./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:15:27,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:15:27,200 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:15:27,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:15:27,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:15:27,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:15:27,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:15:27,228 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:15:27,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:15:27,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:15:27,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:15:27,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:15:27,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:15:27,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:15:27,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:15:27,247 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:15:27,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:15:27,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:15:27,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:15:27,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:15:27,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:15:27,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:15:27,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:15:27,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:15:27,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:15:27,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:15:27,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:15:27,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:15:27,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:15:27,281 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:15:27,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:15:27,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:15:27,283 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:15:27,286 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:15:27,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:15:27,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:15:27,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:15:27,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:15:27,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:15:27,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:15:27,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:15:27,294 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:15:27,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:15:27,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:15:27,336 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:15:27,336 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:15:27,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:15:27,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:15:27,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:15:27,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:15:27,339 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:15:27,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:15:27,341 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:15:27,341 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:15:27,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:15:27,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:15:27,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:15:27,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:15:27,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:15:27,342 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:15:27,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:15:27,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:15:27,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:15:27,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:15:27,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:15:27,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:15:27,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:27,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:15:27,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:15:27,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:15:27,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:15:27,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:15:27,345 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:15:27,345 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:15:27,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:15:27,346 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_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2022-11-18 20:15:27,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:15:27,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:15:27,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:15:27,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:15:27,648 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:15:27,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 20:15:27,747 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/data/821bf77ba/c6b62296d5974ba7aac5e2d83fcb9399/FLAG33bcc3c24 [2022-11-18 20:15:28,379 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:15:28,380 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 20:15:28,393 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/data/821bf77ba/c6b62296d5974ba7aac5e2d83fcb9399/FLAG33bcc3c24 [2022-11-18 20:15:28,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/data/821bf77ba/c6b62296d5974ba7aac5e2d83fcb9399 [2022-11-18 20:15:28,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:15:28,662 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:15:28,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:28,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:15:28,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:15:28,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:28" (1/1) ... [2022-11-18 20:15:28,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e8f049c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:28, skipping insertion in model container [2022-11-18 20:15:28,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:15:28" (1/1) ... [2022-11-18 20:15:28,681 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:15:28,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:15:28,930 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-18 20:15:29,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:29,141 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:15:29,161 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2022-11-18 20:15:29,200 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:15:29,234 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:15:29,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29 WrapperNode [2022-11-18 20:15:29,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:15:29,236 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:29,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:15:29,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:15:29,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,291 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2022-11-18 20:15:29,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:15:29,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:15:29,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:15:29,296 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:15:29,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,330 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:15:29,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:15:29,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:15:29,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:15:29,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (1/1) ... [2022-11-18 20:15:29,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:15:29,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:15:29,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:15:29,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:15:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:15:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:15:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:15:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:15:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:15:29,454 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-18 20:15:29,454 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-18 20:15:29,455 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-18 20:15:29,455 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-18 20:15:29,455 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-18 20:15:29,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-18 20:15:29,456 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-18 20:15:29,456 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-18 20:15:29,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:15:29,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:15:29,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:15:29,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:15:29,458 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:15:29,679 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:15:29,686 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:15:29,941 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:15:29,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:15:29,948 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:15:29,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:29 BoogieIcfgContainer [2022-11-18 20:15:29,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:15:29,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:15:29,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:15:29,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:15:29,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:15:28" (1/3) ... [2022-11-18 20:15:29,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c4172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:29, skipping insertion in model container [2022-11-18 20:15:29,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:15:29" (2/3) ... [2022-11-18 20:15:29,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c4172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:15:29, skipping insertion in model container [2022-11-18 20:15:29,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:29" (3/3) ... [2022-11-18 20:15:29,961 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2022-11-18 20:15:29,970 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:15:29,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:15:29,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:15:29,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:15:30,040 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:15:30,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 105 transitions, 230 flow [2022-11-18 20:15:30,126 INFO L130 PetriNetUnfolder]: 2/101 cut-off events. [2022-11-18 20:15:30,126 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:30,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 101 events. 2/101 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-18 20:15:30,135 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 105 transitions, 230 flow [2022-11-18 20:15:30,139 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 85 transitions, 182 flow [2022-11-18 20:15:30,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:15:30,156 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;@533469d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:15:30,156 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-18 20:15:30,208 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-18 20:15:30,208 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:15:30,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:30,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:30,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:30,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:30,215 INFO L85 PathProgramCache]: Analyzing trace with hash -919313432, now seen corresponding path program 1 times [2022-11-18 20:15:30,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:30,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287769684] [2022-11-18 20:15:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:30,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:31,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287769684] [2022-11-18 20:15:31,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287769684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:31,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:31,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:15:31,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806966650] [2022-11-18 20:15:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:31,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:15:31,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:15:31,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:15:31,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 105 [2022-11-18 20:15:31,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:31,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 105 [2022-11-18 20:15:31,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:31,482 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-11-18 20:15:31,483 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 20:15:31,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 118 events. 6/118 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 4/121 useless extension candidates. Maximal degree in co-relation 132. Up to 13 conditions per place. [2022-11-18 20:15:31,485 INFO L137 encePairwiseOnDemand]: 98/105 looper letters, 13 selfloop transitions, 2 changer transitions 11/97 dead transitions. [2022-11-18 20:15:31,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 265 flow [2022-11-18 20:15:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:15:31,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:15:31,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 830 transitions. [2022-11-18 20:15:31,503 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-11-18 20:15:31,504 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 830 transitions. [2022-11-18 20:15:31,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 830 transitions. [2022-11-18 20:15:31,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:31,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 830 transitions. [2022-11-18 20:15:31,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 92.22222222222223) internal successors, (830), 9 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,535 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,537 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 182 flow. Second operand 9 states and 830 transitions. [2022-11-18 20:15:31,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 265 flow [2022-11-18 20:15:31,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 97 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:15:31,544 INFO L231 Difference]: Finished difference. Result has 108 places, 83 transitions, 194 flow [2022-11-18 20:15:31,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=194, PETRI_PLACES=108, PETRI_TRANSITIONS=83} [2022-11-18 20:15:31,553 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-11-18 20:15:31,553 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 83 transitions, 194 flow [2022-11-18 20:15:31,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.83333333333333) internal successors, (545), 6 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:31,554 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:31,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:15:31,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:31,556 INFO L85 PathProgramCache]: Analyzing trace with hash 140382755, now seen corresponding path program 1 times [2022-11-18 20:15:31,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:31,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004076708] [2022-11-18 20:15:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:31,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:31,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004076708] [2022-11-18 20:15:31,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004076708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:31,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:31,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:15:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971986695] [2022-11-18 20:15:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:31,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:15:31,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:31,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:15:31,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:15:31,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 105 [2022-11-18 20:15:31,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 83 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:31,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:31,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 105 [2022-11-18 20:15:31,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:32,218 INFO L130 PetriNetUnfolder]: 34/215 cut-off events. [2022-11-18 20:15:32,219 INFO L131 PetriNetUnfolder]: For 48/50 co-relation queries the response was YES. [2022-11-18 20:15:32,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 215 events. 34/215 cut-off events. For 48/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 691 event pairs, 8 based on Foata normal form. 4/213 useless extension candidates. Maximal degree in co-relation 352. Up to 43 conditions per place. [2022-11-18 20:15:32,222 INFO L137 encePairwiseOnDemand]: 98/105 looper letters, 15 selfloop transitions, 3 changer transitions 19/106 dead transitions. [2022-11-18 20:15:32,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 337 flow [2022-11-18 20:15:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:15:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:15:32,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 822 transitions. [2022-11-18 20:15:32,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8698412698412699 [2022-11-18 20:15:32,229 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 822 transitions. [2022-11-18 20:15:32,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 822 transitions. [2022-11-18 20:15:32,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:32,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 822 transitions. [2022-11-18 20:15:32,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.33333333333333) internal successors, (822), 9 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:32,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:32,236 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:32,236 INFO L175 Difference]: Start difference. First operand has 108 places, 83 transitions, 194 flow. Second operand 9 states and 822 transitions. [2022-11-18 20:15:32,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 337 flow [2022-11-18 20:15:32,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 303 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-18 20:15:32,241 INFO L231 Difference]: Finished difference. Result has 108 places, 85 transitions, 221 flow [2022-11-18 20:15:32,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=108, PETRI_TRANSITIONS=85} [2022-11-18 20:15:32,242 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 11 predicate places. [2022-11-18 20:15:32,242 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 85 transitions, 221 flow [2022-11-18 20:15:32,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:32,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:32,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:15:32,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash 367502952, now seen corresponding path program 1 times [2022-11-18 20:15:32,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:32,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608668421] [2022-11-18 20:15:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:32,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:32,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:32,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:32,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608668421] [2022-11-18 20:15:32,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608668421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:32,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:32,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:32,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093225252] [2022-11-18 20:15:32,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:32,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:32,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:32,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:32,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:32,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:32,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 85 transitions, 221 flow. Second operand has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:32,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:32,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:32,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:33,058 INFO L130 PetriNetUnfolder]: 468/1223 cut-off events. [2022-11-18 20:15:33,059 INFO L131 PetriNetUnfolder]: For 1440/2020 co-relation queries the response was YES. [2022-11-18 20:15:33,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3095 conditions, 1223 events. 468/1223 cut-off events. For 1440/2020 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7795 event pairs, 41 based on Foata normal form. 36/1212 useless extension candidates. Maximal degree in co-relation 3051. Up to 212 conditions per place. [2022-11-18 20:15:33,078 INFO L137 encePairwiseOnDemand]: 92/105 looper letters, 29 selfloop transitions, 11 changer transitions 59/162 dead transitions. [2022-11-18 20:15:33,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 800 flow [2022-11-18 20:15:33,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:15:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-18 20:15:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1236 transitions. [2022-11-18 20:15:33,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408163265306122 [2022-11-18 20:15:33,083 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1236 transitions. [2022-11-18 20:15:33,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1236 transitions. [2022-11-18 20:15:33,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:33,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1236 transitions. [2022-11-18 20:15:33,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 88.28571428571429) internal successors, (1236), 14 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,092 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 105.0) internal successors, (1575), 15 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,092 INFO L175 Difference]: Start difference. First operand has 108 places, 85 transitions, 221 flow. Second operand 14 states and 1236 transitions. [2022-11-18 20:15:33,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 800 flow [2022-11-18 20:15:33,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 162 transitions, 773 flow, removed 12 selfloop flow, removed 4 redundant places. [2022-11-18 20:15:33,108 INFO L231 Difference]: Finished difference. Result has 123 places, 90 transitions, 341 flow [2022-11-18 20:15:33,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=341, PETRI_PLACES=123, PETRI_TRANSITIONS=90} [2022-11-18 20:15:33,110 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 26 predicate places. [2022-11-18 20:15:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 90 transitions, 341 flow [2022-11-18 20:15:33,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.0) internal successors, (664), 8 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:33,111 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:15:33,112 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:33,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1812522442, now seen corresponding path program 2 times [2022-11-18 20:15:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:33,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120728932] [2022-11-18 20:15:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:33,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:33,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120728932] [2022-11-18 20:15:33,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120728932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:33,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:33,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:15:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760387218] [2022-11-18 20:15:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:15:33,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:15:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:33,442 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:33,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 90 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:33,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:33,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:33,866 INFO L130 PetriNetUnfolder]: 265/868 cut-off events. [2022-11-18 20:15:33,867 INFO L131 PetriNetUnfolder]: For 3660/4601 co-relation queries the response was YES. [2022-11-18 20:15:33,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3155 conditions, 868 events. 265/868 cut-off events. For 3660/4601 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5713 event pairs, 29 based on Foata normal form. 18/866 useless extension candidates. Maximal degree in co-relation 3097. Up to 183 conditions per place. [2022-11-18 20:15:33,880 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 30 selfloop transitions, 12 changer transitions 43/148 dead transitions. [2022-11-18 20:15:33,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 148 transitions, 1022 flow [2022-11-18 20:15:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:15:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:15:33,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1128 transitions. [2022-11-18 20:15:33,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8263736263736263 [2022-11-18 20:15:33,885 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1128 transitions. [2022-11-18 20:15:33,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1128 transitions. [2022-11-18 20:15:33,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:33,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1128 transitions. [2022-11-18 20:15:33,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.76923076923077) internal successors, (1128), 13 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,898 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,898 INFO L175 Difference]: Start difference. First operand has 123 places, 90 transitions, 341 flow. Second operand 13 states and 1128 transitions. [2022-11-18 20:15:33,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 148 transitions, 1022 flow [2022-11-18 20:15:33,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 148 transitions, 982 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-18 20:15:33,915 INFO L231 Difference]: Finished difference. Result has 133 places, 96 transitions, 481 flow [2022-11-18 20:15:33,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=481, PETRI_PLACES=133, PETRI_TRANSITIONS=96} [2022-11-18 20:15:33,917 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 36 predicate places. [2022-11-18 20:15:33,918 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 96 transitions, 481 flow [2022-11-18 20:15:33,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.28571428571429) internal successors, (583), 7 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:33,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:33,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:33,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:15:33,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1613337015, now seen corresponding path program 1 times [2022-11-18 20:15:33,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:33,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338780416] [2022-11-18 20:15:33,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:33,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:34,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338780416] [2022-11-18 20:15:34,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338780416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:34,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:34,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:15:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126621565] [2022-11-18 20:15:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:34,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:15:34,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:34,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:15:34,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:34,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:34,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 96 transitions, 481 flow. Second operand has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:34,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:34,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:34,638 INFO L130 PetriNetUnfolder]: 203/825 cut-off events. [2022-11-18 20:15:34,638 INFO L131 PetriNetUnfolder]: For 5268/5491 co-relation queries the response was YES. [2022-11-18 20:15:34,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 825 events. 203/825 cut-off events. For 5268/5491 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5573 event pairs, 9 based on Foata normal form. 21/831 useless extension candidates. Maximal degree in co-relation 3252. Up to 149 conditions per place. [2022-11-18 20:15:34,649 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 35 selfloop transitions, 15 changer transitions 35/148 dead transitions. [2022-11-18 20:15:34,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 148 transitions, 1228 flow [2022-11-18 20:15:34,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:15:34,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:15:34,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1123 transitions. [2022-11-18 20:15:34,653 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8227106227106227 [2022-11-18 20:15:34,653 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1123 transitions. [2022-11-18 20:15:34,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1123 transitions. [2022-11-18 20:15:34,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:34,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1123 transitions. [2022-11-18 20:15:34,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 86.38461538461539) internal successors, (1123), 13 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,660 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,660 INFO L175 Difference]: Start difference. First operand has 133 places, 96 transitions, 481 flow. Second operand 13 states and 1123 transitions. [2022-11-18 20:15:34,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 148 transitions, 1228 flow [2022-11-18 20:15:34,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 148 transitions, 1116 flow, removed 54 selfloop flow, removed 4 redundant places. [2022-11-18 20:15:34,680 INFO L231 Difference]: Finished difference. Result has 144 places, 100 transitions, 584 flow [2022-11-18 20:15:34,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=584, PETRI_PLACES=144, PETRI_TRANSITIONS=100} [2022-11-18 20:15:34,681 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-11-18 20:15:34,681 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 100 transitions, 584 flow [2022-11-18 20:15:34,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.42857142857143) internal successors, (584), 7 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,681 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:34,681 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:34,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:15:34,682 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1807888025, now seen corresponding path program 1 times [2022-11-18 20:15:34,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:34,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116233395] [2022-11-18 20:15:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:34,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:34,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:34,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116233395] [2022-11-18 20:15:34,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116233395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:34,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:34,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:34,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740718526] [2022-11-18 20:15:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:34,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:34,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:34,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:34,978 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:34,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 100 transitions, 584 flow. Second operand has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:34,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:34,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:34,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:35,307 INFO L130 PetriNetUnfolder]: 150/739 cut-off events. [2022-11-18 20:15:35,307 INFO L131 PetriNetUnfolder]: For 6449/6863 co-relation queries the response was YES. [2022-11-18 20:15:35,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3217 conditions, 739 events. 150/739 cut-off events. For 6449/6863 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 5005 event pairs, 10 based on Foata normal form. 22/746 useless extension candidates. Maximal degree in co-relation 3159. Up to 111 conditions per place. [2022-11-18 20:15:35,316 INFO L137 encePairwiseOnDemand]: 93/105 looper letters, 32 selfloop transitions, 15 changer transitions 73/183 dead transitions. [2022-11-18 20:15:35,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 183 transitions, 2041 flow [2022-11-18 20:15:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:15:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:15:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 963 transitions. [2022-11-18 20:15:35,320 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8337662337662337 [2022-11-18 20:15:35,320 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 963 transitions. [2022-11-18 20:15:35,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 963 transitions. [2022-11-18 20:15:35,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:35,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 963 transitions. [2022-11-18 20:15:35,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 87.54545454545455) internal successors, (963), 11 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,327 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 105.0) internal successors, (1260), 12 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,327 INFO L175 Difference]: Start difference. First operand has 144 places, 100 transitions, 584 flow. Second operand 11 states and 963 transitions. [2022-11-18 20:15:35,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 183 transitions, 2041 flow [2022-11-18 20:15:35,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 183 transitions, 1935 flow, removed 53 selfloop flow, removed 9 redundant places. [2022-11-18 20:15:35,361 INFO L231 Difference]: Finished difference. Result has 144 places, 99 transitions, 600 flow [2022-11-18 20:15:35,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=600, PETRI_PLACES=144, PETRI_TRANSITIONS=99} [2022-11-18 20:15:35,364 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 47 predicate places. [2022-11-18 20:15:35,364 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 99 transitions, 600 flow [2022-11-18 20:15:35,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.125) internal successors, (665), 8 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:35,365 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:35,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:15:35,365 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:35,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:35,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1997478967, now seen corresponding path program 1 times [2022-11-18 20:15:35,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:35,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19927170] [2022-11-18 20:15:35,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:35,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:35,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:35,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:35,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19927170] [2022-11-18 20:15:35,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19927170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:35,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:35,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:15:35,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838771012] [2022-11-18 20:15:35,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:35,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:15:35,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:35,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:15:35,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:35,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:35,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 99 transitions, 600 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:35,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:35,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:35,969 INFO L130 PetriNetUnfolder]: 54/400 cut-off events. [2022-11-18 20:15:35,969 INFO L131 PetriNetUnfolder]: For 4140/4256 co-relation queries the response was YES. [2022-11-18 20:15:35,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1733 conditions, 400 events. 54/400 cut-off events. For 4140/4256 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2203 event pairs, 3 based on Foata normal form. 11/407 useless extension candidates. Maximal degree in co-relation 1654. Up to 49 conditions per place. [2022-11-18 20:15:35,974 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 12 changer transitions 28/133 dead transitions. [2022-11-18 20:15:35,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 133 transitions, 1264 flow [2022-11-18 20:15:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:15:35,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 20:15:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1114 transitions. [2022-11-18 20:15:35,977 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161172161172161 [2022-11-18 20:15:35,977 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1114 transitions. [2022-11-18 20:15:35,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1114 transitions. [2022-11-18 20:15:35,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:35,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1114 transitions. [2022-11-18 20:15:35,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 85.6923076923077) internal successors, (1114), 13 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,985 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 105.0) internal successors, (1470), 14 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:35,985 INFO L175 Difference]: Start difference. First operand has 144 places, 99 transitions, 600 flow. Second operand 13 states and 1114 transitions. [2022-11-18 20:15:35,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 133 transitions, 1264 flow [2022-11-18 20:15:35,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 133 transitions, 1106 flow, removed 56 selfloop flow, removed 6 redundant places. [2022-11-18 20:15:36,001 INFO L231 Difference]: Finished difference. Result has 154 places, 95 transitions, 517 flow [2022-11-18 20:15:36,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=517, PETRI_PLACES=154, PETRI_TRANSITIONS=95} [2022-11-18 20:15:36,002 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 57 predicate places. [2022-11-18 20:15:36,002 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 95 transitions, 517 flow [2022-11-18 20:15:36,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:36,002 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:36,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:15:36,003 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash -521225508, now seen corresponding path program 1 times [2022-11-18 20:15:36,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:36,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964440522] [2022-11-18 20:15:36,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:36,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:36,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964440522] [2022-11-18 20:15:36,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964440522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:36,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:36,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:15:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503019713] [2022-11-18 20:15:36,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:36,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:15:36,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:15:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:15:36,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-18 20:15:36,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 95 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:36,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-18 20:15:36,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:36,780 INFO L130 PetriNetUnfolder]: 1054/2321 cut-off events. [2022-11-18 20:15:36,780 INFO L131 PetriNetUnfolder]: For 6190/6257 co-relation queries the response was YES. [2022-11-18 20:15:36,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5690 conditions, 2321 events. 1054/2321 cut-off events. For 6190/6257 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 17797 event pairs, 83 based on Foata normal form. 53/2217 useless extension candidates. Maximal degree in co-relation 5648. Up to 848 conditions per place. [2022-11-18 20:15:36,805 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 29 selfloop transitions, 19 changer transitions 0/128 dead transitions. [2022-11-18 20:15:36,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 128 transitions, 683 flow [2022-11-18 20:15:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:15:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:15:36,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 824 transitions. [2022-11-18 20:15:36,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8719576719576719 [2022-11-18 20:15:36,808 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 824 transitions. [2022-11-18 20:15:36,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 824 transitions. [2022-11-18 20:15:36,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:36,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 824 transitions. [2022-11-18 20:15:36,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 91.55555555555556) internal successors, (824), 9 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,813 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,813 INFO L175 Difference]: Start difference. First operand has 154 places, 95 transitions, 517 flow. Second operand 9 states and 824 transitions. [2022-11-18 20:15:36,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 128 transitions, 683 flow [2022-11-18 20:15:36,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 128 transitions, 598 flow, removed 29 selfloop flow, removed 19 redundant places. [2022-11-18 20:15:36,831 INFO L231 Difference]: Finished difference. Result has 139 places, 112 transitions, 566 flow [2022-11-18 20:15:36,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=566, PETRI_PLACES=139, PETRI_TRANSITIONS=112} [2022-11-18 20:15:36,832 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 42 predicate places. [2022-11-18 20:15:36,832 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 112 transitions, 566 flow [2022-11-18 20:15:36,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 87.83333333333333) internal successors, (527), 6 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:36,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:36,833 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:36,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:15:36,834 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:36,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 845774092, now seen corresponding path program 1 times [2022-11-18 20:15:36,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:36,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128998672] [2022-11-18 20:15:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:36,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:36,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:37,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:37,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:37,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128998672] [2022-11-18 20:15:37,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128998672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:37,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:37,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:15:37,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908007669] [2022-11-18 20:15:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:37,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:15:37,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:37,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:15:37,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:15:37,103 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-18 20:15:37,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 112 transitions, 566 flow. Second operand has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:37,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:37,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-18 20:15:37,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:37,721 INFO L130 PetriNetUnfolder]: 1120/2425 cut-off events. [2022-11-18 20:15:37,721 INFO L131 PetriNetUnfolder]: For 8241/10091 co-relation queries the response was YES. [2022-11-18 20:15:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9058 conditions, 2425 events. 1120/2425 cut-off events. For 8241/10091 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 19138 event pairs, 29 based on Foata normal form. 183/2464 useless extension candidates. Maximal degree in co-relation 9026. Up to 1242 conditions per place. [2022-11-18 20:15:37,749 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 30 selfloop transitions, 37 changer transitions 2/149 dead transitions. [2022-11-18 20:15:37,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 149 transitions, 945 flow [2022-11-18 20:15:37,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:15:37,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 20:15:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1099 transitions. [2022-11-18 20:15:37,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8722222222222222 [2022-11-18 20:15:37,753 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1099 transitions. [2022-11-18 20:15:37,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1099 transitions. [2022-11-18 20:15:37,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:37,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1099 transitions. [2022-11-18 20:15:37,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 91.58333333333333) internal successors, (1099), 12 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:37,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:37,759 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 105.0) internal successors, (1365), 13 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:37,760 INFO L175 Difference]: Start difference. First operand has 139 places, 112 transitions, 566 flow. Second operand 12 states and 1099 transitions. [2022-11-18 20:15:37,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 149 transitions, 945 flow [2022-11-18 20:15:37,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 149 transitions, 935 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 20:15:37,773 INFO L231 Difference]: Finished difference. Result has 152 places, 132 transitions, 842 flow [2022-11-18 20:15:37,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=842, PETRI_PLACES=152, PETRI_TRANSITIONS=132} [2022-11-18 20:15:37,774 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 55 predicate places. [2022-11-18 20:15:37,774 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 132 transitions, 842 flow [2022-11-18 20:15:37,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 87.71428571428571) internal successors, (614), 7 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:37,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:37,775 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:37,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:15:37,775 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:37,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:37,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1393408815, now seen corresponding path program 1 times [2022-11-18 20:15:37,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:37,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732530965] [2022-11-18 20:15:37,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:37,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:38,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:38,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732530965] [2022-11-18 20:15:38,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732530965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:38,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:38,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31593171] [2022-11-18 20:15:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:38,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:38,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:38,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-18 20:15:38,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 132 transitions, 842 flow. Second operand has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:38,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-18 20:15:38,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:38,757 INFO L130 PetriNetUnfolder]: 1009/2253 cut-off events. [2022-11-18 20:15:38,757 INFO L131 PetriNetUnfolder]: For 17132/19432 co-relation queries the response was YES. [2022-11-18 20:15:38,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11557 conditions, 2253 events. 1009/2253 cut-off events. For 17132/19432 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 18600 event pairs, 5 based on Foata normal form. 269/2397 useless extension candidates. Maximal degree in co-relation 11521. Up to 1123 conditions per place. [2022-11-18 20:15:38,781 INFO L137 encePairwiseOnDemand]: 95/105 looper letters, 20 selfloop transitions, 55 changer transitions 18/173 dead transitions. [2022-11-18 20:15:38,782 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 173 transitions, 1432 flow [2022-11-18 20:15:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:15:38,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 20:15:38,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1373 transitions. [2022-11-18 20:15:38,787 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8717460317460317 [2022-11-18 20:15:38,788 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1373 transitions. [2022-11-18 20:15:38,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1373 transitions. [2022-11-18 20:15:38,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:38,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1373 transitions. [2022-11-18 20:15:38,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 91.53333333333333) internal successors, (1373), 15 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,798 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,798 INFO L175 Difference]: Start difference. First operand has 152 places, 132 transitions, 842 flow. Second operand 15 states and 1373 transitions. [2022-11-18 20:15:38,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 173 transitions, 1432 flow [2022-11-18 20:15:38,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 173 transitions, 1323 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-11-18 20:15:38,850 INFO L231 Difference]: Finished difference. Result has 167 places, 148 transitions, 1069 flow [2022-11-18 20:15:38,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1069, PETRI_PLACES=167, PETRI_TRANSITIONS=148} [2022-11-18 20:15:38,853 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 70 predicate places. [2022-11-18 20:15:38,853 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 148 transitions, 1069 flow [2022-11-18 20:15:38,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 87.625) internal successors, (701), 8 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:38,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:38,854 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:15:38,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1340193438, now seen corresponding path program 1 times [2022-11-18 20:15:38,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:38,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492464833] [2022-11-18 20:15:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:38,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:39,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:39,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:39,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492464833] [2022-11-18 20:15:39,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492464833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:39,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:39,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:15:39,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422024717] [2022-11-18 20:15:39,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:39,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:15:39,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:39,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:15:39,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:15:39,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 105 [2022-11-18 20:15:39,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 148 transitions, 1069 flow. Second operand has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:39,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:39,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 105 [2022-11-18 20:15:39,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:39,681 INFO L130 PetriNetUnfolder]: 714/2155 cut-off events. [2022-11-18 20:15:39,682 INFO L131 PetriNetUnfolder]: For 15494/15864 co-relation queries the response was YES. [2022-11-18 20:15:39,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9312 conditions, 2155 events. 714/2155 cut-off events. For 15494/15864 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 19776 event pairs, 23 based on Foata normal form. 5/2058 useless extension candidates. Maximal degree in co-relation 9270. Up to 582 conditions per place. [2022-11-18 20:15:39,716 INFO L137 encePairwiseOnDemand]: 94/105 looper letters, 32 selfloop transitions, 13 changer transitions 13/168 dead transitions. [2022-11-18 20:15:39,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 168 transitions, 1299 flow [2022-11-18 20:15:39,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:15:39,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 20:15:39,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 778 transitions. [2022-11-18 20:15:39,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8232804232804233 [2022-11-18 20:15:39,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 778 transitions. [2022-11-18 20:15:39,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 778 transitions. [2022-11-18 20:15:39,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:39,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 778 transitions. [2022-11-18 20:15:39,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 86.44444444444444) internal successors, (778), 9 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:39,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:39,727 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:39,727 INFO L175 Difference]: Start difference. First operand has 167 places, 148 transitions, 1069 flow. Second operand 9 states and 778 transitions. [2022-11-18 20:15:39,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 168 transitions, 1299 flow [2022-11-18 20:15:39,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 168 transitions, 1096 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-11-18 20:15:39,969 INFO L231 Difference]: Finished difference. Result has 168 places, 143 transitions, 888 flow [2022-11-18 20:15:39,969 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=888, PETRI_PLACES=168, PETRI_TRANSITIONS=143} [2022-11-18 20:15:39,970 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 71 predicate places. [2022-11-18 20:15:39,970 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 143 transitions, 888 flow [2022-11-18 20:15:39,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 83.375) internal successors, (667), 8 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:39,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:15:39,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:39,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:15:39,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-18 20:15:39,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:15:39,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1313632636, now seen corresponding path program 2 times [2022-11-18 20:15:39,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:15:39,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867651866] [2022-11-18 20:15:39,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:15:39,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:15:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:15:40,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:15:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:15:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867651866] [2022-11-18 20:15:40,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867651866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:15:40,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:15:40,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:15:40,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405335284] [2022-11-18 20:15:40,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:15:40,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:15:40,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:15:40,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:15:40,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:15:40,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 105 [2022-11-18 20:15:40,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 143 transitions, 888 flow. Second operand has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:15:40,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 105 [2022-11-18 20:15:40,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:15:40,875 INFO L130 PetriNetUnfolder]: 749/2061 cut-off events. [2022-11-18 20:15:40,875 INFO L131 PetriNetUnfolder]: For 5689/7204 co-relation queries the response was YES. [2022-11-18 20:15:40,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7544 conditions, 2061 events. 749/2061 cut-off events. For 5689/7204 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 18949 event pairs, 1 based on Foata normal form. 244/2170 useless extension candidates. Maximal degree in co-relation 7502. Up to 306 conditions per place. [2022-11-18 20:15:40,896 INFO L137 encePairwiseOnDemand]: 96/105 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2022-11-18 20:15:40,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 149 transitions, 1084 flow [2022-11-18 20:15:40,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:15:40,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:15:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1612 transitions. [2022-11-18 20:15:40,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.852910052910053 [2022-11-18 20:15:40,900 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1612 transitions. [2022-11-18 20:15:40,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1612 transitions. [2022-11-18 20:15:40,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:15:40,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1612 transitions. [2022-11-18 20:15:40,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 89.55555555555556) internal successors, (1612), 18 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,908 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 105.0) internal successors, (1995), 19 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,908 INFO L175 Difference]: Start difference. First operand has 168 places, 143 transitions, 888 flow. Second operand 18 states and 1612 transitions. [2022-11-18 20:15:40,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 149 transitions, 1084 flow [2022-11-18 20:15:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 149 transitions, 995 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-11-18 20:15:40,971 INFO L231 Difference]: Finished difference. Result has 158 places, 0 transitions, 0 flow [2022-11-18 20:15:40,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=105, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=158, PETRI_TRANSITIONS=0} [2022-11-18 20:15:40,972 INFO L288 CegarLoopForPetriNet]: 97 programPoint places, 61 predicate places. [2022-11-18 20:15:40,972 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 0 transitions, 0 flow [2022-11-18 20:15:40,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 87.55555555555556) internal successors, (788), 9 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:15:40,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-18 20:15:40,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-11-18 20:15:40,975 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-18 20:15:40,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-18 20:15:40,976 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-11-18 20:15:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:15:40,976 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:15:40,980 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:15:40,980 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:15:40,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:15:40 BasicIcfg [2022-11-18 20:15:40,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:15:40,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:15:40,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:15:40,985 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:15:40,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:15:29" (3/4) ... [2022-11-18 20:15:40,988 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:15:40,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-18 20:15:40,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-18 20:15:40,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2022-11-18 20:15:40,995 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2022-11-18 20:15:41,000 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 20:15:41,000 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:15:41,000 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:15:41,001 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:15:41,039 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:15:41,039 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:15:41,039 INFO L158 Benchmark]: Toolchain (without parser) took 12377.32ms. Allocated memory was 138.4MB in the beginning and 486.5MB in the end (delta: 348.1MB). Free memory was 104.5MB in the beginning and 289.8MB in the end (delta: -185.3MB). Peak memory consumption was 162.7MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,040 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:15:41,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 571.21ms. Allocated memory is still 138.4MB. Free memory was 104.2MB in the beginning and 104.3MB in the end (delta: -53.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.06ms. Allocated memory is still 138.4MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,041 INFO L158 Benchmark]: Boogie Preprocessor took 37.98ms. Allocated memory is still 138.4MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,041 INFO L158 Benchmark]: RCFGBuilder took 617.17ms. Allocated memory is still 138.4MB. Free memory was 100.6MB in the beginning and 86.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,042 INFO L158 Benchmark]: TraceAbstraction took 11030.87ms. Allocated memory was 138.4MB in the beginning and 486.5MB in the end (delta: 348.1MB). Free memory was 85.9MB in the beginning and 292.9MB in the end (delta: -207.0MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,042 INFO L158 Benchmark]: Witness Printer took 53.97ms. Allocated memory is still 486.5MB. Free memory was 292.9MB in the beginning and 289.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:15:41,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 98.6MB. Free memory was 51.7MB in the beginning and 51.6MB in the end (delta: 78.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 571.21ms. Allocated memory is still 138.4MB. Free memory was 104.2MB in the beginning and 104.3MB in the end (delta: -53.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.06ms. Allocated memory is still 138.4MB. Free memory was 104.3MB in the beginning and 102.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.98ms. Allocated memory is still 138.4MB. Free memory was 102.2MB in the beginning and 100.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 617.17ms. Allocated memory is still 138.4MB. Free memory was 100.6MB in the beginning and 86.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 11030.87ms. Allocated memory was 138.4MB in the beginning and 486.5MB in the end (delta: 348.1MB). Free memory was 85.9MB in the beginning and 292.9MB in the end (delta: -207.0MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. * Witness Printer took 53.97ms. Allocated memory is still 486.5MB. Free memory was 292.9MB in the beginning and 289.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 134 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.9s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 664 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 664 mSDsluCounter, 861 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 666 mSDsCounter, 60 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 60 mSolverCounterUnsat, 195 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1069occurred in iteration=10, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 799 ConstructedInterpolants, 0 QuantifiedInterpolants, 2763 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:15:41,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ad9f03-eb45-4afa-a6db-77bfff6fd7fe/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE