./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- 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-4e7fbc6 [2022-11-23 03:15:04,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:15:04,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:15:04,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:15:04,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:15:04,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:15:04,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:15:04,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:15:04,596 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:15:04,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:15:04,598 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:15:04,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:15:04,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:15:04,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:15:04,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:15:04,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:15:04,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:15:04,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:15:04,609 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:15:04,611 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:15:04,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:15:04,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:15:04,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:15:04,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:15:04,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:15:04,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:15:04,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:15:04,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:15:04,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:15:04,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:15:04,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:15:04,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:15:04,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:15:04,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:15:04,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:15:04,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:15:04,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:15:04,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:15:04,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:15:04,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:15:04,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:15:04,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:15:04,695 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:15:04,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:15:04,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:15:04,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:15:04,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:15:04,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:15:04,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:15:04,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:15:04,701 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:15:04,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:15:04,703 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:15:04,703 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:15:04,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:15:04,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:15:04,705 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:15:04,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:15:04,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:15:04,706 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:15:04,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:15:04,706 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:15:04,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:15:04,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:15:04,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:15:04,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:15:04,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:15:04,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:15:04,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:15:04,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:15:04,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:15:04,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:15:04,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:15:04,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:15:04,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:15:04,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:15:04,711 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-23 03:15:05,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:15:05,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:15:05,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:15:05,079 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:15:05,080 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:15:05,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-23 03:15:08,431 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:15:08,745 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:15:08,746 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-23 03:15:08,754 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/data/6cc749696/015c435bd2294194b3090e43c987e7e5/FLAGfa6971693 [2022-11-23 03:15:08,782 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/data/6cc749696/015c435bd2294194b3090e43c987e7e5 [2022-11-23 03:15:08,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:15:08,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:15:08,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:15:08,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:15:08,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:15:08,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:08" (1/1) ... [2022-11-23 03:15:08,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3bd4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:08, skipping insertion in model container [2022-11-23 03:15:08,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:15:08" (1/1) ... [2022-11-23 03:15:08,809 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:15:08,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:15:09,062 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-23 03:15:09,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:15:09,081 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:15:09,117 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-23 03:15:09,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:15:09,135 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:15:09,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09 WrapperNode [2022-11-23 03:15:09,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:15:09,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:15:09,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:15:09,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:15:09,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,187 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 255 [2022-11-23 03:15:09,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:15:09,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:15:09,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:15:09,189 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:15:09,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,228 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:15:09,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:15:09,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:15:09,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:15:09,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (1/1) ... [2022-11-23 03:15:09,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:15:09,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:15:09,283 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:15:09,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90be402a-5449-407c-b5af-85cd21c142de/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:15:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:15:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 03:15:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 03:15:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 03:15:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 03:15:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 03:15:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 03:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 03:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 03:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 03:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 03:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:15:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 03:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 03:15:09,330 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 03:15:09,445 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:15:09,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:15:09,948 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:15:10,167 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:15:10,169 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 03:15:10,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:10 BoogieIcfgContainer [2022-11-23 03:15:10,174 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:15:10,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:15:10,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:15:10,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:15:10,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:15:08" (1/3) ... [2022-11-23 03:15:10,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313e960d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:10, skipping insertion in model container [2022-11-23 03:15:10,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:15:09" (2/3) ... [2022-11-23 03:15:10,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@313e960d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:15:10, skipping insertion in model container [2022-11-23 03:15:10,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:15:10" (3/3) ... [2022-11-23 03:15:10,193 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-23 03:15:10,209 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 03:15:10,221 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:15:10,221 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:15:10,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 03:15:10,294 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 03:15:10,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-11-23 03:15:10,436 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-11-23 03:15:10,436 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:15:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 108 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-11-23 03:15:10,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-11-23 03:15:10,446 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-11-23 03:15:10,450 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 03:15:10,466 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 138 transitions, 294 flow [2022-11-23 03:15:10,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 138 transitions, 294 flow [2022-11-23 03:15:10,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 138 transitions, 294 flow [2022-11-23 03:15:10,531 INFO L130 PetriNetUnfolder]: 2/138 cut-off events. [2022-11-23 03:15:10,531 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:15:10,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 138 events. 2/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 107 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-11-23 03:15:10,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-11-23 03:15:16,332 INFO L134 LiptonReduction]: Checked pairs total: 13965 [2022-11-23 03:15:16,332 INFO L136 LiptonReduction]: Total number of compositions: 103 [2022-11-23 03:15:16,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:15:16,358 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;@217101ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:15:16,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 03:15:16,371 INFO L130 PetriNetUnfolder]: 0/42 cut-off events. [2022-11-23 03:15:16,371 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 03:15:16,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:16,373 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] [2022-11-23 03:15:16,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -730079917, now seen corresponding path program 1 times [2022-11-23 03:15:16,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:16,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609605947] [2022-11-23 03:15:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:17,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609605947] [2022-11-23 03:15:17,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609605947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:17,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:17,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:15:17,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308597968] [2022-11-23 03:15:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:17,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:15:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:17,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:15:17,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:15:17,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 255 [2022-11-23 03:15:17,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 104 flow. Second operand has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:17,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:17,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 255 [2022-11-23 03:15:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:19,537 INFO L130 PetriNetUnfolder]: 6197/9376 cut-off events. [2022-11-23 03:15:19,537 INFO L131 PetriNetUnfolder]: For 477/477 co-relation queries the response was YES. [2022-11-23 03:15:19,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19169 conditions, 9376 events. 6197/9376 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 49944 event pairs, 2421 based on Foata normal form. 1/9354 useless extension candidates. Maximal degree in co-relation 16889. Up to 3168 conditions per place. [2022-11-23 03:15:19,602 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 158 selfloop transitions, 15 changer transitions 22/198 dead transitions. [2022-11-23 03:15:19,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 198 transitions, 858 flow [2022-11-23 03:15:19,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:15:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 03:15:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1450 transitions. [2022-11-23 03:15:19,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5169340463458111 [2022-11-23 03:15:19,627 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1450 transitions. [2022-11-23 03:15:19,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1450 transitions. [2022-11-23 03:15:19,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:19,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1450 transitions. [2022-11-23 03:15:19,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.8181818181818) internal successors, (1450), 11 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:19,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:19,659 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:19,661 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 104 flow. Second operand 11 states and 1450 transitions. [2022-11-23 03:15:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 198 transitions, 858 flow [2022-11-23 03:15:19,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 198 transitions, 810 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-23 03:15:19,678 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 184 flow [2022-11-23 03:15:19,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=184, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2022-11-23 03:15:19,684 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2022-11-23 03:15:19,684 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 184 flow [2022-11-23 03:15:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:19,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:19,686 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] [2022-11-23 03:15:19,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:15:19,686 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:19,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:19,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1250561923, now seen corresponding path program 2 times [2022-11-23 03:15:19,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:19,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742884999] [2022-11-23 03:15:19,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:19,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:20,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:20,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742884999] [2022-11-23 03:15:20,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742884999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:20,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:20,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 03:15:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973471602] [2022-11-23 03:15:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:15:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:15:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:15:21,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 255 [2022-11-23 03:15:21,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 184 flow. Second operand has 11 states, 11 states have (on average 116.36363636363636) internal successors, (1280), 11 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:21,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:21,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 255 [2022-11-23 03:15:21,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:26,146 INFO L130 PetriNetUnfolder]: 20460/33291 cut-off events. [2022-11-23 03:15:26,147 INFO L131 PetriNetUnfolder]: For 452/462 co-relation queries the response was YES. [2022-11-23 03:15:26,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68242 conditions, 33291 events. 20460/33291 cut-off events. For 452/462 co-relation queries the response was YES. Maximal size of possible extension queue 1013. Compared 256129 event pairs, 1811 based on Foata normal form. 238/32883 useless extension candidates. Maximal degree in co-relation 68220. Up to 7699 conditions per place. [2022-11-23 03:15:26,362 INFO L137 encePairwiseOnDemand]: 238/255 looper letters, 304 selfloop transitions, 97 changer transitions 0/423 dead transitions. [2022-11-23 03:15:26,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 423 transitions, 1731 flow [2022-11-23 03:15:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-23 03:15:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-23 03:15:26,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2782 transitions. [2022-11-23 03:15:26,371 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.519514472455649 [2022-11-23 03:15:26,371 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2782 transitions. [2022-11-23 03:15:26,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2782 transitions. [2022-11-23 03:15:26,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:26,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2782 transitions. [2022-11-23 03:15:26,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.47619047619048) internal successors, (2782), 21 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:26,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 255.0) internal successors, (5610), 22 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:26,392 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 255.0) internal successors, (5610), 22 states have internal predecessors, (5610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:26,392 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 184 flow. Second operand 21 states and 2782 transitions. [2022-11-23 03:15:26,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 423 transitions, 1731 flow [2022-11-23 03:15:26,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 423 transitions, 1729 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-23 03:15:26,424 INFO L231 Difference]: Finished difference. Result has 90 places, 176 transitions, 802 flow [2022-11-23 03:15:26,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=802, PETRI_PLACES=90, PETRI_TRANSITIONS=176} [2022-11-23 03:15:26,425 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 37 predicate places. [2022-11-23 03:15:26,425 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 176 transitions, 802 flow [2022-11-23 03:15:26,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 116.36363636363636) internal successors, (1280), 11 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:26,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:26,427 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] [2022-11-23 03:15:26,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 03:15:26,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:26,431 INFO L85 PathProgramCache]: Analyzing trace with hash -305649061, now seen corresponding path program 3 times [2022-11-23 03:15:26,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:26,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862064132] [2022-11-23 03:15:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:26,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:26,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:26,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862064132] [2022-11-23 03:15:26,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862064132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:26,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:26,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:15:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558943592] [2022-11-23 03:15:26,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:26,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:15:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:15:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:15:26,691 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2022-11-23 03:15:26,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 176 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:26,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:26,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2022-11-23 03:15:26,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:30,707 INFO L130 PetriNetUnfolder]: 17379/29724 cut-off events. [2022-11-23 03:15:30,707 INFO L131 PetriNetUnfolder]: For 31886/33745 co-relation queries the response was YES. [2022-11-23 03:15:30,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84664 conditions, 29724 events. 17379/29724 cut-off events. For 31886/33745 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 242495 event pairs, 10968 based on Foata normal form. 742/29480 useless extension candidates. Maximal degree in co-relation 64522. Up to 23024 conditions per place. [2022-11-23 03:15:31,033 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 146 selfloop transitions, 14 changer transitions 0/208 dead transitions. [2022-11-23 03:15:31,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 208 transitions, 1267 flow [2022-11-23 03:15:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:15:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:15:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-11-23 03:15:31,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-11-23 03:15:31,037 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2022-11-23 03:15:31,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2022-11-23 03:15:31,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:31,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2022-11-23 03:15:31,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:31,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:31,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:31,041 INFO L175 Difference]: Start difference. First operand has 90 places, 176 transitions, 802 flow. Second operand 3 states and 425 transitions. [2022-11-23 03:15:31,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 208 transitions, 1267 flow [2022-11-23 03:15:31,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 208 transitions, 1267 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-23 03:15:31,161 INFO L231 Difference]: Finished difference. Result has 93 places, 176 transitions, 848 flow [2022-11-23 03:15:31,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=848, PETRI_PLACES=93, PETRI_TRANSITIONS=176} [2022-11-23 03:15:31,163 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2022-11-23 03:15:31,163 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 176 transitions, 848 flow [2022-11-23 03:15:31,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:31,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:31,164 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] [2022-11-23 03:15:31,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 03:15:31,165 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:31,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:31,166 INFO L85 PathProgramCache]: Analyzing trace with hash 801327815, now seen corresponding path program 4 times [2022-11-23 03:15:31,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:31,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419513975] [2022-11-23 03:15:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:31,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:32,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:32,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:32,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419513975] [2022-11-23 03:15:32,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419513975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:32,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:32,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 03:15:32,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769181144] [2022-11-23 03:15:32,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:32,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:15:32,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:32,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:15:32,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:15:32,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 255 [2022-11-23 03:15:32,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 176 transitions, 848 flow. Second operand has 9 states, 9 states have (on average 118.11111111111111) internal successors, (1063), 9 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:32,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:32,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 255 [2022-11-23 03:15:32,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:37,379 INFO L130 PetriNetUnfolder]: 22007/37073 cut-off events. [2022-11-23 03:15:37,382 INFO L131 PetriNetUnfolder]: For 43836/45292 co-relation queries the response was YES. [2022-11-23 03:15:37,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109550 conditions, 37073 events. 22007/37073 cut-off events. For 43836/45292 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 303456 event pairs, 4530 based on Foata normal form. 540/36949 useless extension candidates. Maximal degree in co-relation 85571. Up to 23302 conditions per place. [2022-11-23 03:15:37,933 INFO L137 encePairwiseOnDemand]: 242/255 looper letters, 257 selfloop transitions, 84 changer transitions 0/366 dead transitions. [2022-11-23 03:15:37,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 366 transitions, 2300 flow [2022-11-23 03:15:37,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 03:15:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-23 03:15:37,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1793 transitions. [2022-11-23 03:15:37,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5022408963585434 [2022-11-23 03:15:37,940 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1793 transitions. [2022-11-23 03:15:37,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1793 transitions. [2022-11-23 03:15:37,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:37,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1793 transitions. [2022-11-23 03:15:37,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.07142857142858) internal successors, (1793), 14 states have internal predecessors, (1793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:37,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 255.0) internal successors, (3825), 15 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:37,955 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 255.0) internal successors, (3825), 15 states have internal predecessors, (3825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:37,955 INFO L175 Difference]: Start difference. First operand has 93 places, 176 transitions, 848 flow. Second operand 14 states and 1793 transitions. [2022-11-23 03:15:37,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 366 transitions, 2300 flow [2022-11-23 03:15:38,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 366 transitions, 2250 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:15:38,189 INFO L231 Difference]: Finished difference. Result has 115 places, 250 transitions, 1564 flow [2022-11-23 03:15:38,190 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1564, PETRI_PLACES=115, PETRI_TRANSITIONS=250} [2022-11-23 03:15:38,192 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2022-11-23 03:15:38,192 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 250 transitions, 1564 flow [2022-11-23 03:15:38,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.11111111111111) internal successors, (1063), 9 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:38,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:38,194 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] [2022-11-23 03:15:38,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 03:15:38,194 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash 438032119, now seen corresponding path program 5 times [2022-11-23 03:15:38,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:38,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778210851] [2022-11-23 03:15:38,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:38,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:38,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:38,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778210851] [2022-11-23 03:15:38,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778210851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:38,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:38,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 03:15:38,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790731680] [2022-11-23 03:15:38,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:38,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 03:15:38,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:38,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 03:15:38,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 03:15:38,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 255 [2022-11-23 03:15:38,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 250 transitions, 1564 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:38,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:38,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 255 [2022-11-23 03:15:38,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:42,972 INFO L130 PetriNetUnfolder]: 19637/34063 cut-off events. [2022-11-23 03:15:42,972 INFO L131 PetriNetUnfolder]: For 98502/100250 co-relation queries the response was YES. [2022-11-23 03:15:43,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117384 conditions, 34063 events. 19637/34063 cut-off events. For 98502/100250 co-relation queries the response was YES. Maximal size of possible extension queue 1133. Compared 288172 event pairs, 12367 based on Foata normal form. 748/33695 useless extension candidates. Maximal degree in co-relation 105522. Up to 25548 conditions per place. [2022-11-23 03:15:43,305 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 212 selfloop transitions, 33 changer transitions 0/305 dead transitions. [2022-11-23 03:15:43,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 305 transitions, 2400 flow [2022-11-23 03:15:43,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 03:15:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 03:15:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2022-11-23 03:15:43,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-11-23 03:15:43,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2022-11-23 03:15:43,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2022-11-23 03:15:43,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:43,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2022-11-23 03:15:43,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:43,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:43,319 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:43,319 INFO L175 Difference]: Start difference. First operand has 115 places, 250 transitions, 1564 flow. Second operand 3 states and 425 transitions. [2022-11-23 03:15:43,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 305 transitions, 2400 flow [2022-11-23 03:15:43,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 305 transitions, 2392 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-23 03:15:43,793 INFO L231 Difference]: Finished difference. Result has 118 places, 250 transitions, 1659 flow [2022-11-23 03:15:43,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1659, PETRI_PLACES=118, PETRI_TRANSITIONS=250} [2022-11-23 03:15:43,795 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2022-11-23 03:15:43,795 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 250 transitions, 1659 flow [2022-11-23 03:15:43,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:43,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:43,796 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] [2022-11-23 03:15:43,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 03:15:43,796 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:43,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:43,797 INFO L85 PathProgramCache]: Analyzing trace with hash 792585417, now seen corresponding path program 6 times [2022-11-23 03:15:43,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:43,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139256230] [2022-11-23 03:15:43,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:44,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:44,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139256230] [2022-11-23 03:15:44,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139256230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:44,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:44,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 03:15:44,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563108217] [2022-11-23 03:15:44,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:44,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:15:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:15:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:15:44,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2022-11-23 03:15:44,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 250 transitions, 1659 flow. Second operand has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:44,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:44,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2022-11-23 03:15:44,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:15:49,649 INFO L130 PetriNetUnfolder]: 20624/36044 cut-off events. [2022-11-23 03:15:49,649 INFO L131 PetriNetUnfolder]: For 113304/115325 co-relation queries the response was YES. [2022-11-23 03:15:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127463 conditions, 36044 events. 20624/36044 cut-off events. For 113304/115325 co-relation queries the response was YES. Maximal size of possible extension queue 1224. Compared 309063 event pairs, 8091 based on Foata normal form. 198/35469 useless extension candidates. Maximal degree in co-relation 114343. Up to 28804 conditions per place. [2022-11-23 03:15:50,241 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 235 selfloop transitions, 30 changer transitions 0/290 dead transitions. [2022-11-23 03:15:50,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 290 transitions, 2403 flow [2022-11-23 03:15:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:15:50,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-23 03:15:50,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 658 transitions. [2022-11-23 03:15:50,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.516078431372549 [2022-11-23 03:15:50,247 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 658 transitions. [2022-11-23 03:15:50,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 658 transitions. [2022-11-23 03:15:50,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:15:50,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 658 transitions. [2022-11-23 03:15:50,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:50,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:50,260 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 255.0) internal successors, (1530), 6 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:50,261 INFO L175 Difference]: Start difference. First operand has 118 places, 250 transitions, 1659 flow. Second operand 5 states and 658 transitions. [2022-11-23 03:15:50,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 290 transitions, 2403 flow [2022-11-23 03:15:50,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 290 transitions, 2319 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-23 03:15:50,788 INFO L231 Difference]: Finished difference. Result has 123 places, 262 transitions, 1803 flow [2022-11-23 03:15:50,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1585, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1803, PETRI_PLACES=123, PETRI_TRANSITIONS=262} [2022-11-23 03:15:50,789 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2022-11-23 03:15:50,789 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 262 transitions, 1803 flow [2022-11-23 03:15:50,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 123.2) internal successors, (616), 5 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:50,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:15:50,790 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] [2022-11-23 03:15:50,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 03:15:50,791 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:15:50,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:15:50,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2019761819, now seen corresponding path program 7 times [2022-11-23 03:15:50,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:15:50,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162817093] [2022-11-23 03:15:50,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:15:50,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:15:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:15:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:15:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:15:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162817093] [2022-11-23 03:15:51,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162817093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:15:51,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:15:51,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 03:15:51,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003893700] [2022-11-23 03:15:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:15:51,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 03:15:51,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:15:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 03:15:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 03:15:51,311 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 255 [2022-11-23 03:15:51,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 262 transitions, 1803 flow. Second operand has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:15:51,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:15:51,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 255 [2022-11-23 03:15:51,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:16:01,117 INFO L130 PetriNetUnfolder]: 43517/64484 cut-off events. [2022-11-23 03:16:01,118 INFO L131 PetriNetUnfolder]: For 206137/207462 co-relation queries the response was YES. [2022-11-23 03:16:01,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236378 conditions, 64484 events. 43517/64484 cut-off events. For 206137/207462 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 449750 event pairs, 15047 based on Foata normal form. 753/64904 useless extension candidates. Maximal degree in co-relation 214021. Up to 22235 conditions per place. [2022-11-23 03:16:01,762 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 659 selfloop transitions, 22 changer transitions 95/814 dead transitions. [2022-11-23 03:16:01,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 814 transitions, 6878 flow [2022-11-23 03:16:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:16:01,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-23 03:16:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1462 transitions. [2022-11-23 03:16:01,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2022-11-23 03:16:01,774 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1462 transitions. [2022-11-23 03:16:01,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1462 transitions. [2022-11-23 03:16:01,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:16:01,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1462 transitions. [2022-11-23 03:16:01,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.9090909090909) internal successors, (1462), 11 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:01,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:01,794 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:01,794 INFO L175 Difference]: Start difference. First operand has 123 places, 262 transitions, 1803 flow. Second operand 11 states and 1462 transitions. [2022-11-23 03:16:01,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 814 transitions, 6878 flow [2022-11-23 03:16:02,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 814 transitions, 6874 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-11-23 03:16:02,821 INFO L231 Difference]: Finished difference. Result has 138 places, 277 transitions, 1955 flow [2022-11-23 03:16:02,821 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1955, PETRI_PLACES=138, PETRI_TRANSITIONS=277} [2022-11-23 03:16:02,822 INFO L288 CegarLoopForPetriNet]: 53 programPoint places, 85 predicate places. [2022-11-23 03:16:02,822 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 277 transitions, 1955 flow [2022-11-23 03:16:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:02,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 03:16:02,823 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] [2022-11-23 03:16:02,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 03:16:02,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 03:16:02,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:16:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash -937866301, now seen corresponding path program 8 times [2022-11-23 03:16:02,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:16:02,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235962425] [2022-11-23 03:16:02,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:16:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:16:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:16:03,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 03:16:03,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:16:03,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235962425] [2022-11-23 03:16:03,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235962425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:16:03,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:16:03,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 03:16:03,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446122432] [2022-11-23 03:16:03,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:16:03,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:16:03,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:16:03,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:16:03,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-23 03:16:04,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2022-11-23 03:16:04,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 277 transitions, 1955 flow. Second operand has 7 states, 7 states have (on average 121.14285714285714) internal successors, (848), 7 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:04,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 03:16:04,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2022-11-23 03:16:04,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 03:16:10,670 INFO L130 PetriNetUnfolder]: 26006/45584 cut-off events. [2022-11-23 03:16:10,671 INFO L131 PetriNetUnfolder]: For 173431/175942 co-relation queries the response was YES. [2022-11-23 03:16:11,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172578 conditions, 45584 events. 26006/45584 cut-off events. For 173431/175942 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 404563 event pairs, 7541 based on Foata normal form. 984/45457 useless extension candidates. Maximal degree in co-relation 172499. Up to 28688 conditions per place. [2022-11-23 03:16:11,214 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 285 selfloop transitions, 74 changer transitions 0/409 dead transitions. [2022-11-23 03:16:11,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 409 transitions, 3432 flow [2022-11-23 03:16:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:16:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-23 03:16:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1055 transitions. [2022-11-23 03:16:11,218 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2022-11-23 03:16:11,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1055 transitions. [2022-11-23 03:16:11,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1055 transitions. [2022-11-23 03:16:11,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 03:16:11,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1055 transitions. [2022-11-23 03:16:11,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 131.875) internal successors, (1055), 8 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:11,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:11,229 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 03:16:11,229 INFO L175 Difference]: Start difference. First operand has 138 places, 277 transitions, 1955 flow. Second operand 8 states and 1055 transitions. [2022-11-23 03:16:11,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 409 transitions, 3432 flow