./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:58:52,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:52,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:52,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:52,714 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:52,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:52,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:52,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:52,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:52,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:52,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:52,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:52,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:52,740 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:52,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:52,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:52,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:52,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:52,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:52,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:52,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:52,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:52,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:52,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:52,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:52,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:52,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:52,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:52,779 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:52,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:52,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:52,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:52,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:52,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:52,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:52,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:52,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:52,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:52,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:52,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:52,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:52,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:58:52,846 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:52,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:52,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:52,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:52,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:52,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:52,854 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:52,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:52,855 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:52,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:52,856 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:58:52,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:58:52,856 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:58:52,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:52,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:52,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:52,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:52,857 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:58:52,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:52,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:52,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:52,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:52,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:52,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:52,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:52,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:52,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:52,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:52,859 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:58:52,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:58:52,860 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:52,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:52,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:52,861 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_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2022-10-17 10:58:53,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:53,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:53,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:53,217 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:53,218 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:53,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2022-10-17 10:58:53,289 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/data/a0a754a0a/809a66b2ca2441cdbf2850fa464e94d5/FLAG1d9a77682 [2022-10-17 10:58:53,950 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:53,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2022-10-17 10:58:53,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/data/a0a754a0a/809a66b2ca2441cdbf2850fa464e94d5/FLAG1d9a77682 [2022-10-17 10:58:54,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/data/a0a754a0a/809a66b2ca2441cdbf2850fa464e94d5 [2022-10-17 10:58:54,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:54,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:54,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:54,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:54,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:54,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:54,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7061246d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54, skipping insertion in model container [2022-10-17 10:58:54,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:54,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:54,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:54,513 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_e2924bfd-d82d-4d21-a474-75ff3af83ea1/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i[949,962] [2022-10-17 10:58:54,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:54,753 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:54,776 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_e2924bfd-d82d-4d21-a474-75ff3af83ea1/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i[949,962] [2022-10-17 10:58:54,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:54,944 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:54,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54 WrapperNode [2022-10-17 10:58:54,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:54,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:54,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:54,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:54,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,078 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 629 [2022-10-17 10:58:55,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:55,079 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:55,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:55,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:55,093 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,174 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:55,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:55,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:55,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:55,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (1/1) ... [2022-10-17 10:58:55,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:55,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:55,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2924bfd-d82d-4d21-a474-75ff3af83ea1/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:58:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:58:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:55,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:58:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:58:55,273 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:58:55,273 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:58:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:58:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:58:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:58:55,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:58:55,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:58:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:58:55,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:55,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:55,277 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:58:55,470 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:55,472 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:56,797 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:57,839 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:57,839 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:58:57,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:57 BoogieIcfgContainer [2022-10-17 10:58:57,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:57,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:57,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:57,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:57,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:54" (1/3) ... [2022-10-17 10:58:57,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f229adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:57, skipping insertion in model container [2022-10-17 10:58:57,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:54" (2/3) ... [2022-10-17 10:58:57,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f229adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:57, skipping insertion in model container [2022-10-17 10:58:57,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:57" (3/3) ... [2022-10-17 10:58:57,853 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2022-10-17 10:58:57,863 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:58:57,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:57,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-10-17 10:58:57,874 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:58:58,013 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:58:58,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 159 transitions, 338 flow [2022-10-17 10:58:58,144 INFO L130 PetriNetUnfolder]: 2/155 cut-off events. [2022-10-17 10:58:58,144 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:58:58,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 155 events. 2/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2022-10-17 10:58:58,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 159 transitions, 338 flow [2022-10-17 10:58:58,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 155 transitions, 322 flow [2022-10-17 10:58:58,174 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:58,183 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59e24f03, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:58,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-10-17 10:58:58,214 INFO L130 PetriNetUnfolder]: 0/84 cut-off events. [2022-10-17 10:58:58,214 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:58:58,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:58:58,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:58,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:58:58,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1728742666, now seen corresponding path program 1 times [2022-10-17 10:58:58,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:58,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803413016] [2022-10-17 10:58:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:58,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:58:59,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:59,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803413016] [2022-10-17 10:58:59,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803413016] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:59,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:59,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:58:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113248022] [2022-10-17 10:58:59,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:59,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:58:59,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:59,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:58:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:58:59,079 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 159 [2022-10-17 10:58:59,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 155 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:58:59,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:58:59,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 159 [2022-10-17 10:58:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:00,150 INFO L130 PetriNetUnfolder]: 629/1600 cut-off events. [2022-10-17 10:59:00,151 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-10-17 10:59:00,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2634 conditions, 1600 events. 629/1600 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 10763 event pairs, 81 based on Foata normal form. 81/1523 useless extension candidates. Maximal degree in co-relation 2557. Up to 781 conditions per place. [2022-10-17 10:59:00,183 INFO L137 encePairwiseOnDemand]: 154/159 looper letters, 23 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2022-10-17 10:59:00,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 160 transitions, 388 flow [2022-10-17 10:59:00,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:00,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:59:00,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2022-10-17 10:59:00,207 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9371069182389937 [2022-10-17 10:59:00,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2022-10-17 10:59:00,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2022-10-17 10:59:00,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:00,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2022-10-17 10:59:00,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:00,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:00,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:00,236 INFO L175 Difference]: Start difference. First operand has 166 places, 155 transitions, 322 flow. Second operand 3 states and 447 transitions. [2022-10-17 10:59:00,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 160 transitions, 388 flow [2022-10-17 10:59:00,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 160 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:59:00,252 INFO L231 Difference]: Finished difference. Result has 162 places, 151 transitions, 314 flow [2022-10-17 10:59:00,254 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=162, PETRI_TRANSITIONS=151} [2022-10-17 10:59:00,261 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, -4 predicate places. [2022-10-17 10:59:00,262 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 151 transitions, 314 flow [2022-10-17 10:59:00,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:00,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:00,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:00,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:59:00,264 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2056891755, now seen corresponding path program 1 times [2022-10-17 10:59:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207983127] [2022-10-17 10:59:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:00,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:00,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:00,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207983127] [2022-10-17 10:59:00,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207983127] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:00,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:00,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:59:00,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513715663] [2022-10-17 10:59:00,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:00,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:59:00,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:00,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:59:00,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:59:00,561 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 159 [2022-10-17 10:59:00,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 151 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:00,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:00,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 159 [2022-10-17 10:59:00,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:01,379 INFO L130 PetriNetUnfolder]: 458/2451 cut-off events. [2022-10-17 10:59:01,379 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-10-17 10:59:01,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3266 conditions, 2451 events. 458/2451 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21887 event pairs, 216 based on Foata normal form. 0/2306 useless extension candidates. Maximal degree in co-relation 3191. Up to 483 conditions per place. [2022-10-17 10:59:01,405 INFO L137 encePairwiseOnDemand]: 156/159 looper letters, 22 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2022-10-17 10:59:01,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 159 transitions, 382 flow [2022-10-17 10:59:01,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:59:01,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:59:01,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2022-10-17 10:59:01,409 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9266247379454927 [2022-10-17 10:59:01,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2022-10-17 10:59:01,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2022-10-17 10:59:01,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:01,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2022-10-17 10:59:01,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:01,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:01,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:01,415 INFO L175 Difference]: Start difference. First operand has 162 places, 151 transitions, 314 flow. Second operand 3 states and 442 transitions. [2022-10-17 10:59:01,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 159 transitions, 382 flow [2022-10-17 10:59:01,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 159 transitions, 376 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:59:01,423 INFO L231 Difference]: Finished difference. Result has 161 places, 150 transitions, 312 flow [2022-10-17 10:59:01,423 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=161, PETRI_TRANSITIONS=150} [2022-10-17 10:59:01,424 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, -5 predicate places. [2022-10-17 10:59:01,425 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 150 transitions, 312 flow [2022-10-17 10:59:01,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:01,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:01,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:59:01,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1307750629, now seen corresponding path program 1 times [2022-10-17 10:59:01,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:01,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872719316] [2022-10-17 10:59:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:01,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:01,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:01,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872719316] [2022-10-17 10:59:01,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872719316] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:01,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:01,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068459561] [2022-10-17 10:59:01,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:01,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:01,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:01,957 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 159 [2022-10-17 10:59:01,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 150 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:01,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:01,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 159 [2022-10-17 10:59:01,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:04,545 INFO L130 PetriNetUnfolder]: 2471/6208 cut-off events. [2022-10-17 10:59:04,545 INFO L131 PetriNetUnfolder]: For 340/340 co-relation queries the response was YES. [2022-10-17 10:59:04,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10143 conditions, 6208 events. 2471/6208 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 56271 event pairs, 342 based on Foata normal form. 0/6081 useless extension candidates. Maximal degree in co-relation 10067. Up to 1665 conditions per place. [2022-10-17 10:59:04,597 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 27 selfloop transitions, 2 changer transitions 71/215 dead transitions. [2022-10-17 10:59:04,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 215 transitions, 630 flow [2022-10-17 10:59:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:59:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:59:04,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1277 transitions. [2022-10-17 10:59:04,603 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8923829489867225 [2022-10-17 10:59:04,605 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1277 transitions. [2022-10-17 10:59:04,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1277 transitions. [2022-10-17 10:59:04,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:04,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1277 transitions. [2022-10-17 10:59:04,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.88888888888889) internal successors, (1277), 9 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:04,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:04,617 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:04,617 INFO L175 Difference]: Start difference. First operand has 161 places, 150 transitions, 312 flow. Second operand 9 states and 1277 transitions. [2022-10-17 10:59:04,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 215 transitions, 630 flow [2022-10-17 10:59:04,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 215 transitions, 612 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:59:04,627 INFO L231 Difference]: Finished difference. Result has 174 places, 136 transitions, 300 flow [2022-10-17 10:59:04,628 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=174, PETRI_TRANSITIONS=136} [2022-10-17 10:59:04,630 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 8 predicate places. [2022-10-17 10:59:04,630 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 136 transitions, 300 flow [2022-10-17 10:59:04,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:04,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:04,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:04,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:59:04,632 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:04,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:04,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1921267891, now seen corresponding path program 1 times [2022-10-17 10:59:04,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:04,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742137550] [2022-10-17 10:59:04,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:04,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:05,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:05,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742137550] [2022-10-17 10:59:05,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742137550] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:05,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:05,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:59:05,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378334334] [2022-10-17 10:59:05,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:05,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:59:05,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:05,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:59:05,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:59:05,805 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 159 [2022-10-17 10:59:05,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 136 transitions, 300 flow. Second operand has 10 states, 10 states have (on average 130.5) internal successors, (1305), 10 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:05,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:05,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 159 [2022-10-17 10:59:05,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:08,585 INFO L130 PetriNetUnfolder]: 2472/4477 cut-off events. [2022-10-17 10:59:08,585 INFO L131 PetriNetUnfolder]: For 966/966 co-relation queries the response was YES. [2022-10-17 10:59:08,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9102 conditions, 4477 events. 2472/4477 cut-off events. For 966/966 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 30394 event pairs, 1369 based on Foata normal form. 90/4436 useless extension candidates. Maximal degree in co-relation 9016. Up to 2260 conditions per place. [2022-10-17 10:59:08,651 INFO L137 encePairwiseOnDemand]: 146/159 looper letters, 29 selfloop transitions, 12 changer transitions 68/221 dead transitions. [2022-10-17 10:59:08,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 221 transitions, 726 flow [2022-10-17 10:59:08,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:59:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-10-17 10:59:08,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2047 transitions. [2022-10-17 10:59:08,659 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8582809224318658 [2022-10-17 10:59:08,659 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2047 transitions. [2022-10-17 10:59:08,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2047 transitions. [2022-10-17 10:59:08,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:08,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2047 transitions. [2022-10-17 10:59:08,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 136.46666666666667) internal successors, (2047), 15 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:08,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 159.0) internal successors, (2544), 16 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:08,683 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 159.0) internal successors, (2544), 16 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:08,683 INFO L175 Difference]: Start difference. First operand has 174 places, 136 transitions, 300 flow. Second operand 15 states and 2047 transitions. [2022-10-17 10:59:08,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 221 transitions, 726 flow [2022-10-17 10:59:08,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 221 transitions, 686 flow, removed 18 selfloop flow, removed 8 redundant places. [2022-10-17 10:59:08,761 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 380 flow [2022-10-17 10:59:08,767 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=380, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2022-10-17 10:59:08,769 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 5 predicate places. [2022-10-17 10:59:08,769 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 380 flow [2022-10-17 10:59:08,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 130.5) internal successors, (1305), 10 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:08,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:08,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:08,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:59:08,771 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:08,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1745045234, now seen corresponding path program 1 times [2022-10-17 10:59:08,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:08,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84730438] [2022-10-17 10:59:08,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:08,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:09,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:09,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84730438] [2022-10-17 10:59:09,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84730438] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:09,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:09,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740719875] [2022-10-17 10:59:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:09,287 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 159 [2022-10-17 10:59:09,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:09,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:09,289 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 159 [2022-10-17 10:59:09,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:11,130 INFO L130 PetriNetUnfolder]: 1691/3394 cut-off events. [2022-10-17 10:59:11,131 INFO L131 PetriNetUnfolder]: For 4455/4485 co-relation queries the response was YES. [2022-10-17 10:59:11,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 3394 events. 1691/3394 cut-off events. For 4455/4485 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 23284 event pairs, 687 based on Foata normal form. 80/3344 useless extension candidates. Maximal degree in co-relation 8707. Up to 1282 conditions per place. [2022-10-17 10:59:11,175 INFO L137 encePairwiseOnDemand]: 153/159 looper letters, 59 selfloop transitions, 11 changer transitions 6/194 dead transitions. [2022-10-17 10:59:11,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 194 transitions, 742 flow [2022-10-17 10:59:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:59:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:59:11,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1269 transitions. [2022-10-17 10:59:11,181 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8867924528301887 [2022-10-17 10:59:11,181 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1269 transitions. [2022-10-17 10:59:11,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1269 transitions. [2022-10-17 10:59:11,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:11,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1269 transitions. [2022-10-17 10:59:11,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.0) internal successors, (1269), 9 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:11,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:11,192 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:11,192 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 380 flow. Second operand 9 states and 1269 transitions. [2022-10-17 10:59:11,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 194 transitions, 742 flow [2022-10-17 10:59:11,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 194 transitions, 708 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-10-17 10:59:11,213 INFO L231 Difference]: Finished difference. Result has 168 places, 152 transitions, 462 flow [2022-10-17 10:59:11,214 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=168, PETRI_TRANSITIONS=152} [2022-10-17 10:59:11,215 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 2 predicate places. [2022-10-17 10:59:11,215 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 152 transitions, 462 flow [2022-10-17 10:59:11,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:11,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:11,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:11,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:59:11,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:11,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:11,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2083311664, now seen corresponding path program 1 times [2022-10-17 10:59:11,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:11,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971034369] [2022-10-17 10:59:11,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:11,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:11,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:11,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971034369] [2022-10-17 10:59:11,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971034369] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:11,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:11,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:59:11,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750353587] [2022-10-17 10:59:11,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:11,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:59:11,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:11,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:59:11,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:59:11,654 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 159 [2022-10-17 10:59:11,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 152 transitions, 462 flow. Second operand has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:11,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:11,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 159 [2022-10-17 10:59:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:16,793 INFO L130 PetriNetUnfolder]: 8836/15691 cut-off events. [2022-10-17 10:59:16,794 INFO L131 PetriNetUnfolder]: For 14441/14482 co-relation queries the response was YES. [2022-10-17 10:59:16,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38060 conditions, 15691 events. 8836/15691 cut-off events. For 14441/14482 co-relation queries the response was YES. Maximal size of possible extension queue 860. Compared 129082 event pairs, 543 based on Foata normal form. 0/15414 useless extension candidates. Maximal degree in co-relation 37968. Up to 5539 conditions per place. [2022-10-17 10:59:16,998 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 106 selfloop transitions, 16 changer transitions 22/260 dead transitions. [2022-10-17 10:59:16,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 260 transitions, 1149 flow [2022-10-17 10:59:16,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:59:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:59:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1404 transitions. [2022-10-17 10:59:17,004 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8830188679245283 [2022-10-17 10:59:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1404 transitions. [2022-10-17 10:59:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1404 transitions. [2022-10-17 10:59:17,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:17,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1404 transitions. [2022-10-17 10:59:17,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.4) internal successors, (1404), 10 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:17,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:17,016 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 159.0) internal successors, (1749), 11 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:17,016 INFO L175 Difference]: Start difference. First operand has 168 places, 152 transitions, 462 flow. Second operand 10 states and 1404 transitions. [2022-10-17 10:59:17,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 260 transitions, 1149 flow [2022-10-17 10:59:17,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 260 transitions, 1075 flow, removed 37 selfloop flow, removed 4 redundant places. [2022-10-17 10:59:17,160 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 537 flow [2022-10-17 10:59:17,161 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=537, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2022-10-17 10:59:17,164 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-10-17 10:59:17,164 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 537 flow [2022-10-17 10:59:17,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.5) internal successors, (783), 6 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:17,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:17,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:17,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:59:17,165 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:17,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:17,166 INFO L85 PathProgramCache]: Analyzing trace with hash 475700733, now seen corresponding path program 1 times [2022-10-17 10:59:17,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:17,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346310078] [2022-10-17 10:59:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:17,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:17,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:17,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346310078] [2022-10-17 10:59:17,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346310078] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:17,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:17,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:59:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567016904] [2022-10-17 10:59:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:17,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:59:17,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:17,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:59:17,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:59:17,847 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 159 [2022-10-17 10:59:17,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:17,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:17,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 159 [2022-10-17 10:59:17,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:59:22,311 INFO L130 PetriNetUnfolder]: 7614/14117 cut-off events. [2022-10-17 10:59:22,312 INFO L131 PetriNetUnfolder]: For 19917/20036 co-relation queries the response was YES. [2022-10-17 10:59:22,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41943 conditions, 14117 events. 7614/14117 cut-off events. For 19917/20036 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 122309 event pairs, 388 based on Foata normal form. 246/14312 useless extension candidates. Maximal degree in co-relation 41846. Up to 2632 conditions per place. [2022-10-17 10:59:22,427 INFO L137 encePairwiseOnDemand]: 148/159 looper letters, 139 selfloop transitions, 32 changer transitions 18/305 dead transitions. [2022-10-17 10:59:22,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 305 transitions, 1593 flow [2022-10-17 10:59:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:59:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:59:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1827 transitions. [2022-10-17 10:59:22,435 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8838896952104499 [2022-10-17 10:59:22,435 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1827 transitions. [2022-10-17 10:59:22,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1827 transitions. [2022-10-17 10:59:22,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:59:22,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1827 transitions. [2022-10-17 10:59:22,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 140.53846153846155) internal successors, (1827), 13 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:22,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 159.0) internal successors, (2226), 14 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:22,449 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 159.0) internal successors, (2226), 14 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:22,450 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 537 flow. Second operand 13 states and 1827 transitions. [2022-10-17 10:59:22,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 305 transitions, 1593 flow [2022-10-17 10:59:22,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 305 transitions, 1589 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-10-17 10:59:22,580 INFO L231 Difference]: Finished difference. Result has 196 places, 184 transitions, 791 flow [2022-10-17 10:59:22,581 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=791, PETRI_PLACES=196, PETRI_TRANSITIONS=184} [2022-10-17 10:59:22,581 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 30 predicate places. [2022-10-17 10:59:22,582 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 184 transitions, 791 flow [2022-10-17 10:59:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.42857142857142) internal successors, (913), 7 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:22,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:59:22,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:59:22,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:59:22,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2022-10-17 10:59:22,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:59:22,584 INFO L85 PathProgramCache]: Analyzing trace with hash -278810680, now seen corresponding path program 1 times [2022-10-17 10:59:22,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:59:22,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54718585] [2022-10-17 10:59:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:59:22,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:59:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:59:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:59:23,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:59:23,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54718585] [2022-10-17 10:59:23,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54718585] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:59:23,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:59:23,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:59:23,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111123333] [2022-10-17 10:59:23,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:59:23,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:59:23,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:59:23,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:59:23,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:59:23,418 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 159 [2022-10-17 10:59:23,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 184 transitions, 791 flow. Second operand has 8 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:59:23,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:59:23,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 159 [2022-10-17 10:59:23,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand