./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G --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 e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:09:53,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:09:53,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:09:53,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:09:53,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:09:53,509 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:09:53,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:09:53,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:09:53,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:09:53,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:09:53,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:09:53,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:09:53,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:09:53,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:09:53,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:09:53,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:09:53,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:09:53,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:09:53,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:09:53,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:09:53,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:09:53,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:09:53,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:09:53,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:09:53,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:09:53,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:09:53,582 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:09:53,585 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:09:53,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:09:53,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:09:53,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:09:53,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:09:53,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:09:53,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:09:53,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:09:53,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:09:53,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:09:53,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:09:53,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:09:53,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:09:53,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:09:53,599 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:09:53,642 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:09:53,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:09:53,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:09:53,644 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:09:53,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:09:53,646 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:09:53,646 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:09:53,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:09:53,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:09:53,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:09:53,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:09:53,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:09:53,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:09:53,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:09:53,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:09:53,649 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:09:53,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:09:53,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:09:53,650 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:09:53,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:09:53,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:09:53,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:09:53,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:53,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:09:53,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:09:53,651 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:09:53,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:09:53,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:09:53,652 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:09:53,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:09:53,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:09:53,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:09:53,655 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_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce [2021-11-23 13:09:53,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:09:54,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:09:54,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:09:54,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:09:54,029 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:09:54,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-23 13:09:54,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/data/3a23b9f67/b8a217d22d62489bb9ba2e0d9d2be5d4/FLAG05a32fc16 [2021-11-23 13:09:54,746 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:09:54,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-23 13:09:54,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/data/3a23b9f67/b8a217d22d62489bb9ba2e0d9d2be5d4/FLAG05a32fc16 [2021-11-23 13:09:54,998 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/data/3a23b9f67/b8a217d22d62489bb9ba2e0d9d2be5d4 [2021-11-23 13:09:55,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:09:55,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:09:55,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:55,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:09:55,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:09:55,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:54" (1/1) ... [2021-11-23 13:09:55,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5776392f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55, skipping insertion in model container [2021-11-23 13:09:55,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:09:54" (1/1) ... [2021-11-23 13:09:55,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:09:55,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:09:55,291 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_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-23 13:09:55,454 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:55,470 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:09:55,489 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_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/sv-benchmarks/c/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2021-11-23 13:09:55,555 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:09:55,602 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:09:55,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55 WrapperNode [2021-11-23 13:09:55,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:09:55,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:55,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:09:55,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:09:55,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,632 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,674 INFO L137 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-11-23 13:09:55,674 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:09:55,675 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:09:55,675 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:09:55,675 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:09:55,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:09:55,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:09:55,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:09:55,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:09:55,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (1/1) ... [2021-11-23 13:09:55,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:09:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:09:55,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:09:55,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:09:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:09:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 13:09:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:09:55,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:09:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:09:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-11-23 13:09:55,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-11-23 13:09:55,803 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-11-23 13:09:55,803 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-11-23 13:09:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-11-23 13:09:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-11-23 13:09:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:09:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 13:09:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:09:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:09:55,812 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-23 13:09:55,944 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:09:55,946 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:09:56,125 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:09:56,133 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:09:56,134 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 13:09:56,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:56 BoogieIcfgContainer [2021-11-23 13:09:56,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:09:56,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:09:56,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:09:56,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:09:56,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:09:54" (1/3) ... [2021-11-23 13:09:56,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30883ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:56, skipping insertion in model container [2021-11-23 13:09:56,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:09:55" (2/3) ... [2021-11-23 13:09:56,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30883ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:09:56, skipping insertion in model container [2021-11-23 13:09:56,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:56" (3/3) ... [2021-11-23 13:09:56,161 INFO L111 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2021-11-23 13:09:56,166 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-23 13:09:56,167 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:09:56,167 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:09:56,167 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-23 13:09:56,241 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,242 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,242 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,242 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,242 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,243 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,243 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,243 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,243 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,244 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,244 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,244 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,245 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,245 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,245 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,245 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,245 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,246 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,246 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,246 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,247 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,248 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,248 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,248 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,248 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,248 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,249 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,249 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,249 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,249 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,250 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,250 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,250 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,261 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,261 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,262 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,262 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,266 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,268 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,268 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,270 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,271 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,273 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,274 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,275 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-23 13:09:56,276 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-11-23 13:09:56,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:09:56,362 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 [2021-11-23 13:09:56,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-23 13:09:56,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 195 flow [2021-11-23 13:09:56,520 INFO L129 PetriNetUnfolder]: 2/87 cut-off events. [2021-11-23 13:09:56,520 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 13:09:56,524 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/84 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2021-11-23 13:09:56,525 INFO L82 GeneralOperation]: Start removeDead. Operand has 98 places, 90 transitions, 195 flow [2021-11-23 13:09:56,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2021-11-23 13:09:56,581 INFO L129 PetriNetUnfolder]: 1/72 cut-off events. [2021-11-23 13:09:56,588 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-23 13:09:56,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:09:56,590 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] [2021-11-23 13:09:56,590 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:09:56,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:56,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1346493370, now seen corresponding path program 1 times [2021-11-23 13:09:56,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:56,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069300504] [2021-11-23 13:09:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:56,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:56,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:57,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:57,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069300504] [2021-11-23 13:09:57,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069300504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:57,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:57,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:09:57,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435398223] [2021-11-23 13:09:57,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:57,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:09:57,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:09:57,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:09:57,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2021-11-23 13:09:57,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:09:57,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2021-11-23 13:09:57,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:09:57,572 INFO L129 PetriNetUnfolder]: 185/609 cut-off events. [2021-11-23 13:09:57,572 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-11-23 13:09:57,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 609 events. 185/609 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3553 event pairs, 44 based on Foata normal form. 21/615 useless extension candidates. Maximal degree in co-relation 941. Up to 155 conditions per place. [2021-11-23 13:09:57,586 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 20 selfloop transitions, 5 changer transitions 28/109 dead transitions. [2021-11-23 13:09:57,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 109 transitions, 339 flow [2021-11-23 13:09:57,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:09:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 13:09:57,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2021-11-23 13:09:57,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8481481481481481 [2021-11-23 13:09:57,618 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 687 transitions. [2021-11-23 13:09:57,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 687 transitions. [2021-11-23 13:09:57,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:09:57,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 687 transitions. [2021-11-23 13:09:57,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.33333333333333) internal successors, (687), 9 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,658 INFO L186 Difference]: Start difference. First operand has 82 places, 73 transitions, 155 flow. Second operand 9 states and 687 transitions. [2021-11-23 13:09:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 109 transitions, 339 flow [2021-11-23 13:09:57,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 109 transitions, 334 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-11-23 13:09:57,668 INFO L242 Difference]: Finished difference. Result has 94 places, 75 transitions, 209 flow [2021-11-23 13:09:57,670 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=209, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2021-11-23 13:09:57,674 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2021-11-23 13:09:57,674 INFO L470 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 209 flow [2021-11-23 13:09:57,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.0) internal successors, (432), 6 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,675 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:09:57,675 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] [2021-11-23 13:09:57,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:09:57,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:09:57,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:57,677 INFO L85 PathProgramCache]: Analyzing trace with hash -185193977, now seen corresponding path program 1 times [2021-11-23 13:09:57,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:57,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413173883] [2021-11-23 13:09:57,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:57,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:57,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:57,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413173883] [2021-11-23 13:09:57,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413173883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:57,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:57,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:09:57,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085770021] [2021-11-23 13:09:57,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:57,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:09:57,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:57,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:09:57,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:09:57,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2021-11-23 13:09:57,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 209 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:57,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:09:57,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2021-11-23 13:09:57,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:09:58,246 INFO L129 PetriNetUnfolder]: 123/409 cut-off events. [2021-11-23 13:09:58,246 INFO L130 PetriNetUnfolder]: For 655/723 co-relation queries the response was YES. [2021-11-23 13:09:58,248 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 409 events. 123/409 cut-off events. For 655/723 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1935 event pairs, 7 based on Foata normal form. 13/408 useless extension candidates. Maximal degree in co-relation 1160. Up to 121 conditions per place. [2021-11-23 13:09:58,252 INFO L132 encePairwiseOnDemand]: 80/90 looper letters, 22 selfloop transitions, 7 changer transitions 34/119 dead transitions. [2021-11-23 13:09:58,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 634 flow [2021-11-23 13:09:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:09:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-11-23 13:09:58,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 973 transitions. [2021-11-23 13:09:58,258 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8316239316239317 [2021-11-23 13:09:58,258 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 973 transitions. [2021-11-23 13:09:58,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 973 transitions. [2021-11-23 13:09:58,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:09:58,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 973 transitions. [2021-11-23 13:09:58,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.84615384615384) internal successors, (973), 13 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,270 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 90.0) internal successors, (1260), 14 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,270 INFO L186 Difference]: Start difference. First operand has 94 places, 75 transitions, 209 flow. Second operand 13 states and 973 transitions. [2021-11-23 13:09:58,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 634 flow [2021-11-23 13:09:58,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 119 transitions, 594 flow, removed 12 selfloop flow, removed 4 redundant places. [2021-11-23 13:09:58,279 INFO L242 Difference]: Finished difference. Result has 107 places, 77 transitions, 264 flow [2021-11-23 13:09:58,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=264, PETRI_PLACES=107, PETRI_TRANSITIONS=77} [2021-11-23 13:09:58,280 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 25 predicate places. [2021-11-23 13:09:58,280 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 77 transitions, 264 flow [2021-11-23 13:09:58,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:09:58,282 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] [2021-11-23 13:09:58,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:09:58,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:09:58,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:58,283 INFO L85 PathProgramCache]: Analyzing trace with hash -692916785, now seen corresponding path program 1 times [2021-11-23 13:09:58,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:58,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980013050] [2021-11-23 13:09:58,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:58,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:58,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:58,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980013050] [2021-11-23 13:09:58,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980013050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:58,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:58,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:09:58,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250215142] [2021-11-23 13:09:58,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:58,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:09:58,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:58,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:09:58,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:09:58,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-11-23 13:09:58,475 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 77 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:58,475 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:09:58,475 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-11-23 13:09:58,475 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:09:58,970 INFO L129 PetriNetUnfolder]: 258/837 cut-off events. [2021-11-23 13:09:58,970 INFO L130 PetriNetUnfolder]: For 2164/2320 co-relation queries the response was YES. [2021-11-23 13:09:58,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2468 conditions, 837 events. 258/837 cut-off events. For 2164/2320 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5302 event pairs, 2 based on Foata normal form. 22/842 useless extension candidates. Maximal degree in co-relation 2414. Up to 160 conditions per place. [2021-11-23 13:09:58,983 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 36 selfloop transitions, 15 changer transitions 59/164 dead transitions. [2021-11-23 13:09:58,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 164 transitions, 1128 flow [2021-11-23 13:09:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 13:09:58,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-23 13:09:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1256 transitions. [2021-11-23 13:09:58,990 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8209150326797385 [2021-11-23 13:09:58,991 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1256 transitions. [2021-11-23 13:09:58,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1256 transitions. [2021-11-23 13:09:58,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:09:58,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1256 transitions. [2021-11-23 13:09:58,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.88235294117646) internal successors, (1256), 17 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,003 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 90.0) internal successors, (1620), 18 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,003 INFO L186 Difference]: Start difference. First operand has 107 places, 77 transitions, 264 flow. Second operand 17 states and 1256 transitions. [2021-11-23 13:09:59,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 164 transitions, 1128 flow [2021-11-23 13:09:59,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 164 transitions, 972 flow, removed 60 selfloop flow, removed 8 redundant places. [2021-11-23 13:09:59,025 INFO L242 Difference]: Finished difference. Result has 122 places, 85 transitions, 428 flow [2021-11-23 13:09:59,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=428, PETRI_PLACES=122, PETRI_TRANSITIONS=85} [2021-11-23 13:09:59,028 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 40 predicate places. [2021-11-23 13:09:59,029 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 85 transitions, 428 flow [2021-11-23 13:09:59,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.0) internal successors, (490), 7 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,030 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:09:59,030 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] [2021-11-23 13:09:59,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:09:59,033 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:09:59,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:59,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1845828484, now seen corresponding path program 1 times [2021-11-23 13:09:59,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713660164] [2021-11-23 13:09:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:59,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:59,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713660164] [2021-11-23 13:09:59,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713660164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:59,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:59,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:09:59,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70945847] [2021-11-23 13:09:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:59,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:59,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:59,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:59,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:59,234 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 90 [2021-11-23 13:09:59,235 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 85 transitions, 428 flow. Second operand has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,235 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:09:59,235 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 90 [2021-11-23 13:09:59,235 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:09:59,550 INFO L129 PetriNetUnfolder]: 132/522 cut-off events. [2021-11-23 13:09:59,551 INFO L130 PetriNetUnfolder]: For 3719/4153 co-relation queries the response was YES. [2021-11-23 13:09:59,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 522 events. 132/522 cut-off events. For 3719/4153 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2870 event pairs, 13 based on Foata normal form. 17/514 useless extension candidates. Maximal degree in co-relation 2042. Up to 96 conditions per place. [2021-11-23 13:09:59,557 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 24 selfloop transitions, 7 changer transitions 51/136 dead transitions. [2021-11-23 13:09:59,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 136 transitions, 1208 flow [2021-11-23 13:09:59,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:09:59,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-23 13:09:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 808 transitions. [2021-11-23 13:09:59,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8161616161616162 [2021-11-23 13:09:59,561 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 808 transitions. [2021-11-23 13:09:59,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 808 transitions. [2021-11-23 13:09:59,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:09:59,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 808 transitions. [2021-11-23 13:09:59,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.45454545454545) internal successors, (808), 11 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,571 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,571 INFO L186 Difference]: Start difference. First operand has 122 places, 85 transitions, 428 flow. Second operand 11 states and 808 transitions. [2021-11-23 13:09:59,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 136 transitions, 1208 flow [2021-11-23 13:09:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 136 transitions, 968 flow, removed 120 selfloop flow, removed 12 redundant places. [2021-11-23 13:09:59,595 INFO L242 Difference]: Finished difference. Result has 116 places, 75 transitions, 290 flow [2021-11-23 13:09:59,595 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=290, PETRI_PLACES=116, PETRI_TRANSITIONS=75} [2021-11-23 13:09:59,597 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 34 predicate places. [2021-11-23 13:09:59,597 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 75 transitions, 290 flow [2021-11-23 13:09:59,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 69.875) internal successors, (559), 8 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,598 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:09:59,598 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] [2021-11-23 13:09:59,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:09:59,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:09:59,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:09:59,600 INFO L85 PathProgramCache]: Analyzing trace with hash 395553628, now seen corresponding path program 1 times [2021-11-23 13:09:59,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:09:59,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455608063] [2021-11-23 13:09:59,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:09:59,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:09:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:09:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:09:59,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:09:59,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455608063] [2021-11-23 13:09:59,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455608063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:09:59,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:09:59,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:09:59,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708578199] [2021-11-23 13:09:59,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:09:59,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:09:59,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:09:59,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:09:59,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:09:59,820 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 90 [2021-11-23 13:09:59,821 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 75 transitions, 290 flow. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:09:59,821 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:09:59,821 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 90 [2021-11-23 13:09:59,821 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:09:59,989 INFO L129 PetriNetUnfolder]: 23/174 cut-off events. [2021-11-23 13:09:59,989 INFO L130 PetriNetUnfolder]: For 606/706 co-relation queries the response was YES. [2021-11-23 13:09:59,990 INFO L84 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 174 events. 23/174 cut-off events. For 606/706 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 541 event pairs, 3 based on Foata normal form. 6/175 useless extension candidates. Maximal degree in co-relation 561. Up to 25 conditions per place. [2021-11-23 13:09:59,991 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 15 selfloop transitions, 5 changer transitions 29/104 dead transitions. [2021-11-23 13:09:59,991 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 104 transitions, 686 flow [2021-11-23 13:09:59,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:09:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-23 13:09:59,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 819 transitions. [2021-11-23 13:09:59,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8272727272727273 [2021-11-23 13:09:59,995 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 819 transitions. [2021-11-23 13:09:59,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 819 transitions. [2021-11-23 13:09:59,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:09:59,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 819 transitions. [2021-11-23 13:10:00,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 74.45454545454545) internal successors, (819), 11 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,005 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,005 INFO L186 Difference]: Start difference. First operand has 116 places, 75 transitions, 290 flow. Second operand 11 states and 819 transitions. [2021-11-23 13:10:00,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 104 transitions, 686 flow [2021-11-23 13:10:00,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 104 transitions, 446 flow, removed 49 selfloop flow, removed 20 redundant places. [2021-11-23 13:10:00,012 INFO L242 Difference]: Finished difference. Result has 108 places, 71 transitions, 214 flow [2021-11-23 13:10:00,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=214, PETRI_PLACES=108, PETRI_TRANSITIONS=71} [2021-11-23 13:10:00,016 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 26 predicate places. [2021-11-23 13:10:00,016 INFO L470 AbstractCegarLoop]: Abstraction has has 108 places, 71 transitions, 214 flow [2021-11-23 13:10:00,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,017 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:10:00,017 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] [2021-11-23 13:10:00,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:10:00,017 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:10:00,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1472816389, now seen corresponding path program 1 times [2021-11-23 13:10:00,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:00,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792712379] [2021-11-23 13:10:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:00,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:00,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:00,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:00,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792712379] [2021-11-23 13:10:00,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792712379] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:00,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:00,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:10:00,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122182171] [2021-11-23 13:10:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:10:00,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:10:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:10:00,179 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-11-23 13:10:00,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 71 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:10:00,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-11-23 13:10:00,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:10:00,325 INFO L129 PetriNetUnfolder]: 93/305 cut-off events. [2021-11-23 13:10:00,325 INFO L130 PetriNetUnfolder]: For 65/69 co-relation queries the response was YES. [2021-11-23 13:10:00,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 305 events. 93/305 cut-off events. For 65/69 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1441 event pairs, 2 based on Foata normal form. 8/307 useless extension candidates. Maximal degree in co-relation 551. Up to 86 conditions per place. [2021-11-23 13:10:00,328 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 12 selfloop transitions, 5 changer transitions 21/96 dead transitions. [2021-11-23 13:10:00,328 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 96 transitions, 340 flow [2021-11-23 13:10:00,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:10:00,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-11-23 13:10:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 697 transitions. [2021-11-23 13:10:00,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8604938271604938 [2021-11-23 13:10:00,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 697 transitions. [2021-11-23 13:10:00,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 697 transitions. [2021-11-23 13:10:00,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:10:00,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 697 transitions. [2021-11-23 13:10:00,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.44444444444444) internal successors, (697), 9 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,338 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 90.0) internal successors, (900), 10 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,339 INFO L186 Difference]: Start difference. First operand has 108 places, 71 transitions, 214 flow. Second operand 9 states and 697 transitions. [2021-11-23 13:10:00,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 96 transitions, 340 flow [2021-11-23 13:10:00,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 96 transitions, 302 flow, removed 13 selfloop flow, removed 14 redundant places. [2021-11-23 13:10:00,343 INFO L242 Difference]: Finished difference. Result has 101 places, 73 transitions, 226 flow [2021-11-23 13:10:00,343 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=226, PETRI_PLACES=101, PETRI_TRANSITIONS=73} [2021-11-23 13:10:00,344 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 19 predicate places. [2021-11-23 13:10:00,344 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 73 transitions, 226 flow [2021-11-23 13:10:00,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.66666666666667) internal successors, (448), 6 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,344 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:10:00,345 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] [2021-11-23 13:10:00,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:10:00,345 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:10:00,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:00,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1061759769, now seen corresponding path program 1 times [2021-11-23 13:10:00,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:00,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283851256] [2021-11-23 13:10:00,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:00,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:00,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:00,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283851256] [2021-11-23 13:10:00,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283851256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:00,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:00,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:10:00,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019777220] [2021-11-23 13:10:00,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:00,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:10:00,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:00,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:10:00,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:10:00,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-11-23 13:10:00,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 73 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:10:00,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-11-23 13:10:00,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:10:00,596 INFO L129 PetriNetUnfolder]: 42/189 cut-off events. [2021-11-23 13:10:00,596 INFO L130 PetriNetUnfolder]: For 253/277 co-relation queries the response was YES. [2021-11-23 13:10:00,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 189 events. 42/189 cut-off events. For 253/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 662 event pairs, 0 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 527. Up to 64 conditions per place. [2021-11-23 13:10:00,598 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 8 selfloop transitions, 7 changer transitions 25/98 dead transitions. [2021-11-23 13:10:00,598 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 98 transitions, 483 flow [2021-11-23 13:10:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 13:10:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-11-23 13:10:00,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 772 transitions. [2021-11-23 13:10:00,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8577777777777778 [2021-11-23 13:10:00,602 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 772 transitions. [2021-11-23 13:10:00,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 772 transitions. [2021-11-23 13:10:00,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:10:00,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 772 transitions. [2021-11-23 13:10:00,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.2) internal successors, (772), 10 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 90.0) internal successors, (990), 11 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,610 INFO L186 Difference]: Start difference. First operand has 101 places, 73 transitions, 226 flow. Second operand 10 states and 772 transitions. [2021-11-23 13:10:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 98 transitions, 483 flow [2021-11-23 13:10:00,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 454 flow, removed 8 selfloop flow, removed 6 redundant places. [2021-11-23 13:10:00,614 INFO L242 Difference]: Finished difference. Result has 106 places, 73 transitions, 246 flow [2021-11-23 13:10:00,615 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=106, PETRI_TRANSITIONS=73} [2021-11-23 13:10:00,615 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 24 predicate places. [2021-11-23 13:10:00,616 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 73 transitions, 246 flow [2021-11-23 13:10:00,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.57142857142857) internal successors, (522), 7 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,616 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-23 13:10:00,617 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] [2021-11-23 13:10:00,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:10:00,617 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-23 13:10:00,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:10:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 849783870, now seen corresponding path program 1 times [2021-11-23 13:10:00,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:10:00,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370687992] [2021-11-23 13:10:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:10:00,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:10:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:10:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:10:00,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:10:00,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370687992] [2021-11-23 13:10:00,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370687992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:10:00,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:10:00,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:10:00,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97923077] [2021-11-23 13:10:00,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:10:00,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:10:00,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:10:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:10:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:10:00,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 90 [2021-11-23 13:10:00,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 73 transitions, 246 flow. Second operand has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-23 13:10:00,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 90 [2021-11-23 13:10:00,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-23 13:10:00,867 INFO L129 PetriNetUnfolder]: 4/82 cut-off events. [2021-11-23 13:10:00,867 INFO L130 PetriNetUnfolder]: For 178/195 co-relation queries the response was YES. [2021-11-23 13:10:00,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 82 events. 4/82 cut-off events. For 178/195 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 6/88 useless extension candidates. Maximal degree in co-relation 197. Up to 13 conditions per place. [2021-11-23 13:10:00,868 INFO L132 encePairwiseOnDemand]: 81/90 looper letters, 0 selfloop transitions, 0 changer transitions 75/75 dead transitions. [2021-11-23 13:10:00,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 75 transitions, 346 flow [2021-11-23 13:10:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:10:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-11-23 13:10:00,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 829 transitions. [2021-11-23 13:10:00,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8373737373737373 [2021-11-23 13:10:00,872 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 829 transitions. [2021-11-23 13:10:00,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 829 transitions. [2021-11-23 13:10:00,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-23 13:10:00,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 829 transitions. [2021-11-23 13:10:00,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 75.36363636363636) internal successors, (829), 11 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,879 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 90.0) internal successors, (1080), 12 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,879 INFO L186 Difference]: Start difference. First operand has 106 places, 73 transitions, 246 flow. Second operand 11 states and 829 transitions. [2021-11-23 13:10:00,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 75 transitions, 346 flow [2021-11-23 13:10:00,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 75 transitions, 282 flow, removed 23 selfloop flow, removed 10 redundant places. [2021-11-23 13:10:00,882 INFO L242 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2021-11-23 13:10:00,883 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2021-11-23 13:10:00,883 INFO L334 CegarLoopForPetriNet]: 82 programPoint places, 13 predicate places. [2021-11-23 13:10:00,884 INFO L470 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2021-11-23 13:10:00,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 74.5) internal successors, (596), 8 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:10:00,887 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-23 13:10:00,887 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-23 13:10:00,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-23 13:10:00,888 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-23 13:10:00,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:10:00,892 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:10:00,895 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-23 13:10:00,895 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:10:00,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:10:00 BasicIcfg [2021-11-23 13:10:00,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:10:00,900 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:10:00,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:10:00,900 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:10:00,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:09:56" (3/4) ... [2021-11-23 13:10:00,903 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 13:10:00,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-11-23 13:10:00,910 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-11-23 13:10:00,911 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-11-23 13:10:00,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-23 13:10:00,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-23 13:10:00,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 13:10:00,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 13:10:00,951 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:10:00,951 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:10:00,952 INFO L158 Benchmark]: Toolchain (without parser) took 5948.48ms. Allocated memory was 94.4MB in the beginning and 138.4MB in the end (delta: 44.0MB). Free memory was 62.3MB in the beginning and 37.2MB in the end (delta: 25.1MB). Peak memory consumption was 68.0MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,952 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:10:00,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 593.46ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 81.5MB in the end (delta: -19.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.04ms. Allocated memory is still 115.3MB. Free memory was 81.1MB in the beginning and 79.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,953 INFO L158 Benchmark]: Boogie Preprocessor took 46.03ms. Allocated memory is still 115.3MB. Free memory was 79.3MB in the beginning and 77.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,954 INFO L158 Benchmark]: RCFGBuilder took 414.86ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 66.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,954 INFO L158 Benchmark]: TraceAbstraction took 4760.85ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 40.4MB in the end (delta: 25.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,955 INFO L158 Benchmark]: Witness Printer took 51.53ms. Allocated memory is still 138.4MB. Free memory was 40.4MB in the beginning and 37.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:10:00,957 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 94.4MB. Free memory is still 47.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 593.46ms. Allocated memory was 94.4MB in the beginning and 115.3MB in the end (delta: 21.0MB). Free memory was 62.1MB in the beginning and 81.5MB in the end (delta: -19.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.04ms. Allocated memory is still 115.3MB. Free memory was 81.1MB in the beginning and 79.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.03ms. Allocated memory is still 115.3MB. Free memory was 79.3MB in the beginning and 77.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 414.86ms. Allocated memory is still 115.3MB. Free memory was 77.7MB in the beginning and 66.0MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4760.85ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 65.6MB in the beginning and 40.4MB in the end (delta: 25.2MB). Peak memory consumption was 49.8MB. Max. memory is 16.1GB. * Witness Printer took 51.53ms. Allocated memory is still 138.4MB. Free memory was 40.4MB in the beginning and 37.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 112 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 351 mSDsluCounter, 480 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 461 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 484 IncrementalHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 118 mSDtfsCounter, 484 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=428occurred in iteration=3, InterpolantAutomatonStates: 91, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 469 NumberOfCodeBlocks, 469 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 461 ConstructedInterpolants, 0 QuantifiedInterpolants, 2305 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-23 13:10:01,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_84552fa2-f9f1-4750-bcfe-a8fc53c7e60d/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE