./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- 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 16:12:54,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:12:54,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:12:54,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:12:54,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:12:54,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:12:54,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:12:54,348 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:12:54,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:12:54,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:12:54,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:12:54,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:12:54,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:12:54,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:12:54,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:12:54,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:12:54,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:12:54,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:12:54,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:12:54,369 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:12:54,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:12:54,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:12:54,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:12:54,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:12:54,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:12:54,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:12:54,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:12:54,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:12:54,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:12:54,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:12:54,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:12:54,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:12:54,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:12:54,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:12:54,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:12:54,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:12:54,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:12:54,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:12:54,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:12:54,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:12:54,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:12:54,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 16:12:54,425 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:12:54,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:12:54,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:12:54,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:12:54,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:12:54,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:12:54,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:12:54,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:12:54,427 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:12:54,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:12:54,428 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:12:54,429 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:12:54,429 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:12:54,429 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:12:54,429 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:12:54,429 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:12:54,429 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:12:54,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:12:54,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:12:54,430 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:12:54,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:12:54,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:12:54,430 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:12:54,431 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:12:54,431 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-12-13 16:12:54,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:12:54,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:12:54,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:12:54,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:12:54,608 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:12:54,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 16:12:57,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:12:57,293 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:12:57,294 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 16:12:57,298 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/743186c8e/dc2b3e714b3a44c9a1f224d099a2a655/FLAG1597e49b9 [2022-12-13 16:12:57,309 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/743186c8e/dc2b3e714b3a44c9a1f224d099a2a655 [2022-12-13 16:12:57,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:12:57,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:12:57,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:12:57,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:12:57,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:12:57,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f652ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57, skipping insertion in model container [2022-12-13 16:12:57,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:12:57,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:12:57,480 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 16:12:57,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:12:57,499 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:12:57,530 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 16:12:57,532 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:12:57,544 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:12:57,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57 WrapperNode [2022-12-13 16:12:57,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:12:57,545 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:12:57,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:12:57,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:12:57,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,579 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 193 [2022-12-13 16:12:57,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:12:57,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:12:57,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:12:57,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:12:57,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,600 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:12:57,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:12:57,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:12:57,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:12:57,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (1/1) ... [2022-12-13 16:12:57,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:12:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:12:57,629 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:12:57,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:12:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:12:57,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 16:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:12:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:12:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:12:57,661 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 16:12:57,744 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:12:57,746 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:12:58,045 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:12:58,058 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:12:58,059 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 16:12:58,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:12:58 BoogieIcfgContainer [2022-12-13 16:12:58,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:12:58,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:12:58,064 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:12:58,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:12:58,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:12:57" (1/3) ... [2022-12-13 16:12:58,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6215a4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:12:58, skipping insertion in model container [2022-12-13 16:12:58,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:12:57" (2/3) ... [2022-12-13 16:12:58,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6215a4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:12:58, skipping insertion in model container [2022-12-13 16:12:58,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:12:58" (3/3) ... [2022-12-13 16:12:58,070 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-12-13 16:12:58,079 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:12:58,088 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:12:58,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:12:58,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:12:58,163 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:12:58,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 294 transitions, 612 flow [2022-12-13 16:12:58,286 INFO L130 PetriNetUnfolder]: 25/291 cut-off events. [2022-12-13 16:12:58,286 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:12:58,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 291 events. 25/291 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 177 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 234. Up to 2 conditions per place. [2022-12-13 16:12:58,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 294 transitions, 612 flow [2022-12-13 16:12:58,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 280 transitions, 578 flow [2022-12-13 16:12:58,299 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:12:58,307 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 280 transitions, 578 flow [2022-12-13 16:12:58,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 280 transitions, 578 flow [2022-12-13 16:12:58,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 280 transitions, 578 flow [2022-12-13 16:12:58,372 INFO L130 PetriNetUnfolder]: 25/280 cut-off events. [2022-12-13 16:12:58,373 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:12:58,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 280 events. 25/280 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 177 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 234. Up to 2 conditions per place. [2022-12-13 16:12:58,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-12-13 16:13:05,118 INFO L134 LiptonReduction]: Checked pairs total: 4653 [2022-12-13 16:13:05,118 INFO L136 LiptonReduction]: Total number of compositions: 299 [2022-12-13 16:13:05,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:13:05,141 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;@68c7265, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:13:05,141 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 16:13:05,149 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2022-12-13 16:13:05,150 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:13:05,150 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:05,151 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] [2022-12-13 16:13:05,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:05,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:05,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1355053137, now seen corresponding path program 1 times [2022-12-13 16:13:05,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:05,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860026900] [2022-12-13 16:13:05,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:05,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:05,524 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 16:13:05,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:05,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860026900] [2022-12-13 16:13:05,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860026900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:05,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:13:05,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 16:13:05,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724533067] [2022-12-13 16:13:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:05,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 16:13:05,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 16:13:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 16:13:05,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 593 [2022-12-13 16:13:05,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 16:13:05,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:05,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 593 [2022-12-13 16:13:05,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:05,993 INFO L130 PetriNetUnfolder]: 1617/2310 cut-off events. [2022-12-13 16:13:05,993 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 16:13:05,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 2310 events. 1617/2310 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10646 event pairs, 879 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 1264. Up to 739 conditions per place. [2022-12-13 16:13:06,002 INFO L137 encePairwiseOnDemand]: 583/593 looper letters, 26 selfloop transitions, 8 changer transitions 56/96 dead transitions. [2022-12-13 16:13:06,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 426 flow [2022-12-13 16:13:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:13:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:13:06,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1347 transitions. [2022-12-13 16:13:06,016 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4543001686340641 [2022-12-13 16:13:06,017 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1347 transitions. [2022-12-13 16:13:06,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1347 transitions. [2022-12-13 16:13:06,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:06,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1347 transitions. [2022-12-13 16:13:06,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 269.4) internal successors, (1347), 5 states have internal predecessors, (1347), 0 states have call successors, (0), 0 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 16:13:06,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 593.0) internal successors, (3558), 6 states have internal predecessors, (3558), 0 states have call successors, (0), 0 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 16:13:06,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 593.0) internal successors, (3558), 6 states have internal predecessors, (3558), 0 states have call successors, (0), 0 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 16:13:06,041 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1347 transitions. [2022-12-13 16:13:06,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 426 flow [2022-12-13 16:13:06,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 16:13:06,047 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 130 flow [2022-12-13 16:13:06,048 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=130, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2022-12-13 16:13:06,051 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2022-12-13 16:13:06,051 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 130 flow [2022-12-13 16:13:06,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 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 16:13:06,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:06,052 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 16:13:06,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 16:13:06,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:06,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:06,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1701481001, now seen corresponding path program 1 times [2022-12-13 16:13:06,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:06,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616054161] [2022-12-13 16:13:06,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:06,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:06,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616054161] [2022-12-13 16:13:06,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616054161] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273788517] [2022-12-13 16:13:06,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:06,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:06,199 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:06,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 16:13:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:06,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:13:06,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:06,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:06,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:13:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:06,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273788517] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:06,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:13:06,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2022-12-13 16:13:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302844615] [2022-12-13 16:13:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:06,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:13:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:13:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:13:06,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 593 [2022-12-13 16:13:06,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 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 16:13:06,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:06,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 593 [2022-12-13 16:13:06,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:06,634 INFO L130 PetriNetUnfolder]: 641/936 cut-off events. [2022-12-13 16:13:06,634 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 16:13:06,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1884 conditions, 936 events. 641/936 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3545 event pairs, 185 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1874. Up to 543 conditions per place. [2022-12-13 16:13:06,638 INFO L137 encePairwiseOnDemand]: 587/593 looper letters, 42 selfloop transitions, 5 changer transitions 0/52 dead transitions. [2022-12-13 16:13:06,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 52 transitions, 250 flow [2022-12-13 16:13:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:13:06,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:13:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1240 transitions. [2022-12-13 16:13:06,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.418212478920742 [2022-12-13 16:13:06,648 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1240 transitions. [2022-12-13 16:13:06,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1240 transitions. [2022-12-13 16:13:06,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:06,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1240 transitions. [2022-12-13 16:13:06,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 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 16:13:06,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 593.0) internal successors, (3558), 6 states have internal predecessors, (3558), 0 states have call successors, (0), 0 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 16:13:06,655 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 593.0) internal successors, (3558), 6 states have internal predecessors, (3558), 0 states have call successors, (0), 0 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 16:13:06,655 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 130 flow. Second operand 5 states and 1240 transitions. [2022-12-13 16:13:06,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 52 transitions, 250 flow [2022-12-13 16:13:06,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 232 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-12-13 16:13:06,657 INFO L231 Difference]: Finished difference. Result has 41 places, 41 transitions, 135 flow [2022-12-13 16:13:06,657 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=41, PETRI_TRANSITIONS=41} [2022-12-13 16:13:06,657 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2022-12-13 16:13:06,657 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 41 transitions, 135 flow [2022-12-13 16:13:06,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 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 16:13:06,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:06,658 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:06,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:13:06,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:06,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:06,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:06,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1904858460, now seen corresponding path program 1 times [2022-12-13 16:13:06,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:06,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134773699] [2022-12-13 16:13:06,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:06,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:07,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:07,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134773699] [2022-12-13 16:13:07,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134773699] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:07,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075704568] [2022-12-13 16:13:07,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:07,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:07,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:07,018 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:07,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 16:13:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:07,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:13:07,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:07,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:07,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:13:07,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:07,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075704568] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:07,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:13:07,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2022-12-13 16:13:07,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52561298] [2022-12-13 16:13:07,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 16:13:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 16:13:07,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:13:07,428 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 593 [2022-12-13 16:13:07,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 41 transitions, 135 flow. Second operand has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 16:13:07,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:07,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 593 [2022-12-13 16:13:07,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:07,724 INFO L130 PetriNetUnfolder]: 829/1360 cut-off events. [2022-12-13 16:13:07,724 INFO L131 PetriNetUnfolder]: For 691/837 co-relation queries the response was YES. [2022-12-13 16:13:07,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3074 conditions, 1360 events. 829/1360 cut-off events. For 691/837 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6642 event pairs, 253 based on Foata normal form. 146/1331 useless extension candidates. Maximal degree in co-relation 3027. Up to 547 conditions per place. [2022-12-13 16:13:07,731 INFO L137 encePairwiseOnDemand]: 584/593 looper letters, 88 selfloop transitions, 15 changer transitions 0/107 dead transitions. [2022-12-13 16:13:07,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 544 flow [2022-12-13 16:13:07,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:13:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 16:13:07,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2192 transitions. [2022-12-13 16:13:07,735 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4107176316282556 [2022-12-13 16:13:07,735 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2192 transitions. [2022-12-13 16:13:07,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2192 transitions. [2022-12-13 16:13:07,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:07,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2192 transitions. [2022-12-13 16:13:07,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 243.55555555555554) internal successors, (2192), 9 states have internal predecessors, (2192), 0 states have call successors, (0), 0 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 16:13:07,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 593.0) internal successors, (5930), 10 states have internal predecessors, (5930), 0 states have call successors, (0), 0 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 16:13:07,745 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 593.0) internal successors, (5930), 10 states have internal predecessors, (5930), 0 states have call successors, (0), 0 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 16:13:07,745 INFO L175 Difference]: Start difference. First operand has 41 places, 41 transitions, 135 flow. Second operand 9 states and 2192 transitions. [2022-12-13 16:13:07,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 544 flow [2022-12-13 16:13:07,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 107 transitions, 528 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 16:13:07,747 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 213 flow [2022-12-13 16:13:07,747 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=213, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2022-12-13 16:13:07,748 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2022-12-13 16:13:07,748 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 213 flow [2022-12-13 16:13:07,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 0 states have call successors, (0), 0 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 16:13:07,749 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:07,749 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:07,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 16:13:07,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 16:13:07,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:07,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1750317390, now seen corresponding path program 2 times [2022-12-13 16:13:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:07,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600063344] [2022-12-13 16:13:07,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:07,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:08,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:08,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:08,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600063344] [2022-12-13 16:13:08,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600063344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:08,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359073372] [2022-12-13 16:13:08,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:13:08,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:08,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:08,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:08,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 16:13:08,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:13:08,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:13:08,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:13:08,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:13:08,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:13:08,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359073372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:08,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:13:08,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 16:13:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540350647] [2022-12-13 16:13:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:08,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:13:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:13:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:13:08,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 593 [2022-12-13 16:13:08,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:08,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:08,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 593 [2022-12-13 16:13:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:08,617 INFO L130 PetriNetUnfolder]: 1387/2194 cut-off events. [2022-12-13 16:13:08,617 INFO L131 PetriNetUnfolder]: For 2276/2518 co-relation queries the response was YES. [2022-12-13 16:13:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6307 conditions, 2194 events. 1387/2194 cut-off events. For 2276/2518 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11060 event pairs, 553 based on Foata normal form. 243/2422 useless extension candidates. Maximal degree in co-relation 6255. Up to 1187 conditions per place. [2022-12-13 16:13:08,627 INFO L137 encePairwiseOnDemand]: 586/593 looper letters, 91 selfloop transitions, 8 changer transitions 11/114 dead transitions. [2022-12-13 16:13:08,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 114 transitions, 681 flow [2022-12-13 16:13:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:13:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:13:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1628 transitions. [2022-12-13 16:13:08,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4575604272062957 [2022-12-13 16:13:08,632 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1628 transitions. [2022-12-13 16:13:08,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1628 transitions. [2022-12-13 16:13:08,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:08,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1628 transitions. [2022-12-13 16:13:08,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 271.3333333333333) internal successors, (1628), 6 states have internal predecessors, (1628), 0 states have call successors, (0), 0 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 16:13:08,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:08,643 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:08,644 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 213 flow. Second operand 6 states and 1628 transitions. [2022-12-13 16:13:08,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 114 transitions, 681 flow [2022-12-13 16:13:08,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 16:13:08,657 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 283 flow [2022-12-13 16:13:08,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2022-12-13 16:13:08,658 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 19 predicate places. [2022-12-13 16:13:08,658 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 283 flow [2022-12-13 16:13:08,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:08,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:08,659 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:08,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 16:13:08,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:08,861 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:08,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1069773970, now seen corresponding path program 3 times [2022-12-13 16:13:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:08,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443304465] [2022-12-13 16:13:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:08,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:09,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:09,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443304465] [2022-12-13 16:13:09,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443304465] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:09,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843170320] [2022-12-13 16:13:09,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:13:09,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:09,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:09,124 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:09,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 16:13:09,601 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 16:13:09,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:13:09,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:13:09,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:09,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:13:09,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843170320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:09,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:13:09,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 16:13:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822757142] [2022-12-13 16:13:09,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:09,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:13:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:09,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:13:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:13:09,731 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 593 [2022-12-13 16:13:09,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 283 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:09,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:09,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 593 [2022-12-13 16:13:09,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:10,096 INFO L130 PetriNetUnfolder]: 1615/2619 cut-off events. [2022-12-13 16:13:10,096 INFO L131 PetriNetUnfolder]: For 4523/4805 co-relation queries the response was YES. [2022-12-13 16:13:10,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8376 conditions, 2619 events. 1615/2619 cut-off events. For 4523/4805 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14501 event pairs, 591 based on Foata normal form. 283/2865 useless extension candidates. Maximal degree in co-relation 8347. Up to 1151 conditions per place. [2022-12-13 16:13:10,108 INFO L137 encePairwiseOnDemand]: 586/593 looper letters, 87 selfloop transitions, 15 changer transitions 11/117 dead transitions. [2022-12-13 16:13:10,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 117 transitions, 757 flow [2022-12-13 16:13:10,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:13:10,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:13:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1636 transitions. [2022-12-13 16:13:10,111 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4598088813940416 [2022-12-13 16:13:10,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1636 transitions. [2022-12-13 16:13:10,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1636 transitions. [2022-12-13 16:13:10,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:10,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1636 transitions. [2022-12-13 16:13:10,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 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 16:13:10,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:10,118 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:10,118 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 283 flow. Second operand 6 states and 1636 transitions. [2022-12-13 16:13:10,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 117 transitions, 757 flow [2022-12-13 16:13:10,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 117 transitions, 742 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-12-13 16:13:10,144 INFO L231 Difference]: Finished difference. Result has 64 places, 66 transitions, 398 flow [2022-12-13 16:13:10,144 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=398, PETRI_PLACES=64, PETRI_TRANSITIONS=66} [2022-12-13 16:13:10,145 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2022-12-13 16:13:10,145 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 66 transitions, 398 flow [2022-12-13 16:13:10,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:10,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:10,146 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:10,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 16:13:10,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:10,347 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1181070588, now seen corresponding path program 4 times [2022-12-13 16:13:10,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:10,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056341088] [2022-12-13 16:13:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:10,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:10,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056341088] [2022-12-13 16:13:10,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056341088] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:10,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322425078] [2022-12-13 16:13:10,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:13:10,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:10,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:10,511 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:10,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 16:13:10,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:13:10,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:13:10,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:13:10,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:10,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:13:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:10,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322425078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:13:10,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:13:10,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2022-12-13 16:13:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368239213] [2022-12-13 16:13:10,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:13:10,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 16:13:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 16:13:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 16:13:11,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 593 [2022-12-13 16:13:11,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 66 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 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 16:13:11,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:11,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 593 [2022-12-13 16:13:11,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:11,999 INFO L130 PetriNetUnfolder]: 2205/3638 cut-off events. [2022-12-13 16:13:11,999 INFO L131 PetriNetUnfolder]: For 9042/9046 co-relation queries the response was YES. [2022-12-13 16:13:12,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12406 conditions, 3638 events. 2205/3638 cut-off events. For 9042/9046 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21208 event pairs, 50 based on Foata normal form. 18/3652 useless extension candidates. Maximal degree in co-relation 12374. Up to 984 conditions per place. [2022-12-13 16:13:12,027 INFO L137 encePairwiseOnDemand]: 575/593 looper letters, 160 selfloop transitions, 99 changer transitions 0/262 dead transitions. [2022-12-13 16:13:12,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 262 transitions, 1958 flow [2022-12-13 16:13:12,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:13:12,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-13 16:13:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5412 transitions. [2022-12-13 16:13:12,042 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4148397976391231 [2022-12-13 16:13:12,042 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5412 transitions. [2022-12-13 16:13:12,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5412 transitions. [2022-12-13 16:13:12,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:12,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5412 transitions. [2022-12-13 16:13:12,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 246.0) internal successors, (5412), 22 states have internal predecessors, (5412), 0 states have call successors, (0), 0 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 16:13:12,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 593.0) internal successors, (13639), 23 states have internal predecessors, (13639), 0 states have call successors, (0), 0 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 16:13:12,073 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 593.0) internal successors, (13639), 23 states have internal predecessors, (13639), 0 states have call successors, (0), 0 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 16:13:12,073 INFO L175 Difference]: Start difference. First operand has 64 places, 66 transitions, 398 flow. Second operand 22 states and 5412 transitions. [2022-12-13 16:13:12,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 262 transitions, 1958 flow [2022-12-13 16:13:12,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 262 transitions, 1912 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-12-13 16:13:12,095 INFO L231 Difference]: Finished difference. Result has 98 places, 141 transitions, 1316 flow [2022-12-13 16:13:12,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1316, PETRI_PLACES=98, PETRI_TRANSITIONS=141} [2022-12-13 16:13:12,096 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2022-12-13 16:13:12,096 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 141 transitions, 1316 flow [2022-12-13 16:13:12,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 0 states have call successors, (0), 0 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 16:13:12,097 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:12,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:12,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 16:13:12,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 16:13:12,300 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:12,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1780254566, now seen corresponding path program 5 times [2022-12-13 16:13:12,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:12,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653729275] [2022-12-13 16:13:12,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:12,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:12,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:12,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653729275] [2022-12-13 16:13:12,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653729275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:12,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32596247] [2022-12-13 16:13:12,539 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:13:12,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:12,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:12,540 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:12,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 16:13:12,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:13:12,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:13:12,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 16:13:12,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:12,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:13:12,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:12,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32596247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:13:12,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 16:13:12,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 16 [2022-12-13 16:13:12,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754452336] [2022-12-13 16:13:12,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 16:13:12,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 16:13:12,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:12,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 16:13:12,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-12-13 16:13:13,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 593 [2022-12-13 16:13:13,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 141 transitions, 1316 flow. Second operand has 16 states, 16 states have (on average 240.9375) internal successors, (3855), 16 states have internal predecessors, (3855), 0 states have call successors, (0), 0 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 16:13:13,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:13,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 593 [2022-12-13 16:13:13,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:14,449 INFO L130 PetriNetUnfolder]: 3564/5764 cut-off events. [2022-12-13 16:13:14,449 INFO L131 PetriNetUnfolder]: For 31846/31850 co-relation queries the response was YES. [2022-12-13 16:13:14,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25634 conditions, 5764 events. 3564/5764 cut-off events. For 31846/31850 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 35480 event pairs, 326 based on Foata normal form. 26/5788 useless extension candidates. Maximal degree in co-relation 25550. Up to 1335 conditions per place. [2022-12-13 16:13:14,477 INFO L137 encePairwiseOnDemand]: 575/593 looper letters, 248 selfloop transitions, 167 changer transitions 0/418 dead transitions. [2022-12-13 16:13:14,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 418 transitions, 4189 flow [2022-12-13 16:13:14,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 16:13:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 16:13:14,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4722 transitions. [2022-12-13 16:13:14,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41910002662643114 [2022-12-13 16:13:14,489 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4722 transitions. [2022-12-13 16:13:14,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4722 transitions. [2022-12-13 16:13:14,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:14,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4722 transitions. [2022-12-13 16:13:14,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 248.52631578947367) internal successors, (4722), 19 states have internal predecessors, (4722), 0 states have call successors, (0), 0 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 16:13:14,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 593.0) internal successors, (11860), 20 states have internal predecessors, (11860), 0 states have call successors, (0), 0 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 16:13:14,514 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 593.0) internal successors, (11860), 20 states have internal predecessors, (11860), 0 states have call successors, (0), 0 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 16:13:14,515 INFO L175 Difference]: Start difference. First operand has 98 places, 141 transitions, 1316 flow. Second operand 19 states and 4722 transitions. [2022-12-13 16:13:14,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 418 transitions, 4189 flow [2022-12-13 16:13:14,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 418 transitions, 4052 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-12-13 16:13:14,676 INFO L231 Difference]: Finished difference. Result has 125 places, 247 transitions, 2987 flow [2022-12-13 16:13:14,676 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2987, PETRI_PLACES=125, PETRI_TRANSITIONS=247} [2022-12-13 16:13:14,677 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2022-12-13 16:13:14,677 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 247 transitions, 2987 flow [2022-12-13 16:13:14,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 240.9375) internal successors, (3855), 16 states have internal predecessors, (3855), 0 states have call successors, (0), 0 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 16:13:14,678 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:14,678 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:14,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 16:13:14,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:14,879 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:14,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:14,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1430954508, now seen corresponding path program 6 times [2022-12-13 16:13:14,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:14,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160601317] [2022-12-13 16:13:14,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:14,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:15,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:13:15,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160601317] [2022-12-13 16:13:15,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160601317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:15,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27061770] [2022-12-13 16:13:15,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:13:15,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:15,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:15,040 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:15,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 16:13:15,133 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-12-13 16:13:15,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:13:15,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 16:13:15,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:13:15,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:13:15,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27061770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:13:15,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:13:15,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2022-12-13 16:13:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443257125] [2022-12-13 16:13:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:13:15,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:13:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:13:15,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:13:15,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 16:13:15,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 593 [2022-12-13 16:13:15,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 247 transitions, 2987 flow. Second operand has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:15,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:13:15,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 593 [2022-12-13 16:13:15,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:13:16,158 INFO L130 PetriNetUnfolder]: 3491/5552 cut-off events. [2022-12-13 16:13:16,159 INFO L131 PetriNetUnfolder]: For 52650/52794 co-relation queries the response was YES. [2022-12-13 16:13:16,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29697 conditions, 5552 events. 3491/5552 cut-off events. For 52650/52794 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 33476 event pairs, 790 based on Foata normal form. 108/5639 useless extension candidates. Maximal degree in co-relation 29595. Up to 2628 conditions per place. [2022-12-13 16:13:16,197 INFO L137 encePairwiseOnDemand]: 586/593 looper letters, 196 selfloop transitions, 67 changer transitions 13/307 dead transitions. [2022-12-13 16:13:16,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 307 transitions, 3981 flow [2022-12-13 16:13:16,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 16:13:16,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 16:13:16,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1630 transitions. [2022-12-13 16:13:16,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45812254075323217 [2022-12-13 16:13:16,199 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1630 transitions. [2022-12-13 16:13:16,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1630 transitions. [2022-12-13 16:13:16,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:13:16,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1630 transitions. [2022-12-13 16:13:16,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 271.6666666666667) internal successors, (1630), 6 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 16:13:16,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:16,204 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 0 states have call successors, (0), 0 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 16:13:16,204 INFO L175 Difference]: Start difference. First operand has 125 places, 247 transitions, 2987 flow. Second operand 6 states and 1630 transitions. [2022-12-13 16:13:16,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 307 transitions, 3981 flow [2022-12-13 16:13:16,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 307 transitions, 3791 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-12-13 16:13:16,402 INFO L231 Difference]: Finished difference. Result has 129 places, 251 transitions, 3091 flow [2022-12-13 16:13:16,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3091, PETRI_PLACES=129, PETRI_TRANSITIONS=251} [2022-12-13 16:13:16,403 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2022-12-13 16:13:16,403 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 251 transitions, 3091 flow [2022-12-13 16:13:16,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 262.6666666666667) internal successors, (1576), 6 states have internal predecessors, (1576), 0 states have call successors, (0), 0 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 16:13:16,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:13:16,404 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:13:16,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 16:13:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:16,605 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:13:16,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:13:16,606 INFO L85 PathProgramCache]: Analyzing trace with hash -860440735, now seen corresponding path program 1 times [2022-12-13 16:13:16,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:13:16,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991273576] [2022-12-13 16:13:16,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:16,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:13:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:13:18,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991273576] [2022-12-13 16:13:18,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991273576] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 16:13:18,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717206651] [2022-12-13 16:13:18,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:13:18,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:13:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:13:18,296 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:13:18,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 16:13:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:13:18,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 67 conjunts are in the unsatisfiable core [2022-12-13 16:13:18,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:13:18,487 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-12-13 16:13:18,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-12-13 16:13:18,567 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 16:13:18,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 21 [2022-12-13 16:13:18,643 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-12-13 16:13:18,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2022-12-13 16:13:18,708 INFO L321 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2022-12-13 16:13:18,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 25 [2022-12-13 16:13:18,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2022-12-13 16:13:19,311 INFO L321 Elim1Store]: treesize reduction 36, result has 46.3 percent of original size [2022-12-13 16:13:19,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 52 [2022-12-13 16:13:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:13:19,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:14:47,905 INFO L321 Elim1Store]: treesize reduction 106, result has 71.4 percent of original size [2022-12-13 16:14:47,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 1718 treesize of output 1021 [2022-12-13 16:14:48,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-13 16:14:48,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1108 treesize of output 1060 [2022-12-13 16:14:48,155 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 16:14:48,155 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 49 treesize of output 41 [2022-12-13 16:14:48,477 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 16:14:48,477 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 41 treesize of output 33 [2022-12-13 16:14:48,646 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-13 16:14:48,646 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 41 treesize of output 33 [2022-12-13 16:14:48,852 INFO L321 Elim1Store]: treesize reduction 10, result has 83.6 percent of original size [2022-12-13 16:14:48,853 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 104 [2022-12-13 16:22:41,807 INFO L217 Elim1Store]: Index analysis took 104 ms [2022-12-13 16:25:40,661 WARN L230 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2022-12-13 16:25:40,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2022-12-13 16:25:40,662 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 16:25:40,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 16:25:40,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:25:40,865 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.popContext(SimplifyDDA.java:748) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walkParam(SimplifyDDA.java:528) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:365) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:265) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1(Elim1Store.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:427) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) ... 63 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 82 more [2022-12-13 16:25:40,872 INFO L158 Benchmark]: Toolchain (without parser) took 763560.00ms. Allocated memory was 174.1MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 113.4MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2022-12-13 16:25:40,873 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 68.5MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:25:40,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 232.35ms. Allocated memory is still 174.1MB. Free memory was 113.0MB in the beginning and 146.8MB in the end (delta: -33.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-12-13 16:25:40,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.79ms. Allocated memory is still 174.1MB. Free memory was 146.8MB in the beginning and 144.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 16:25:40,876 INFO L158 Benchmark]: Boogie Preprocessor took 22.93ms. Allocated memory is still 174.1MB. Free memory was 144.2MB in the beginning and 142.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:25:40,877 INFO L158 Benchmark]: RCFGBuilder took 458.00ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 120.2MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-12-13 16:25:40,877 INFO L158 Benchmark]: TraceAbstraction took 762806.68ms. Allocated memory was 174.1MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 119.5MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. [2022-12-13 16:25:40,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 102.8MB. Free memory was 68.6MB in the beginning and 68.5MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 232.35ms. Allocated memory is still 174.1MB. Free memory was 113.0MB in the beginning and 146.8MB in the end (delta: -33.8MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.79ms. Allocated memory is still 174.1MB. Free memory was 146.8MB in the beginning and 144.2MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.93ms. Allocated memory is still 174.1MB. Free memory was 144.2MB in the beginning and 142.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 458.00ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 120.2MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 762806.68ms. Allocated memory was 174.1MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 119.5MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 3.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.8s, 265 PlacesBefore, 39 PlacesAfterwards, 280 TransitionsBefore, 36 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 8 FixpointIterations, 186 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 56 TrivialYvCompositions, 6 ConcurrentYvCompositions, 18 ChoiceCompositions, 299 TotalNumberOfCompositions, 4653 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2848, independent: 2693, independent conditional: 0, independent unconditional: 2693, dependent: 155, dependent conditional: 0, dependent unconditional: 155, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1152, independent: 1106, independent conditional: 0, independent unconditional: 1106, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2848, independent: 1587, independent conditional: 0, independent unconditional: 1587, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 1152, unknown conditional: 0, unknown unconditional: 1152] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 107, Positive conditional cache size: 0, Positive unconditional cache size: 107, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:192) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- 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 16:25:42,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 16:25:42,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 16:25:42,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 16:25:42,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 16:25:42,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 16:25:42,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 16:25:42,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 16:25:42,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 16:25:42,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 16:25:42,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 16:25:42,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 16:25:42,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 16:25:42,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 16:25:42,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 16:25:42,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 16:25:42,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 16:25:42,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 16:25:42,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 16:25:42,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 16:25:42,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 16:25:42,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 16:25:42,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 16:25:42,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 16:25:42,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 16:25:42,542 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 16:25:42,542 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 16:25:42,543 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 16:25:42,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 16:25:42,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 16:25:42,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 16:25:42,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 16:25:42,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 16:25:42,546 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 16:25:42,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 16:25:42,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 16:25:42,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 16:25:42,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 16:25:42,553 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 16:25:42,554 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 16:25:42,555 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 16:25:42,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 16:25:42,577 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 16:25:42,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 16:25:42,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 16:25:42,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 16:25:42,578 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 16:25:42,578 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 16:25:42,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 16:25:42,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 16:25:42,579 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 16:25:42,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 16:25:42,579 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 16:25:42,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 16:25:42,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 16:25:42,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:25:42,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 16:25:42,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 16:25:42,583 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 16:25:42,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 16:25:42,583 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 16:25:42,583 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 16:25:42,583 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-12-13 16:25:42,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 16:25:42,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 16:25:42,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 16:25:42,849 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 16:25:42,849 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 16:25:42,851 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 16:25:45,464 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 16:25:45,592 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 16:25:45,593 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-12-13 16:25:45,598 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/2491d0f14/60e0b33adf364c049f3c759059392841/FLAG20382d22c [2022-12-13 16:25:45,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/data/2491d0f14/60e0b33adf364c049f3c759059392841 [2022-12-13 16:25:45,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 16:25:45,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 16:25:45,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 16:25:45,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 16:25:45,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 16:25:45,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18a0c276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45, skipping insertion in model container [2022-12-13 16:25:45,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 16:25:45,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:25:45,765 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 16:25:45,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:25:45,781 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 16:25:45,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 16:25:45,795 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 16:25:45,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:25:45,801 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 16:25:45,818 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_a9f28ac6-9bb3-4edf-8722-2c6275165b26/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-12-13 16:25:45,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 16:25:45,833 INFO L208 MainTranslator]: Completed translation [2022-12-13 16:25:45,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45 WrapperNode [2022-12-13 16:25:45,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 16:25:45,834 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 16:25:45,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 16:25:45,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 16:25:45,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,865 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 190 [2022-12-13 16:25:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 16:25:45,866 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 16:25:45,866 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 16:25:45,866 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 16:25:45,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,878 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,895 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,899 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 16:25:45,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 16:25:45,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 16:25:45,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 16:25:45,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (1/1) ... [2022-12-13 16:25:45,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 16:25:45,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:25:45,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 16:25:45,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 16:25:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 16:25:45,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 16:25:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 16:25:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 16:25:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 16:25:45,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 16:25:45,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 16:25:45,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 16:25:45,956 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 16:25:46,061 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 16:25:46,063 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 16:25:46,503 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 16:25:46,512 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 16:25:46,512 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 16:25:46,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:25:46 BoogieIcfgContainer [2022-12-13 16:25:46,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 16:25:46,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 16:25:46,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 16:25:46,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 16:25:46,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 04:25:45" (1/3) ... [2022-12-13 16:25:46,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460979af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:25:46, skipping insertion in model container [2022-12-13 16:25:46,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 04:25:45" (2/3) ... [2022-12-13 16:25:46,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460979af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 04:25:46, skipping insertion in model container [2022-12-13 16:25:46,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 04:25:46" (3/3) ... [2022-12-13 16:25:46,519 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-12-13 16:25:46,525 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 16:25:46,533 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 16:25:46,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 16:25:46,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 16:25:46,593 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 16:25:46,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 291 transitions, 606 flow [2022-12-13 16:25:46,717 INFO L130 PetriNetUnfolder]: 25/288 cut-off events. [2022-12-13 16:25:46,717 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:25:46,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 25/288 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 177 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-12-13 16:25:46,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 291 transitions, 606 flow [2022-12-13 16:25:46,726 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 262 places, 277 transitions, 572 flow [2022-12-13 16:25:46,730 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 16:25:46,737 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 262 places, 277 transitions, 572 flow [2022-12-13 16:25:46,740 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 262 places, 277 transitions, 572 flow [2022-12-13 16:25:46,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 262 places, 277 transitions, 572 flow [2022-12-13 16:25:46,790 INFO L130 PetriNetUnfolder]: 25/277 cut-off events. [2022-12-13 16:25:46,790 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:25:46,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 277 events. 25/277 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 175 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-12-13 16:25:46,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2022-12-13 16:26:05,428 INFO L134 LiptonReduction]: Checked pairs total: 4551 [2022-12-13 16:26:05,429 INFO L136 LiptonReduction]: Total number of compositions: 298 [2022-12-13 16:26:05,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 16:26:05,444 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;@593455ac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 16:26:05,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 16:26:05,450 INFO L130 PetriNetUnfolder]: 7/35 cut-off events. [2022-12-13 16:26:05,450 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 16:26:05,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:05,450 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] [2022-12-13 16:26:05,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:05,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 619835810, now seen corresponding path program 1 times [2022-12-13 16:26:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689025465] [2022-12-13 16:26:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:05,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:05,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:05,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:05,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 16:26:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:05,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 16:26:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:05,736 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 16:26:05,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:26:05,737 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:05,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689025465] [2022-12-13 16:26:05,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689025465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:05,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:05,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 16:26:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205506469] [2022-12-13 16:26:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:05,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:26:05,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:05,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:26:05,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:26:05,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 589 [2022-12-13 16:26:05,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 265.2) internal successors, (1326), 5 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 16:26:05,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:05,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 589 [2022-12-13 16:26:05,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:06,250 INFO L130 PetriNetUnfolder]: 963/1396 cut-off events. [2022-12-13 16:26:06,250 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-12-13 16:26:06,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 1396 events. 963/1396 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6185 event pairs, 225 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 2517. Up to 736 conditions per place. [2022-12-13 16:26:06,258 INFO L137 encePairwiseOnDemand]: 584/589 looper letters, 41 selfloop transitions, 3 changer transitions 17/66 dead transitions. [2022-12-13 16:26:06,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 293 flow [2022-12-13 16:26:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:26:06,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:26:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1367 transitions. [2022-12-13 16:26:06,277 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46417657045840405 [2022-12-13 16:26:06,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1367 transitions. [2022-12-13 16:26:06,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1367 transitions. [2022-12-13 16:26:06,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:06,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1367 transitions. [2022-12-13 16:26:06,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 273.4) internal successors, (1367), 5 states have internal predecessors, (1367), 0 states have call successors, (0), 0 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 16:26:06,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 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 16:26:06,300 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 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 16:26:06,302 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 90 flow. Second operand 5 states and 1367 transitions. [2022-12-13 16:26:06,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 293 flow [2022-12-13 16:26:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 66 transitions, 267 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 16:26:06,309 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 94 flow [2022-12-13 16:26:06,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=94, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2022-12-13 16:26:06,313 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2022-12-13 16:26:06,313 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 94 flow [2022-12-13 16:26:06,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 265.2) internal successors, (1326), 5 states have internal predecessors, (1326), 0 states have call successors, (0), 0 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 16:26:06,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:06,314 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] [2022-12-13 16:26:06,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 16:26:06,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:06,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:06,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:06,516 INFO L85 PathProgramCache]: Analyzing trace with hash -571644360, now seen corresponding path program 1 times [2022-12-13 16:26:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:06,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981233001] [2022-12-13 16:26:06,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:06,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:06,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:06,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:06,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 16:26:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:06,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 16:26:06,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:06,756 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 16:26:06,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:26:06,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:06,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981233001] [2022-12-13 16:26:06,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981233001] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:06,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:06,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 16:26:06,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707356086] [2022-12-13 16:26:06,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:06,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 16:26:06,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 16:26:06,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 16:26:06,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 589 [2022-12-13 16:26:06,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 0 states have call successors, (0), 0 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 16:26:06,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:06,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 589 [2022-12-13 16:26:06,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:07,491 INFO L130 PetriNetUnfolder]: 901/1323 cut-off events. [2022-12-13 16:26:07,491 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-12-13 16:26:07,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2875 conditions, 1323 events. 901/1323 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5404 event pairs, 476 based on Foata normal form. 42/1047 useless extension candidates. Maximal degree in co-relation 2867. Up to 1005 conditions per place. [2022-12-13 16:26:07,497 INFO L137 encePairwiseOnDemand]: 578/589 looper letters, 28 selfloop transitions, 8 changer transitions 31/72 dead transitions. [2022-12-13 16:26:07,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 72 transitions, 306 flow [2022-12-13 16:26:07,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 16:26:07,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 16:26:07,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1295 transitions. [2022-12-13 16:26:07,501 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4397283531409168 [2022-12-13 16:26:07,501 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1295 transitions. [2022-12-13 16:26:07,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1295 transitions. [2022-12-13 16:26:07,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:07,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1295 transitions. [2022-12-13 16:26:07,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.0) internal successors, (1295), 5 states have internal predecessors, (1295), 0 states have call successors, (0), 0 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 16:26:07,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 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 16:26:07,507 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 589.0) internal successors, (3534), 6 states have internal predecessors, (3534), 0 states have call successors, (0), 0 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 16:26:07,507 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 94 flow. Second operand 5 states and 1295 transitions. [2022-12-13 16:26:07,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 72 transitions, 306 flow [2022-12-13 16:26:07,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 72 transitions, 299 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-13 16:26:07,509 INFO L231 Difference]: Finished difference. Result has 42 places, 41 transitions, 140 flow [2022-12-13 16:26:07,509 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=42, PETRI_TRANSITIONS=41} [2022-12-13 16:26:07,510 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2022-12-13 16:26:07,510 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 41 transitions, 140 flow [2022-12-13 16:26:07,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 249.6) internal successors, (1248), 5 states have internal predecessors, (1248), 0 states have call successors, (0), 0 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 16:26:07,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:07,511 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:07,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 16:26:07,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:07,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:07,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:07,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1535158375, now seen corresponding path program 1 times [2022-12-13 16:26:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:07,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767233631] [2022-12-13 16:26:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:26:07,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:07,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:07,714 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:07,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 16:26:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:07,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:07,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:08,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:26:08,097 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:08,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767233631] [2022-12-13 16:26:08,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767233631] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:08,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:08,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:26:08,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147766510] [2022-12-13 16:26:08,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:08,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:26:08,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:26:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:26:08,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 589 [2022-12-13 16:26:08,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 41 transitions, 140 flow. Second operand has 10 states, 10 states have (on average 254.9) internal successors, (2549), 10 states have internal predecessors, (2549), 0 states have call successors, (0), 0 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 16:26:08,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:08,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 589 [2022-12-13 16:26:08,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:09,133 INFO L130 PetriNetUnfolder]: 907/1502 cut-off events. [2022-12-13 16:26:09,133 INFO L131 PetriNetUnfolder]: For 392/392 co-relation queries the response was YES. [2022-12-13 16:26:09,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 1502 events. 907/1502 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 7213 event pairs, 333 based on Foata normal form. 0/1330 useless extension candidates. Maximal degree in co-relation 3278. Up to 720 conditions per place. [2022-12-13 16:26:09,138 INFO L137 encePairwiseOnDemand]: 578/589 looper letters, 92 selfloop transitions, 15 changer transitions 0/110 dead transitions. [2022-12-13 16:26:09,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 110 transitions, 527 flow [2022-12-13 16:26:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:26:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 16:26:09,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2624 transitions. [2022-12-13 16:26:09,145 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44550084889643465 [2022-12-13 16:26:09,145 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2624 transitions. [2022-12-13 16:26:09,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2624 transitions. [2022-12-13 16:26:09,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:09,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2624 transitions. [2022-12-13 16:26:09,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 262.4) internal successors, (2624), 10 states have internal predecessors, (2624), 0 states have call successors, (0), 0 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 16:26:09,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 589.0) internal successors, (6479), 11 states have internal predecessors, (6479), 0 states have call successors, (0), 0 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 16:26:09,157 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 589.0) internal successors, (6479), 11 states have internal predecessors, (6479), 0 states have call successors, (0), 0 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 16:26:09,157 INFO L175 Difference]: Start difference. First operand has 42 places, 41 transitions, 140 flow. Second operand 10 states and 2624 transitions. [2022-12-13 16:26:09,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 110 transitions, 527 flow [2022-12-13 16:26:09,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 110 transitions, 499 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-12-13 16:26:09,160 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 218 flow [2022-12-13 16:26:09,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2022-12-13 16:26:09,161 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2022-12-13 16:26:09,161 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 218 flow [2022-12-13 16:26:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 254.9) internal successors, (2549), 10 states have internal predecessors, (2549), 0 states have call successors, (0), 0 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 16:26:09,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:09,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:09,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 16:26:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:09,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:09,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:09,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1062856531, now seen corresponding path program 2 times [2022-12-13 16:26:09,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:09,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769225698] [2022-12-13 16:26:09,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:26:09,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:09,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:09,372 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:09,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 16:26:09,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:26:09,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:09,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:09,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:26:09,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:26:10,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:10,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:10,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769225698] [2022-12-13 16:26:10,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769225698] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:26:10,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:26:10,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2022-12-13 16:26:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017329252] [2022-12-13 16:26:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:10,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:26:10,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:26:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:26:10,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2022-12-13 16:26:10,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 16:26:10,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:10,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2022-12-13 16:26:10,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:11,040 INFO L130 PetriNetUnfolder]: 1253/2076 cut-off events. [2022-12-13 16:26:11,040 INFO L131 PetriNetUnfolder]: For 1568/1624 co-relation queries the response was YES. [2022-12-13 16:26:11,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5604 conditions, 2076 events. 1253/2076 cut-off events. For 1568/1624 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11068 event pairs, 246 based on Foata normal form. 58/2128 useless extension candidates. Maximal degree in co-relation 5553. Up to 532 conditions per place. [2022-12-13 16:26:11,050 INFO L137 encePairwiseOnDemand]: 580/589 looper letters, 97 selfloop transitions, 23 changer transitions 15/139 dead transitions. [2022-12-13 16:26:11,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 139 transitions, 831 flow [2022-12-13 16:26:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 16:26:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-13 16:26:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2134 transitions. [2022-12-13 16:26:11,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45288624787775894 [2022-12-13 16:26:11,054 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2134 transitions. [2022-12-13 16:26:11,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2134 transitions. [2022-12-13 16:26:11,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:11,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2134 transitions. [2022-12-13 16:26:11,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 266.75) internal successors, (2134), 8 states have internal predecessors, (2134), 0 states have call successors, (0), 0 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 16:26:11,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 589.0) internal successors, (5301), 9 states have internal predecessors, (5301), 0 states have call successors, (0), 0 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 16:26:11,061 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 589.0) internal successors, (5301), 9 states have internal predecessors, (5301), 0 states have call successors, (0), 0 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 16:26:11,062 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 218 flow. Second operand 8 states and 2134 transitions. [2022-12-13 16:26:11,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 139 transitions, 831 flow [2022-12-13 16:26:11,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 139 transitions, 812 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 16:26:11,066 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 374 flow [2022-12-13 16:26:11,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2022-12-13 16:26:11,067 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2022-12-13 16:26:11,067 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 374 flow [2022-12-13 16:26:11,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 16:26:11,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:11,067 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:11,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-13 16:26:11,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:11,269 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:11,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:11,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2136175087, now seen corresponding path program 3 times [2022-12-13 16:26:11,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:11,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478909507] [2022-12-13 16:26:11,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 16:26:11,271 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:11,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:11,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:11,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 16:26:11,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 16:26:11,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:11,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:11,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:26:12,135 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:12,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:12,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478909507] [2022-12-13 16:26:12,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478909507] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:26:12,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:26:12,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2022-12-13 16:26:12,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062711363] [2022-12-13 16:26:12,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:12,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:26:12,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:12,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:26:12,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2022-12-13 16:26:12,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 589 [2022-12-13 16:26:12,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 374 flow. Second operand has 8 states, 8 states have (on average 253.625) internal successors, (2029), 8 states have internal predecessors, (2029), 0 states have call successors, (0), 0 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 16:26:12,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:12,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 589 [2022-12-13 16:26:12,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:14,313 INFO L130 PetriNetUnfolder]: 2572/4154 cut-off events. [2022-12-13 16:26:14,313 INFO L131 PetriNetUnfolder]: For 9460/9460 co-relation queries the response was YES. [2022-12-13 16:26:14,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14856 conditions, 4154 events. 2572/4154 cut-off events. For 9460/9460 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23996 event pairs, 308 based on Foata normal form. 1/4151 useless extension candidates. Maximal degree in co-relation 14816. Up to 1312 conditions per place. [2022-12-13 16:26:14,340 INFO L137 encePairwiseOnDemand]: 575/589 looper letters, 144 selfloop transitions, 123 changer transitions 7/277 dead transitions. [2022-12-13 16:26:14,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 277 transitions, 2141 flow [2022-12-13 16:26:14,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 16:26:14,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 16:26:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3404 transitions. [2022-12-13 16:26:14,349 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444560532845762 [2022-12-13 16:26:14,349 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3404 transitions. [2022-12-13 16:26:14,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3404 transitions. [2022-12-13 16:26:14,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:14,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3404 transitions. [2022-12-13 16:26:14,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 261.84615384615387) internal successors, (3404), 13 states have internal predecessors, (3404), 0 states have call successors, (0), 0 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 16:26:14,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 589.0) internal successors, (8246), 14 states have internal predecessors, (8246), 0 states have call successors, (0), 0 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 16:26:14,368 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 589.0) internal successors, (8246), 14 states have internal predecessors, (8246), 0 states have call successors, (0), 0 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 16:26:14,369 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 374 flow. Second operand 13 states and 3404 transitions. [2022-12-13 16:26:14,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 277 transitions, 2141 flow [2022-12-13 16:26:14,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 277 transitions, 2113 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-12-13 16:26:14,401 INFO L231 Difference]: Finished difference. Result has 81 places, 181 transitions, 1653 flow [2022-12-13 16:26:14,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1653, PETRI_PLACES=81, PETRI_TRANSITIONS=181} [2022-12-13 16:26:14,402 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 42 predicate places. [2022-12-13 16:26:14,402 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 181 transitions, 1653 flow [2022-12-13 16:26:14,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 253.625) internal successors, (2029), 8 states have internal predecessors, (2029), 0 states have call successors, (0), 0 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 16:26:14,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:14,403 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:14,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 16:26:14,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:14,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:14,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:14,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2000257603, now seen corresponding path program 4 times [2022-12-13 16:26:14,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:14,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352006326] [2022-12-13 16:26:14,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:26:14,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:14,610 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:14,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 16:26:14,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:26:14,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:14,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:14,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:15,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:26:15,118 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:15,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352006326] [2022-12-13 16:26:15,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352006326] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:15,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:15,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 16:26:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304774631] [2022-12-13 16:26:15,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:15,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 16:26:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:15,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 16:26:15,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:26:15,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 589 [2022-12-13 16:26:15,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 181 transitions, 1653 flow. Second operand has 10 states, 10 states have (on average 253.9) internal successors, (2539), 10 states have internal predecessors, (2539), 0 states have call successors, (0), 0 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 16:26:15,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:15,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 589 [2022-12-13 16:26:15,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:16,755 INFO L130 PetriNetUnfolder]: 2951/4785 cut-off events. [2022-12-13 16:26:16,755 INFO L131 PetriNetUnfolder]: For 26565/26619 co-relation queries the response was YES. [2022-12-13 16:26:16,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23336 conditions, 4785 events. 2951/4785 cut-off events. For 26565/26619 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 28417 event pairs, 621 based on Foata normal form. 18/4763 useless extension candidates. Maximal degree in co-relation 23285. Up to 2018 conditions per place. [2022-12-13 16:26:16,784 INFO L137 encePairwiseOnDemand]: 577/589 looper letters, 256 selfloop transitions, 75 changer transitions 0/334 dead transitions. [2022-12-13 16:26:16,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 334 transitions, 3682 flow [2022-12-13 16:26:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 16:26:16,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 16:26:16,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2614 transitions. [2022-12-13 16:26:16,788 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4438030560271647 [2022-12-13 16:26:16,788 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2614 transitions. [2022-12-13 16:26:16,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2614 transitions. [2022-12-13 16:26:16,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:16,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2614 transitions. [2022-12-13 16:26:16,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 261.4) internal successors, (2614), 10 states have internal predecessors, (2614), 0 states have call successors, (0), 0 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 16:26:16,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 589.0) internal successors, (6479), 11 states have internal predecessors, (6479), 0 states have call successors, (0), 0 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 16:26:16,796 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 589.0) internal successors, (6479), 11 states have internal predecessors, (6479), 0 states have call successors, (0), 0 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 16:26:16,796 INFO L175 Difference]: Start difference. First operand has 81 places, 181 transitions, 1653 flow. Second operand 10 states and 2614 transitions. [2022-12-13 16:26:16,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 334 transitions, 3682 flow [2022-12-13 16:26:16,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 334 transitions, 3612 flow, removed 35 selfloop flow, removed 1 redundant places. [2022-12-13 16:26:16,864 INFO L231 Difference]: Finished difference. Result has 94 places, 230 transitions, 2452 flow [2022-12-13 16:26:16,864 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=1625, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2452, PETRI_PLACES=94, PETRI_TRANSITIONS=230} [2022-12-13 16:26:16,865 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2022-12-13 16:26:16,865 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 230 transitions, 2452 flow [2022-12-13 16:26:16,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 253.9) internal successors, (2539), 10 states have internal predecessors, (2539), 0 states have call successors, (0), 0 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 16:26:16,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:16,866 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:16,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 16:26:17,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:17,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:17,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1214540961, now seen corresponding path program 5 times [2022-12-13 16:26:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:17,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515727649] [2022-12-13 16:26:17,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 16:26:17,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:17,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:17,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:17,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 16:26:17,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 16:26:17,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:17,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 16:26:17,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:26:17,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:26:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:17,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:17,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515727649] [2022-12-13 16:26:17,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515727649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:26:17,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:26:17,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-12-13 16:26:17,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572785739] [2022-12-13 16:26:17,926 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:26:17,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:26:17,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:17,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:26:17,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:26:19,688 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 589 [2022-12-13 16:26:19,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 230 transitions, 2452 flow. Second operand has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 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 16:26:19,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:19,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 589 [2022-12-13 16:26:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:25,461 INFO L130 PetriNetUnfolder]: 7043/11568 cut-off events. [2022-12-13 16:26:25,462 INFO L131 PetriNetUnfolder]: For 81040/81074 co-relation queries the response was YES. [2022-12-13 16:26:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59975 conditions, 11568 events. 7043/11568 cut-off events. For 81040/81074 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 79297 event pairs, 529 based on Foata normal form. 389/11951 useless extension candidates. Maximal degree in co-relation 58107. Up to 2149 conditions per place. [2022-12-13 16:26:25,524 INFO L137 encePairwiseOnDemand]: 568/589 looper letters, 557 selfloop transitions, 572 changer transitions 0/1132 dead transitions. [2022-12-13 16:26:25,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 1132 transitions, 13256 flow [2022-12-13 16:26:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 16:26:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-12-13 16:26:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11313 transitions. [2022-12-13 16:26:25,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4001485568760611 [2022-12-13 16:26:25,537 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11313 transitions. [2022-12-13 16:26:25,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11313 transitions. [2022-12-13 16:26:25,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:25,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11313 transitions. [2022-12-13 16:26:25,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 235.6875) internal successors, (11313), 48 states have internal predecessors, (11313), 0 states have call successors, (0), 0 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 16:26:25,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 589.0) internal successors, (28861), 49 states have internal predecessors, (28861), 0 states have call successors, (0), 0 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 16:26:25,571 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 589.0) internal successors, (28861), 49 states have internal predecessors, (28861), 0 states have call successors, (0), 0 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 16:26:25,572 INFO L175 Difference]: Start difference. First operand has 94 places, 230 transitions, 2452 flow. Second operand 48 states and 11313 transitions. [2022-12-13 16:26:25,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 1132 transitions, 13256 flow [2022-12-13 16:26:25,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 1132 transitions, 13127 flow, removed 62 selfloop flow, removed 2 redundant places. [2022-12-13 16:26:25,915 INFO L231 Difference]: Finished difference. Result has 170 places, 749 transitions, 10765 flow [2022-12-13 16:26:25,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10765, PETRI_PLACES=170, PETRI_TRANSITIONS=749} [2022-12-13 16:26:25,915 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2022-12-13 16:26:25,915 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 749 transitions, 10765 flow [2022-12-13 16:26:25,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 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 16:26:25,916 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:25,916 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:25,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 16:26:26,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:26,117 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:26,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:26,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1822676455, now seen corresponding path program 6 times [2022-12-13 16:26:26,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:26,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1018706822] [2022-12-13 16:26:26,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 16:26:26,118 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:26,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:26,119 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:26,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 16:26:26,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-13 16:26:26,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:26,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:26,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:26,615 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 16:26:26,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:26:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:26,755 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1018706822] [2022-12-13 16:26:26,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1018706822] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 16:26:26,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 16:26:26,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 13 [2022-12-13 16:26:26,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284758556] [2022-12-13 16:26:26,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:26,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 16:26:26,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:26,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 16:26:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-12-13 16:26:26,944 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 589 [2022-12-13 16:26:26,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 749 transitions, 10765 flow. Second operand has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 16:26:26,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:26,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 589 [2022-12-13 16:26:26,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:30,141 INFO L130 PetriNetUnfolder]: 7408/12144 cut-off events. [2022-12-13 16:26:30,142 INFO L131 PetriNetUnfolder]: For 200774/201229 co-relation queries the response was YES. [2022-12-13 16:26:30,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82769 conditions, 12144 events. 7408/12144 cut-off events. For 200774/201229 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 84001 event pairs, 926 based on Foata normal form. 204/12281 useless extension candidates. Maximal degree in co-relation 81681. Up to 3354 conditions per place. [2022-12-13 16:26:30,268 INFO L137 encePairwiseOnDemand]: 580/589 looper letters, 484 selfloop transitions, 353 changer transitions 32/920 dead transitions. [2022-12-13 16:26:30,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 920 transitions, 14683 flow [2022-12-13 16:26:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 16:26:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 16:26:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1877 transitions. [2022-12-13 16:26:30,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4552510308028135 [2022-12-13 16:26:30,273 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1877 transitions. [2022-12-13 16:26:30,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1877 transitions. [2022-12-13 16:26:30,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:30,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1877 transitions. [2022-12-13 16:26:30,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.14285714285717) internal successors, (1877), 7 states have internal predecessors, (1877), 0 states have call successors, (0), 0 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 16:26:30,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 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 16:26:30,280 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 589.0) internal successors, (4712), 8 states have internal predecessors, (4712), 0 states have call successors, (0), 0 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 16:26:30,280 INFO L175 Difference]: Start difference. First operand has 170 places, 749 transitions, 10765 flow. Second operand 7 states and 1877 transitions. [2022-12-13 16:26:30,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 920 transitions, 14683 flow [2022-12-13 16:26:31,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 920 transitions, 14166 flow, removed 250 selfloop flow, removed 2 redundant places. [2022-12-13 16:26:31,436 INFO L231 Difference]: Finished difference. Result has 178 places, 794 transitions, 12105 flow [2022-12-13 16:26:31,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=10302, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12105, PETRI_PLACES=178, PETRI_TRANSITIONS=794} [2022-12-13 16:26:31,437 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 139 predicate places. [2022-12-13 16:26:31,437 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 794 transitions, 12105 flow [2022-12-13 16:26:31,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.6666666666667) internal successors, (1552), 6 states have internal predecessors, (1552), 0 states have call successors, (0), 0 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 16:26:31,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:31,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:31,446 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 16:26:31,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:31,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:31,640 INFO L85 PathProgramCache]: Analyzing trace with hash -799196271, now seen corresponding path program 7 times [2022-12-13 16:26:31,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:31,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193639721] [2022-12-13 16:26:31,642 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 16:26:31,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:31,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:31,645 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:31,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 16:26:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 16:26:31,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 16:26:31,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:32,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:26:32,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 16:26:32,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:32,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193639721] [2022-12-13 16:26:32,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193639721] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:26:32,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:26:32,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2022-12-13 16:26:32,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685423655] [2022-12-13 16:26:32,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:26:32,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 16:26:32,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 16:26:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-12-13 16:26:33,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 589 [2022-12-13 16:26:33,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 794 transitions, 12105 flow. Second operand has 18 states, 18 states have (on average 253.0) internal successors, (4554), 18 states have internal predecessors, (4554), 0 states have call successors, (0), 0 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 16:26:33,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:33,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 589 [2022-12-13 16:26:33,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 16:26:43,339 INFO L130 PetriNetUnfolder]: 15116/24467 cut-off events. [2022-12-13 16:26:43,339 INFO L131 PetriNetUnfolder]: For 445433/445457 co-relation queries the response was YES. [2022-12-13 16:26:43,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171940 conditions, 24467 events. 15116/24467 cut-off events. For 445433/445457 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 176885 event pairs, 401 based on Foata normal form. 112/24579 useless extension candidates. Maximal degree in co-relation 171737. Up to 4701 conditions per place. [2022-12-13 16:26:43,570 INFO L137 encePairwiseOnDemand]: 573/589 looper letters, 730 selfloop transitions, 1764 changer transitions 0/2497 dead transitions. [2022-12-13 16:26:43,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 2497 transitions, 42796 flow [2022-12-13 16:26:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-13 16:26:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-13 16:26:43,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 14304 transitions. [2022-12-13 16:26:43,582 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44154962185522456 [2022-12-13 16:26:43,582 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 14304 transitions. [2022-12-13 16:26:43,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 14304 transitions. [2022-12-13 16:26:43,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 16:26:43,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 14304 transitions. [2022-12-13 16:26:43,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 260.07272727272726) internal successors, (14304), 55 states have internal predecessors, (14304), 0 states have call successors, (0), 0 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 16:26:43,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 589.0) internal successors, (32984), 56 states have internal predecessors, (32984), 0 states have call successors, (0), 0 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 16:26:43,614 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 589.0) internal successors, (32984), 56 states have internal predecessors, (32984), 0 states have call successors, (0), 0 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 16:26:43,614 INFO L175 Difference]: Start difference. First operand has 178 places, 794 transitions, 12105 flow. Second operand 55 states and 14304 transitions. [2022-12-13 16:26:43,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 2497 transitions, 42796 flow [2022-12-13 16:26:47,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 2497 transitions, 41996 flow, removed 214 selfloop flow, removed 2 redundant places. [2022-12-13 16:26:47,129 INFO L231 Difference]: Finished difference. Result has 277 places, 2039 transitions, 39325 flow [2022-12-13 16:26:47,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=589, PETRI_DIFFERENCE_MINUEND_FLOW=11896, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=39325, PETRI_PLACES=277, PETRI_TRANSITIONS=2039} [2022-12-13 16:26:47,130 INFO L288 CegarLoopForPetriNet]: 39 programPoint places, 238 predicate places. [2022-12-13 16:26:47,130 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 2039 transitions, 39325 flow [2022-12-13 16:26:47,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 253.0) internal successors, (4554), 18 states have internal predecessors, (4554), 0 states have call successors, (0), 0 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 16:26:47,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 16:26:47,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:26:47,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-13 16:26:47,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:47,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-13 16:26:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:26:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash -4541769, now seen corresponding path program 8 times [2022-12-13 16:26:47,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 16:26:47,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824100873] [2022-12-13 16:26:47,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 16:26:47,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 16:26:47,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 16:26:47,338 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 16:26:47,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9f28ac6-9bb3-4edf-8722-2c6275165b26/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 16:26:47,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 16:26:47,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:26:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:26:47,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:26:47,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 16:26:47,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 16:26:47,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 16:26:47,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824100873] [2022-12-13 16:26:47,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824100873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 16:26:47,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 16:26:47,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 16:26:47,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850206530] [2022-12-13 16:26:47,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 16:26:47,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 16:26:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 16:26:47,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 16:26:47,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-13 16:26:47,814 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 589 [2022-12-13 16:26:47,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 2039 transitions, 39325 flow. Second operand has 8 states, 8 states have (on average 259.5) internal successors, (2076), 8 states have internal predecessors, (2076), 0 states have call successors, (0), 0 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 16:26:47,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 16:26:47,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 589 [2022-12-13 16:26:47,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand