./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:16:53,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:16:53,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:16:53,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:16:53,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:16:53,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:16:53,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:16:53,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:16:53,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:16:53,438 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:16:53,439 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:16:53,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:16:53,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:16:53,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:16:53,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:16:53,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:16:53,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:16:53,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:16:53,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:16:53,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:16:53,472 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:16:53,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:16:53,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:16:53,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:16:53,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:16:53,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:16:53,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:16:53,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:16:53,496 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:16:53,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:16:53,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:16:53,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:16:53,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:16:53,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:16:53,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:16:53,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:16:53,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:16:53,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:16:53,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:16:53,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:16:53,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:16:53,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:16:53,561 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:16:53,561 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:16:53,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:16:53,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:16:53,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:16:53,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:16:53,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:16:53,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:16:53,566 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:16:53,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:16:53,567 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:16:53,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:16:53,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:16:53,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:16:53,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:16:53,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:16:53,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:16:53,569 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:16:53,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:16:53,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:16:53,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:16:53,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:16:53,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:16:53,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:16:53,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:53,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:16:53,574 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:16:53,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:16:53,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:16:53,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:16:53,576 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:16:53,576 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:16:53,576 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:16:53,577 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-10-17 10:16:53,877 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:16:53,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:16:53,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:16:53,916 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:16:53,916 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:16:53,918 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-10-17 10:16:53,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/data/0f257a346/35a33c2fbedd44519a121edf1029a8d1/FLAG098332bbf [2022-10-17 10:16:54,605 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:16:54,607 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-10-17 10:16:54,617 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/data/0f257a346/35a33c2fbedd44519a121edf1029a8d1/FLAG098332bbf [2022-10-17 10:16:54,923 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/data/0f257a346/35a33c2fbedd44519a121edf1029a8d1 [2022-10-17 10:16:54,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:16:54,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:16:54,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:54,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:16:54,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:16:54,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:54" (1/1) ... [2022-10-17 10:16:54,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cb216c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:54, skipping insertion in model container [2022-10-17 10:16:54,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:54" (1/1) ... [2022-10-17 10:16:54,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:16:54,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:55,224 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-10-17 10:16:55,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:55,243 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:55,277 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-10-17 10:16:55,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:55,300 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:55,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55 WrapperNode [2022-10-17 10:16:55,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:55,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:55,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:55,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:55,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,322 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,359 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2022-10-17 10:16:55,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:55,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:55,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:55,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:55,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:55,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:55,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:55,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:55,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (1/1) ... [2022-10-17 10:16:55,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:55,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:55,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:55,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39962dec-0e69-4ff6-94cd-7f762aa90558/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:55,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:16:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:16:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:16:55,546 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-10-17 10:16:55,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-10-17 10:16:55,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-10-17 10:16:55,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-10-17 10:16:55,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-10-17 10:16:55,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-10-17 10:16:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:55,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:16:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:16:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:16:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:55,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:55,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:16:55,554 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:16:55,715 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:55,718 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:56,351 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:56,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:56,588 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-10-17 10:16:56,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:56 BoogieIcfgContainer [2022-10-17 10:16:56,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:56,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:56,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:56,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:56,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:16:54" (1/3) ... [2022-10-17 10:16:56,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:56, skipping insertion in model container [2022-10-17 10:16:56,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:55" (2/3) ... [2022-10-17 10:16:56,603 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b82c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:56, skipping insertion in model container [2022-10-17 10:16:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:56" (3/3) ... [2022-10-17 10:16:56,606 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-10-17 10:16:56,623 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:16:56,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:56,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:16:56,636 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:16:56,751 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-10-17 10:16:56,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 223 transitions, 470 flow [2022-10-17 10:16:56,912 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-10-17 10:16:56,913 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:16:56,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 18/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2022-10-17 10:16:56,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 223 transitions, 470 flow [2022-10-17 10:16:56,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 209 transitions, 436 flow [2022-10-17 10:16:56,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:56,945 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;@277c3ec0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:56,945 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-17 10:16:57,027 INFO L130 PetriNetUnfolder]: 18/208 cut-off events. [2022-10-17 10:16:57,027 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-10-17 10:16:57,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:57,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:57,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:57,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1187189117, now seen corresponding path program 1 times [2022-10-17 10:16:57,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945444230] [2022-10-17 10:16:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:57,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:57,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:57,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945444230] [2022-10-17 10:16:57,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945444230] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:57,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:57,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:16:57,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27658900] [2022-10-17 10:16:57,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:16:57,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:57,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:16:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:57,504 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 223 [2022-10-17 10:16:57,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 209 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:57,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 223 [2022-10-17 10:16:57,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:57,771 INFO L130 PetriNetUnfolder]: 71/400 cut-off events. [2022-10-17 10:16:57,772 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-10-17 10:16:57,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 400 events. 71/400 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1174 event pairs, 38 based on Foata normal form. 60/419 useless extension candidates. Maximal degree in co-relation 353. Up to 106 conditions per place. [2022-10-17 10:16:57,782 INFO L137 encePairwiseOnDemand]: 210/223 looper letters, 11 selfloop transitions, 0 changer transitions 6/196 dead transitions. [2022-10-17 10:16:57,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 432 flow [2022-10-17 10:16:57,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:16:57,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-10-17 10:16:57,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2022-10-17 10:16:57,809 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9417040358744395 [2022-10-17 10:16:57,810 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 420 transitions. [2022-10-17 10:16:57,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 420 transitions. [2022-10-17 10:16:57,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:57,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 420 transitions. [2022-10-17 10:16:57,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,835 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,837 INFO L175 Difference]: Start difference. First operand has 201 places, 209 transitions, 436 flow. Second operand 2 states and 420 transitions. [2022-10-17 10:16:57,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 432 flow [2022-10-17 10:16:57,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 420 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-10-17 10:16:57,857 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 386 flow [2022-10-17 10:16:57,860 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=386, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2022-10-17 10:16:57,865 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -5 predicate places. [2022-10-17 10:16:57,865 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 386 flow [2022-10-17 10:16:57,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:57,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:57,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:57,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:57,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:57,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:57,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015543, now seen corresponding path program 1 times [2022-10-17 10:16:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:57,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722278045] [2022-10-17 10:16:57,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:57,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:58,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:58,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:58,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722278045] [2022-10-17 10:16:58,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722278045] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:58,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:58,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:58,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711552183] [2022-10-17 10:16:58,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:58,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:58,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-10-17 10:16:58,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:58,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:58,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-10-17 10:16:58,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:59,096 INFO L130 PetriNetUnfolder]: 73/481 cut-off events. [2022-10-17 10:16:59,097 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-10-17 10:16:59,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 481 events. 73/481 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1463 event pairs, 38 based on Foata normal form. 11/453 useless extension candidates. Maximal degree in co-relation 649. Up to 118 conditions per place. [2022-10-17 10:16:59,103 INFO L137 encePairwiseOnDemand]: 211/223 looper letters, 33 selfloop transitions, 8 changer transitions 17/211 dead transitions. [2022-10-17 10:16:59,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 547 flow [2022-10-17 10:16:59,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:16:59,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:16:59,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1609 transitions. [2022-10-17 10:16:59,113 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8016940707523668 [2022-10-17 10:16:59,114 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1609 transitions. [2022-10-17 10:16:59,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1609 transitions. [2022-10-17 10:16:59,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:59,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1609 transitions. [2022-10-17 10:16:59,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.77777777777777) internal successors, (1609), 9 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,136 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 386 flow. Second operand 9 states and 1609 transitions. [2022-10-17 10:16:59,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 211 transitions, 547 flow [2022-10-17 10:16:59,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-10-17 10:16:59,149 INFO L231 Difference]: Finished difference. Result has 200 places, 191 transitions, 418 flow [2022-10-17 10:16:59,150 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=200, PETRI_TRANSITIONS=191} [2022-10-17 10:16:59,151 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-10-17 10:16:59,152 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 191 transitions, 418 flow [2022-10-17 10:16:59,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:59,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:59,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:59,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:59,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1559305920, now seen corresponding path program 1 times [2022-10-17 10:16:59,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:59,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896606614] [2022-10-17 10:16:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:59,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:16:59,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:59,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896606614] [2022-10-17 10:16:59,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896606614] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:59,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:59,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:59,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861136588] [2022-10-17 10:16:59,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:59,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:59,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:59,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:59,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:59,630 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-10-17 10:16:59,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 191 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:16:59,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-10-17 10:16:59,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:16:59,920 INFO L130 PetriNetUnfolder]: 92/516 cut-off events. [2022-10-17 10:16:59,920 INFO L131 PetriNetUnfolder]: For 87/111 co-relation queries the response was YES. [2022-10-17 10:16:59,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 516 events. 92/516 cut-off events. For 87/111 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1808 event pairs, 50 based on Foata normal form. 13/481 useless extension candidates. Maximal degree in co-relation 812. Up to 115 conditions per place. [2022-10-17 10:16:59,927 INFO L137 encePairwiseOnDemand]: 214/223 looper letters, 36 selfloop transitions, 6 changer transitions 8/203 dead transitions. [2022-10-17 10:16:59,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 203 transitions, 552 flow [2022-10-17 10:16:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:16:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-10-17 10:16:59,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2022-10-17 10:16:59,936 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8039718129404229 [2022-10-17 10:16:59,936 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2022-10-17 10:16:59,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2022-10-17 10:16:59,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:16:59,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2022-10-17 10:16:59,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,951 INFO L175 Difference]: Start difference. First operand has 200 places, 191 transitions, 418 flow. Second operand 7 states and 1255 transitions. [2022-10-17 10:16:59,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 203 transitions, 552 flow [2022-10-17 10:16:59,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-10-17 10:16:59,962 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 428 flow [2022-10-17 10:16:59,963 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2022-10-17 10:16:59,967 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 0 predicate places. [2022-10-17 10:16:59,967 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 428 flow [2022-10-17 10:16:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:16:59,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:16:59,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:59,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:59,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:16:59,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash 840252989, now seen corresponding path program 1 times [2022-10-17 10:16:59,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:59,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795681411] [2022-10-17 10:16:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:00,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:00,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:00,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795681411] [2022-10-17 10:17:00,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795681411] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:00,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:00,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:17:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950144886] [2022-10-17 10:17:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:17:00,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:00,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:17:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:17:00,486 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 223 [2022-10-17 10:17:00,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:00,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:00,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 223 [2022-10-17 10:17:00,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:00,643 INFO L130 PetriNetUnfolder]: 79/421 cut-off events. [2022-10-17 10:17:00,644 INFO L131 PetriNetUnfolder]: For 86/96 co-relation queries the response was YES. [2022-10-17 10:17:00,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 421 events. 79/421 cut-off events. For 86/96 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1204 event pairs, 23 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 657. Up to 79 conditions per place. [2022-10-17 10:17:00,649 INFO L137 encePairwiseOnDemand]: 218/223 looper letters, 20 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2022-10-17 10:17:00,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 498 flow [2022-10-17 10:17:00,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:17:00,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:17:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-10-17 10:17:00,652 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8938714499252616 [2022-10-17 10:17:00,652 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-10-17 10:17:00,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-10-17 10:17:00,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:00,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-10-17 10:17:00,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:00,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:00,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:00,659 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 428 flow. Second operand 3 states and 598 transitions. [2022-10-17 10:17:00,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 498 flow [2022-10-17 10:17:00,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:17:00,666 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 438 flow [2022-10-17 10:17:00,667 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-10-17 10:17:00,668 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -2 predicate places. [2022-10-17 10:17:00,669 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 438 flow [2022-10-17 10:17:00,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:00,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:00,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:00,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:17:00,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:00,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:00,671 INFO L85 PathProgramCache]: Analyzing trace with hash 183471921, now seen corresponding path program 2 times [2022-10-17 10:17:00,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:00,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928373649] [2022-10-17 10:17:00,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:00,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:00,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:01,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:01,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:01,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928373649] [2022-10-17 10:17:01,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928373649] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:01,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:01,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:17:01,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820181123] [2022-10-17 10:17:01,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:01,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:17:01,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:01,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:17:01,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:17:01,064 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 223 [2022-10-17 10:17:01,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:01,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 223 [2022-10-17 10:17:01,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:01,193 INFO L130 PetriNetUnfolder]: 58/373 cut-off events. [2022-10-17 10:17:01,193 INFO L131 PetriNetUnfolder]: For 91/105 co-relation queries the response was YES. [2022-10-17 10:17:01,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 373 events. 58/373 cut-off events. For 91/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 885 event pairs, 9 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 593. Up to 91 conditions per place. [2022-10-17 10:17:01,198 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 17 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-10-17 10:17:01,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 492 flow [2022-10-17 10:17:01,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:17:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:17:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-10-17 10:17:01,202 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8998505231689088 [2022-10-17 10:17:01,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-10-17 10:17:01,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-10-17 10:17:01,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:01,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-10-17 10:17:01,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,210 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 438 flow. Second operand 3 states and 602 transitions. [2022-10-17 10:17:01,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 492 flow [2022-10-17 10:17:01,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 197 transitions, 482 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-10-17 10:17:01,219 INFO L231 Difference]: Finished difference. Result has 200 places, 195 transitions, 451 flow [2022-10-17 10:17:01,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-10-17 10:17:01,221 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-10-17 10:17:01,221 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 451 flow [2022-10-17 10:17:01,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:01,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:01,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:01,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:17:01,223 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash -2134133453, now seen corresponding path program 3 times [2022-10-17 10:17:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:01,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135956494] [2022-10-17 10:17:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:03,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:03,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135956494] [2022-10-17 10:17:03,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135956494] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:03,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:03,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 10:17:03,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544538010] [2022-10-17 10:17:03,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:17:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:17:03,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:17:03,915 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-10-17 10:17:03,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 451 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:03,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:03,920 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-10-17 10:17:03,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:05,568 INFO L130 PetriNetUnfolder]: 865/2144 cut-off events. [2022-10-17 10:17:05,569 INFO L131 PetriNetUnfolder]: For 745/769 co-relation queries the response was YES. [2022-10-17 10:17:05,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 2144 events. 865/2144 cut-off events. For 745/769 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14619 event pairs, 163 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 4298. Up to 974 conditions per place. [2022-10-17 10:17:05,593 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 122 selfloop transitions, 39 changer transitions 5/301 dead transitions. [2022-10-17 10:17:05,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 301 transitions, 1098 flow [2022-10-17 10:17:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:17:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-10-17 10:17:05,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-10-17 10:17:05,606 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-10-17 10:17:05,607 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-10-17 10:17:05,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-10-17 10:17:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:05,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-10-17 10:17:05,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:05,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:05,637 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:05,638 INFO L175 Difference]: Start difference. First operand has 200 places, 195 transitions, 451 flow. Second operand 20 states and 3086 transitions. [2022-10-17 10:17:05,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 301 transitions, 1098 flow [2022-10-17 10:17:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 301 transitions, 1088 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-10-17 10:17:05,652 INFO L231 Difference]: Finished difference. Result has 228 places, 230 transitions, 663 flow [2022-10-17 10:17:05,653 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=663, PETRI_PLACES=228, PETRI_TRANSITIONS=230} [2022-10-17 10:17:05,655 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 27 predicate places. [2022-10-17 10:17:05,656 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 230 transitions, 663 flow [2022-10-17 10:17:05,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:05,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:05,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:05,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:17:05,659 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:05,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:05,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1705051047, now seen corresponding path program 4 times [2022-10-17 10:17:05,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:05,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894461068] [2022-10-17 10:17:05,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:05,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:07,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:07,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894461068] [2022-10-17 10:17:07,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894461068] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:07,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:07,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 10:17:07,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455054399] [2022-10-17 10:17:07,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:07,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:17:07,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:17:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:17:07,792 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-10-17 10:17:07,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 230 transitions, 663 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:07,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:07,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-10-17 10:17:07,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:09,199 INFO L130 PetriNetUnfolder]: 933/2203 cut-off events. [2022-10-17 10:17:09,200 INFO L131 PetriNetUnfolder]: For 1677/1687 co-relation queries the response was YES. [2022-10-17 10:17:09,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5506 conditions, 2203 events. 933/2203 cut-off events. For 1677/1687 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14448 event pairs, 402 based on Foata normal form. 1/2119 useless extension candidates. Maximal degree in co-relation 5487. Up to 1170 conditions per place. [2022-10-17 10:17:09,233 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 124 selfloop transitions, 46 changer transitions 5/310 dead transitions. [2022-10-17 10:17:09,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 310 transitions, 1371 flow [2022-10-17 10:17:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:17:09,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-10-17 10:17:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2782 transitions. [2022-10-17 10:17:09,246 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.693074240159442 [2022-10-17 10:17:09,247 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2782 transitions. [2022-10-17 10:17:09,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2782 transitions. [2022-10-17 10:17:09,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:09,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2782 transitions. [2022-10-17 10:17:09,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.55555555555554) internal successors, (2782), 18 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,277 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,277 INFO L175 Difference]: Start difference. First operand has 228 places, 230 transitions, 663 flow. Second operand 18 states and 2782 transitions. [2022-10-17 10:17:09,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 310 transitions, 1371 flow [2022-10-17 10:17:09,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 310 transitions, 1353 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-10-17 10:17:09,304 INFO L231 Difference]: Finished difference. Result has 246 places, 251 transitions, 932 flow [2022-10-17 10:17:09,305 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=932, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2022-10-17 10:17:09,306 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 45 predicate places. [2022-10-17 10:17:09,306 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 932 flow [2022-10-17 10:17:09,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:09,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:09,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:09,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:17:09,310 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:09,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash 225193089, now seen corresponding path program 5 times [2022-10-17 10:17:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:09,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760424767] [2022-10-17 10:17:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:11,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:11,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760424767] [2022-10-17 10:17:11,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760424767] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:11,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:11,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 10:17:11,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363503849] [2022-10-17 10:17:11,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:11,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:17:11,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:11,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:17:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:17:11,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-10-17 10:17:11,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 932 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:11,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:11,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-10-17 10:17:11,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:12,985 INFO L130 PetriNetUnfolder]: 978/2378 cut-off events. [2022-10-17 10:17:12,985 INFO L131 PetriNetUnfolder]: For 3549/3564 co-relation queries the response was YES. [2022-10-17 10:17:13,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 2378 events. 978/2378 cut-off events. For 3549/3564 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16406 event pairs, 277 based on Foata normal form. 5/2287 useless extension candidates. Maximal degree in co-relation 6657. Up to 1175 conditions per place. [2022-10-17 10:17:13,028 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 140 selfloop transitions, 49 changer transitions 5/329 dead transitions. [2022-10-17 10:17:13,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 329 transitions, 1759 flow [2022-10-17 10:17:13,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:17:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-10-17 10:17:13,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-10-17 10:17:13,042 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-10-17 10:17:13,043 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-10-17 10:17:13,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-10-17 10:17:13,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:13,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-10-17 10:17:13,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:13,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:13,151 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:13,160 INFO L175 Difference]: Start difference. First operand has 246 places, 251 transitions, 932 flow. Second operand 20 states and 3086 transitions. [2022-10-17 10:17:13,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 329 transitions, 1759 flow [2022-10-17 10:17:13,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 329 transitions, 1688 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-10-17 10:17:13,191 INFO L231 Difference]: Finished difference. Result has 260 places, 259 transitions, 1050 flow [2022-10-17 10:17:13,192 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1050, PETRI_PLACES=260, PETRI_TRANSITIONS=259} [2022-10-17 10:17:13,193 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 59 predicate places. [2022-10-17 10:17:13,193 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 259 transitions, 1050 flow [2022-10-17 10:17:13,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:13,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:13,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:13,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:17:13,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:13,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:13,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1356739333, now seen corresponding path program 6 times [2022-10-17 10:17:13,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:13,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756170580] [2022-10-17 10:17:13,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:13,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:15,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756170580] [2022-10-17 10:17:15,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756170580] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:15,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:15,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 10:17:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961590051] [2022-10-17 10:17:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:15,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:17:15,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:17:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:17:15,354 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-10-17 10:17:15,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 259 transitions, 1050 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:15,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:15,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-10-17 10:17:15,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:17:17,264 INFO L130 PetriNetUnfolder]: 1091/2642 cut-off events. [2022-10-17 10:17:17,265 INFO L131 PetriNetUnfolder]: For 5948/5960 co-relation queries the response was YES. [2022-10-17 10:17:17,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 2642 events. 1091/2642 cut-off events. For 5948/5960 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18805 event pairs, 437 based on Foata normal form. 4/2551 useless extension candidates. Maximal degree in co-relation 7929. Up to 1218 conditions per place. [2022-10-17 10:17:17,312 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 149 selfloop transitions, 55 changer transitions 5/344 dead transitions. [2022-10-17 10:17:17,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 344 transitions, 2010 flow [2022-10-17 10:17:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-10-17 10:17:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-10-17 10:17:17,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3091 transitions. [2022-10-17 10:17:17,328 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6930493273542601 [2022-10-17 10:17:17,328 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3091 transitions. [2022-10-17 10:17:17,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3091 transitions. [2022-10-17 10:17:17,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:17:17,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3091 transitions. [2022-10-17 10:17:17,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.55) internal successors, (3091), 20 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:17,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:17,356 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:17,356 INFO L175 Difference]: Start difference. First operand has 260 places, 259 transitions, 1050 flow. Second operand 20 states and 3091 transitions. [2022-10-17 10:17:17,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 344 transitions, 2010 flow [2022-10-17 10:17:17,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 344 transitions, 1882 flow, removed 28 selfloop flow, removed 14 redundant places. [2022-10-17 10:17:17,385 INFO L231 Difference]: Finished difference. Result has 269 places, 270 transitions, 1177 flow [2022-10-17 10:17:17,386 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1177, PETRI_PLACES=269, PETRI_TRANSITIONS=270} [2022-10-17 10:17:17,388 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 68 predicate places. [2022-10-17 10:17:17,388 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 270 transitions, 1177 flow [2022-10-17 10:17:17,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:17,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:17:17,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:17:17,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:17:17,390 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-10-17 10:17:17,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:17:17,391 INFO L85 PathProgramCache]: Analyzing trace with hash 129091073, now seen corresponding path program 7 times [2022-10-17 10:17:17,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:17:17,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429604219] [2022-10-17 10:17:17,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:17:17,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:17:17,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:17:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 10:17:19,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:17:19,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429604219] [2022-10-17 10:17:19,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429604219] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:17:19,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:17:19,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-10-17 10:17:19,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638658062] [2022-10-17 10:17:19,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:17:19,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:17:19,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:17:19,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:17:19,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:17:19,397 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-10-17 10:17:19,411 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 270 transitions, 1177 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:17:19,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:17:19,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-10-17 10:17:19,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand