./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:44:27,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:44:27,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:44:27,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:44:27,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:44:27,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:44:27,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:44:27,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:44:27,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:44:27,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:44:27,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:44:27,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:44:27,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:44:27,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:44:27,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:44:27,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:44:27,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:44:27,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:44:27,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:44:27,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:44:27,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:44:27,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:44:27,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:44:27,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:44:27,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:44:27,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:44:27,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:44:27,484 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:44:27,485 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:44:27,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:44:27,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:44:27,490 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:44:27,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:44:27,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:44:27,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:44:27,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:44:27,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:44:27,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:44:27,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:44:27,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:44:27,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:44:27,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 05:44:27,568 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:44:27,569 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:44:27,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:44:27,570 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:44:27,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:44:27,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:44:27,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:44:27,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:44:27,574 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:44:27,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:44:27,576 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:44:27,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:44:27,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:44:27,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:44:27,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 05:44:27,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:44:27,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 05:44:27,578 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:44:27,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 05:44:27,578 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:44:27,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 05:44:27,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:44:27,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:44:27,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:44:27,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:44:27,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:44:27,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:44:27,581 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 05:44:27,604 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:44:27,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:44:27,605 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 05:44:27,605 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 05:44:27,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 05:44:27,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:44:27,606 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_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2021-11-20 05:44:27,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:44:27,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:44:27,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:44:27,991 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:44:27,992 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:44:27,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-20 05:44:28,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/data/f8916b23e/537ac5397c034d6593a3ef5ce67a1d19/FLAG66f670523 [2021-11-20 05:44:28,690 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:44:28,691 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-20 05:44:28,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/data/f8916b23e/537ac5397c034d6593a3ef5ce67a1d19/FLAG66f670523 [2021-11-20 05:44:29,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/data/f8916b23e/537ac5397c034d6593a3ef5ce67a1d19 [2021-11-20 05:44:29,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:44:29,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:44:29,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:44:29,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:44:29,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:44:29,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7ad0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29, skipping insertion in model container [2021-11-20 05:44:29,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:44:29,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:44:29,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-20 05:44:29,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:44:29,460 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:44:29,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-20 05:44:29,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:44:29,527 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:44:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29 WrapperNode [2021-11-20 05:44:29,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:44:29,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:44:29,530 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:44:29,530 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:44:29,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,596 INFO L137 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2021-11-20 05:44:29,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:44:29,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:44:29,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:44:29,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:44:29,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,672 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:44:29,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:44:29,673 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:44:29,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:44:29,683 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (1/1) ... [2021-11-20 05:44:29,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:44:29,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:44:29,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:44:29,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42b11863-6a1a-456b-bb94-f0280a2538e1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:44:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:44:29,808 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 05:44:29,808 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 05:44:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 05:44:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 05:44:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-20 05:44:29,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-20 05:44:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 05:44:29,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 05:44:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 05:44:29,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-20 05:44:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-20 05:44:29,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:44:29,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:44:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 05:44:29,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 05:44:29,814 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 05:44:29,956 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:44:29,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:44:30,469 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:44:30,739 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:44:30,739 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:44:30,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:44:30 BoogieIcfgContainer [2021-11-20 05:44:30,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:44:30,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:44:30,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:44:30,766 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:44:30,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:44:29" (1/3) ... [2021-11-20 05:44:30,768 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a7cfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:44:30, skipping insertion in model container [2021-11-20 05:44:30,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:44:29" (2/3) ... [2021-11-20 05:44:30,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49a7cfc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:44:30, skipping insertion in model container [2021-11-20 05:44:30,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:44:30" (3/3) ... [2021-11-20 05:44:30,772 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2021-11-20 05:44:30,790 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 05:44:30,790 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:44:30,792 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 05:44:30,792 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 05:44:30,881 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,882 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,883 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,884 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,885 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,886 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,887 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,888 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,889 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,890 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,891 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,911 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,912 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,918 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,918 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,918 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,919 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,919 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,919 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,920 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,921 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,922 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,923 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,925 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,926 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,926 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,927 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,928 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,929 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,939 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,944 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,945 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,945 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,946 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,947 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,948 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,949 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,950 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 05:44:30,957 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-20 05:44:31,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:44:31,038 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:44:31,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-20 05:44:31,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2021-11-20 05:44:31,191 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2021-11-20 05:44:31,191 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 05:44:31,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2021-11-20 05:44:31,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2021-11-20 05:44:31,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2021-11-20 05:44:31,332 INFO L129 PetriNetUnfolder]: 2/137 cut-off events. [2021-11-20 05:44:31,339 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-20 05:44:31,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:31,341 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:31,341 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:31,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276246, now seen corresponding path program 1 times [2021-11-20 05:44:31,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:31,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251043962] [2021-11-20 05:44:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:31,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:32,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:32,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251043962] [2021-11-20 05:44:32,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251043962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:32,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:32,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 05:44:32,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452985432] [2021-11-20 05:44:32,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:32,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:44:32,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:32,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:44:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:44:32,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2021-11-20 05:44:32,832 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:32,832 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:32,832 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2021-11-20 05:44:32,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:35,780 INFO L129 PetriNetUnfolder]: 2149/5089 cut-off events. [2021-11-20 05:44:35,781 INFO L130 PetriNetUnfolder]: For 606/606 co-relation queries the response was YES. [2021-11-20 05:44:35,809 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9028 conditions, 5089 events. 2149/5089 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 40371 event pairs, 1260 based on Foata normal form. 7/5034 useless extension candidates. Maximal degree in co-relation 8679. Up to 1966 conditions per place. [2021-11-20 05:44:35,867 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 152 selfloop transitions, 21 changer transitions 23/281 dead transitions. [2021-11-20 05:44:35,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 281 transitions, 1026 flow [2021-11-20 05:44:35,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 05:44:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 05:44:35,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2262 transitions. [2021-11-20 05:44:35,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7086466165413534 [2021-11-20 05:44:35,908 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2262 transitions. [2021-11-20 05:44:35,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2262 transitions. [2021-11-20 05:44:35,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:35,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2262 transitions. [2021-11-20 05:44:35,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.71428571428571) internal successors, (2262), 21 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:35,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:35,984 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:35,987 INFO L186 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2262 transitions. [2021-11-20 05:44:35,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 281 transitions, 1026 flow [2021-11-20 05:44:36,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 281 transitions, 978 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-20 05:44:36,027 INFO L242 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2021-11-20 05:44:36,030 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2021-11-20 05:44:36,037 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2021-11-20 05:44:36,037 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2021-11-20 05:44:36,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:36,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:36,042 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:36,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 05:44:36,044 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:36,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:36,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1053824886, now seen corresponding path program 2 times [2021-11-20 05:44:36,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:36,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097727253] [2021-11-20 05:44:36,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:36,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:36,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:36,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:36,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:36,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097727253] [2021-11-20 05:44:36,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097727253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:36,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:36,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:44:36,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987265289] [2021-11-20 05:44:36,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:36,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:44:36,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:44:36,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:44:36,340 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-11-20 05:44:36,341 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:36,341 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:36,341 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-11-20 05:44:36,342 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:37,162 INFO L129 PetriNetUnfolder]: 1293/3268 cut-off events. [2021-11-20 05:44:37,162 INFO L130 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2021-11-20 05:44:37,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5962 conditions, 3268 events. 1293/3268 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 24843 event pairs, 840 based on Foata normal form. 68/3284 useless extension candidates. Maximal degree in co-relation 5933. Up to 1387 conditions per place. [2021-11-20 05:44:37,205 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 44 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2021-11-20 05:44:37,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 506 flow [2021-11-20 05:44:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:44:37,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:44:37,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2021-11-20 05:44:37,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-11-20 05:44:37,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2021-11-20 05:44:37,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2021-11-20 05:44:37,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:37,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2021-11-20 05:44:37,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:37,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:37,217 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:37,222 INFO L186 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 3 states and 399 transitions. [2021-11-20 05:44:37,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 506 flow [2021-11-20 05:44:37,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-11-20 05:44:37,240 INFO L242 Difference]: Finished difference. Result has 152 places, 150 transitions, 384 flow [2021-11-20 05:44:37,241 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2021-11-20 05:44:37,243 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2021-11-20 05:44:37,244 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 384 flow [2021-11-20 05:44:37,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:37,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:37,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:37,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 05:44:37,253 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:37,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:37,256 INFO L85 PathProgramCache]: Analyzing trace with hash 634887492, now seen corresponding path program 3 times [2021-11-20 05:44:37,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:37,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587904988] [2021-11-20 05:44:37,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:37,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:37,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587904988] [2021-11-20 05:44:37,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587904988] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:37,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:37,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 05:44:37,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195411034] [2021-11-20 05:44:37,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:37,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:44:37,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:37,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:44:37,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:44:37,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2021-11-20 05:44:37,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:37,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:37,775 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2021-11-20 05:44:37,775 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:39,971 INFO L129 PetriNetUnfolder]: 2236/5812 cut-off events. [2021-11-20 05:44:39,972 INFO L130 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2021-11-20 05:44:40,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11275 conditions, 5812 events. 2236/5812 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49756 event pairs, 1201 based on Foata normal form. 1/5765 useless extension candidates. Maximal degree in co-relation 8235. Up to 1905 conditions per place. [2021-11-20 05:44:40,045 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 168 selfloop transitions, 32 changer transitions 18/303 dead transitions. [2021-11-20 05:44:40,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 1234 flow [2021-11-20 05:44:40,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:44:40,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-20 05:44:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1668 transitions. [2021-11-20 05:44:40,056 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7315789473684211 [2021-11-20 05:44:40,056 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1668 transitions. [2021-11-20 05:44:40,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1668 transitions. [2021-11-20 05:44:40,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:40,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1668 transitions. [2021-11-20 05:44:40,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.2) internal successors, (1668), 15 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,076 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,077 INFO L186 Difference]: Start difference. First operand has 152 places, 150 transitions, 384 flow. Second operand 15 states and 1668 transitions. [2021-11-20 05:44:40,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 1234 flow [2021-11-20 05:44:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:44:40,101 INFO L242 Difference]: Finished difference. Result has 172 places, 171 transitions, 607 flow [2021-11-20 05:44:40,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=607, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2021-11-20 05:44:40,105 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2021-11-20 05:44:40,105 INFO L470 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 607 flow [2021-11-20 05:44:40,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:40,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:40,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 05:44:40,108 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:40,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1266518126, now seen corresponding path program 4 times [2021-11-20 05:44:40,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:40,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984471690] [2021-11-20 05:44:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:40,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:40,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:40,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984471690] [2021-11-20 05:44:40,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984471690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:40,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:40,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 05:44:40,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354899044] [2021-11-20 05:44:40,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:40,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:44:40,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:40,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:44:40,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:44:40,498 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:44:40,500 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:40,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:40,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:44:40,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:42,830 INFO L129 PetriNetUnfolder]: 3098/7699 cut-off events. [2021-11-20 05:44:42,831 INFO L130 PetriNetUnfolder]: For 1391/1435 co-relation queries the response was YES. [2021-11-20 05:44:42,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15340 conditions, 7699 events. 3098/7699 cut-off events. For 1391/1435 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 68690 event pairs, 1313 based on Foata normal form. 68/7479 useless extension candidates. Maximal degree in co-relation 15254. Up to 3570 conditions per place. [2021-11-20 05:44:42,957 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 120 selfloop transitions, 31 changer transitions 0/278 dead transitions. [2021-11-20 05:44:42,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 278 transitions, 1147 flow [2021-11-20 05:44:42,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:44:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 05:44:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1389 transitions. [2021-11-20 05:44:42,966 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615131578947368 [2021-11-20 05:44:42,967 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1389 transitions. [2021-11-20 05:44:42,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1389 transitions. [2021-11-20 05:44:42,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:42,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1389 transitions. [2021-11-20 05:44:42,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.75) internal successors, (1389), 12 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:42,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:42,986 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:42,986 INFO L186 Difference]: Start difference. First operand has 172 places, 171 transitions, 607 flow. Second operand 12 states and 1389 transitions. [2021-11-20 05:44:42,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 278 transitions, 1147 flow [2021-11-20 05:44:43,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 278 transitions, 1133 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-11-20 05:44:43,041 INFO L242 Difference]: Finished difference. Result has 181 places, 200 transitions, 787 flow [2021-11-20 05:44:43,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=787, PETRI_PLACES=181, PETRI_TRANSITIONS=200} [2021-11-20 05:44:43,044 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 35 predicate places. [2021-11-20 05:44:43,045 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 200 transitions, 787 flow [2021-11-20 05:44:43,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 107.88888888888889) internal successors, (971), 9 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:43,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:43,048 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:43,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 05:44:43,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1601839960, now seen corresponding path program 5 times [2021-11-20 05:44:43,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:43,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775950686] [2021-11-20 05:44:43,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:43,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:43,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:43,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:43,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775950686] [2021-11-20 05:44:43,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775950686] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:43,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:43,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:44:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409353053] [2021-11-20 05:44:43,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:43,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:44:43,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:44:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:44:43,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:44:43,445 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 200 transitions, 787 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:43,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:43,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:44:43,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:45,947 INFO L129 PetriNetUnfolder]: 3426/8197 cut-off events. [2021-11-20 05:44:45,947 INFO L130 PetriNetUnfolder]: For 4401/4449 co-relation queries the response was YES. [2021-11-20 05:44:46,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19665 conditions, 8197 events. 3426/8197 cut-off events. For 4401/4449 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 72668 event pairs, 1630 based on Foata normal form. 51/7923 useless extension candidates. Maximal degree in co-relation 18929. Up to 4310 conditions per place. [2021-11-20 05:44:46,070 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 118 selfloop transitions, 33 changer transitions 0/278 dead transitions. [2021-11-20 05:44:46,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 278 transitions, 1359 flow [2021-11-20 05:44:46,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 05:44:46,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-20 05:44:46,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1262 transitions. [2021-11-20 05:44:46,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547846889952153 [2021-11-20 05:44:46,078 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1262 transitions. [2021-11-20 05:44:46,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1262 transitions. [2021-11-20 05:44:46,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:46,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1262 transitions. [2021-11-20 05:44:46,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.72727272727273) internal successors, (1262), 11 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:46,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:46,092 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:46,093 INFO L186 Difference]: Start difference. First operand has 181 places, 200 transitions, 787 flow. Second operand 11 states and 1262 transitions. [2021-11-20 05:44:46,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 278 transitions, 1359 flow [2021-11-20 05:44:46,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 278 transitions, 1355 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:44:46,185 INFO L242 Difference]: Finished difference. Result has 195 places, 219 transitions, 1005 flow [2021-11-20 05:44:46,185 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1005, PETRI_PLACES=195, PETRI_TRANSITIONS=219} [2021-11-20 05:44:46,189 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 49 predicate places. [2021-11-20 05:44:46,190 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 219 transitions, 1005 flow [2021-11-20 05:44:46,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:46,192 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:46,192 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:46,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 05:44:46,193 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:46,194 INFO L85 PathProgramCache]: Analyzing trace with hash -23718334, now seen corresponding path program 6 times [2021-11-20 05:44:46,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:46,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347357008] [2021-11-20 05:44:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:46,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:46,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:46,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:46,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347357008] [2021-11-20 05:44:46,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347357008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:46,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:46,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 05:44:46,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430794045] [2021-11-20 05:44:46,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:46,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:44:46,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:46,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:44:46,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:44:46,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 152 [2021-11-20 05:44:46,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 219 transitions, 1005 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:46,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:46,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 152 [2021-11-20 05:44:46,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:48,854 INFO L129 PetriNetUnfolder]: 3046/7466 cut-off events. [2021-11-20 05:44:48,854 INFO L130 PetriNetUnfolder]: For 7011/7115 co-relation queries the response was YES. [2021-11-20 05:44:48,956 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19989 conditions, 7466 events. 3046/7466 cut-off events. For 7011/7115 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 66682 event pairs, 1026 based on Foata normal form. 56/7358 useless extension candidates. Maximal degree in co-relation 19514. Up to 3154 conditions per place. [2021-11-20 05:44:49,015 INFO L132 encePairwiseOnDemand]: 143/152 looper letters, 128 selfloop transitions, 48 changer transitions 0/307 dead transitions. [2021-11-20 05:44:49,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 307 transitions, 1758 flow [2021-11-20 05:44:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:44:49,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-20 05:44:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1068 transitions. [2021-11-20 05:44:49,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7807017543859649 [2021-11-20 05:44:49,022 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1068 transitions. [2021-11-20 05:44:49,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1068 transitions. [2021-11-20 05:44:49,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:49,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1068 transitions. [2021-11-20 05:44:49,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.66666666666667) internal successors, (1068), 9 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:49,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:49,035 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:49,036 INFO L186 Difference]: Start difference. First operand has 195 places, 219 transitions, 1005 flow. Second operand 9 states and 1068 transitions. [2021-11-20 05:44:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 307 transitions, 1758 flow [2021-11-20 05:44:49,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 307 transitions, 1748 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-11-20 05:44:49,176 INFO L242 Difference]: Finished difference. Result has 205 places, 242 transitions, 1304 flow [2021-11-20 05:44:49,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1304, PETRI_PLACES=205, PETRI_TRANSITIONS=242} [2021-11-20 05:44:49,178 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 59 predicate places. [2021-11-20 05:44:49,178 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 242 transitions, 1304 flow [2021-11-20 05:44:49,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:49,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:49,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:49,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 05:44:49,181 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:49,182 INFO L85 PathProgramCache]: Analyzing trace with hash 647278120, now seen corresponding path program 7 times [2021-11-20 05:44:49,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:49,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428409841] [2021-11-20 05:44:49,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:49,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:49,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:49,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:49,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428409841] [2021-11-20 05:44:49,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428409841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:49,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:49,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:44:49,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266393920] [2021-11-20 05:44:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:49,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:44:49,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:49,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:44:49,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:44:49,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:44:49,538 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 242 transitions, 1304 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:49,539 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:49,539 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:44:49,539 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:52,203 INFO L129 PetriNetUnfolder]: 3858/9202 cut-off events. [2021-11-20 05:44:52,204 INFO L130 PetriNetUnfolder]: For 14214/14388 co-relation queries the response was YES. [2021-11-20 05:44:52,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26947 conditions, 9202 events. 3858/9202 cut-off events. For 14214/14388 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 83716 event pairs, 1578 based on Foata normal form. 28/8925 useless extension candidates. Maximal degree in co-relation 26066. Up to 5827 conditions per place. [2021-11-20 05:44:52,382 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 147 selfloop transitions, 23 changer transitions 29/326 dead transitions. [2021-11-20 05:44:52,382 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 326 transitions, 2106 flow [2021-11-20 05:44:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:44:52,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 05:44:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1365 transitions. [2021-11-20 05:44:52,389 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7483552631578947 [2021-11-20 05:44:52,390 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1365 transitions. [2021-11-20 05:44:52,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1365 transitions. [2021-11-20 05:44:52,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:52,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1365 transitions. [2021-11-20 05:44:52,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 113.75) internal successors, (1365), 12 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:52,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:52,405 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:52,405 INFO L186 Difference]: Start difference. First operand has 205 places, 242 transitions, 1304 flow. Second operand 12 states and 1365 transitions. [2021-11-20 05:44:52,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 326 transitions, 2106 flow [2021-11-20 05:44:52,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 326 transitions, 2079 flow, removed 6 selfloop flow, removed 3 redundant places. [2021-11-20 05:44:52,730 INFO L242 Difference]: Finished difference. Result has 221 places, 256 transitions, 1540 flow [2021-11-20 05:44:52,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1289, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1540, PETRI_PLACES=221, PETRI_TRANSITIONS=256} [2021-11-20 05:44:52,732 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 75 predicate places. [2021-11-20 05:44:52,732 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 256 transitions, 1540 flow [2021-11-20 05:44:52,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:52,733 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:52,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:52,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 05:44:52,734 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:52,735 INFO L85 PathProgramCache]: Analyzing trace with hash 102463396, now seen corresponding path program 8 times [2021-11-20 05:44:52,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:52,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317227064] [2021-11-20 05:44:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:52,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:52,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:52,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317227064] [2021-11-20 05:44:52,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317227064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:52,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:52,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 05:44:52,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291795009] [2021-11-20 05:44:52,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:52,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 05:44:52,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:52,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 05:44:52,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 05:44:52,836 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2021-11-20 05:44:52,837 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 256 transitions, 1540 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:52,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:52,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2021-11-20 05:44:52,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:54,709 INFO L129 PetriNetUnfolder]: 2627/6931 cut-off events. [2021-11-20 05:44:54,710 INFO L130 PetriNetUnfolder]: For 10917/11015 co-relation queries the response was YES. [2021-11-20 05:44:54,808 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20940 conditions, 6931 events. 2627/6931 cut-off events. For 10917/11015 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 62702 event pairs, 1303 based on Foata normal form. 258/7054 useless extension candidates. Maximal degree in co-relation 20460. Up to 2625 conditions per place. [2021-11-20 05:44:54,861 INFO L132 encePairwiseOnDemand]: 148/152 looper letters, 111 selfloop transitions, 2 changer transitions 0/283 dead transitions. [2021-11-20 05:44:54,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 283 transitions, 1936 flow [2021-11-20 05:44:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 05:44:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 05:44:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2021-11-20 05:44:54,864 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.875 [2021-11-20 05:44:54,865 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2021-11-20 05:44:54,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2021-11-20 05:44:54,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:54,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2021-11-20 05:44:54,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:54,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:54,871 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:54,871 INFO L186 Difference]: Start difference. First operand has 221 places, 256 transitions, 1540 flow. Second operand 3 states and 399 transitions. [2021-11-20 05:44:54,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 283 transitions, 1936 flow [2021-11-20 05:44:55,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 283 transitions, 1906 flow, removed 13 selfloop flow, removed 2 redundant places. [2021-11-20 05:44:55,045 INFO L242 Difference]: Finished difference. Result has 219 places, 254 transitions, 1501 flow [2021-11-20 05:44:55,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1501, PETRI_PLACES=219, PETRI_TRANSITIONS=254} [2021-11-20 05:44:55,050 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 73 predicate places. [2021-11-20 05:44:55,050 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 254 transitions, 1501 flow [2021-11-20 05:44:55,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:55,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:55,051 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:55,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 05:44:55,053 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:55,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash -2094749176, now seen corresponding path program 9 times [2021-11-20 05:44:55,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:55,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925520101] [2021-11-20 05:44:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:55,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:55,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:55,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925520101] [2021-11-20 05:44:55,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925520101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:55,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:55,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:44:55,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62398636] [2021-11-20 05:44:55,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:55,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:44:55,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:44:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:44:55,383 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:44:55,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 254 transitions, 1501 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:55,386 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:55,386 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:44:55,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:44:57,959 INFO L129 PetriNetUnfolder]: 3550/8820 cut-off events. [2021-11-20 05:44:57,959 INFO L130 PetriNetUnfolder]: For 17811/17987 co-relation queries the response was YES. [2021-11-20 05:44:58,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27878 conditions, 8820 events. 3550/8820 cut-off events. For 17811/17987 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 81545 event pairs, 1644 based on Foata normal form. 25/8596 useless extension candidates. Maximal degree in co-relation 26581. Up to 2623 conditions per place. [2021-11-20 05:44:58,106 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 137 selfloop transitions, 35 changer transitions 7/306 dead transitions. [2021-11-20 05:44:58,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 306 transitions, 2142 flow [2021-11-20 05:44:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:44:58,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-20 05:44:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1123 transitions. [2021-11-20 05:44:58,113 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7388157894736842 [2021-11-20 05:44:58,113 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1123 transitions. [2021-11-20 05:44:58,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1123 transitions. [2021-11-20 05:44:58,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:44:58,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1123 transitions. [2021-11-20 05:44:58,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.3) internal successors, (1123), 10 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:58,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:58,127 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:58,128 INFO L186 Difference]: Start difference. First operand has 219 places, 254 transitions, 1501 flow. Second operand 10 states and 1123 transitions. [2021-11-20 05:44:58,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 306 transitions, 2142 flow [2021-11-20 05:44:58,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 306 transitions, 2138 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-20 05:44:58,349 INFO L242 Difference]: Finished difference. Result has 230 places, 262 transitions, 1697 flow [2021-11-20 05:44:58,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1697, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2021-11-20 05:44:58,351 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 84 predicate places. [2021-11-20 05:44:58,352 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 1697 flow [2021-11-20 05:44:58,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:58,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:44:58,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:44:58,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 05:44:58,355 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:44:58,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:44:58,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1428752856, now seen corresponding path program 10 times [2021-11-20 05:44:58,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:44:58,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122583620] [2021-11-20 05:44:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:44:58,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:44:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:44:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:44:58,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:44:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122583620] [2021-11-20 05:44:58,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122583620] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:44:58,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:44:58,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-20 05:44:58,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672629162] [2021-11-20 05:44:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:44:58,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 05:44:58,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:44:58,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 05:44:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:44:58,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:44:58,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 1697 flow. Second operand has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:44:58,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:44:58,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:44:58,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:45:03,277 INFO L129 PetriNetUnfolder]: 6279/15008 cut-off events. [2021-11-20 05:45:03,277 INFO L130 PetriNetUnfolder]: For 46470/46836 co-relation queries the response was YES. [2021-11-20 05:45:03,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52499 conditions, 15008 events. 6279/15008 cut-off events. For 46470/46836 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 152277 event pairs, 1744 based on Foata normal form. 99/14699 useless extension candidates. Maximal degree in co-relation 49945. Up to 5273 conditions per place. [2021-11-20 05:45:03,790 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 244 selfloop transitions, 114 changer transitions 44/529 dead transitions. [2021-11-20 05:45:03,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 529 transitions, 4263 flow [2021-11-20 05:45:03,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-20 05:45:03,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-11-20 05:45:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2645 transitions. [2021-11-20 05:45:03,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756578947368421 [2021-11-20 05:45:03,804 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2645 transitions. [2021-11-20 05:45:03,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2645 transitions. [2021-11-20 05:45:03,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:45:03,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2645 transitions. [2021-11-20 05:45:03,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 115.0) internal successors, (2645), 23 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:03,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:03,834 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:03,835 INFO L186 Difference]: Start difference. First operand has 230 places, 262 transitions, 1697 flow. Second operand 23 states and 2645 transitions. [2021-11-20 05:45:03,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 529 transitions, 4263 flow [2021-11-20 05:45:04,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 529 transitions, 4154 flow, removed 28 selfloop flow, removed 5 redundant places. [2021-11-20 05:45:04,421 INFO L242 Difference]: Finished difference. Result has 260 places, 337 transitions, 2919 flow [2021-11-20 05:45:04,422 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1638, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2919, PETRI_PLACES=260, PETRI_TRANSITIONS=337} [2021-11-20 05:45:04,423 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 114 predicate places. [2021-11-20 05:45:04,424 INFO L470 AbstractCegarLoop]: Abstraction has has 260 places, 337 transitions, 2919 flow [2021-11-20 05:45:04,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.38461538461539) internal successors, (1383), 13 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:04,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:45:04,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:45:04,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 05:45:04,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:45:04,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:45:04,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1968861216, now seen corresponding path program 11 times [2021-11-20 05:45:04,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:45:04,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39431304] [2021-11-20 05:45:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:45:04,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:45:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:45:04,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:45:04,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:45:04,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39431304] [2021-11-20 05:45:04,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39431304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:45:04,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:45:04,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 05:45:04,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001243365] [2021-11-20 05:45:04,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:45:04,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:45:04,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:45:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:45:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:45:04,862 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:45:04,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 337 transitions, 2919 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:04,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:45:04,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:45:04,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:45:10,202 INFO L129 PetriNetUnfolder]: 6265/16106 cut-off events. [2021-11-20 05:45:10,202 INFO L130 PetriNetUnfolder]: For 89234/89864 co-relation queries the response was YES. [2021-11-20 05:45:10,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 64523 conditions, 16106 events. 6265/16106 cut-off events. For 89234/89864 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 170283 event pairs, 2011 based on Foata normal form. 233/16035 useless extension candidates. Maximal degree in co-relation 60779. Up to 7070 conditions per place. [2021-11-20 05:45:10,520 INFO L132 encePairwiseOnDemand]: 138/152 looper letters, 297 selfloop transitions, 61 changer transitions 19/504 dead transitions. [2021-11-20 05:45:10,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 504 transitions, 5086 flow [2021-11-20 05:45:10,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-20 05:45:10,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-11-20 05:45:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1388 transitions. [2021-11-20 05:45:10,526 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609649122807017 [2021-11-20 05:45:10,527 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1388 transitions. [2021-11-20 05:45:10,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1388 transitions. [2021-11-20 05:45:10,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:45:10,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1388 transitions. [2021-11-20 05:45:10,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.66666666666667) internal successors, (1388), 12 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:10,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:10,542 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:10,542 INFO L186 Difference]: Start difference. First operand has 260 places, 337 transitions, 2919 flow. Second operand 12 states and 1388 transitions. [2021-11-20 05:45:10,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 504 transitions, 5086 flow [2021-11-20 05:45:11,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 504 transitions, 4836 flow, removed 123 selfloop flow, removed 4 redundant places. [2021-11-20 05:45:11,610 INFO L242 Difference]: Finished difference. Result has 272 places, 378 transitions, 3486 flow [2021-11-20 05:45:11,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3486, PETRI_PLACES=272, PETRI_TRANSITIONS=378} [2021-11-20 05:45:11,612 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 126 predicate places. [2021-11-20 05:45:11,612 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 378 transitions, 3486 flow [2021-11-20 05:45:11,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:11,613 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:45:11,613 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:45:11,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 05:45:11,614 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:45:11,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:45:11,615 INFO L85 PathProgramCache]: Analyzing trace with hash -457098568, now seen corresponding path program 12 times [2021-11-20 05:45:11,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:45:11,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375865053] [2021-11-20 05:45:11,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:45:11,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:45:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:45:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:45:11,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:45:11,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375865053] [2021-11-20 05:45:11,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375865053] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:45:11,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:45:11,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-20 05:45:11,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593768662] [2021-11-20 05:45:11,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:45:11,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:45:11,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:45:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:45:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:45:11,858 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:45:11,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 378 transitions, 3486 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:11,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:45:11,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:45:11,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:45:21,676 INFO L129 PetriNetUnfolder]: 12624/29733 cut-off events. [2021-11-20 05:45:21,676 INFO L130 PetriNetUnfolder]: For 181398/182507 co-relation queries the response was YES. [2021-11-20 05:45:22,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123037 conditions, 29733 events. 12624/29733 cut-off events. For 181398/182507 co-relation queries the response was YES. Maximal size of possible extension queue 1431. Compared 330624 event pairs, 2925 based on Foata normal form. 565/29805 useless extension candidates. Maximal degree in co-relation 120366. Up to 5534 conditions per place. [2021-11-20 05:45:22,600 INFO L132 encePairwiseOnDemand]: 133/152 looper letters, 411 selfloop transitions, 159 changer transitions 31/728 dead transitions. [2021-11-20 05:45:22,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 728 transitions, 8086 flow [2021-11-20 05:45:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 05:45:22,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 05:45:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1982 transitions. [2021-11-20 05:45:22,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7670278637770898 [2021-11-20 05:45:22,607 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1982 transitions. [2021-11-20 05:45:22,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1982 transitions. [2021-11-20 05:45:22,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:45:22,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1982 transitions. [2021-11-20 05:45:22,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 116.58823529411765) internal successors, (1982), 17 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:22,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 152.0) internal successors, (2736), 18 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:22,622 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 152.0) internal successors, (2736), 18 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:22,623 INFO L186 Difference]: Start difference. First operand has 272 places, 378 transitions, 3486 flow. Second operand 17 states and 1982 transitions. [2021-11-20 05:45:22,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 728 transitions, 8086 flow [2021-11-20 05:45:25,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 728 transitions, 7846 flow, removed 118 selfloop flow, removed 4 redundant places. [2021-11-20 05:45:25,243 INFO L242 Difference]: Finished difference. Result has 296 places, 480 transitions, 5289 flow [2021-11-20 05:45:25,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3338, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5289, PETRI_PLACES=296, PETRI_TRANSITIONS=480} [2021-11-20 05:45:25,245 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 150 predicate places. [2021-11-20 05:45:25,245 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 480 transitions, 5289 flow [2021-11-20 05:45:25,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:25,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:45:25,246 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:45:25,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 05:45:25,247 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:45:25,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:45:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1243844214, now seen corresponding path program 13 times [2021-11-20 05:45:25,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:45:25,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615588472] [2021-11-20 05:45:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:45:25,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:45:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:45:25,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:45:25,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:45:25,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615588472] [2021-11-20 05:45:25,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615588472] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:45:25,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:45:25,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 05:45:25,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672275809] [2021-11-20 05:45:25,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:45:25,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:45:25,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:45:25,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:45:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:45:25,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:45:25,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 480 transitions, 5289 flow. Second operand has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:25,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:45:25,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:45:25,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:45:38,140 INFO L129 PetriNetUnfolder]: 13395/31587 cut-off events. [2021-11-20 05:45:38,141 INFO L130 PetriNetUnfolder]: For 244458/246209 co-relation queries the response was YES. [2021-11-20 05:45:38,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140841 conditions, 31587 events. 13395/31587 cut-off events. For 244458/246209 co-relation queries the response was YES. Maximal size of possible extension queue 1540. Compared 356995 event pairs, 5739 based on Foata normal form. 331/31007 useless extension candidates. Maximal degree in co-relation 139465. Up to 16232 conditions per place. [2021-11-20 05:45:39,428 INFO L132 encePairwiseOnDemand]: 134/152 looper letters, 389 selfloop transitions, 133 changer transitions 14/663 dead transitions. [2021-11-20 05:45:39,429 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 663 transitions, 8273 flow [2021-11-20 05:45:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:45:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-11-20 05:45:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1611 transitions. [2021-11-20 05:45:39,433 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7570488721804511 [2021-11-20 05:45:39,434 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1611 transitions. [2021-11-20 05:45:39,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1611 transitions. [2021-11-20 05:45:39,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:45:39,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1611 transitions. [2021-11-20 05:45:39,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.07142857142857) internal successors, (1611), 14 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:39,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:39,445 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:39,446 INFO L186 Difference]: Start difference. First operand has 296 places, 480 transitions, 5289 flow. Second operand 14 states and 1611 transitions. [2021-11-20 05:45:39,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 663 transitions, 8273 flow [2021-11-20 05:45:43,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 663 transitions, 7974 flow, removed 146 selfloop flow, removed 3 redundant places. [2021-11-20 05:45:43,833 INFO L242 Difference]: Finished difference. Result has 315 places, 546 transitions, 6507 flow [2021-11-20 05:45:43,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5036, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6507, PETRI_PLACES=315, PETRI_TRANSITIONS=546} [2021-11-20 05:45:43,835 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 169 predicate places. [2021-11-20 05:45:43,835 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 546 transitions, 6507 flow [2021-11-20 05:45:43,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:43,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:45:43,837 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:45:43,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 05:45:43,838 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:45:43,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:45:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 672502476, now seen corresponding path program 14 times [2021-11-20 05:45:43,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:45:43,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113580940] [2021-11-20 05:45:43,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:45:43,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 05:45:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:45:44,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:45:44,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 05:45:44,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113580940] [2021-11-20 05:45:44,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113580940] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 05:45:44,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:45:44,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 05:45:44,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311545289] [2021-11-20 05:45:44,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 05:45:44,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:45:44,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 05:45:44,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:45:44,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:45:44,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2021-11-20 05:45:44,278 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 546 transitions, 6507 flow. Second operand has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:44,278 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 05:45:44,278 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2021-11-20 05:45:44,278 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 05:45:58,529 INFO L129 PetriNetUnfolder]: 13740/32164 cut-off events. [2021-11-20 05:45:58,529 INFO L130 PetriNetUnfolder]: For 285481/287431 co-relation queries the response was YES. [2021-11-20 05:45:59,178 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148446 conditions, 32164 events. 13740/32164 cut-off events. For 285481/287431 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 363254 event pairs, 6317 based on Foata normal form. 413/31597 useless extension candidates. Maximal degree in co-relation 146995. Up to 17730 conditions per place. [2021-11-20 05:45:59,348 INFO L132 encePairwiseOnDemand]: 133/152 looper letters, 397 selfloop transitions, 146 changer transitions 40/710 dead transitions. [2021-11-20 05:45:59,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 710 transitions, 9404 flow [2021-11-20 05:45:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 05:45:59,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-11-20 05:45:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1716 transitions. [2021-11-20 05:45:59,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7526315789473684 [2021-11-20 05:45:59,354 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1716 transitions. [2021-11-20 05:45:59,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1716 transitions. [2021-11-20 05:45:59,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 05:45:59,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1716 transitions. [2021-11-20 05:45:59,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 114.4) internal successors, (1716), 15 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:59,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:59,366 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:45:59,366 INFO L186 Difference]: Start difference. First operand has 315 places, 546 transitions, 6507 flow. Second operand 15 states and 1716 transitions. [2021-11-20 05:45:59,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 710 transitions, 9404 flow [2021-11-20 05:46:03,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 710 transitions, 9240 flow, removed 80 selfloop flow, removed 3 redundant places. [2021-11-20 05:46:03,629 INFO L242 Difference]: Finished difference. Result has 335 places, 580 transitions, 7316 flow [2021-11-20 05:46:03,630 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=6351, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7316, PETRI_PLACES=335, PETRI_TRANSITIONS=580} [2021-11-20 05:46:03,631 INFO L334 CegarLoopForPetriNet]: 146 programPoint places, 189 predicate places. [2021-11-20 05:46:03,631 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 580 transitions, 7316 flow [2021-11-20 05:46:03,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 106.14285714285714) internal successors, (1486), 14 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 05:46:03,632 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 05:46:03,633 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:46:03,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 05:46:03,633 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-20 05:46:03,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:46:03,634 INFO L85 PathProgramCache]: Analyzing trace with hash -327965290, now seen corresponding path program 15 times [2021-11-20 05:46:03,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 05:46:03,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086005363] [2021-11-20 05:46:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:46:03,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms