./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/queue_ok_longer.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_ok_longer.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8 --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 f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a --- 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-2329fc7 [2022-12-13 12:01:28,274 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 12:01:28,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 12:01:28,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 12:01:28,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 12:01:28,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 12:01:28,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 12:01:28,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 12:01:28,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 12:01:28,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 12:01:28,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 12:01:28,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 12:01:28,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 12:01:28,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 12:01:28,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 12:01:28,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 12:01:28,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 12:01:28,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 12:01:28,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 12:01:28,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 12:01:28,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 12:01:28,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 12:01:28,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 12:01:28,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 12:01:28,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 12:01:28,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 12:01:28,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 12:01:28,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 12:01:28,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 12:01:28,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 12:01:28,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 12:01:28,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 12:01:28,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 12:01:28,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 12:01:28,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 12:01:28,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 12:01:28,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 12:01:28,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 12:01:28,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 12:01:28,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 12:01:28,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 12:01:28,314 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 12:01:28,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 12:01:28,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 12:01:28,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 12:01:28,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 12:01:28,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 12:01:28,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 12:01:28,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 12:01:28,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 12:01:28,331 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 12:01:28,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 12:01:28,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 12:01:28,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 12:01:28,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:28,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 12:01:28,333 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 12:01:28,334 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 12:01:28,334 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f58af1aa15d4bec1241042c84c595fb9585ff7c461dd0b44f9fde0638838779a [2022-12-13 12:01:28,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 12:01:28,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 12:01:28,521 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 12:01:28,522 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 12:01:28,523 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 12:01:28,524 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/queue_ok_longer.i [2022-12-13 12:01:31,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 12:01:31,316 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 12:01:31,316 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/sv-benchmarks/c/pthread/queue_ok_longer.i [2022-12-13 12:01:31,327 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/data/344efe5b6/e999eedb3f60424aab5e846c35c307ae/FLAG17562fdf4 [2022-12-13 12:01:31,340 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/data/344efe5b6/e999eedb3f60424aab5e846c35c307ae [2022-12-13 12:01:31,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 12:01:31,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 12:01:31,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:31,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 12:01:31,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 12:01:31,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45bdadce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31, skipping insertion in model container [2022-12-13 12:01:31,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,358 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 12:01:31,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 12:01:31,722 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-12-13 12:01:31,728 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-12-13 12:01:31,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:31,739 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 12:01:31,767 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/sv-benchmarks/c/pthread/queue_ok_longer.i[43272,43285] [2022-12-13 12:01:31,770 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_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/sv-benchmarks/c/pthread/queue_ok_longer.i[43545,43558] [2022-12-13 12:01:31,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 12:01:31,805 INFO L208 MainTranslator]: Completed translation [2022-12-13 12:01:31,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31 WrapperNode [2022-12-13 12:01:31,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 12:01:31,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:31,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 12:01:31,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 12:01:31,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,864 INFO L138 Inliner]: procedures = 274, calls = 57, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 202 [2022-12-13 12:01:31,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 12:01:31,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 12:01:31,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 12:01:31,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 12:01:31,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 12:01:31,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 12:01:31,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 12:01:31,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 12:01:31,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (1/1) ... [2022-12-13 12:01:31,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 12:01:31,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:31,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 12:01:31,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 12:01:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 12:01:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 12:01:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 12:01:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 12:01:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 12:01:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 12:01:31,947 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 12:01:32,063 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 12:01:32,065 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 12:01:32,302 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 12:01:32,310 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 12:01:32,310 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 12:01:32,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:32 BoogieIcfgContainer [2022-12-13 12:01:32,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 12:01:32,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 12:01:32,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 12:01:32,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 12:01:32,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 12:01:31" (1/3) ... [2022-12-13 12:01:32,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:32, skipping insertion in model container [2022-12-13 12:01:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 12:01:31" (2/3) ... [2022-12-13 12:01:32,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c35ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 12:01:32, skipping insertion in model container [2022-12-13 12:01:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 12:01:32" (3/3) ... [2022-12-13 12:01:32,318 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_ok_longer.i [2022-12-13 12:01:32,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 12:01:32,331 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 12:01:32,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 12:01:32,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 12:01:32,392 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 12:01:32,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 229 transitions, 474 flow [2022-12-13 12:01:32,471 INFO L130 PetriNetUnfolder]: 13/227 cut-off events. [2022-12-13 12:01:32,471 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 12:01:32,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 227 events. 13/227 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 366 event pairs, 0 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2022-12-13 12:01:32,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 229 transitions, 474 flow [2022-12-13 12:01:32,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 217 transitions, 443 flow [2022-12-13 12:01:32,483 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 12:01:32,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 217 transitions, 443 flow [2022-12-13 12:01:32,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 217 transitions, 443 flow [2022-12-13 12:01:32,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 217 transitions, 443 flow [2022-12-13 12:01:32,540 INFO L130 PetriNetUnfolder]: 13/217 cut-off events. [2022-12-13 12:01:32,540 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 12:01:32,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 217 events. 13/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 146. Up to 3 conditions per place. [2022-12-13 12:01:32,545 INFO L119 LiptonReduction]: Number of co-enabled transitions 10630 [2022-12-13 12:01:38,922 INFO L134 LiptonReduction]: Checked pairs total: 20702 [2022-12-13 12:01:38,922 INFO L136 LiptonReduction]: Total number of compositions: 200 [2022-12-13 12:01:38,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 12:01:38,937 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;@635607a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 12:01:38,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 12:01:38,938 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2022-12-13 12:01:38,938 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 12:01:38,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:38,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 12:01:38,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:38,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash 884, now seen corresponding path program 1 times [2022-12-13 12:01:38,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248218342] [2022-12-13 12:01:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:39,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248218342] [2022-12-13 12:01:39,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248218342] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:39,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:39,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 12:01:39,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650260338] [2022-12-13 12:01:39,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:39,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 12:01:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 12:01:39,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 12:01:39,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 429 [2022-12-13 12:01:39,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 105 flow. Second operand has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:39,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 429 [2022-12-13 12:01:39,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:39,216 INFO L130 PetriNetUnfolder]: 874/1414 cut-off events. [2022-12-13 12:01:39,216 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2022-12-13 12:01:39,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1414 events. 874/1414 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6050 event pairs, 660 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 2657. Up to 1370 conditions per place. [2022-12-13 12:01:39,222 INFO L137 encePairwiseOnDemand]: 428/429 looper letters, 39 selfloop transitions, 0 changer transitions 1/47 dead transitions. [2022-12-13 12:01:39,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 47 transitions, 183 flow [2022-12-13 12:01:39,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 12:01:39,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 12:01:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 477 transitions. [2022-12-13 12:01:39,233 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5559440559440559 [2022-12-13 12:01:39,234 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 477 transitions. [2022-12-13 12:01:39,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 477 transitions. [2022-12-13 12:01:39,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:39,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 477 transitions. [2022-12-13 12:01:39,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.5) internal successors, (477), 2 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,245 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,247 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 105 flow. Second operand 2 states and 477 transitions. [2022-12-13 12:01:39,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 47 transitions, 183 flow [2022-12-13 12:01:39,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 12:01:39,250 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 96 flow [2022-12-13 12:01:39,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2022-12-13 12:01:39,254 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2022-12-13 12:01:39,255 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 96 flow [2022-12-13 12:01:39,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 218.5) internal successors, (437), 2 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:39,255 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:39,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 12:01:39,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:39,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:39,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1004507056, now seen corresponding path program 1 times [2022-12-13 12:01:39,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:39,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776810313] [2022-12-13 12:01:39,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:39,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:39,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:39,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776810313] [2022-12-13 12:01:39,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776810313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:39,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:39,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 12:01:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219499220] [2022-12-13 12:01:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:39,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:39,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:39,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:01:39,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:39,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:01:39,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:39,545 INFO L130 PetriNetUnfolder]: 203/415 cut-off events. [2022-12-13 12:01:39,545 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-12-13 12:01:39,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 415 events. 203/415 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1630 event pairs, 129 based on Foata normal form. 28/403 useless extension candidates. Maximal degree in co-relation 832. Up to 205 conditions per place. [2022-12-13 12:01:39,547 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 41 selfloop transitions, 2 changer transitions 5/53 dead transitions. [2022-12-13 12:01:39,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 207 flow [2022-12-13 12:01:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:01:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2022-12-13 12:01:39,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5337995337995338 [2022-12-13 12:01:39,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2022-12-13 12:01:39,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2022-12-13 12:01:39,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:39,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2022-12-13 12:01:39,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,558 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 96 flow. Second operand 3 states and 687 transitions. [2022-12-13 12:01:39,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 207 flow [2022-12-13 12:01:39,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 12:01:39,560 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 100 flow [2022-12-13 12:01:39,560 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2022-12-13 12:01:39,560 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2022-12-13 12:01:39,561 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 100 flow [2022-12-13 12:01:39,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,561 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:39,561 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] [2022-12-13 12:01:39,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 12:01:39,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:39,562 INFO L85 PathProgramCache]: Analyzing trace with hash -700684543, now seen corresponding path program 1 times [2022-12-13 12:01:39,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014948113] [2022-12-13 12:01:39,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:39,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:39,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:39,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:39,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014948113] [2022-12-13 12:01:39,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014948113] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:39,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:39,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:39,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298139235] [2022-12-13 12:01:39,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:39,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:39,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:39,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:39,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:39,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 429 [2022-12-13 12:01:39,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:39,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 429 [2022-12-13 12:01:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:39,770 INFO L130 PetriNetUnfolder]: 251/510 cut-off events. [2022-12-13 12:01:39,771 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 12:01:39,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 510 events. 251/510 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1862 event pairs, 161 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 1052. Up to 369 conditions per place. [2022-12-13 12:01:39,772 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 49 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2022-12-13 12:01:39,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 234 flow [2022-12-13 12:01:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:01:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 695 transitions. [2022-12-13 12:01:39,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.54001554001554 [2022-12-13 12:01:39,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 695 transitions. [2022-12-13 12:01:39,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 695 transitions. [2022-12-13 12:01:39,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:39,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 695 transitions. [2022-12-13 12:01:39,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,779 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 100 flow. Second operand 3 states and 695 transitions. [2022-12-13 12:01:39,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 234 flow [2022-12-13 12:01:39,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 58 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 12:01:39,781 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 115 flow [2022-12-13 12:01:39,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2022-12-13 12:01:39,782 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2022-12-13 12:01:39,782 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 115 flow [2022-12-13 12:01:39,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:39,782 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] [2022-12-13 12:01:39,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 12:01:39,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:39,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1749282964, now seen corresponding path program 1 times [2022-12-13 12:01:39,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:39,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599523821] [2022-12-13 12:01:39,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:39,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:39,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:39,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:39,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599523821] [2022-12-13 12:01:39,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599523821] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:39,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 12:01:39,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 12:01:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390123294] [2022-12-13 12:01:39,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:39,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 12:01:39,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 12:01:39,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 12:01:39,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 429 [2022-12-13 12:01:39,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:39,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:39,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 429 [2022-12-13 12:01:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:40,026 INFO L130 PetriNetUnfolder]: 236/525 cut-off events. [2022-12-13 12:01:40,027 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-13 12:01:40,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 525 events. 236/525 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2039 event pairs, 29 based on Foata normal form. 42/537 useless extension candidates. Maximal degree in co-relation 1123. Up to 419 conditions per place. [2022-12-13 12:01:40,029 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 44 selfloop transitions, 3 changer transitions 1/52 dead transitions. [2022-12-13 12:01:40,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 226 flow [2022-12-13 12:01:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 12:01:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 12:01:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-12-13 12:01:40,032 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5314685314685315 [2022-12-13 12:01:40,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-12-13 12:01:40,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-12-13 12:01:40,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:40,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-12-13 12:01:40,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,037 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 115 flow. Second operand 3 states and 684 transitions. [2022-12-13 12:01:40,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 226 flow [2022-12-13 12:01:40,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 223 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:40,039 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 116 flow [2022-12-13 12:01:40,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2022-12-13 12:01:40,040 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2022-12-13 12:01:40,040 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 116 flow [2022-12-13 12:01:40,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:40,040 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] [2022-12-13 12:01:40,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 12:01:40,041 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:40,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1909469368, now seen corresponding path program 1 times [2022-12-13 12:01:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:40,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097747673] [2022-12-13 12:01:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:40,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:40,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:40,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097747673] [2022-12-13 12:01:40,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097747673] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:40,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347520534] [2022-12-13 12:01:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:40,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:40,108 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:40,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 12:01:40,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:40,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 12:01:40,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:40,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347520534] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:40,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:40,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 12:01:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847182337] [2022-12-13 12:01:40,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:40,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:01:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:40,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:01:40,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 12:01:40,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:01:40,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:40,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:01:40,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:40,449 INFO L130 PetriNetUnfolder]: 252/550 cut-off events. [2022-12-13 12:01:40,449 INFO L131 PetriNetUnfolder]: For 35/36 co-relation queries the response was YES. [2022-12-13 12:01:40,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 550 events. 252/550 cut-off events. For 35/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1581 event pairs, 106 based on Foata normal form. 12/525 useless extension candidates. Maximal degree in co-relation 1226. Up to 250 conditions per place. [2022-12-13 12:01:40,451 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 71 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2022-12-13 12:01:40,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 376 flow [2022-12-13 12:01:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:01:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:01:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1362 transitions. [2022-12-13 12:01:40,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5291375291375291 [2022-12-13 12:01:40,454 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1362 transitions. [2022-12-13 12:01:40,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1362 transitions. [2022-12-13 12:01:40,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:40,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1362 transitions. [2022-12-13 12:01:40,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,460 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,460 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 116 flow. Second operand 6 states and 1362 transitions. [2022-12-13 12:01:40,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 376 flow [2022-12-13 12:01:40,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 373 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:40,462 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 176 flow [2022-12-13 12:01:40,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2022-12-13 12:01:40,463 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2022-12-13 12:01:40,463 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 176 flow [2022-12-13 12:01:40,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:40,464 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:40,464 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:40,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 12:01:40,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:40,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:40,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:40,666 INFO L85 PathProgramCache]: Analyzing trace with hash -685586353, now seen corresponding path program 2 times [2022-12-13 12:01:40,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:40,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662983302] [2022-12-13 12:01:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:40,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:40,889 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:40,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662983302] [2022-12-13 12:01:40,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662983302] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:40,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157839790] [2022-12-13 12:01:40,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:01:40,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:40,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:40,891 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:40,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 12:01:41,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:01:41,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:41,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 12:01:41,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:41,135 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:41,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:41,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157839790] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:41,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:41,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 12:01:41,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135992214] [2022-12-13 12:01:41,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:41,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 12:01:41,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:41,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 12:01:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 12:01:41,226 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:01:41,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 176 flow. Second operand has 13 states, 13 states have (on average 218.84615384615384) internal successors, (2845), 13 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:41,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:01:41,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:41,540 INFO L130 PetriNetUnfolder]: 438/976 cut-off events. [2022-12-13 12:01:41,541 INFO L131 PetriNetUnfolder]: For 320/321 co-relation queries the response was YES. [2022-12-13 12:01:41,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 976 events. 438/976 cut-off events. For 320/321 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2783 event pairs, 106 based on Foata normal form. 24/939 useless extension candidates. Maximal degree in co-relation 2436. Up to 250 conditions per place. [2022-12-13 12:01:41,546 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 137 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2022-12-13 12:01:41,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 164 transitions, 844 flow [2022-12-13 12:01:41,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 12:01:41,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 12:01:41,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2721 transitions. [2022-12-13 12:01:41,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5285547785547785 [2022-12-13 12:01:41,552 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2721 transitions. [2022-12-13 12:01:41,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2721 transitions. [2022-12-13 12:01:41,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:41,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2721 transitions. [2022-12-13 12:01:41,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 226.75) internal successors, (2721), 12 states have internal predecessors, (2721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 429.0) internal successors, (5577), 13 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,578 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 429.0) internal successors, (5577), 13 states have internal predecessors, (5577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,578 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 176 flow. Second operand 12 states and 2721 transitions. [2022-12-13 12:01:41,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 164 transitions, 844 flow [2022-12-13 12:01:41,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 164 transitions, 805 flow, removed 18 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:41,583 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 326 flow [2022-12-13 12:01:41,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=326, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2022-12-13 12:01:41,584 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2022-12-13 12:01:41,584 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 326 flow [2022-12-13 12:01:41,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.84615384615384) internal successors, (2845), 13 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:41,586 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:41,586 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:41,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 12:01:41,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:41,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:41,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:41,789 INFO L85 PathProgramCache]: Analyzing trace with hash -126875921, now seen corresponding path program 3 times [2022-12-13 12:01:41,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:41,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493688873] [2022-12-13 12:01:41,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:41,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:41,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:42,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:42,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493688873] [2022-12-13 12:01:42,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493688873] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:42,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566176422] [2022-12-13 12:01:42,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:01:42,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:42,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:42,214 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:42,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 12:01:42,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-13 12:01:42,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-13 12:01:42,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:43,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:01:43,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:43,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 12:01:43,168 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:01:43,176 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:01:43,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:01:43,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:43,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:01:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-12-13 12:01:43,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 12:01:43,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566176422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 12:01:43,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 12:01:43,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 18 [2022-12-13 12:01:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492827436] [2022-12-13 12:01:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 12:01:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 12:01:43,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 12:01:43,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2022-12-13 12:01:43,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 429 [2022-12-13 12:01:43,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 207.71428571428572) internal successors, (1454), 7 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:43,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 429 [2022-12-13 12:01:43,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:43,711 INFO L130 PetriNetUnfolder]: 740/1630 cut-off events. [2022-12-13 12:01:43,711 INFO L131 PetriNetUnfolder]: For 982/983 co-relation queries the response was YES. [2022-12-13 12:01:43,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4337 conditions, 1630 events. 740/1630 cut-off events. For 982/983 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 5788 event pairs, 170 based on Foata normal form. 0/1563 useless extension candidates. Maximal degree in co-relation 4320. Up to 1004 conditions per place. [2022-12-13 12:01:43,720 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 90 selfloop transitions, 11 changer transitions 4/109 dead transitions. [2022-12-13 12:01:43,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 109 transitions, 751 flow [2022-12-13 12:01:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 12:01:43,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 12:01:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1287 transitions. [2022-12-13 12:01:43,724 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-13 12:01:43,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1287 transitions. [2022-12-13 12:01:43,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1287 transitions. [2022-12-13 12:01:43,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:43,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1287 transitions. [2022-12-13 12:01:43,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.5) internal successors, (1287), 6 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,731 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,731 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 326 flow. Second operand 6 states and 1287 transitions. [2022-12-13 12:01:43,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 109 transitions, 751 flow [2022-12-13 12:01:43,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 109 transitions, 735 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 12:01:43,738 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 404 flow [2022-12-13 12:01:43,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=404, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2022-12-13 12:01:43,739 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2022-12-13 12:01:43,739 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 404 flow [2022-12-13 12:01:43,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 207.71428571428572) internal successors, (1454), 7 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:43,740 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:43,740 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:43,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 12:01:43,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:43,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1952975445, now seen corresponding path program 1 times [2022-12-13 12:01:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899733380] [2022-12-13 12:01:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:44,184 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:44,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899733380] [2022-12-13 12:01:44,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899733380] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:44,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008459889] [2022-12-13 12:01:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:44,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:44,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:44,185 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:44,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 12:01:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:44,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 12:01:44,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:44,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:44,647 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 283 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:44,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008459889] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:44,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:44,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 12:01:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549920116] [2022-12-13 12:01:44,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 12:01:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 12:01:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 12:01:44,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:01:44,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 404 flow. Second operand has 25 states, 25 states have (on average 219.32) internal successors, (5483), 25 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:44,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:44,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:01:44,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:45,718 INFO L130 PetriNetUnfolder]: 1295/3033 cut-off events. [2022-12-13 12:01:45,718 INFO L131 PetriNetUnfolder]: For 5646/5647 co-relation queries the response was YES. [2022-12-13 12:01:45,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 3033 events. 1295/3033 cut-off events. For 5646/5647 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 11042 event pairs, 152 based on Foata normal form. 96/3102 useless extension candidates. Maximal degree in co-relation 9831. Up to 749 conditions per place. [2022-12-13 12:01:45,734 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 377 selfloop transitions, 47 changer transitions 0/429 dead transitions. [2022-12-13 12:01:45,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 429 transitions, 3119 flow [2022-12-13 12:01:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 12:01:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-13 12:01:45,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5439 transitions. [2022-12-13 12:01:45,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5282634032634033 [2022-12-13 12:01:45,740 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5439 transitions. [2022-12-13 12:01:45,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5439 transitions. [2022-12-13 12:01:45,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:45,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5439 transitions. [2022-12-13 12:01:45,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 226.625) internal successors, (5439), 24 states have internal predecessors, (5439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:45,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 429.0) internal successors, (10725), 25 states have internal predecessors, (10725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:45,758 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 429.0) internal successors, (10725), 25 states have internal predecessors, (10725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:45,758 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 404 flow. Second operand 24 states and 5439 transitions. [2022-12-13 12:01:45,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 429 transitions, 3119 flow [2022-12-13 12:01:45,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 429 transitions, 3118 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 12:01:45,767 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 846 flow [2022-12-13 12:01:45,767 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=846, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2022-12-13 12:01:45,767 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 63 predicate places. [2022-12-13 12:01:45,767 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 846 flow [2022-12-13 12:01:45,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 219.32) internal successors, (5483), 25 states have internal predecessors, (5483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:45,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:45,769 INFO L209 CegarLoopForPetriNet]: trace histogram [22, 22, 22, 22, 12, 12, 12, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:45,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 12:01:45,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 12:01:45,971 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash 278819905, now seen corresponding path program 2 times [2022-12-13 12:01:45,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:45,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86188710] [2022-12-13 12:01:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:45,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:46,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:46,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86188710] [2022-12-13 12:01:46,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86188710] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:46,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632739194] [2022-12-13 12:01:46,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 12:01:46,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:46,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:46,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:46,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 12:01:47,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 12:01:47,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1361 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 12:01:47,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:47,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:47,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 1444 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:47,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632739194] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:01:47,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:01:47,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 12:01:47,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684227792] [2022-12-13 12:01:47,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:01:47,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 12:01:47,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:01:47,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 12:01:47,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 12:01:47,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:01:47,879 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 846 flow. Second operand has 49 states, 49 states have (on average 219.42857142857142) internal successors, (10752), 49 states have internal predecessors, (10752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:47,879 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:01:47,879 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:01:47,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:01:50,013 INFO L130 PetriNetUnfolder]: 2519/5961 cut-off events. [2022-12-13 12:01:50,013 INFO L131 PetriNetUnfolder]: For 44374/44375 co-relation queries the response was YES. [2022-12-13 12:01:50,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21397 conditions, 5961 events. 2519/5961 cut-off events. For 44374/44375 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 21857 event pairs, 152 based on Foata normal form. 192/6126 useless extension candidates. Maximal degree in co-relation 21365. Up to 1565 conditions per place. [2022-12-13 12:01:50,041 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 761 selfloop transitions, 95 changer transitions 0/861 dead transitions. [2022-12-13 12:01:50,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 861 transitions, 7035 flow [2022-12-13 12:01:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 12:01:50,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 12:01:50,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 10875 transitions. [2022-12-13 12:01:50,053 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5281177156177156 [2022-12-13 12:01:50,053 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 10875 transitions. [2022-12-13 12:01:50,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 10875 transitions. [2022-12-13 12:01:50,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:01:50,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 10875 transitions. [2022-12-13 12:01:50,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 226.5625) internal successors, (10875), 48 states have internal predecessors, (10875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:50,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 429.0) internal successors, (21021), 49 states have internal predecessors, (21021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:50,098 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 429.0) internal successors, (21021), 49 states have internal predecessors, (21021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:50,098 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 846 flow. Second operand 48 states and 10875 transitions. [2022-12-13 12:01:50,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 861 transitions, 7035 flow [2022-12-13 12:01:50,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 861 transitions, 7000 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-12-13 12:01:50,137 INFO L231 Difference]: Finished difference. Result has 174 places, 148 transitions, 1862 flow [2022-12-13 12:01:50,138 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1862, PETRI_PLACES=174, PETRI_TRANSITIONS=148} [2022-12-13 12:01:50,138 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 126 predicate places. [2022-12-13 12:01:50,138 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 148 transitions, 1862 flow [2022-12-13 12:01:50,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 219.42857142857142) internal successors, (10752), 49 states have internal predecessors, (10752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:01:50,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:01:50,140 INFO L209 CegarLoopForPetriNet]: trace histogram [46, 46, 46, 46, 24, 24, 24, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:01:50,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 12:01:50,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 12:01:50,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:01:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:01:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1183546879, now seen corresponding path program 3 times [2022-12-13 12:01:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:01:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838623251] [2022-12-13 12:01:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:01:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:01:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:01:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6466 backedges. 0 proven. 6466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:01:52,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:01:52,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838623251] [2022-12-13 12:01:52,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838623251] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:01:52,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660023717] [2022-12-13 12:01:52,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 12:01:52,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:01:52,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:01:52,720 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:01:52,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 12:01:53,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-12-13 12:01:53,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:01:53,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 70 conjunts are in the unsatisfiable core [2022-12-13 12:01:53,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:01:54,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-13 12:01:54,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:54,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 12:01:54,552 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:01:54,560 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:01:54,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:01:54,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:54,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:01:54,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 12:01:54,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:54,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-12-13 12:01:54,814 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:01:54,819 INFO L321 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-12-13 12:01:54,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 27 [2022-12-13 12:01:54,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:01:54,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:01:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6466 backedges. 591 proven. 225 refuted. 0 times theorem prover too weak. 5650 trivial. 0 not checked. [2022-12-13 12:01:54,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:01:55,092 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2063 Int) (v_ArrVal_2066 Int) (v_ArrVal_2065 (Array Int Int))) (or (< (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604) v_ArrVal_2063)) |c_~#stored_elements~0.base| v_ArrVal_2065) |c_~#queue~0.base|))) (store .cse0 (+ |c_~#queue~0.offset| (* (select .cse0 .cse1) 4)) v_ArrVal_2066)) .cse1)) 400) (not (<= v_ArrVal_2063 (+ |c_t1Thread1of1ForFork0_enqueue_#t~mem40#1| 1))))) is different from false [2022-12-13 12:01:55,106 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2063 Int) (v_ArrVal_2066 Int) (v_ArrVal_2065 (Array Int Int))) (let ((.cse0 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse1 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_2063) (< (let ((.cse3 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse2 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store .cse0 .cse1 v_ArrVal_2063)) |c_~#stored_elements~0.base| v_ArrVal_2065) |c_~#queue~0.base|))) (store .cse2 (+ |c_~#queue~0.offset| (* (select .cse2 .cse3) 4)) v_ArrVal_2066)) .cse3)) 400)))) is different from false [2022-12-13 12:01:55,130 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2063 Int) (v_ArrVal_2066 Int) (v_ArrVal_2065 (Array Int Int)) (v_ArrVal_2061 Int)) (let ((.cse2 (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (or (< (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2061) .cse3 v_ArrVal_2063)) |c_~#stored_elements~0.base| v_ArrVal_2065) |c_~#queue~0.base|))) (store .cse0 (+ (* (select .cse0 .cse1) 4) |c_~#queue~0.offset|) v_ArrVal_2066)) .cse1)) 400) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2063)))) is different from false [2022-12-13 12:01:55,156 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2063 Int) (v_ArrVal_2066 Int) (v_ArrVal_2059 Int) (v_ArrVal_2065 (Array Int Int)) (v_ArrVal_2061 Int)) (let ((.cse2 (store (select |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base|) (+ (* |c_t1Thread1of1ForFork0_enqueue_#t~mem36#1| 4) |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2059)) (.cse3 (+ |c_t1Thread1of1ForFork0_enqueue_~q#1.offset| 1604))) (or (< (let ((.cse1 (+ |c_~#queue~0.offset| 1604))) (select (let ((.cse0 (select (store (store |c_#memory_int| |c_t1Thread1of1ForFork0_enqueue_~q#1.base| (store (store .cse2 (+ 1608 |c_t1Thread1of1ForFork0_enqueue_~q#1.offset|) v_ArrVal_2061) .cse3 v_ArrVal_2063)) |c_~#stored_elements~0.base| v_ArrVal_2065) |c_~#queue~0.base|))) (store .cse0 (+ (* 4 (select .cse0 .cse1)) |c_~#queue~0.offset|) v_ArrVal_2066)) .cse1)) 400) (< (+ (select .cse2 .cse3) 1) v_ArrVal_2063)))) is different from false [2022-12-13 12:01:59,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:01:59,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 179 treesize of output 129 [2022-12-13 12:01:59,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:01:59,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 211 treesize of output 211 [2022-12-13 12:01:59,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 103 [2022-12-13 12:01:59,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 121 [2022-12-13 12:01:59,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-12-13 12:01:59,634 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 12:01:59,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 68 [2022-12-13 12:02:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6466 backedges. 329 proven. 221 refuted. 44 times theorem prover too weak. 5650 trivial. 222 not checked. [2022-12-13 12:02:02,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660023717] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:02:02,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:02:02,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 11, 13] total 71 [2022-12-13 12:02:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908451369] [2022-12-13 12:02:02,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:02:02,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2022-12-13 12:02:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:02:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2022-12-13 12:02:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=3124, Unknown=19, NotChecked=532, Total=4970 [2022-12-13 12:02:02,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 429 [2022-12-13 12:02:02,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 148 transitions, 1862 flow. Second operand has 71 states, 71 states have (on average 168.18309859154928) internal successors, (11941), 71 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:02:02,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:02:02,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 429 [2022-12-13 12:02:02,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:03:26,670 INFO L130 PetriNetUnfolder]: 5200/11862 cut-off events. [2022-12-13 12:03:26,670 INFO L131 PetriNetUnfolder]: For 53148/53150 co-relation queries the response was YES. [2022-12-13 12:03:26,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44584 conditions, 11862 events. 5200/11862 cut-off events. For 53148/53150 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 54353 event pairs, 121 based on Foata normal form. 379/12204 useless extension candidates. Maximal degree in co-relation 44527. Up to 3168 conditions per place. [2022-12-13 12:03:26,733 INFO L137 encePairwiseOnDemand]: 414/429 looper letters, 1713 selfloop transitions, 1302 changer transitions 6/3024 dead transitions. [2022-12-13 12:03:26,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 3024 transitions, 22040 flow [2022-12-13 12:03:26,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 432 states. [2022-12-13 12:03:26,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2022-12-13 12:03:26,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 73101 transitions. [2022-12-13 12:03:26,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39444120694120693 [2022-12-13 12:03:26,781 INFO L72 ComplementDD]: Start complementDD. Operand 432 states and 73101 transitions. [2022-12-13 12:03:26,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 432 states and 73101 transitions. [2022-12-13 12:03:26,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:03:26,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 432 states and 73101 transitions. [2022-12-13 12:03:26,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 433 states, 432 states have (on average 169.21527777777777) internal successors, (73101), 432 states have internal predecessors, (73101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:26,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 433 states, 433 states have (on average 429.0) internal successors, (185757), 433 states have internal predecessors, (185757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:27,012 INFO L81 ComplementDD]: Finished complementDD. Result has 433 states, 433 states have (on average 429.0) internal successors, (185757), 433 states have internal predecessors, (185757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:27,012 INFO L175 Difference]: Start difference. First operand has 174 places, 148 transitions, 1862 flow. Second operand 432 states and 73101 transitions. [2022-12-13 12:03:27,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 3024 transitions, 22040 flow [2022-12-13 12:03:27,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 3024 transitions, 21841 flow, removed 0 selfloop flow, removed 21 redundant places. [2022-12-13 12:03:27,311 INFO L231 Difference]: Finished difference. Result has 771 places, 1530 transitions, 16592 flow [2022-12-13 12:03:27,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=432, PETRI_FLOW=16592, PETRI_PLACES=771, PETRI_TRANSITIONS=1530} [2022-12-13 12:03:27,311 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 723 predicate places. [2022-12-13 12:03:27,312 INFO L495 AbstractCegarLoop]: Abstraction has has 771 places, 1530 transitions, 16592 flow [2022-12-13 12:03:27,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 168.18309859154928) internal successors, (11941), 71 states have internal predecessors, (11941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:27,313 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:03:27,313 INFO L209 CegarLoopForPetriNet]: trace histogram [47, 47, 47, 47, 34, 34, 34, 34, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:03:27,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 12:03:27,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:27,515 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:03:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:03:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1516220098, now seen corresponding path program 4 times [2022-12-13 12:03:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:03:27,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478686363] [2022-12-13 12:03:27,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:03:27,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:03:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:03:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 7291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:30,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:03:30,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478686363] [2022-12-13 12:03:30,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478686363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:03:30,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141628447] [2022-12-13 12:03:30,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 12:03:30,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:03:30,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:03:30,012 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:03:30,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 12:03:30,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 12:03:30,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:03:30,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 2612 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-13 12:03:30,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:03:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 7291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:31,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:03:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7291 backedges. 0 proven. 7291 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:03:33,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141628447] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 12:03:33,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 12:03:33,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 99 [2022-12-13 12:03:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518201033] [2022-12-13 12:03:33,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 12:03:33,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-12-13 12:03:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 12:03:33,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-12-13 12:03:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4851, Invalid=4851, Unknown=0, NotChecked=0, Total=9702 [2022-12-13 12:03:33,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 429 [2022-12-13 12:03:33,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 1530 transitions, 16592 flow. Second operand has 99 states, 99 states have (on average 219.6969696969697) internal successors, (21750), 99 states have internal predecessors, (21750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:03:33,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 12:03:33,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 429 [2022-12-13 12:03:33,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 12:04:01,737 INFO L130 PetriNetUnfolder]: 9163/22392 cut-off events. [2022-12-13 12:04:01,738 INFO L131 PetriNetUnfolder]: For 11879518/11879518 co-relation queries the response was YES. [2022-12-13 12:04:02,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469407 conditions, 22392 events. 9163/22392 cut-off events. For 11879518/11879518 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 106265 event pairs, 169 based on Foata normal form. 784/23140 useless extension candidates. Maximal degree in co-relation 469162. Up to 6220 conditions per place. [2022-12-13 12:04:02,219 INFO L137 encePairwiseOnDemand]: 424/429 looper letters, 3160 selfloop transitions, 482 changer transitions 0/3646 dead transitions. [2022-12-13 12:04:02,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 3646 transitions, 96195 flow [2022-12-13 12:04:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-12-13 12:04:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2022-12-13 12:04:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 22200 transitions. [2022-12-13 12:04:02,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5280433851862423 [2022-12-13 12:04:02,232 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 22200 transitions. [2022-12-13 12:04:02,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 22200 transitions. [2022-12-13 12:04:02,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 12:04:02,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 22200 transitions. [2022-12-13 12:04:02,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 226.53061224489795) internal successors, (22200), 98 states have internal predecessors, (22200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:02,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 429.0) internal successors, (42471), 99 states have internal predecessors, (42471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:02,275 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 429.0) internal successors, (42471), 99 states have internal predecessors, (42471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:02,275 INFO L175 Difference]: Start difference. First operand has 771 places, 1530 transitions, 16592 flow. Second operand 98 states and 22200 transitions. [2022-12-13 12:04:02,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 3646 transitions, 96195 flow [2022-12-13 12:04:13,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 3646 transitions, 87418 flow, removed 1979 selfloop flow, removed 55 redundant places. [2022-12-13 12:04:13,478 INFO L231 Difference]: Finished difference. Result has 863 places, 1774 transitions, 17703 flow [2022-12-13 12:04:13,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=12218, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=17703, PETRI_PLACES=863, PETRI_TRANSITIONS=1774} [2022-12-13 12:04:13,479 INFO L288 CegarLoopForPetriNet]: 48 programPoint places, 815 predicate places. [2022-12-13 12:04:13,479 INFO L495 AbstractCegarLoop]: Abstraction has has 863 places, 1774 transitions, 17703 flow [2022-12-13 12:04:13,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 219.6969696969697) internal successors, (21750), 99 states have internal predecessors, (21750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 12:04:13,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 12:04:13,482 INFO L209 CegarLoopForPetriNet]: trace histogram [96, 96, 96, 96, 71, 71, 71, 71, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 12:04:13,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 12:04:13,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:13,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-13 12:04:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 12:04:13,685 INFO L85 PathProgramCache]: Analyzing trace with hash -438617206, now seen corresponding path program 5 times [2022-12-13 12:04:13,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 12:04:13,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742705561] [2022-12-13 12:04:13,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 12:04:13,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 12:04:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 12:04:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30951 backedges. 0 proven. 30951 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 12:04:22,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 12:04:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742705561] [2022-12-13 12:04:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742705561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 12:04:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932677981] [2022-12-13 12:04:22,236 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 12:04:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 12:04:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 12:04:22,237 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 12:04:22,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fd286ac1-146f-4ad8-ae2a-bd4d792bbb6b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 12:04:26,806 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-12-13 12:04:26,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 12:04:26,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 195 conjunts are in the unsatisfiable core [2022-12-13 12:04:26,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 12:04:26,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-13 12:04:26,980 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 12:04:26,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 38 [2022-12-13 12:04:27,178 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:27,190 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-13 12:04:27,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2022-12-13 12:04:27,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:27,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-12-13 12:04:27,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 44 [2022-12-13 12:04:27,692 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 12:04:27,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 67 [2022-12-13 12:04:27,977 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:27,987 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2022-12-13 12:04:27,988 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 58 [2022-12-13 12:04:28,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:28,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-12-13 12:04:28,271 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2022-12-13 12:04:28,385 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 12:04:28,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2022-12-13 12:04:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:28,642 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-13 12:04:28,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2022-12-13 12:04:28,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:28,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-12-13 12:04:28,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 43 [2022-12-13 12:04:29,006 INFO L321 Elim1Store]: treesize reduction 25, result has 47.9 percent of original size [2022-12-13 12:04:29,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 63 [2022-12-13 12:04:29,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:29,267 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-12-13 12:04:29,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 62 [2022-12-13 12:04:29,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:29,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-12-13 12:04:29,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2022-12-13 12:04:29,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:29,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:04:29,813 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:29,818 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:04:29,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:04:29,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:29,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:04:30,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 12:04:30,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:30,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:04:30,318 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:30,324 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:04:30,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:04:30,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:30,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:04:30,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 12:04:30,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:30,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-12-13 12:04:30,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:30,913 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:04:30,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:04:31,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:31,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:04:31,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2022-12-13 12:04:31,277 INFO L321 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2022-12-13 12:04:31,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2022-12-13 12:04:31,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 12:04:31,442 INFO L321 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2022-12-13 12:04:31,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 27 [2022-12-13 12:04:31,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 12:04:31,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 12:04:31,519 INFO L134 CoverageAnalysis]: Checked inductivity of 30951 backedges. 10982 proven. 99 refuted. 0 times theorem prover too weak. 19870 trivial. 0 not checked. [2022-12-13 12:04:31,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 12:14:09,612 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_t1Thread1of1ForFork0_~i~0#1_357| Int) (v_ArrVal_4549 Int) (|v_t1Thread1of1ForFork0_~i~0#1_356| Int) (v_ArrVal_4547 Int) (v_ArrVal_4558 Int) (v_ArrVal_4559 Int) (v_ArrVal_4556 Int) (v_ArrVal_4546 Int) (v_ArrVal_4568 Int) (v_ArrVal_4543 Int) (v_ArrVal_4566 Int) (v_ArrVal_4563 Int) (v_ArrVal_4553 Int) (v_ArrVal_4561 Int) (v_ArrVal_4551 Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_441| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_445| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_443| Int) (|v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_447| Int)) (let ((.cse7 (select |c_#memory_int| |c_~#queue~0.base|))) (let ((.cse0 (store .cse7 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_447| 4) |c_~#queue~0.offset|) v_ArrVal_4543)) (.cse10 (+ 1608 |c_~#queue~0.offset|)) (.cse1 (+ |c_~#queue~0.offset| 1604))) (let ((.cse12 (let ((.cse13 (store |c_#memory_int| |c_~#queue~0.base| (store (store .cse0 .cse10 v_ArrVal_4546) .cse1 v_ArrVal_4547)))) (store .cse13 |c_~#stored_elements~0.base| (store (select .cse13 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |c_t1Thread1of1ForFork0_~i~0#1| 4)) v_ArrVal_4549))))) (let ((.cse4 (select .cse12 |c_~#queue~0.base|))) (let ((.cse5 (store .cse4 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_445| 4) |c_~#queue~0.offset|) v_ArrVal_4551))) (let ((.cse9 (let ((.cse11 (store .cse12 |c_~#queue~0.base| (store (store .cse5 .cse10 v_ArrVal_4553) .cse1 v_ArrVal_4556)))) (store .cse11 |c_~#stored_elements~0.base| (store (select .cse11 |c_~#stored_elements~0.base|) (+ (* |v_t1Thread1of1ForFork0_~i~0#1_357| 4) |c_~#stored_elements~0.offset|) v_ArrVal_4558))))) (let ((.cse6 (select .cse9 |c_~#queue~0.base|))) (let ((.cse3 (store .cse6 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_443| 4) |c_~#queue~0.offset|) v_ArrVal_4559))) (let ((.cse2 (select (let ((.cse8 (store .cse9 |c_~#queue~0.base| (store (store .cse3 .cse10 v_ArrVal_4561) .cse1 v_ArrVal_4563)))) (store .cse8 |c_~#stored_elements~0.base| (store (select .cse8 |c_~#stored_elements~0.base|) (+ |c_~#stored_elements~0.offset| (* |v_t1Thread1of1ForFork0_~i~0#1_356| 4)) v_ArrVal_4566))) |c_~#queue~0.base|))) (or (< (+ (select .cse0 .cse1) 1) v_ArrVal_4547) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_441| (select .cse2 .cse1))) (not (= 400 (select (store .cse2 (+ (* |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_441| 4) |c_~#queue~0.offset|) v_ArrVal_4568) .cse1))) (not (<= (+ |c_t1Thread1of1ForFork0_~i~0#1| 1) |v_t1Thread1of1ForFork0_~i~0#1_357|)) (< (+ (select .cse3 .cse1) 1) v_ArrVal_4563) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_445| (select .cse4 .cse1))) (< (+ (select .cse5 .cse1) 1) v_ArrVal_4556) (not (<= (+ |v_t1Thread1of1ForFork0_~i~0#1_357| 1) |v_t1Thread1of1ForFork0_~i~0#1_356|)) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_443| (select .cse6 .cse1))) (not (<= |v_t1Thread1of1ForFork0_enqueue_#t~mem36#1_447| (select .cse7 .cse1)))))))))))))) is different from false