:43:17,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 356.0) internal successors, (712), 2 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:17,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:17,527 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:17,529 INFO L175 Difference]: Start difference. First operand has 336 places, 357 transitions, 732 flow. Second operand 2 states and 712 transitions. [2022-10-17 10:43:17,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 335 transitions, 700 flow [2022-10-17 10:43:17,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 335 transitions, 688 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:43:17,547 INFO L231 Difference]: Finished difference. Result has 331 places, 328 transitions, 662 flow [2022-10-17 10:43:17,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=662, PETRI_PLACES=331, PETRI_TRANSITIONS=328} [2022-10-17 10:43:17,555 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-10-17 10:43:17,556 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 328 transitions, 662 flow [2022-10-17 10:43:17,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 346.0) internal successors, (692), 2 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:17,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:17,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:43:17,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 267830185, now seen corresponding path program 1 times [2022-10-17 10:43:17,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837399318] [2022-10-17 10:43:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:17,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:17,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:17,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837399318] [2022-10-17 10:43:17,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837399318] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:17,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:18,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:43:18,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841553435] [2022-10-17 10:43:18,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:18,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:43:18,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:43:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:43:18,012 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-10-17 10:43:18,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 328 transitions, 662 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:18,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-10-17 10:43:18,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:18,430 INFO L130 PetriNetUnfolder]: 62/1083 cut-off events. [2022-10-17 10:43:18,430 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-10-17 10:43:18,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1230 conditions, 1083 events. 62/1083 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 5757 event pairs, 18 based on Foata normal form. 0/1002 useless extension candidates. Maximal degree in co-relation 1227. Up to 55 conditions per place. [2022-10-17 10:43:18,451 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 33 selfloop transitions, 4 changer transitions 0/348 dead transitions. [2022-10-17 10:43:18,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 348 transitions, 788 flow [2022-10-17 10:43:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:43:18,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:43:18,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2022-10-17 10:43:18,459 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9126684636118598 [2022-10-17 10:43:18,459 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2022-10-17 10:43:18,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2022-10-17 10:43:18,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:18,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2022-10-17 10:43:18,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,478 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,478 INFO L175 Difference]: Start difference. First operand has 331 places, 328 transitions, 662 flow. Second operand 5 states and 1693 transitions. [2022-10-17 10:43:18,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 348 transitions, 788 flow [2022-10-17 10:43:18,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 348 transitions, 788 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:43:18,489 INFO L231 Difference]: Finished difference. Result has 331 places, 331 transitions, 691 flow [2022-10-17 10:43:18,490 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=691, PETRI_PLACES=331, PETRI_TRANSITIONS=331} [2022-10-17 10:43:18,491 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, -5 predicate places. [2022-10-17 10:43:18,491 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 331 transitions, 691 flow [2022-10-17 10:43:18,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:18,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:18,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:43:18,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 992335791, now seen corresponding path program 1 times [2022-10-17 10:43:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:18,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931270172] [2022-10-17 10:43:18,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:18,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:18,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931270172] [2022-10-17 10:43:18,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931270172] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:18,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:18,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:43:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124489329] [2022-10-17 10:43:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:18,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:43:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:43:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:43:18,846 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-10-17 10:43:18,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 331 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:18,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:18,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-10-17 10:43:18,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:19,402 INFO L130 PetriNetUnfolder]: 91/1204 cut-off events. [2022-10-17 10:43:19,402 INFO L131 PetriNetUnfolder]: For 77/145 co-relation queries the response was YES. [2022-10-17 10:43:19,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 1204 events. 91/1204 cut-off events. For 77/145 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7663 event pairs, 36 based on Foata normal form. 1/1100 useless extension candidates. Maximal degree in co-relation 1428. Up to 99 conditions per place. [2022-10-17 10:43:19,438 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 31 selfloop transitions, 4 changer transitions 0/349 dead transitions. [2022-10-17 10:43:19,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 349 transitions, 807 flow [2022-10-17 10:43:19,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:43:19,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:43:19,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1691 transitions. [2022-10-17 10:43:19,445 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9115902964959569 [2022-10-17 10:43:19,445 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1691 transitions. [2022-10-17 10:43:19,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1691 transitions. [2022-10-17 10:43:19,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:19,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1691 transitions. [2022-10-17 10:43:19,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:19,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:19,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:19,463 INFO L175 Difference]: Start difference. First operand has 331 places, 331 transitions, 691 flow. Second operand 5 states and 1691 transitions. [2022-10-17 10:43:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 349 transitions, 807 flow [2022-10-17 10:43:19,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 349 transitions, 807 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:43:19,473 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 720 flow [2022-10-17 10:43:19,474 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=720, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-10-17 10:43:19,476 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 2 predicate places. [2022-10-17 10:43:19,476 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 720 flow [2022-10-17 10:43:19,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:19,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:19,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:43:19,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2021205813, now seen corresponding path program 1 times [2022-10-17 10:43:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930585945] [2022-10-17 10:43:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:43:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930585945] [2022-10-17 10:43:19,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930585945] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:19,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:19,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:43:19,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128575907] [2022-10-17 10:43:19,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:43:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:19,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:43:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:43:19,713 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 371 [2022-10-17 10:43:19,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:19,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:19,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 371 [2022-10-17 10:43:19,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:20,033 INFO L130 PetriNetUnfolder]: 7/538 cut-off events. [2022-10-17 10:43:20,033 INFO L131 PetriNetUnfolder]: For 25/35 co-relation queries the response was YES. [2022-10-17 10:43:20,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 538 events. 7/538 cut-off events. For 25/35 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1605 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 637. Up to 56 conditions per place. [2022-10-17 10:43:20,043 INFO L137 encePairwiseOnDemand]: 356/371 looper letters, 42 selfloop transitions, 12 changer transitions 0/346 dead transitions. [2022-10-17 10:43:20,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 346 transitions, 852 flow [2022-10-17 10:43:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:43:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:43:20,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1587 transitions. [2022-10-17 10:43:20,049 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8555256064690027 [2022-10-17 10:43:20,049 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1587 transitions. [2022-10-17 10:43:20,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1587 transitions. [2022-10-17 10:43:20,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:20,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1587 transitions. [2022-10-17 10:43:20,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 317.4) internal successors, (1587), 5 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:20,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:20,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:20,065 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 720 flow. Second operand 5 states and 1587 transitions. [2022-10-17 10:43:20,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 346 transitions, 852 flow [2022-10-17 10:43:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 346 transitions, 852 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:43:20,076 INFO L231 Difference]: Finished difference. Result has 343 places, 337 transitions, 768 flow [2022-10-17 10:43:20,077 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=768, PETRI_PLACES=343, PETRI_TRANSITIONS=337} [2022-10-17 10:43:20,078 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 7 predicate places. [2022-10-17 10:43:20,078 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 337 transitions, 768 flow [2022-10-17 10:43:20,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:20,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:20,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:20,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:43:20,081 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:20,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:20,082 INFO L85 PathProgramCache]: Analyzing trace with hash 126560074, now seen corresponding path program 1 times [2022-10-17 10:43:20,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:20,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019792848] [2022-10-17 10:43:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:20,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:43:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:20,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019792848] [2022-10-17 10:43:20,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019792848] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:20,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042568371] [2022-10-17 10:43:20,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:20,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:20,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:20,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:20,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:43:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:20,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:43:20,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:43:20,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:43:20,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:43:20,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042568371] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:43:20,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:43:20,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-10-17 10:43:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307410853] [2022-10-17 10:43:20,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:43:20,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:43:20,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:20,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:43:20,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:43:20,887 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 371 [2022-10-17 10:43:20,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 337 transitions, 768 flow. Second operand has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:20,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:20,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 371 [2022-10-17 10:43:20,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:21,439 INFO L130 PetriNetUnfolder]: 7/565 cut-off events. [2022-10-17 10:43:21,439 INFO L131 PetriNetUnfolder]: For 37/47 co-relation queries the response was YES. [2022-10-17 10:43:21,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 565 events. 7/565 cut-off events. For 37/47 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1579 event pairs, 0 based on Foata normal form. 6/552 useless extension candidates. Maximal degree in co-relation 712. Up to 47 conditions per place. [2022-10-17 10:43:21,452 INFO L137 encePairwiseOnDemand]: 347/371 looper letters, 45 selfloop transitions, 33 changer transitions 0/367 dead transitions. [2022-10-17 10:43:21,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 367 transitions, 990 flow [2022-10-17 10:43:21,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:43:21,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-10-17 10:43:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3417 transitions. [2022-10-17 10:43:21,465 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8372947806910072 [2022-10-17 10:43:21,465 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3417 transitions. [2022-10-17 10:43:21,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3417 transitions. [2022-10-17 10:43:21,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:21,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3417 transitions. [2022-10-17 10:43:21,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 310.6363636363636) internal successors, (3417), 11 states have internal predecessors, (3417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:21,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:21,493 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 371.0) internal successors, (4452), 12 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:21,493 INFO L175 Difference]: Start difference. First operand has 343 places, 337 transitions, 768 flow. Second operand 11 states and 3417 transitions. [2022-10-17 10:43:21,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 367 transitions, 990 flow [2022-10-17 10:43:21,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 367 transitions, 972 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-10-17 10:43:21,508 INFO L231 Difference]: Finished difference. Result has 353 places, 355 transitions, 917 flow [2022-10-17 10:43:21,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=917, PETRI_PLACES=353, PETRI_TRANSITIONS=355} [2022-10-17 10:43:21,510 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 17 predicate places. [2022-10-17 10:43:21,510 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 355 transitions, 917 flow [2022-10-17 10:43:21,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 307.3333333333333) internal successors, (4610), 15 states have internal predecessors, (4610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:21,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:21,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:21,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:43:21,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:21,737 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:21,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:21,738 INFO L85 PathProgramCache]: Analyzing trace with hash -95340082, now seen corresponding path program 2 times [2022-10-17 10:43:21,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:21,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229867124] [2022-10-17 10:43:21,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:21,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-10-17 10:43:22,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229867124] [2022-10-17 10:43:22,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229867124] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33631234] [2022-10-17 10:43:22,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:43:22,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:22,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:22,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:22,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:43:22,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:43:22,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:43:22,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:43:22,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:43:22,484 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:43:22,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33631234] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:22,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:43:22,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-10-17 10:43:22,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122719693] [2022-10-17 10:43:22,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:22,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:22,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:22,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:22,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:43:22,496 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 371 [2022-10-17 10:43:22,498 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 355 transitions, 917 flow. Second operand has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:22,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:22,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 371 [2022-10-17 10:43:22,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:23,192 INFO L130 PetriNetUnfolder]: 164/1673 cut-off events. [2022-10-17 10:43:23,192 INFO L131 PetriNetUnfolder]: For 170/236 co-relation queries the response was YES. [2022-10-17 10:43:23,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2207 conditions, 1673 events. 164/1673 cut-off events. For 170/236 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 11925 event pairs, 60 based on Foata normal form. 9/1505 useless extension candidates. Maximal degree in co-relation 2193. Up to 250 conditions per place. [2022-10-17 10:43:23,220 INFO L137 encePairwiseOnDemand]: 363/371 looper letters, 46 selfloop transitions, 5 changer transitions 5/369 dead transitions. [2022-10-17 10:43:23,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 369 transitions, 1062 flow [2022-10-17 10:43:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:43:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-10-17 10:43:23,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1851 transitions. [2022-10-17 10:43:23,227 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8315363881401617 [2022-10-17 10:43:23,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1851 transitions. [2022-10-17 10:43:23,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1851 transitions. [2022-10-17 10:43:23,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:23,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1851 transitions. [2022-10-17 10:43:23,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 308.5) internal successors, (1851), 6 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:23,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:23,243 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 371.0) internal successors, (2597), 7 states have internal predecessors, (2597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:23,243 INFO L175 Difference]: Start difference. First operand has 353 places, 355 transitions, 917 flow. Second operand 6 states and 1851 transitions. [2022-10-17 10:43:23,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 369 transitions, 1062 flow [2022-10-17 10:43:23,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 369 transitions, 1037 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-10-17 10:43:23,257 INFO L231 Difference]: Finished difference. Result has 359 places, 359 transitions, 931 flow [2022-10-17 10:43:23,258 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=931, PETRI_PLACES=359, PETRI_TRANSITIONS=359} [2022-10-17 10:43:23,259 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 23 predicate places. [2022-10-17 10:43:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 359 transitions, 931 flow [2022-10-17 10:43:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 305.5) internal successors, (1833), 6 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:23,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:23,262 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:23,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:43:23,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:23,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:23,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:23,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1902012858, now seen corresponding path program 1 times [2022-10-17 10:43:23,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:23,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738371594] [2022-10-17 10:43:23,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:23,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:43:23,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:23,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738371594] [2022-10-17 10:43:23,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738371594] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:23,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:23,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:43:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216969738] [2022-10-17 10:43:23,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:23,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:43:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:23,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:43:23,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:43:23,733 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 371 [2022-10-17 10:43:23,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 359 transitions, 931 flow. Second operand has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:23,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:23,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 371 [2022-10-17 10:43:23,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:24,518 INFO L130 PetriNetUnfolder]: 234/2062 cut-off events. [2022-10-17 10:43:24,519 INFO L131 PetriNetUnfolder]: For 293/371 co-relation queries the response was YES. [2022-10-17 10:43:24,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915 conditions, 2062 events. 234/2062 cut-off events. For 293/371 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 17495 event pairs, 108 based on Foata normal form. 0/1818 useless extension candidates. Maximal degree in co-relation 2897. Up to 263 conditions per place. [2022-10-17 10:43:24,554 INFO L137 encePairwiseOnDemand]: 366/371 looper letters, 27 selfloop transitions, 4 changer transitions 2/374 dead transitions. [2022-10-17 10:43:24,554 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 1032 flow [2022-10-17 10:43:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:43:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-10-17 10:43:24,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1689 transitions. [2022-10-17 10:43:24,560 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9105121293800539 [2022-10-17 10:43:24,560 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1689 transitions. [2022-10-17 10:43:24,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1689 transitions. [2022-10-17 10:43:24,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:24,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1689 transitions. [2022-10-17 10:43:24,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 337.8) internal successors, (1689), 5 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:24,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:24,573 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 371.0) internal successors, (2226), 6 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:24,573 INFO L175 Difference]: Start difference. First operand has 359 places, 359 transitions, 931 flow. Second operand 5 states and 1689 transitions. [2022-10-17 10:43:24,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 1032 flow [2022-10-17 10:43:24,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 374 transitions, 1024 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-10-17 10:43:24,586 INFO L231 Difference]: Finished difference. Result has 361 places, 361 transitions, 947 flow [2022-10-17 10:43:24,587 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=918, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=947, PETRI_PLACES=361, PETRI_TRANSITIONS=361} [2022-10-17 10:43:24,588 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 25 predicate places. [2022-10-17 10:43:24,588 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 361 transitions, 947 flow [2022-10-17 10:43:24,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 333.5) internal successors, (1334), 4 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:24,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:24,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:43:24,590 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:24,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1644683833, now seen corresponding path program 1 times [2022-10-17 10:43:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:24,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807914132] [2022-10-17 10:43:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:24,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:24,958 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:43:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807914132] [2022-10-17 10:43:24,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807914132] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357058276] [2022-10-17 10:43:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:24,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:24,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:24,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:24,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:43:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:25,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:43:25,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-17 10:43:25,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:43:25,555 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-10-17 10:43:25,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357058276] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:43:25,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 10:43:25,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 24 [2022-10-17 10:43:25,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164896179] [2022-10-17 10:43:25,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 10:43:25,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-10-17 10:43:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-10-17 10:43:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:43:25,572 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 371 [2022-10-17 10:43:25,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 361 transitions, 947 flow. Second operand has 24 states, 24 states have (on average 297.0) internal successors, (7128), 24 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:25,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:25,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 371 [2022-10-17 10:43:25,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:27,460 INFO L130 PetriNetUnfolder]: 354/2839 cut-off events. [2022-10-17 10:43:27,464 INFO L131 PetriNetUnfolder]: For 519/601 co-relation queries the response was YES. [2022-10-17 10:43:27,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4257 conditions, 2839 events. 354/2839 cut-off events. For 519/601 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 26779 event pairs, 120 based on Foata normal form. 27/2556 useless extension candidates. Maximal degree in co-relation 4239. Up to 310 conditions per place. [2022-10-17 10:43:27,514 INFO L137 encePairwiseOnDemand]: 340/371 looper letters, 93 selfloop transitions, 59 changer transitions 2/434 dead transitions. [2022-10-17 10:43:27,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 434 transitions, 1509 flow [2022-10-17 10:43:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:43:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-10-17 10:43:27,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7145 transitions. [2022-10-17 10:43:27,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8024483378256964 [2022-10-17 10:43:27,536 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7145 transitions. [2022-10-17 10:43:27,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7145 transitions. [2022-10-17 10:43:27,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:27,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7145 transitions. [2022-10-17 10:43:27,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 297.7083333333333) internal successors, (7145), 24 states have internal predecessors, (7145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 371.0) internal successors, (9275), 25 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:27,583 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 371.0) internal successors, (9275), 25 states have internal predecessors, (9275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:27,583 INFO L175 Difference]: Start difference. First operand has 361 places, 361 transitions, 947 flow. Second operand 24 states and 7145 transitions. [2022-10-17 10:43:27,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 434 transitions, 1509 flow [2022-10-17 10:43:27,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 434 transitions, 1509 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:43:27,601 INFO L231 Difference]: Finished difference. Result has 391 places, 387 transitions, 1267 flow [2022-10-17 10:43:27,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1267, PETRI_PLACES=391, PETRI_TRANSITIONS=387} [2022-10-17 10:43:27,606 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 55 predicate places. [2022-10-17 10:43:27,606 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 387 transitions, 1267 flow [2022-10-17 10:43:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 297.0) internal successors, (7128), 24 states have internal predecessors, (7128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:27,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:27,609 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:27,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:43:27,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:27,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:27,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1893064209, now seen corresponding path program 1 times [2022-10-17 10:43:27,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:27,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022613779] [2022-10-17 10:43:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:27,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-10-17 10:43:28,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:28,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022613779] [2022-10-17 10:43:28,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022613779] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:28,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:28,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:43:28,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772034725] [2022-10-17 10:43:28,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:43:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:43:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:43:28,619 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-10-17 10:43:28,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 387 transitions, 1267 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:28,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:28,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-10-17 10:43:28,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:33,583 INFO L130 PetriNetUnfolder]: 2285/13008 cut-off events. [2022-10-17 10:43:33,583 INFO L131 PetriNetUnfolder]: For 4861/5505 co-relation queries the response was YES. [2022-10-17 10:43:33,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21374 conditions, 13008 events. 2285/13008 cut-off events. For 4861/5505 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 157267 event pairs, 1183 based on Foata normal form. 205/12039 useless extension candidates. Maximal degree in co-relation 21348. Up to 2041 conditions per place. [2022-10-17 10:43:33,798 INFO L137 encePairwiseOnDemand]: 362/371 looper letters, 91 selfloop transitions, 17 changer transitions 5/468 dead transitions. [2022-10-17 10:43:33,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 468 transitions, 1783 flow [2022-10-17 10:43:33,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:43:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:43:33,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3008 transitions. [2022-10-17 10:43:33,810 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.900868523510033 [2022-10-17 10:43:33,810 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3008 transitions. [2022-10-17 10:43:33,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3008 transitions. [2022-10-17 10:43:33,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:33,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3008 transitions. [2022-10-17 10:43:33,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 334.22222222222223) internal successors, (3008), 9 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:33,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:33,831 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 371.0) internal successors, (3710), 10 states have internal predecessors, (3710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:33,832 INFO L175 Difference]: Start difference. First operand has 391 places, 387 transitions, 1267 flow. Second operand 9 states and 3008 transitions. [2022-10-17 10:43:33,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 468 transitions, 1783 flow [2022-10-17 10:43:33,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 468 transitions, 1706 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-10-17 10:43:33,940 INFO L231 Difference]: Finished difference. Result has 396 places, 401 transitions, 1320 flow [2022-10-17 10:43:33,941 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1320, PETRI_PLACES=396, PETRI_TRANSITIONS=401} [2022-10-17 10:43:33,942 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 60 predicate places. [2022-10-17 10:43:33,942 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 401 transitions, 1320 flow [2022-10-17 10:43:33,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:33,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:33,944 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:33,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:43:33,944 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1728468819, now seen corresponding path program 2 times [2022-10-17 10:43:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:33,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909522167] [2022-10-17 10:43:33,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:33,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:34,738 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-10-17 10:43:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:34,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909522167] [2022-10-17 10:43:34,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909522167] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:43:34,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848917175] [2022-10-17 10:43:34,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:43:34,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:43:34,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:43:34,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:43:34,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:43:34,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:43:34,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:43:34,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:43:34,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:43:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-10-17 10:43:35,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:43:35,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848917175] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:35,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:43:35,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-10-17 10:43:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183241339] [2022-10-17 10:43:35,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:35,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:43:35,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:35,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:43:35,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:43:35,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 371 [2022-10-17 10:43:35,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 401 transitions, 1320 flow. Second operand has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:35,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:35,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 371 [2022-10-17 10:43:35,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:43:40,938 INFO L130 PetriNetUnfolder]: 2458/16995 cut-off events. [2022-10-17 10:43:40,939 INFO L131 PetriNetUnfolder]: For 3321/3863 co-relation queries the response was YES. [2022-10-17 10:43:41,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26560 conditions, 16995 events. 2458/16995 cut-off events. For 3321/3863 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 201204 event pairs, 190 based on Foata normal form. 484/16595 useless extension candidates. Maximal degree in co-relation 26528. Up to 2063 conditions per place. [2022-10-17 10:43:41,497 INFO L137 encePairwiseOnDemand]: 359/371 looper letters, 92 selfloop transitions, 33 changer transitions 0/495 dead transitions. [2022-10-17 10:43:41,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 495 transitions, 1864 flow [2022-10-17 10:43:41,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:43:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:43:41,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4263 transitions. [2022-10-17 10:43:41,510 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838896952104499 [2022-10-17 10:43:41,510 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4263 transitions. [2022-10-17 10:43:41,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4263 transitions. [2022-10-17 10:43:41,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:43:41,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4263 transitions. [2022-10-17 10:43:41,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 327.9230769230769) internal successors, (4263), 13 states have internal predecessors, (4263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:41,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:41,536 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 371.0) internal successors, (5194), 14 states have internal predecessors, (5194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:41,536 INFO L175 Difference]: Start difference. First operand has 396 places, 401 transitions, 1320 flow. Second operand 13 states and 4263 transitions. [2022-10-17 10:43:41,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 495 transitions, 1864 flow [2022-10-17 10:43:41,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 495 transitions, 1864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:43:41,568 INFO L231 Difference]: Finished difference. Result has 414 places, 429 transitions, 1514 flow [2022-10-17 10:43:41,569 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=371, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1514, PETRI_PLACES=414, PETRI_TRANSITIONS=429} [2022-10-17 10:43:41,570 INFO L287 CegarLoopForPetriNet]: 336 programPoint places, 78 predicate places. [2022-10-17 10:43:41,570 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 429 transitions, 1514 flow [2022-10-17 10:43:41,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.5) internal successors, (1929), 6 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:41,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:43:41,571 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:43:41,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:43:41,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_346b50ee-d29b-43c6-a7d0-7eeea0434527/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-17 10:43:41,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:43:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:43:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1145845885, now seen corresponding path program 3 times [2022-10-17 10:43:41,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:43:41,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294866957] [2022-10-17 10:43:41,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:43:41,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:43:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:43:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-10-17 10:43:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:43:42,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294866957] [2022-10-17 10:43:42,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294866957] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:43:42,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:43:42,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:43:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221128094] [2022-10-17 10:43:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:43:42,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:43:42,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:43:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:43:42,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:43:42,555 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 371 [2022-10-17 10:43:42,557 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 429 transitions, 1514 flow. Second operand has 7 states, 7 states have (on average 325.42857142857144) internal successors, (2278), 7 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:43:42,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:43:42,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 371 [2022-10-17 10:43:42,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand