./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8 --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 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b --- 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-e04fb08 [2022-11-16 12:00:24,263 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:00:24,266 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:00:24,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:00:24,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:00:24,319 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:00:24,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:00:24,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:00:24,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:00:24,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:00:24,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:00:24,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:00:24,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:00:24,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:00:24,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:00:24,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:00:24,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:00:24,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:00:24,351 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:00:24,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:00:24,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:00:24,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:00:24,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:00:24,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:00:24,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:00:24,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:00:24,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:00:24,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:00:24,383 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:00:24,385 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:00:24,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:00:24,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:00:24,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:00:24,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:00:24,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:00:24,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:00:24,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:00:24,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:00:24,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:00:24,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:00:24,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:00:24,399 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:00:24,449 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:00:24,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:00:24,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:00:24,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:00:24,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:00:24,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:00:24,453 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:00:24,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:00:24,454 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:00:24,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:00:24,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:00:24,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:00:24,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:00:24,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:00:24,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:00:24,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:00:24,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:00:24,458 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:00:24,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:00:24,458 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:00:24,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:00:24,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:00:24,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:00:24,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:00:24,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:24,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:00:24,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:00:24,462 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:00:24,462 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:00:24,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:00:24,463 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:00:24,463 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:00:24,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:00:24,464 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_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fab2e995569cc819974baee7d52d8d4bdabd2a2896c83fb3b8d07b44f394c5b [2022-11-16 12:00:24,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:00:24,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:00:24,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:00:24,895 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:00:24,896 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:00:24,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-16 12:00:24,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/data/dbd682f05/cc97ce80efb64e34b0eb1242577111a9/FLAG1ce191b77 [2022-11-16 12:00:25,631 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:00:25,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2022-11-16 12:00:25,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/data/dbd682f05/cc97ce80efb64e34b0eb1242577111a9/FLAG1ce191b77 [2022-11-16 12:00:25,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/data/dbd682f05/cc97ce80efb64e34b0eb1242577111a9 [2022-11-16 12:00:25,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:00:25,914 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:00:25,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:25,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:00:25,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:00:25,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:25" (1/1) ... [2022-11-16 12:00:25,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b218bad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:25, skipping insertion in model container [2022-11-16 12:00:25,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:00:25" (1/1) ... [2022-11-16 12:00:25,937 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:00:26,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:00:26,290 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:00:26,458 WARN L229 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_78de7cf0-0845-4432-ad04-87e033b2999f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-16 12:00:26,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:26,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:00:26,519 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 12:00:26,562 WARN L229 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_78de7cf0-0845-4432-ad04-87e033b2999f/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i[31246,31259] [2022-11-16 12:00:26,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:00:26,628 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:00:26,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26 WrapperNode [2022-11-16 12:00:26,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:00:26,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:26,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:00:26,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:00:26,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,719 INFO L138 Inliner]: procedures = 175, calls = 46, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 114 [2022-11-16 12:00:26,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:00:26,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:00:26,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:00:26,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:00:26,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,782 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:00:26,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:00:26,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:00:26,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:00:26,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (1/1) ... [2022-11-16 12:00:26,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:00:26,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:00:26,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:00:26,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:00:26,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:00:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:00:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:00:26,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:00:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-16 12:00:26,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-16 12:00:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:00:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:00:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:00:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:00:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:00:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:00:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-16 12:00:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-16 12:00:26,895 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:00:27,151 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:00:27,169 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:00:27,556 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:00:27,606 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:00:27,606 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:00:27,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:27 BoogieIcfgContainer [2022-11-16 12:00:27,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:00:27,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:00:27,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:00:27,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:00:27,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:00:25" (1/3) ... [2022-11-16 12:00:27,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485121b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:27, skipping insertion in model container [2022-11-16 12:00:27,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:00:26" (2/3) ... [2022-11-16 12:00:27,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485121b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:00:27, skipping insertion in model container [2022-11-16 12:00:27,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:27" (3/3) ... [2022-11-16 12:00:27,621 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2022-11-16 12:00:27,632 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:00:27,646 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:00:27,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:00:27,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:00:27,814 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-16 12:00:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 112 transitions, 256 flow [2022-11-16 12:00:27,979 INFO L130 PetriNetUnfolder]: 2/108 cut-off events. [2022-11-16 12:00:27,980 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-16 12:00:27,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 108 events. 2/108 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-11-16 12:00:27,990 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 112 transitions, 256 flow [2022-11-16 12:00:27,996 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 94 transitions, 209 flow [2022-11-16 12:00:28,018 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:00:28,031 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;@32674705, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:00:28,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-16 12:00:28,079 INFO L130 PetriNetUnfolder]: 1/56 cut-off events. [2022-11-16 12:00:28,079 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:00:28,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:28,081 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:28,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash 764683200, now seen corresponding path program 1 times [2022-11-16 12:00:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:28,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741737546] [2022-11-16 12:00:28,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:28,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:28,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:28,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741737546] [2022-11-16 12:00:28,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741737546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:28,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:28,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:28,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98025736] [2022-11-16 12:00:28,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:28,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:28,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:28,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:28,744 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-16 12:00:28,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 209 flow. Second operand has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:28,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:28,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-16 12:00:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:30,869 INFO L130 PetriNetUnfolder]: 3826/7989 cut-off events. [2022-11-16 12:00:30,869 INFO L131 PetriNetUnfolder]: For 1855/1855 co-relation queries the response was YES. [2022-11-16 12:00:30,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7989 events. 3826/7989 cut-off events. For 1855/1855 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 71062 event pairs, 1181 based on Foata normal form. 418/8051 useless extension candidates. Maximal degree in co-relation 13913. Up to 2013 conditions per place. [2022-11-16 12:00:30,944 INFO L137 encePairwiseOnDemand]: 101/112 looper letters, 109 selfloop transitions, 24 changer transitions 4/201 dead transitions. [2022-11-16 12:00:30,944 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 201 transitions, 769 flow [2022-11-16 12:00:30,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:30,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 961 transitions. [2022-11-16 12:00:30,968 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8580357142857142 [2022-11-16 12:00:30,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 961 transitions. [2022-11-16 12:00:30,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 961 transitions. [2022-11-16 12:00:30,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:30,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 961 transitions. [2022-11-16 12:00:30,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 96.1) internal successors, (961), 10 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:30,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:30,993 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:30,995 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 209 flow. Second operand 10 states and 961 transitions. [2022-11-16 12:00:30,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 201 transitions, 769 flow [2022-11-16 12:00:31,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 201 transitions, 713 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-16 12:00:31,030 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 367 flow [2022-11-16 12:00:31,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=367, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2022-11-16 12:00:31,036 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-11-16 12:00:31,037 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 367 flow [2022-11-16 12:00:31,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:31,038 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:31,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:00:31,040 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:31,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1416784543, now seen corresponding path program 1 times [2022-11-16 12:00:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:31,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863742780] [2022-11-16 12:00:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:31,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:31,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:31,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:31,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863742780] [2022-11-16 12:00:31,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863742780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:31,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:31,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345372908] [2022-11-16 12:00:31,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:00:31,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:00:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:00:31,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 112 [2022-11-16 12:00:31,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:31,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 112 [2022-11-16 12:00:31,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:31,635 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [60#L748-4true, 44#writerENTRYtrue, 102#L740true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 71#L740true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-16 12:00:31,636 INFO L383 tUnfolder$Statistics]: this new event has 64 ancestors and is cut-off event [2022-11-16 12:00:31,636 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-16 12:00:31,636 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-16 12:00:31,637 INFO L386 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-11-16 12:00:31,675 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][63], [60#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 155#(= ~w~0 1), Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse, 21#L717-1true]) [2022-11-16 12:00:31,675 INFO L383 tUnfolder$Statistics]: this new event has 66 ancestors and is cut-off event [2022-11-16 12:00:31,676 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-16 12:00:31,676 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-16 12:00:31,676 INFO L386 tUnfolder$Statistics]: existing Event has 66 ancestors and is cut-off event [2022-11-16 12:00:31,706 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [60#L748-4true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 153#true, 94#L721true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-16 12:00:31,706 INFO L383 tUnfolder$Statistics]: this new event has 68 ancestors and is cut-off event [2022-11-16 12:00:31,706 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-16 12:00:31,706 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-16 12:00:31,707 INFO L386 tUnfolder$Statistics]: existing Event has 68 ancestors and is cut-off event [2022-11-16 12:00:31,771 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([249] L739-2-->L740: Formula: (= v_~r~0_18 (+ v_~r~0_17 1)) InVars {~r~0=v_~r~0_18} OutVars{~r~0=v_~r~0_17} AuxVars[] AssignedVars[~r~0][62], [107#L749-2true, 131#(= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|), 102#L740true, 71#L740true, 153#true, Black: 139#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), 116#L721true, Black: 141#(and (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 137#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0) (= |readerThread1of1ForFork0_~lx~0#1| |readerThread1of1ForFork0_~ly~0#1|)), Black: 128#(= |readerThread1of1ForFork0_~l~0#1| ~x~0), Black: 135#(and (= ~y~0 ~x~0) (= ~x~0 |readerThread1of1ForFork0_~ly~0#1|) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 133#(and (= ~y~0 ~x~0) (= |readerThread1of1ForFork0_~l~0#1| ~x~0)), Black: 126#true, readerThread1of1ForFork3InUse]) [2022-11-16 12:00:31,772 INFO L383 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-11-16 12:00:31,772 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-16 12:00:31,772 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-16 12:00:31,772 INFO L386 tUnfolder$Statistics]: existing Event has 74 ancestors and is cut-off event [2022-11-16 12:00:31,798 INFO L130 PetriNetUnfolder]: 890/2859 cut-off events. [2022-11-16 12:00:31,798 INFO L131 PetriNetUnfolder]: For 676/687 co-relation queries the response was YES. [2022-11-16 12:00:31,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5463 conditions, 2859 events. 890/2859 cut-off events. For 676/687 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 26229 event pairs, 295 based on Foata normal form. 124/2858 useless extension candidates. Maximal degree in co-relation 4840. Up to 649 conditions per place. [2022-11-16 12:00:31,834 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-11-16 12:00:31,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 124 transitions, 433 flow [2022-11-16 12:00:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:00:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:00:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 306 transitions. [2022-11-16 12:00:31,836 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9107142857142857 [2022-11-16 12:00:31,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 306 transitions. [2022-11-16 12:00:31,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 306 transitions. [2022-11-16 12:00:31,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:31,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 306 transitions. [2022-11-16 12:00:31,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,841 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,841 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 367 flow. Second operand 3 states and 306 transitions. [2022-11-16 12:00:31,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 124 transitions, 433 flow [2022-11-16 12:00:31,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 124 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:31,860 INFO L231 Difference]: Finished difference. Result has 118 places, 117 transitions, 383 flow [2022-11-16 12:00:31,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=383, PETRI_PLACES=118, PETRI_TRANSITIONS=117} [2022-11-16 12:00:31,862 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 13 predicate places. [2022-11-16 12:00:31,862 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 117 transitions, 383 flow [2022-11-16 12:00:31,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:31,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:31,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:00:31,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:31,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1184537247, now seen corresponding path program 2 times [2022-11-16 12:00:31,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:31,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852803593] [2022-11-16 12:00:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:32,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:32,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852803593] [2022-11-16 12:00:32,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852803593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:32,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:32,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:00:32,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140647453] [2022-11-16 12:00:32,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:32,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:32,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:32,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:32,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:32,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-16 12:00:32,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 117 transitions, 383 flow. Second operand has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:32,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-16 12:00:32,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:32,416 INFO L130 PetriNetUnfolder]: 304/1699 cut-off events. [2022-11-16 12:00:32,416 INFO L131 PetriNetUnfolder]: For 832/877 co-relation queries the response was YES. [2022-11-16 12:00:32,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3194 conditions, 1699 events. 304/1699 cut-off events. For 832/877 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 15606 event pairs, 42 based on Foata normal form. 27/1674 useless extension candidates. Maximal degree in co-relation 2866. Up to 271 conditions per place. [2022-11-16 12:00:32,431 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 23 selfloop transitions, 9 changer transitions 2/137 dead transitions. [2022-11-16 12:00:32,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 137 transitions, 517 flow [2022-11-16 12:00:32,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:00:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:00:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2022-11-16 12:00:32,433 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9285714285714286 [2022-11-16 12:00:32,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2022-11-16 12:00:32,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2022-11-16 12:00:32,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:32,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2022-11-16 12:00:32,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,437 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,438 INFO L175 Difference]: Start difference. First operand has 118 places, 117 transitions, 383 flow. Second operand 4 states and 416 transitions. [2022-11-16 12:00:32,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 137 transitions, 517 flow [2022-11-16 12:00:32,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 137 transitions, 505 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:32,446 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 441 flow [2022-11-16 12:00:32,446 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=441, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2022-11-16 12:00:32,447 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 17 predicate places. [2022-11-16 12:00:32,447 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 441 flow [2022-11-16 12:00:32,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,448 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:32,448 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:32,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:00:32,449 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1149119989, now seen corresponding path program 1 times [2022-11-16 12:00:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:32,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398537654] [2022-11-16 12:00:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:32,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:32,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:32,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398537654] [2022-11-16 12:00:32,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398537654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:32,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:32,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:32,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581326429] [2022-11-16 12:00:32,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:32,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:32,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:32,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:32,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:32,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-16 12:00:32,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 123 transitions, 441 flow. Second operand has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:32,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:32,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-16 12:00:32,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:33,525 INFO L130 PetriNetUnfolder]: 1613/4010 cut-off events. [2022-11-16 12:00:33,526 INFO L131 PetriNetUnfolder]: For 4798/4805 co-relation queries the response was YES. [2022-11-16 12:00:33,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10835 conditions, 4010 events. 1613/4010 cut-off events. For 4798/4805 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 36874 event pairs, 401 based on Foata normal form. 0/3916 useless extension candidates. Maximal degree in co-relation 10228. Up to 724 conditions per place. [2022-11-16 12:00:33,564 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 120 selfloop transitions, 47 changer transitions 42/275 dead transitions. [2022-11-16 12:00:33,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 275 transitions, 1651 flow [2022-11-16 12:00:33,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:00:33,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:00:33,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 950 transitions. [2022-11-16 12:00:33,567 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8482142857142857 [2022-11-16 12:00:33,567 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 950 transitions. [2022-11-16 12:00:33,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 950 transitions. [2022-11-16 12:00:33,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:33,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 950 transitions. [2022-11-16 12:00:33,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 95.0) internal successors, (950), 10 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:33,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:33,574 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 112.0) internal successors, (1232), 11 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:33,575 INFO L175 Difference]: Start difference. First operand has 122 places, 123 transitions, 441 flow. Second operand 10 states and 950 transitions. [2022-11-16 12:00:33,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 275 transitions, 1651 flow [2022-11-16 12:00:33,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 275 transitions, 1651 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:33,599 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 862 flow [2022-11-16 12:00:33,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=862, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2022-11-16 12:00:33,600 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 34 predicate places. [2022-11-16 12:00:33,601 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 862 flow [2022-11-16 12:00:33,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.16666666666667) internal successors, (499), 6 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:33,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:33,601 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:00:33,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:33,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1910529791, now seen corresponding path program 1 times [2022-11-16 12:00:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:33,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404296679] [2022-11-16 12:00:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:33,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:33,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404296679] [2022-11-16 12:00:33,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404296679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:33,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:33,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:33,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022227239] [2022-11-16 12:00:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:33,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:33,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:33,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:33,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:33,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-16 12:00:33,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:33,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:33,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-16 12:00:33,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:34,783 INFO L130 PetriNetUnfolder]: 1388/3770 cut-off events. [2022-11-16 12:00:34,783 INFO L131 PetriNetUnfolder]: For 6689/6691 co-relation queries the response was YES. [2022-11-16 12:00:34,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11911 conditions, 3770 events. 1388/3770 cut-off events. For 6689/6691 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 35807 event pairs, 304 based on Foata normal form. 38/3762 useless extension candidates. Maximal degree in co-relation 11237. Up to 588 conditions per place. [2022-11-16 12:00:34,824 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 109 selfloop transitions, 55 changer transitions 10/240 dead transitions. [2022-11-16 12:00:34,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 240 transitions, 1682 flow [2022-11-16 12:00:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:34,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 842 transitions. [2022-11-16 12:00:34,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8353174603174603 [2022-11-16 12:00:34,829 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 842 transitions. [2022-11-16 12:00:34,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 842 transitions. [2022-11-16 12:00:34,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:34,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 842 transitions. [2022-11-16 12:00:34,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 93.55555555555556) internal successors, (842), 9 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:34,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:34,836 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:34,836 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 862 flow. Second operand 9 states and 842 transitions. [2022-11-16 12:00:34,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 240 transitions, 1682 flow [2022-11-16 12:00:34,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 240 transitions, 1662 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:34,887 INFO L231 Difference]: Finished difference. Result has 151 places, 173 transitions, 1130 flow [2022-11-16 12:00:34,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1130, PETRI_PLACES=151, PETRI_TRANSITIONS=173} [2022-11-16 12:00:34,889 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 46 predicate places. [2022-11-16 12:00:34,889 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 1130 flow [2022-11-16 12:00:34,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:34,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:34,890 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:34,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:00:34,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1123190917, now seen corresponding path program 1 times [2022-11-16 12:00:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572009270] [2022-11-16 12:00:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:35,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:35,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572009270] [2022-11-16 12:00:35,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572009270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:35,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:35,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:00:35,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887920362] [2022-11-16 12:00:35,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:35,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:35,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:35,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:35,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:35,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 112 [2022-11-16 12:00:35,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 1130 flow. Second operand has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:35,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:35,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 112 [2022-11-16 12:00:35,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:36,047 INFO L130 PetriNetUnfolder]: 1491/3962 cut-off events. [2022-11-16 12:00:36,047 INFO L131 PetriNetUnfolder]: For 9153/9160 co-relation queries the response was YES. [2022-11-16 12:00:36,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13274 conditions, 3962 events. 1491/3962 cut-off events. For 9153/9160 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37369 event pairs, 363 based on Foata normal form. 46/3945 useless extension candidates. Maximal degree in co-relation 12010. Up to 736 conditions per place. [2022-11-16 12:00:36,102 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 118 selfloop transitions, 62 changer transitions 18/267 dead transitions. [2022-11-16 12:00:36,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 267 transitions, 2104 flow [2022-11-16 12:00:36,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:00:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:00:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 853 transitions. [2022-11-16 12:00:36,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8462301587301587 [2022-11-16 12:00:36,107 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 853 transitions. [2022-11-16 12:00:36,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 853 transitions. [2022-11-16 12:00:36,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:36,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 853 transitions. [2022-11-16 12:00:36,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 94.77777777777777) internal successors, (853), 9 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:36,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:36,115 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:36,117 INFO L175 Difference]: Start difference. First operand has 151 places, 173 transitions, 1130 flow. Second operand 9 states and 853 transitions. [2022-11-16 12:00:36,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 267 transitions, 2104 flow [2022-11-16 12:00:36,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 267 transitions, 2088 flow, removed 8 selfloop flow, removed 0 redundant places. [2022-11-16 12:00:36,265 INFO L231 Difference]: Finished difference. Result has 164 places, 187 transitions, 1462 flow [2022-11-16 12:00:36,266 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1462, PETRI_PLACES=164, PETRI_TRANSITIONS=187} [2022-11-16 12:00:36,268 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 59 predicate places. [2022-11-16 12:00:36,268 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 187 transitions, 1462 flow [2022-11-16 12:00:36,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:36,269 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:36,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:00:36,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:36,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash -939965522, now seen corresponding path program 1 times [2022-11-16 12:00:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:36,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910067026] [2022-11-16 12:00:36,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:36,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:36,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910067026] [2022-11-16 12:00:36,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910067026] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:36,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:36,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:36,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314375808] [2022-11-16 12:00:36,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:36,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:00:36,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:36,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:00:36,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:36,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-16 12:00:36,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 187 transitions, 1462 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:36,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:36,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-16 12:00:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:37,000 INFO L130 PetriNetUnfolder]: 270/1876 cut-off events. [2022-11-16 12:00:37,001 INFO L131 PetriNetUnfolder]: For 4476/4584 co-relation queries the response was YES. [2022-11-16 12:00:37,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5804 conditions, 1876 events. 270/1876 cut-off events. For 4476/4584 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18518 event pairs, 52 based on Foata normal form. 93/1955 useless extension candidates. Maximal degree in co-relation 5661. Up to 171 conditions per place. [2022-11-16 12:00:37,018 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 18 selfloop transitions, 8 changer transitions 24/176 dead transitions. [2022-11-16 12:00:37,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 176 transitions, 1192 flow [2022-11-16 12:00:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:00:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:00:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 511 transitions. [2022-11-16 12:00:37,021 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9125 [2022-11-16 12:00:37,021 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 511 transitions. [2022-11-16 12:00:37,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 511 transitions. [2022-11-16 12:00:37,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:37,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 511 transitions. [2022-11-16 12:00:37,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,026 INFO L175 Difference]: Start difference. First operand has 164 places, 187 transitions, 1462 flow. Second operand 5 states and 511 transitions. [2022-11-16 12:00:37,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 176 transitions, 1192 flow [2022-11-16 12:00:37,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 176 transitions, 1115 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-11-16 12:00:37,057 INFO L231 Difference]: Finished difference. Result has 164 places, 145 transitions, 852 flow [2022-11-16 12:00:37,058 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=852, PETRI_PLACES=164, PETRI_TRANSITIONS=145} [2022-11-16 12:00:37,059 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 59 predicate places. [2022-11-16 12:00:37,059 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 145 transitions, 852 flow [2022-11-16 12:00:37,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,060 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:37,060 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:37,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:00:37,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-16 12:00:37,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:37,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1272096156, now seen corresponding path program 2 times [2022-11-16 12:00:37,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:37,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660381267] [2022-11-16 12:00:37,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:37,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:37,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:00:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660381267] [2022-11-16 12:00:37,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660381267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:37,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:37,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509540163] [2022-11-16 12:00:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:00:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:00:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:00:37,237 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 112 [2022-11-16 12:00:37,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 145 transitions, 852 flow. Second operand has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:37,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 112 [2022-11-16 12:00:37,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:37,434 INFO L130 PetriNetUnfolder]: 81/675 cut-off events. [2022-11-16 12:00:37,434 INFO L131 PetriNetUnfolder]: For 1642/1648 co-relation queries the response was YES. [2022-11-16 12:00:37,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 675 events. 81/675 cut-off events. For 1642/1648 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4614 event pairs, 26 based on Foata normal form. 11/681 useless extension candidates. Maximal degree in co-relation 2207. Up to 80 conditions per place. [2022-11-16 12:00:37,441 INFO L137 encePairwiseOnDemand]: 105/112 looper letters, 0 selfloop transitions, 0 changer transitions 116/116 dead transitions. [2022-11-16 12:00:37,441 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 116 transitions, 564 flow [2022-11-16 12:00:37,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:00:37,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:00:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 505 transitions. [2022-11-16 12:00:37,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9017857142857143 [2022-11-16 12:00:37,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 505 transitions. [2022-11-16 12:00:37,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 505 transitions. [2022-11-16 12:00:37,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:37,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 505 transitions. [2022-11-16 12:00:37,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.0) internal successors, (505), 5 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,449 INFO L175 Difference]: Start difference. First operand has 164 places, 145 transitions, 852 flow. Second operand 5 states and 505 transitions. [2022-11-16 12:00:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 116 transitions, 564 flow [2022-11-16 12:00:37,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 116 transitions, 464 flow, removed 14 selfloop flow, removed 21 redundant places. [2022-11-16 12:00:37,458 INFO L231 Difference]: Finished difference. Result has 134 places, 0 transitions, 0 flow [2022-11-16 12:00:37,459 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=134, PETRI_TRANSITIONS=0} [2022-11-16 12:00:37,459 INFO L288 CegarLoopForPetriNet]: 105 programPoint places, 29 predicate places. [2022-11-16 12:00:37,460 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 0 transitions, 0 flow [2022-11-16 12:00:37,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:37,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-11-16 12:00:37,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2022-11-16 12:00:37,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-16 12:00:37,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-11-16 12:00:37,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-11-16 12:00:37,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-11-16 12:00:37,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-11-16 12:00:37,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:00:37,466 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2022-11-16 12:00:37,472 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:00:37,472 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:00:37,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:00:37 BasicIcfg [2022-11-16 12:00:37,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:00:37,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:00:37,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:00:37,479 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:00:37,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:00:27" (3/4) ... [2022-11-16 12:00:37,483 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:00:37,488 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2022-11-16 12:00:37,489 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2022-11-16 12:00:37,493 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2022-11-16 12:00:37,494 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:00:37,494 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:00:37,494 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:00:37,529 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:00:37,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:00:37,531 INFO L158 Benchmark]: Toolchain (without parser) took 11616.51ms. Allocated memory was 136.3MB in the beginning and 746.6MB in the end (delta: 610.3MB). Free memory was 99.9MB in the beginning and 465.9MB in the end (delta: -366.0MB). Peak memory consumption was 243.9MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,531 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 136.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:00:37,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 711.30ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 102.2MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,532 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.45ms. Allocated memory is still 136.3MB. Free memory was 102.2MB in the beginning and 99.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,532 INFO L158 Benchmark]: Boogie Preprocessor took 65.36ms. Allocated memory is still 136.3MB. Free memory was 99.9MB in the beginning and 98.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,533 INFO L158 Benchmark]: RCFGBuilder took 822.83ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 81.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,533 INFO L158 Benchmark]: TraceAbstraction took 9865.70ms. Allocated memory was 136.3MB in the beginning and 746.6MB in the end (delta: 610.3MB). Free memory was 81.2MB in the beginning and 468.0MB in the end (delta: -386.8MB). Peak memory consumption was 225.3MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,534 INFO L158 Benchmark]: Witness Printer took 51.25ms. Allocated memory is still 746.6MB. Free memory was 468.0MB in the beginning and 465.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:00:37,536 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 136.3MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 711.30ms. Allocated memory is still 136.3MB. Free memory was 99.7MB in the beginning and 102.2MB in the end (delta: -2.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.45ms. Allocated memory is still 136.3MB. Free memory was 102.2MB in the beginning and 99.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.36ms. Allocated memory is still 136.3MB. Free memory was 99.9MB in the beginning and 98.4MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 822.83ms. Allocated memory is still 136.3MB. Free memory was 98.4MB in the beginning and 81.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 9865.70ms. Allocated memory was 136.3MB in the beginning and 746.6MB in the end (delta: 610.3MB). Free memory was 81.2MB in the beginning and 468.0MB in the end (delta: -386.8MB). Peak memory consumption was 225.3MB. Max. memory is 16.1GB. * Witness Printer took 51.25ms. Allocated memory is still 746.6MB. Free memory was 468.0MB in the beginning and 465.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 739]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 136 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 434 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 434 mSDsluCounter, 247 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1274 IncrementalHoareTripleChecker+Invalid, 1306 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 107 mSDtfsCounter, 1274 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1462occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 412 NumberOfCodeBlocks, 412 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 404 ConstructedInterpolants, 0 QuantifiedInterpolants, 692 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:00:37,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78de7cf0-0845-4432-ad04-87e033b2999f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE