./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/queue_longest.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/queue_longest.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --- 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-2329fc7 [2022-12-13 15:13:58,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:13:58,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:13:58,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:13:58,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:13:58,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:13:58,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:13:58,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:13:58,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:13:58,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:13:58,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:13:58,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:13:58,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:13:58,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:13:58,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:13:58,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:13:58,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:13:58,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:13:58,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:13:58,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:13:58,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:13:58,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:13:58,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:13:58,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:13:58,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:13:58,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:13:58,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:13:58,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:13:58,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:13:58,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:13:58,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:13:58,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:13:58,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:13:58,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:13:58,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:13:58,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:13:58,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:13:58,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:13:58,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:13:58,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:13:58,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:13:58,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 15:13:58,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:13:58,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:13:58,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:13:58,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:13:58,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:13:58,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:13:58,491 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:13:58,491 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:13:58,492 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:13:58,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:13:58,492 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:13:58,492 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 15:13:58,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:13:58,493 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 15:13:58,494 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:13:58,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:13:58,494 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:13:58,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:13:58,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:13:58,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:13:58,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:13:58,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:13:58,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:13:58,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:13:58,496 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:13:58,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:13:58,497 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:13:58,497 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 [2022-12-13 15:13:58,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:13:58,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:13:58,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:13:58,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:13:58,706 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:13:58,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/queue_longest.i [2022-12-13 15:14:01,356 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:14:01,536 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:14:01,536 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i [2022-12-13 15:14:01,547 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/data/c103e788c/8ffe722c34054bf381385c93138e7f76/FLAG5af49733b [2022-12-13 15:14:01,557 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/data/c103e788c/8ffe722c34054bf381385c93138e7f76 [2022-12-13 15:14:01,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:14:01,560 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:14:01,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:14:01,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:14:01,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:14:01,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:14:01" (1/1) ... [2022-12-13 15:14:01,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ec403bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:01, skipping insertion in model container [2022-12-13 15:14:01,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:14:01" (1/1) ... [2022-12-13 15:14:01,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:14:01,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:14:01,942 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-12-13 15:14:01,945 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-12-13 15:14:01,947 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-12-13 15:14:01,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:14:01,958 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:14:01,987 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43296,43309] [2022-12-13 15:14:01,989 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43503,43516] [2022-12-13 15:14:01,991 WARN L237 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_25cf333f-6d5a-409a-a86a-0e8483a54011/sv-benchmarks/c/pthread/queue_longest.i[43783,43796] [2022-12-13 15:14:01,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:14:02,046 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:14:02,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02 WrapperNode [2022-12-13 15:14:02,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:14:02,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:14:02,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:14:02,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:14:02,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,097 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 259 [2022-12-13 15:14:02,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:14:02,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:14:02,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:14:02,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:14:02,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:14:02,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:14:02,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:14:02,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:14:02,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (1/1) ... [2022-12-13 15:14:02,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:14:02,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:14:02,165 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:14:02,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:14:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-13 15:14:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-13 15:14:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-13 15:14:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-13 15:14:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:14:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:14:02,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:14:02,196 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 15:14:02,310 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:14:02,312 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:14:02,608 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:14:02,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:14:02,618 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:14:02,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:14:02 BoogieIcfgContainer [2022-12-13 15:14:02,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:14:02,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:14:02,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:14:02,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:14:02,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:14:01" (1/3) ... [2022-12-13 15:14:02,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55194875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:14:02, skipping insertion in model container [2022-12-13 15:14:02,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:14:02" (2/3) ... [2022-12-13 15:14:02,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55194875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:14:02, skipping insertion in model container [2022-12-13 15:14:02,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:14:02" (3/3) ... [2022-12-13 15:14:02,629 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2022-12-13 15:14:02,637 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 15:14:02,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:14:02,647 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-12-13 15:14:02,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 15:14:02,733 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 15:14:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 305 transitions, 626 flow [2022-12-13 15:14:02,871 INFO L130 PetriNetUnfolder]: 15/303 cut-off events. [2022-12-13 15:14:02,871 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 15:14:02,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 303 events. 15/303 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 471 event pairs, 0 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-12-13 15:14:02,880 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 305 transitions, 626 flow [2022-12-13 15:14:02,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 293 transitions, 595 flow [2022-12-13 15:14:02,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 15:14:02,897 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 293 transitions, 595 flow [2022-12-13 15:14:02,899 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 293 transitions, 595 flow [2022-12-13 15:14:02,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 293 transitions, 595 flow [2022-12-13 15:14:02,957 INFO L130 PetriNetUnfolder]: 15/293 cut-off events. [2022-12-13 15:14:02,957 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 15:14:02,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 293 events. 15/293 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 427 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2022-12-13 15:14:02,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 23276 [2022-12-13 15:14:08,844 INFO L134 LiptonReduction]: Checked pairs total: 58351 [2022-12-13 15:14:08,844 INFO L136 LiptonReduction]: Total number of compositions: 282 [2022-12-13 15:14:08,855 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:14:08,859 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;@ba77bbd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:14:08,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-12-13 15:14:08,862 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 15:14:08,862 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 15:14:08,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:08,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 15:14:08,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:08,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:08,867 INFO L85 PathProgramCache]: Analyzing trace with hash 965566228, now seen corresponding path program 1 times [2022-12-13 15:14:08,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:08,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381157319] [2022-12-13 15:14:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:09,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:09,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:09,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381157319] [2022-12-13 15:14:09,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381157319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:09,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:09,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:14:09,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045189697] [2022-12-13 15:14:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:09,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:14:09,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:14:09,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:14:09,849 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 587 [2022-12-13 15:14:09,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 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) [2022-12-13 15:14:09,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:09,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 587 [2022-12-13 15:14:09,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:10,365 INFO L130 PetriNetUnfolder]: 3013/5040 cut-off events. [2022-12-13 15:14:10,365 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-13 15:14:10,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9937 conditions, 5040 events. 3013/5040 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 26908 event pairs, 2536 based on Foata normal form. 78/3612 useless extension candidates. Maximal degree in co-relation 9716. Up to 4787 conditions per place. [2022-12-13 15:14:10,396 INFO L137 encePairwiseOnDemand]: 578/587 looper letters, 72 selfloop transitions, 7 changer transitions 0/85 dead transitions. [2022-12-13 15:14:10,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 337 flow [2022-12-13 15:14:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1423 transitions. [2022-12-13 15:14:10,437 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4848381601362862 [2022-12-13 15:14:10,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1423 transitions. [2022-12-13 15:14:10,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1423 transitions. [2022-12-13 15:14:10,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:10,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1423 transitions. [2022-12-13 15:14:10,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 284.6) internal successors, (1423), 5 states have internal predecessors, (1423), 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) [2022-12-13 15:14:10,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:10,462 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:10,464 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 167 flow. Second operand 5 states and 1423 transitions. [2022-12-13 15:14:10,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 337 flow [2022-12-13 15:14:10,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:14:10,471 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 205 flow [2022-12-13 15:14:10,473 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2022-12-13 15:14:10,476 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2022-12-13 15:14:10,476 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 205 flow [2022-12-13 15:14:10,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.2) internal successors, (1346), 5 states have internal predecessors, (1346), 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) [2022-12-13 15:14:10,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:10,477 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:10,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:14:10,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:10,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -132329427, now seen corresponding path program 1 times [2022-12-13 15:14:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:10,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278714343] [2022-12-13 15:14:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:10,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:10,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:10,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:10,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:10,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278714343] [2022-12-13 15:14:10,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278714343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:10,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:10,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:14:10,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177536789] [2022-12-13 15:14:10,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:10,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:14:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:10,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:14:10,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:14:11,005 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 587 [2022-12-13 15:14:11,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 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) [2022-12-13 15:14:11,007 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:11,007 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 587 [2022-12-13 15:14:11,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:11,528 INFO L130 PetriNetUnfolder]: 3244/5422 cut-off events. [2022-12-13 15:14:11,528 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-12-13 15:14:11,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11068 conditions, 5422 events. 3244/5422 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 29757 event pairs, 719 based on Foata normal form. 27/3920 useless extension candidates. Maximal degree in co-relation 10047. Up to 4820 conditions per place. [2022-12-13 15:14:11,551 INFO L137 encePairwiseOnDemand]: 579/587 looper letters, 118 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2022-12-13 15:14:11,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 137 transitions, 589 flow [2022-12-13 15:14:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:11,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1455 transitions. [2022-12-13 15:14:11,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4957410562180579 [2022-12-13 15:14:11,555 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1455 transitions. [2022-12-13 15:14:11,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1455 transitions. [2022-12-13 15:14:11,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:11,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1455 transitions. [2022-12-13 15:14:11,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.0) internal successors, (1455), 5 states have internal predecessors, (1455), 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) [2022-12-13 15:14:11,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:11,563 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:11,564 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 205 flow. Second operand 5 states and 1455 transitions. [2022-12-13 15:14:11,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 137 transitions, 589 flow [2022-12-13 15:14:11,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 137 transitions, 589 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 15:14:11,570 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 277 flow [2022-12-13 15:14:11,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=277, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2022-12-13 15:14:11,571 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2022-12-13 15:14:11,571 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 277 flow [2022-12-13 15:14:11,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.1666666666667) internal successors, (1597), 6 states have internal predecessors, (1597), 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) [2022-12-13 15:14:11,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:11,573 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:14:11,573 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:11,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash -132098787, now seen corresponding path program 2 times [2022-12-13 15:14:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:11,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222173672] [2022-12-13 15:14:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:11,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:12,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:12,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222173672] [2022-12-13 15:14:12,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222173672] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:12,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:12,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:14:12,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054832659] [2022-12-13 15:14:12,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:12,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:14:12,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:12,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:14:12,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:14:12,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 587 [2022-12-13 15:14:12,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 277 flow. Second operand has 6 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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) [2022-12-13 15:14:12,787 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:12,787 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 587 [2022-12-13 15:14:12,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:13,673 INFO L130 PetriNetUnfolder]: 3364/5604 cut-off events. [2022-12-13 15:14:13,673 INFO L131 PetriNetUnfolder]: For 892/892 co-relation queries the response was YES. [2022-12-13 15:14:13,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12032 conditions, 5604 events. 3364/5604 cut-off events. For 892/892 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 30805 event pairs, 819 based on Foata normal form. 27/4038 useless extension candidates. Maximal degree in co-relation 10504. Up to 4878 conditions per place. [2022-12-13 15:14:13,705 INFO L137 encePairwiseOnDemand]: 579/587 looper letters, 119 selfloop transitions, 15 changer transitions 0/140 dead transitions. [2022-12-13 15:14:13,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 140 transitions, 660 flow [2022-12-13 15:14:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:13,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-12-13 15:14:13,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4971039182282794 [2022-12-13 15:14:13,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-12-13 15:14:13,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-12-13 15:14:13,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:13,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-12-13 15:14:13,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 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) [2022-12-13 15:14:13,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:13,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:13,727 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 277 flow. Second operand 5 states and 1459 transitions. [2022-12-13 15:14:13,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 140 transitions, 660 flow [2022-12-13 15:14:13,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 140 transitions, 646 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-12-13 15:14:13,736 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 325 flow [2022-12-13 15:14:13,736 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2022-12-13 15:14:13,737 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2022-12-13 15:14:13,737 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 325 flow [2022-12-13 15:14:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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) [2022-12-13 15:14:13,738 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:13,738 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:14:13,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:13,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash -132215037, now seen corresponding path program 3 times [2022-12-13 15:14:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:13,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022405875] [2022-12-13 15:14:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:13,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:14,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:14,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022405875] [2022-12-13 15:14:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022405875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:14,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:14,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:14:14,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071056248] [2022-12-13 15:14:14,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:14:14,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:14,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:14:14,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:14:14,920 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 587 [2022-12-13 15:14:14,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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) [2022-12-13 15:14:14,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:14,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 587 [2022-12-13 15:14:14,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:15,775 INFO L130 PetriNetUnfolder]: 3422/5708 cut-off events. [2022-12-13 15:14:15,776 INFO L131 PetriNetUnfolder]: For 1265/1265 co-relation queries the response was YES. [2022-12-13 15:14:15,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12426 conditions, 5708 events. 3422/5708 cut-off events. For 1265/1265 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 31737 event pairs, 814 based on Foata normal form. 27/4123 useless extension candidates. Maximal degree in co-relation 11242. Up to 4867 conditions per place. [2022-12-13 15:14:15,792 INFO L137 encePairwiseOnDemand]: 580/587 looper letters, 120 selfloop transitions, 16 changer transitions 0/142 dead transitions. [2022-12-13 15:14:15,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 142 transitions, 709 flow [2022-12-13 15:14:15,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-12-13 15:14:15,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4971039182282794 [2022-12-13 15:14:15,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-12-13 15:14:15,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-12-13 15:14:15,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:15,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-12-13 15:14:15,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 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) [2022-12-13 15:14:15,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:15,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:15,801 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 325 flow. Second operand 5 states and 1459 transitions. [2022-12-13 15:14:15,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 142 transitions, 709 flow [2022-12-13 15:14:15,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 142 transitions, 691 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:15,806 INFO L231 Difference]: Finished difference. Result has 96 places, 95 transitions, 369 flow [2022-12-13 15:14:15,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=96, PETRI_TRANSITIONS=95} [2022-12-13 15:14:15,806 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2022-12-13 15:14:15,807 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 95 transitions, 369 flow [2022-12-13 15:14:15,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.1666666666667) internal successors, (1603), 6 states have internal predecessors, (1603), 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) [2022-12-13 15:14:15,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:15,807 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:15,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:14:15,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:15,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:15,808 INFO L85 PathProgramCache]: Analyzing trace with hash 689634943, now seen corresponding path program 1 times [2022-12-13 15:14:15,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526683694] [2022-12-13 15:14:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526683694] [2022-12-13 15:14:15,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526683694] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:15,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:15,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:15,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061471386] [2022-12-13 15:14:15,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:15,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:15,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:15,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:15,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:15,842 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 587 [2022-12-13 15:14:15,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 95 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-12-13 15:14:15,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:15,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 587 [2022-12-13 15:14:15,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:16,649 INFO L130 PetriNetUnfolder]: 5823/9723 cut-off events. [2022-12-13 15:14:16,650 INFO L131 PetriNetUnfolder]: For 4343/4343 co-relation queries the response was YES. [2022-12-13 15:14:16,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21356 conditions, 9723 events. 5823/9723 cut-off events. For 4343/4343 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 61165 event pairs, 2679 based on Foata normal form. 0/7069 useless extension candidates. Maximal degree in co-relation 19360. Up to 5360 conditions per place. [2022-12-13 15:14:16,688 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 160 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2022-12-13 15:14:16,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 954 flow [2022-12-13 15:14:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2022-12-13 15:14:16,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5672913117546848 [2022-12-13 15:14:16,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2022-12-13 15:14:16,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2022-12-13 15:14:16,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:16,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2022-12-13 15:14:16,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 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) [2022-12-13 15:14:16,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:16,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:16,694 INFO L175 Difference]: Start difference. First operand has 96 places, 95 transitions, 369 flow. Second operand 3 states and 999 transitions. [2022-12-13 15:14:16,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 954 flow [2022-12-13 15:14:16,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 169 transitions, 900 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-12-13 15:14:16,698 INFO L231 Difference]: Finished difference. Result has 96 places, 96 transitions, 355 flow [2022-12-13 15:14:16,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=355, PETRI_PLACES=96, PETRI_TRANSITIONS=96} [2022-12-13 15:14:16,699 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 19 predicate places. [2022-12-13 15:14:16,699 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 96 transitions, 355 flow [2022-12-13 15:14:16,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-12-13 15:14:16,699 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:16,699 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:16,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:14:16,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:16,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:16,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1783955680, now seen corresponding path program 1 times [2022-12-13 15:14:16,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:16,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57021778] [2022-12-13 15:14:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:16,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:16,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57021778] [2022-12-13 15:14:16,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57021778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:16,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:16,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:14:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787661205] [2022-12-13 15:14:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:14:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:16,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:14:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:14:17,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 587 [2022-12-13 15:14:17,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 96 transitions, 355 flow. Second operand has 5 states, 5 states have (on average 269.8) internal successors, (1349), 5 states have internal predecessors, (1349), 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) [2022-12-13 15:14:17,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:17,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 587 [2022-12-13 15:14:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:17,851 INFO L130 PetriNetUnfolder]: 5983/9974 cut-off events. [2022-12-13 15:14:17,851 INFO L131 PetriNetUnfolder]: For 3668/3668 co-relation queries the response was YES. [2022-12-13 15:14:17,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22012 conditions, 9974 events. 5983/9974 cut-off events. For 3668/3668 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 60585 event pairs, 4756 based on Foata normal form. 0/7335 useless extension candidates. Maximal degree in co-relation 19465. Up to 9506 conditions per place. [2022-12-13 15:14:17,879 INFO L137 encePairwiseOnDemand]: 579/587 looper letters, 88 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2022-12-13 15:14:17,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 561 flow [2022-12-13 15:14:17,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:17,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:17,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1425 transitions. [2022-12-13 15:14:17,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4855195911413969 [2022-12-13 15:14:17,882 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1425 transitions. [2022-12-13 15:14:17,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1425 transitions. [2022-12-13 15:14:17,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:17,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1425 transitions. [2022-12-13 15:14:17,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 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) [2022-12-13 15:14:17,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:17,888 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:17,888 INFO L175 Difference]: Start difference. First operand has 96 places, 96 transitions, 355 flow. Second operand 5 states and 1425 transitions. [2022-12-13 15:14:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 561 flow [2022-12-13 15:14:17,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 102 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:17,891 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 389 flow [2022-12-13 15:14:17,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=389, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2022-12-13 15:14:17,891 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2022-12-13 15:14:17,892 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 389 flow [2022-12-13 15:14:17,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 269.8) internal successors, (1349), 5 states have internal predecessors, (1349), 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) [2022-12-13 15:14:17,892 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:17,892 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:17,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:14:17,892 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:17,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:17,893 INFO L85 PathProgramCache]: Analyzing trace with hash 550456561, now seen corresponding path program 1 times [2022-12-13 15:14:17,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:17,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059065600] [2022-12-13 15:14:17,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:17,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:18,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059065600] [2022-12-13 15:14:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059065600] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:18,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:18,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:14:18,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284785767] [2022-12-13 15:14:18,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:18,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:14:18,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:18,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:14:18,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:14:18,297 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 587 [2022-12-13 15:14:18,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 389 flow. Second operand has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 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) [2022-12-13 15:14:18,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:18,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 587 [2022-12-13 15:14:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:19,080 INFO L130 PetriNetUnfolder]: 6100/10206 cut-off events. [2022-12-13 15:14:19,080 INFO L131 PetriNetUnfolder]: For 2864/2864 co-relation queries the response was YES. [2022-12-13 15:14:19,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22869 conditions, 10206 events. 6100/10206 cut-off events. For 2864/2864 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 62851 event pairs, 1310 based on Foata normal form. 90/7875 useless extension candidates. Maximal degree in co-relation 14020. Up to 8813 conditions per place. [2022-12-13 15:14:19,116 INFO L137 encePairwiseOnDemand]: 578/587 looper letters, 130 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2022-12-13 15:14:19,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 152 transitions, 837 flow [2022-12-13 15:14:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:19,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:19,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1459 transitions. [2022-12-13 15:14:19,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4971039182282794 [2022-12-13 15:14:19,120 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1459 transitions. [2022-12-13 15:14:19,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1459 transitions. [2022-12-13 15:14:19,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:19,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1459 transitions. [2022-12-13 15:14:19,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 291.8) internal successors, (1459), 5 states have internal predecessors, (1459), 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) [2022-12-13 15:14:19,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:19,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:19,127 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 389 flow. Second operand 5 states and 1459 transitions. [2022-12-13 15:14:19,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 152 transitions, 837 flow [2022-12-13 15:14:19,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 152 transitions, 825 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 15:14:19,147 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 437 flow [2022-12-13 15:14:19,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=437, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2022-12-13 15:14:19,148 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 25 predicate places. [2022-12-13 15:14:19,148 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 437 flow [2022-12-13 15:14:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 266.6666666666667) internal successors, (1600), 6 states have internal predecessors, (1600), 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) [2022-12-13 15:14:19,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:19,149 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:19,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:14:19,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:19,149 INFO L85 PathProgramCache]: Analyzing trace with hash -90385092, now seen corresponding path program 1 times [2022-12-13 15:14:19,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:19,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449397873] [2022-12-13 15:14:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:19,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:19,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:19,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449397873] [2022-12-13 15:14:19,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449397873] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:19,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:19,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:19,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919654340] [2022-12-13 15:14:19,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:19,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:19,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:19,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 587 [2022-12-13 15:14:19,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 437 flow. Second operand has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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) [2022-12-13 15:14:19,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:19,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 587 [2022-12-13 15:14:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:19,853 INFO L130 PetriNetUnfolder]: 4477/7693 cut-off events. [2022-12-13 15:14:19,853 INFO L131 PetriNetUnfolder]: For 2783/2783 co-relation queries the response was YES. [2022-12-13 15:14:19,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17178 conditions, 7693 events. 4477/7693 cut-off events. For 2783/2783 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 44274 event pairs, 2509 based on Foata normal form. 0/5668 useless extension candidates. Maximal degree in co-relation 15794. Up to 4775 conditions per place. [2022-12-13 15:14:19,876 INFO L137 encePairwiseOnDemand]: 583/587 looper letters, 114 selfloop transitions, 3 changer transitions 0/123 dead transitions. [2022-12-13 15:14:19,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 123 transitions, 680 flow [2022-12-13 15:14:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 965 transitions. [2022-12-13 15:14:19,878 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5479840999432141 [2022-12-13 15:14:19,878 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 965 transitions. [2022-12-13 15:14:19,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 965 transitions. [2022-12-13 15:14:19,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:19,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 965 transitions. [2022-12-13 15:14:19,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 321.6666666666667) internal successors, (965), 3 states have internal predecessors, (965), 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) [2022-12-13 15:14:19,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:19,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:19,882 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 437 flow. Second operand 3 states and 965 transitions. [2022-12-13 15:14:19,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 123 transitions, 680 flow [2022-12-13 15:14:19,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 123 transitions, 626 flow, removed 3 selfloop flow, removed 9 redundant places. [2022-12-13 15:14:19,889 INFO L231 Difference]: Finished difference. Result has 94 places, 89 transitions, 318 flow [2022-12-13 15:14:19,890 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=318, PETRI_PLACES=94, PETRI_TRANSITIONS=89} [2022-12-13 15:14:19,890 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2022-12-13 15:14:19,890 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 89 transitions, 318 flow [2022-12-13 15:14:19,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.3333333333333) internal successors, (871), 3 states have internal predecessors, (871), 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) [2022-12-13 15:14:19,891 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:19,891 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:19,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:14:19,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash -529763925, now seen corresponding path program 2 times [2022-12-13 15:14:19,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125880557] [2022-12-13 15:14:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:19,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:20,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:20,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125880557] [2022-12-13 15:14:20,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125880557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:20,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:20,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:14:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790528412] [2022-12-13 15:14:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:14:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:14:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:14:20,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 587 [2022-12-13 15:14:20,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 89 transitions, 318 flow. Second operand has 6 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 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) [2022-12-13 15:14:20,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:20,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 587 [2022-12-13 15:14:20,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:21,651 INFO L130 PetriNetUnfolder]: 4523/7644 cut-off events. [2022-12-13 15:14:21,651 INFO L131 PetriNetUnfolder]: For 1333/1333 co-relation queries the response was YES. [2022-12-13 15:14:21,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16643 conditions, 7644 events. 4523/7644 cut-off events. For 1333/1333 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 42614 event pairs, 1495 based on Foata normal form. 42/5758 useless extension candidates. Maximal degree in co-relation 15174. Up to 6526 conditions per place. [2022-12-13 15:14:21,672 INFO L137 encePairwiseOnDemand]: 580/587 looper letters, 99 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2022-12-13 15:14:21,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 115 transitions, 616 flow [2022-12-13 15:14:21,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:14:21,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 15:14:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1428 transitions. [2022-12-13 15:14:21,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48654173764906306 [2022-12-13 15:14:21,675 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1428 transitions. [2022-12-13 15:14:21,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1428 transitions. [2022-12-13 15:14:21,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:21,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1428 transitions. [2022-12-13 15:14:21,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 285.6) internal successors, (1428), 5 states have internal predecessors, (1428), 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) [2022-12-13 15:14:21,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:21,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 587.0) internal successors, (3522), 6 states have internal predecessors, (3522), 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) [2022-12-13 15:14:21,679 INFO L175 Difference]: Start difference. First operand has 94 places, 89 transitions, 318 flow. Second operand 5 states and 1428 transitions. [2022-12-13 15:14:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 115 transitions, 616 flow [2022-12-13 15:14:21,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 115 transitions, 613 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:21,684 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 313 flow [2022-12-13 15:14:21,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-12-13 15:14:21,685 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2022-12-13 15:14:21,685 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 313 flow [2022-12-13 15:14:21,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 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) [2022-12-13 15:14:21,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:21,685 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:21,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:14:21,685 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:21,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 301750063, now seen corresponding path program 1 times [2022-12-13 15:14:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:21,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447725824] [2022-12-13 15:14:21,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:21,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:21,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447725824] [2022-12-13 15:14:21,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447725824] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:14:21,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971813160] [2022-12-13 15:14:21,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:21,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:14:21,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:14:21,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:14:21,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:14:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:21,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:14:21,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:14:21,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:21,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:14:21,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971813160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:21,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:14:21,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 15:14:21,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370564324] [2022-12-13 15:14:21,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:21,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:14:21,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:14:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:14:21,851 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 587 [2022-12-13 15:14:21,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 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) [2022-12-13 15:14:21,853 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:21,853 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 587 [2022-12-13 15:14:21,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:22,600 INFO L130 PetriNetUnfolder]: 4157/7190 cut-off events. [2022-12-13 15:14:22,600 INFO L131 PetriNetUnfolder]: For 1579/1583 co-relation queries the response was YES. [2022-12-13 15:14:22,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15486 conditions, 7190 events. 4157/7190 cut-off events. For 1579/1583 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 42501 event pairs, 116 based on Foata normal form. 2/5436 useless extension candidates. Maximal degree in co-relation 14074. Up to 3576 conditions per place. [2022-12-13 15:14:22,625 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 173 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2022-12-13 15:14:22,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 183 transitions, 955 flow [2022-12-13 15:14:22,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:14:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 15:14:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1308 transitions. [2022-12-13 15:14:22,628 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5570698466780238 [2022-12-13 15:14:22,628 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1308 transitions. [2022-12-13 15:14:22,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1308 transitions. [2022-12-13 15:14:22,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:22,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1308 transitions. [2022-12-13 15:14:22,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 327.0) internal successors, (1308), 4 states have internal predecessors, (1308), 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) [2022-12-13 15:14:22,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 587.0) internal successors, (2935), 5 states have internal predecessors, (2935), 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) [2022-12-13 15:14:22,633 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 587.0) internal successors, (2935), 5 states have internal predecessors, (2935), 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) [2022-12-13 15:14:22,634 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 313 flow. Second operand 4 states and 1308 transitions. [2022-12-13 15:14:22,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 183 transitions, 955 flow [2022-12-13 15:14:22,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 183 transitions, 917 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 15:14:22,637 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 295 flow [2022-12-13 15:14:22,637 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2022-12-13 15:14:22,638 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2022-12-13 15:14:22,638 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 295 flow [2022-12-13 15:14:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 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) [2022-12-13 15:14:22,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:22,639 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:22,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:14:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_25cf333f-6d5a-409a-a86a-0e8483a54011/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:14:22,841 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:22,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:22,842 INFO L85 PathProgramCache]: Analyzing trace with hash 301750177, now seen corresponding path program 1 times [2022-12-13 15:14:22,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:22,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487646730] [2022-12-13 15:14:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:22,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:14:22,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487646730] [2022-12-13 15:14:22,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487646730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:22,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:22,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:22,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127457209] [2022-12-13 15:14:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:22,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:22,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 587 [2022-12-13 15:14:22,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 295 flow. Second operand has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-12-13 15:14:22,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:22,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 587 [2022-12-13 15:14:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:23,469 INFO L130 PetriNetUnfolder]: 3949/6882 cut-off events. [2022-12-13 15:14:23,469 INFO L131 PetriNetUnfolder]: For 1769/1777 co-relation queries the response was YES. [2022-12-13 15:14:23,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14827 conditions, 6882 events. 3949/6882 cut-off events. For 1769/1777 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 40015 event pairs, 472 based on Foata normal form. 4/5308 useless extension candidates. Maximal degree in co-relation 13533. Up to 5264 conditions per place. [2022-12-13 15:14:23,489 INFO L137 encePairwiseOnDemand]: 583/587 looper letters, 112 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-12-13 15:14:23,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 124 transitions, 642 flow [2022-12-13 15:14:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:23,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-12-13 15:14:23,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5457126632595116 [2022-12-13 15:14:23,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-12-13 15:14:23,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-12-13 15:14:23,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:23,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-12-13 15:14:23,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:14:23,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:23,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:23,494 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 295 flow. Second operand 3 states and 961 transitions. [2022-12-13 15:14:23,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 124 transitions, 642 flow [2022-12-13 15:14:23,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 124 transitions, 639 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:14:23,498 INFO L231 Difference]: Finished difference. Result has 92 places, 84 transitions, 304 flow [2022-12-13 15:14:23,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=92, PETRI_TRANSITIONS=84} [2022-12-13 15:14:23,498 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2022-12-13 15:14:23,498 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 84 transitions, 304 flow [2022-12-13 15:14:23,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 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) [2022-12-13 15:14:23,498 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:23,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:23,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:14:23,499 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1478385293, now seen corresponding path program 1 times [2022-12-13 15:14:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:23,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263471798] [2022-12-13 15:14:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:23,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:23,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:23,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263471798] [2022-12-13 15:14:23,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263471798] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:23,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:23,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:23,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644378881] [2022-12-13 15:14:23,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:23,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:23,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:23,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:23,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:23,543 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 587 [2022-12-13 15:14:23,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 84 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 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) [2022-12-13 15:14:23,544 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:23,544 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 587 [2022-12-13 15:14:23,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:24,142 INFO L130 PetriNetUnfolder]: 4431/7874 cut-off events. [2022-12-13 15:14:24,142 INFO L131 PetriNetUnfolder]: For 3632/3632 co-relation queries the response was YES. [2022-12-13 15:14:24,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17827 conditions, 7874 events. 4431/7874 cut-off events. For 3632/3632 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 47966 event pairs, 2042 based on Foata normal form. 0/6214 useless extension candidates. Maximal degree in co-relation 16342. Up to 6413 conditions per place. [2022-12-13 15:14:24,166 INFO L137 encePairwiseOnDemand]: 580/587 looper letters, 117 selfloop transitions, 2 changer transitions 0/127 dead transitions. [2022-12-13 15:14:24,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 127 transitions, 661 flow [2022-12-13 15:14:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 966 transitions. [2022-12-13 15:14:24,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5485519591141397 [2022-12-13 15:14:24,168 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 966 transitions. [2022-12-13 15:14:24,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 966 transitions. [2022-12-13 15:14:24,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:24,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 966 transitions. [2022-12-13 15:14:24,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 322.0) internal successors, (966), 3 states have internal predecessors, (966), 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) [2022-12-13 15:14:24,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:24,171 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:24,171 INFO L175 Difference]: Start difference. First operand has 92 places, 84 transitions, 304 flow. Second operand 3 states and 966 transitions. [2022-12-13 15:14:24,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 127 transitions, 661 flow [2022-12-13 15:14:24,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:24,174 INFO L231 Difference]: Finished difference. Result has 94 places, 85 transitions, 320 flow [2022-12-13 15:14:24,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=320, PETRI_PLACES=94, PETRI_TRANSITIONS=85} [2022-12-13 15:14:24,175 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2022-12-13 15:14:24,175 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 85 transitions, 320 flow [2022-12-13 15:14:24,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.3333333333333) internal successors, (874), 3 states have internal predecessors, (874), 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) [2022-12-13 15:14:24,175 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:24,175 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:24,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:14:24,176 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1402845516, now seen corresponding path program 1 times [2022-12-13 15:14:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:24,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823330956] [2022-12-13 15:14:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:24,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:24,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:24,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823330956] [2022-12-13 15:14:24,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823330956] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:24,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:24,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:14:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626007781] [2022-12-13 15:14:24,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:14:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:14:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:14:25,774 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 587 [2022-12-13 15:14:25,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 85 transitions, 320 flow. Second operand has 13 states, 13 states have (on average 249.46153846153845) internal successors, (3243), 13 states have internal predecessors, (3243), 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) [2022-12-13 15:14:25,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:25,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 587 [2022-12-13 15:14:25,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:27,172 INFO L130 PetriNetUnfolder]: 5500/9489 cut-off events. [2022-12-13 15:14:27,172 INFO L131 PetriNetUnfolder]: For 3879/3879 co-relation queries the response was YES. [2022-12-13 15:14:27,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22705 conditions, 9489 events. 5500/9489 cut-off events. For 3879/3879 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 55243 event pairs, 3737 based on Foata normal form. 0/7901 useless extension candidates. Maximal degree in co-relation 17444. Up to 7291 conditions per place. [2022-12-13 15:14:27,207 INFO L137 encePairwiseOnDemand]: 569/587 looper letters, 166 selfloop transitions, 34 changer transitions 3/210 dead transitions. [2022-12-13 15:14:27,207 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 210 transitions, 1214 flow [2022-12-13 15:14:27,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:14:27,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:14:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3650 transitions. [2022-12-13 15:14:27,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.444146994402531 [2022-12-13 15:14:27,212 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3650 transitions. [2022-12-13 15:14:27,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3650 transitions. [2022-12-13 15:14:27,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:27,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3650 transitions. [2022-12-13 15:14:27,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 260.7142857142857) internal successors, (3650), 14 states have internal predecessors, (3650), 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) [2022-12-13 15:14:27,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:14:27,223 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:14:27,223 INFO L175 Difference]: Start difference. First operand has 94 places, 85 transitions, 320 flow. Second operand 14 states and 3650 transitions. [2022-12-13 15:14:27,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 210 transitions, 1214 flow [2022-12-13 15:14:27,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 210 transitions, 1210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:27,229 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 530 flow [2022-12-13 15:14:27,229 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=530, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2022-12-13 15:14:27,230 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2022-12-13 15:14:27,230 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 530 flow [2022-12-13 15:14:27,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 249.46153846153845) internal successors, (3243), 13 states have internal predecessors, (3243), 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) [2022-12-13 15:14:27,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:27,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:27,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:14:27,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:27,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:27,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1402845490, now seen corresponding path program 1 times [2022-12-13 15:14:27,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:27,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923003408] [2022-12-13 15:14:27,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:27,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:27,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923003408] [2022-12-13 15:14:27,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923003408] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:27,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:27,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:14:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712479693] [2022-12-13 15:14:27,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:27,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:14:27,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:27,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:14:27,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:14:28,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 587 [2022-12-13 15:14:28,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 530 flow. Second operand has 14 states, 14 states have (on average 247.35714285714286) internal successors, (3463), 14 states have internal predecessors, (3463), 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) [2022-12-13 15:14:28,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:28,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 587 [2022-12-13 15:14:28,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:30,184 INFO L130 PetriNetUnfolder]: 5489/9462 cut-off events. [2022-12-13 15:14:30,184 INFO L131 PetriNetUnfolder]: For 5040/5040 co-relation queries the response was YES. [2022-12-13 15:14:30,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24374 conditions, 9462 events. 5489/9462 cut-off events. For 5040/5040 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 54717 event pairs, 4588 based on Foata normal form. 0/7994 useless extension candidates. Maximal degree in co-relation 18537. Up to 8928 conditions per place. [2022-12-13 15:14:30,218 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 91 selfloop transitions, 29 changer transitions 1/128 dead transitions. [2022-12-13 15:14:30,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 128 transitions, 877 flow [2022-12-13 15:14:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:14:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:14:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4036 transitions. [2022-12-13 15:14:30,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4297274275979557 [2022-12-13 15:14:30,223 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4036 transitions. [2022-12-13 15:14:30,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4036 transitions. [2022-12-13 15:14:30,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:30,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4036 transitions. [2022-12-13 15:14:30,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 252.25) internal successors, (4036), 16 states have internal predecessors, (4036), 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) [2022-12-13 15:14:30,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:14:30,234 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:14:30,234 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 530 flow. Second operand 16 states and 4036 transitions. [2022-12-13 15:14:30,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 128 transitions, 877 flow [2022-12-13 15:14:30,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 128 transitions, 821 flow, removed 18 selfloop flow, removed 5 redundant places. [2022-12-13 15:14:30,242 INFO L231 Difference]: Finished difference. Result has 132 places, 119 transitions, 656 flow [2022-12-13 15:14:30,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=656, PETRI_PLACES=132, PETRI_TRANSITIONS=119} [2022-12-13 15:14:30,243 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2022-12-13 15:14:30,243 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 119 transitions, 656 flow [2022-12-13 15:14:30,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 247.35714285714286) internal successors, (3463), 14 states have internal predecessors, (3463), 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) [2022-12-13 15:14:30,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:30,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:14:30,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 965028495, now seen corresponding path program 1 times [2022-12-13 15:14:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290546679] [2022-12-13 15:14:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:30,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:30,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:30,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:30,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290546679] [2022-12-13 15:14:30,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290546679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:30,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:30,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:14:30,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936046418] [2022-12-13 15:14:30,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:30,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:14:30,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:30,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:14:30,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:14:32,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 587 [2022-12-13 15:14:32,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 119 transitions, 656 flow. Second operand has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:32,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:32,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 587 [2022-12-13 15:14:32,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:34,058 INFO L130 PetriNetUnfolder]: 6136/10640 cut-off events. [2022-12-13 15:14:34,059 INFO L131 PetriNetUnfolder]: For 5471/5471 co-relation queries the response was YES. [2022-12-13 15:14:34,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27885 conditions, 10640 events. 6136/10640 cut-off events. For 5471/5471 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 64036 event pairs, 1964 based on Foata normal form. 34/9150 useless extension candidates. Maximal degree in co-relation 27051. Up to 7017 conditions per place. [2022-12-13 15:14:34,100 INFO L137 encePairwiseOnDemand]: 567/587 looper letters, 274 selfloop transitions, 65 changer transitions 3/349 dead transitions. [2022-12-13 15:14:34,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 349 transitions, 2293 flow [2022-12-13 15:14:34,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 15:14:34,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 15:14:34,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5857 transitions. [2022-12-13 15:14:34,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4338197170579957 [2022-12-13 15:14:34,107 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5857 transitions. [2022-12-13 15:14:34,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5857 transitions. [2022-12-13 15:14:34,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:34,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5857 transitions. [2022-12-13 15:14:34,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 254.65217391304347) internal successors, (5857), 23 states have internal predecessors, (5857), 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) [2022-12-13 15:14:34,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 587.0) internal successors, (14088), 24 states have internal predecessors, (14088), 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) [2022-12-13 15:14:34,121 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 587.0) internal successors, (14088), 24 states have internal predecessors, (14088), 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) [2022-12-13 15:14:34,121 INFO L175 Difference]: Start difference. First operand has 132 places, 119 transitions, 656 flow. Second operand 23 states and 5857 transitions. [2022-12-13 15:14:34,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 349 transitions, 2293 flow [2022-12-13 15:14:34,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 349 transitions, 2250 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-12-13 15:14:34,139 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 890 flow [2022-12-13 15:14:34,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=890, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2022-12-13 15:14:34,139 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 79 predicate places. [2022-12-13 15:14:34,139 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 890 flow [2022-12-13 15:14:34,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:34,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:34,140 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:34,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:14:34,140 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:34,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:34,141 INFO L85 PathProgramCache]: Analyzing trace with hash 824067741, now seen corresponding path program 1 times [2022-12-13 15:14:34,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:34,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697665485] [2022-12-13 15:14:34,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:34,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:34,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:34,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697665485] [2022-12-13 15:14:34,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697665485] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:34,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:34,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:14:34,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064426417] [2022-12-13 15:14:34,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:34,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:14:34,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:34,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:14:34,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:14:36,010 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 587 [2022-12-13 15:14:36,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 890 flow. Second operand has 14 states, 14 states have (on average 246.42857142857142) internal successors, (3450), 14 states have internal predecessors, (3450), 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) [2022-12-13 15:14:36,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:36,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 587 [2022-12-13 15:14:36,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:37,708 INFO L130 PetriNetUnfolder]: 6425/11253 cut-off events. [2022-12-13 15:14:37,708 INFO L131 PetriNetUnfolder]: For 9894/9894 co-relation queries the response was YES. [2022-12-13 15:14:37,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32203 conditions, 11253 events. 6425/11253 cut-off events. For 9894/9894 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 69556 event pairs, 1757 based on Foata normal form. 34/9905 useless extension candidates. Maximal degree in co-relation 30945. Up to 6864 conditions per place. [2022-12-13 15:14:37,755 INFO L137 encePairwiseOnDemand]: 572/587 looper letters, 189 selfloop transitions, 48 changer transitions 3/247 dead transitions. [2022-12-13 15:14:37,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 247 transitions, 1855 flow [2022-12-13 15:14:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:14:37,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:14:37,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3350 transitions. [2022-12-13 15:14:37,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43899882060018347 [2022-12-13 15:14:37,759 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3350 transitions. [2022-12-13 15:14:37,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3350 transitions. [2022-12-13 15:14:37,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:37,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3350 transitions. [2022-12-13 15:14:37,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 257.6923076923077) internal successors, (3350), 13 states have internal predecessors, (3350), 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) [2022-12-13 15:14:37,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:14:37,766 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:14:37,766 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 890 flow. Second operand 13 states and 3350 transitions. [2022-12-13 15:14:37,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 247 transitions, 1855 flow [2022-12-13 15:14:37,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 247 transitions, 1759 flow, removed 15 selfloop flow, removed 11 redundant places. [2022-12-13 15:14:37,804 INFO L231 Difference]: Finished difference. Result has 162 places, 140 transitions, 979 flow [2022-12-13 15:14:37,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=979, PETRI_PLACES=162, PETRI_TRANSITIONS=140} [2022-12-13 15:14:37,804 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2022-12-13 15:14:37,804 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 140 transitions, 979 flow [2022-12-13 15:14:37,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 246.42857142857142) internal successors, (3450), 14 states have internal predecessors, (3450), 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) [2022-12-13 15:14:37,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:37,805 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:37,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:14:37,805 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:37,805 INFO L85 PathProgramCache]: Analyzing trace with hash 824067767, now seen corresponding path program 2 times [2022-12-13 15:14:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:37,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15850939] [2022-12-13 15:14:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:38,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:38,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15850939] [2022-12-13 15:14:38,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15850939] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:38,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:38,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:14:38,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076968372] [2022-12-13 15:14:38,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:38,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:14:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:38,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:14:38,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:14:39,752 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 587 [2022-12-13 15:14:39,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 140 transitions, 979 flow. Second operand has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:39,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:39,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 587 [2022-12-13 15:14:39,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:41,780 INFO L130 PetriNetUnfolder]: 6950/12159 cut-off events. [2022-12-13 15:14:41,780 INFO L131 PetriNetUnfolder]: For 13661/13661 co-relation queries the response was YES. [2022-12-13 15:14:41,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36469 conditions, 12159 events. 6950/12159 cut-off events. For 13661/13661 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 76633 event pairs, 2201 based on Foata normal form. 34/10765 useless extension candidates. Maximal degree in co-relation 35412. Up to 7823 conditions per place. [2022-12-13 15:14:41,848 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 243 selfloop transitions, 69 changer transitions 3/322 dead transitions. [2022-12-13 15:14:41,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 322 transitions, 2423 flow [2022-12-13 15:14:41,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:14:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:14:41,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5084 transitions. [2022-12-13 15:14:41,853 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43304940374787054 [2022-12-13 15:14:41,853 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5084 transitions. [2022-12-13 15:14:41,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5084 transitions. [2022-12-13 15:14:41,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:41,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5084 transitions. [2022-12-13 15:14:41,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 254.2) internal successors, (5084), 20 states have internal predecessors, (5084), 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) [2022-12-13 15:14:41,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 587.0) internal successors, (12327), 21 states have internal predecessors, (12327), 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) [2022-12-13 15:14:41,864 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 587.0) internal successors, (12327), 21 states have internal predecessors, (12327), 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) [2022-12-13 15:14:41,864 INFO L175 Difference]: Start difference. First operand has 162 places, 140 transitions, 979 flow. Second operand 20 states and 5084 transitions. [2022-12-13 15:14:41,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 322 transitions, 2423 flow [2022-12-13 15:14:41,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 322 transitions, 2357 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-12-13 15:14:41,930 INFO L231 Difference]: Finished difference. Result has 181 places, 150 transitions, 1206 flow [2022-12-13 15:14:41,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1206, PETRI_PLACES=181, PETRI_TRANSITIONS=150} [2022-12-13 15:14:41,930 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 104 predicate places. [2022-12-13 15:14:41,930 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 150 transitions, 1206 flow [2022-12-13 15:14:41,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:41,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:41,931 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:41,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:14:41,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:41,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:41,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1422894167, now seen corresponding path program 3 times [2022-12-13 15:14:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:41,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621471183] [2022-12-13 15:14:41,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:41,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:42,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:42,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621471183] [2022-12-13 15:14:42,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621471183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:42,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:42,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:14:42,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982306766] [2022-12-13 15:14:42,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:14:42,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:14:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:14:43,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 587 [2022-12-13 15:14:43,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 150 transitions, 1206 flow. Second operand has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:43,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:43,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 587 [2022-12-13 15:14:43,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:45,598 INFO L130 PetriNetUnfolder]: 6922/12127 cut-off events. [2022-12-13 15:14:45,598 INFO L131 PetriNetUnfolder]: For 14205/14205 co-relation queries the response was YES. [2022-12-13 15:14:45,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36984 conditions, 12127 events. 6922/12127 cut-off events. For 14205/14205 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 76811 event pairs, 1601 based on Foata normal form. 34/10745 useless extension candidates. Maximal degree in co-relation 35867. Up to 6798 conditions per place. [2022-12-13 15:14:45,649 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 261 selfloop transitions, 77 changer transitions 3/348 dead transitions. [2022-12-13 15:14:45,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 348 transitions, 2729 flow [2022-12-13 15:14:45,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 15:14:45,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-13 15:14:45,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5836 transitions. [2022-12-13 15:14:45,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4322642767202429 [2022-12-13 15:14:45,654 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5836 transitions. [2022-12-13 15:14:45,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5836 transitions. [2022-12-13 15:14:45,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:45,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5836 transitions. [2022-12-13 15:14:45,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 253.7391304347826) internal successors, (5836), 23 states have internal predecessors, (5836), 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) [2022-12-13 15:14:45,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 587.0) internal successors, (14088), 24 states have internal predecessors, (14088), 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) [2022-12-13 15:14:45,666 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 587.0) internal successors, (14088), 24 states have internal predecessors, (14088), 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) [2022-12-13 15:14:45,666 INFO L175 Difference]: Start difference. First operand has 181 places, 150 transitions, 1206 flow. Second operand 23 states and 5836 transitions. [2022-12-13 15:14:45,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 348 transitions, 2729 flow [2022-12-13 15:14:45,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 348 transitions, 2642 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-12-13 15:14:45,781 INFO L231 Difference]: Finished difference. Result has 196 places, 150 transitions, 1279 flow [2022-12-13 15:14:45,781 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1106, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1279, PETRI_PLACES=196, PETRI_TRANSITIONS=150} [2022-12-13 15:14:45,781 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 119 predicate places. [2022-12-13 15:14:45,781 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 150 transitions, 1279 flow [2022-12-13 15:14:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:45,782 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:45,782 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:45,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:14:45,782 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:45,782 INFO L85 PathProgramCache]: Analyzing trace with hash -538535579, now seen corresponding path program 2 times [2022-12-13 15:14:45,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:45,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711968767] [2022-12-13 15:14:45,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:45,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:46,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:46,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:46,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711968767] [2022-12-13 15:14:46,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711968767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:46,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:46,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:14:46,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113200992] [2022-12-13 15:14:46,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:46,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:14:46,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:46,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:14:46,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:14:47,780 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 587 [2022-12-13 15:14:47,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 150 transitions, 1279 flow. Second operand has 15 states, 15 states have (on average 240.33333333333334) internal successors, (3605), 15 states have internal predecessors, (3605), 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) [2022-12-13 15:14:47,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:47,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 587 [2022-12-13 15:14:47,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:49,730 INFO L130 PetriNetUnfolder]: 6924/12163 cut-off events. [2022-12-13 15:14:49,730 INFO L131 PetriNetUnfolder]: For 14587/14587 co-relation queries the response was YES. [2022-12-13 15:14:49,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37881 conditions, 12163 events. 6924/12163 cut-off events. For 14587/14587 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 77677 event pairs, 1618 based on Foata normal form. 34/10781 useless extension candidates. Maximal degree in co-relation 36779. Up to 6534 conditions per place. [2022-12-13 15:14:49,780 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 207 selfloop transitions, 71 changer transitions 3/288 dead transitions. [2022-12-13 15:14:49,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 288 transitions, 2437 flow [2022-12-13 15:14:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:14:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:14:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4013 transitions. [2022-12-13 15:14:49,784 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.427278534923339 [2022-12-13 15:14:49,784 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4013 transitions. [2022-12-13 15:14:49,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4013 transitions. [2022-12-13 15:14:49,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:49,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4013 transitions. [2022-12-13 15:14:49,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 250.8125) internal successors, (4013), 16 states have internal predecessors, (4013), 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) [2022-12-13 15:14:49,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:14:49,792 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:14:49,792 INFO L175 Difference]: Start difference. First operand has 196 places, 150 transitions, 1279 flow. Second operand 16 states and 4013 transitions. [2022-12-13 15:14:49,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 288 transitions, 2437 flow [2022-12-13 15:14:49,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 288 transitions, 2292 flow, removed 2 selfloop flow, removed 21 redundant places. [2022-12-13 15:14:49,910 INFO L231 Difference]: Finished difference. Result has 193 places, 154 transitions, 1346 flow [2022-12-13 15:14:49,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1346, PETRI_PLACES=193, PETRI_TRANSITIONS=154} [2022-12-13 15:14:49,910 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 116 predicate places. [2022-12-13 15:14:49,910 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 154 transitions, 1346 flow [2022-12-13 15:14:49,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 240.33333333333334) internal successors, (3605), 15 states have internal predecessors, (3605), 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) [2022-12-13 15:14:49,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:49,911 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:49,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:14:49,911 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:49,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:49,911 INFO L85 PathProgramCache]: Analyzing trace with hash -538201683, now seen corresponding path program 4 times [2022-12-13 15:14:49,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:49,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548127009] [2022-12-13 15:14:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:49,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:50,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:50,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:50,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548127009] [2022-12-13 15:14:50,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548127009] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:50,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:50,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:14:50,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001921398] [2022-12-13 15:14:50,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:50,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:14:50,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:50,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:14:50,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:14:51,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 587 [2022-12-13 15:14:51,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 154 transitions, 1346 flow. Second operand has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:51,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:51,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 587 [2022-12-13 15:14:51,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:53,526 INFO L130 PetriNetUnfolder]: 6924/12171 cut-off events. [2022-12-13 15:14:53,527 INFO L131 PetriNetUnfolder]: For 19438/19438 co-relation queries the response was YES. [2022-12-13 15:14:53,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39076 conditions, 12171 events. 6924/12171 cut-off events. For 19438/19438 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 77861 event pairs, 1632 based on Foata normal form. 34/10789 useless extension candidates. Maximal degree in co-relation 37577. Up to 6620 conditions per place. [2022-12-13 15:14:53,583 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 215 selfloop transitions, 72 changer transitions 3/297 dead transitions. [2022-12-13 15:14:53,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 297 transitions, 2538 flow [2022-12-13 15:14:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:14:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-13 15:14:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4327 transitions. [2022-12-13 15:14:53,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43361058222266763 [2022-12-13 15:14:53,587 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4327 transitions. [2022-12-13 15:14:53,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4327 transitions. [2022-12-13 15:14:53,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:53,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4327 transitions. [2022-12-13 15:14:53,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 254.52941176470588) internal successors, (4327), 17 states have internal predecessors, (4327), 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) [2022-12-13 15:14:53,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 587.0) internal successors, (10566), 18 states have internal predecessors, (10566), 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) [2022-12-13 15:14:53,596 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 587.0) internal successors, (10566), 18 states have internal predecessors, (10566), 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) [2022-12-13 15:14:53,596 INFO L175 Difference]: Start difference. First operand has 193 places, 154 transitions, 1346 flow. Second operand 17 states and 4327 transitions. [2022-12-13 15:14:53,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 297 transitions, 2538 flow [2022-12-13 15:14:53,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 297 transitions, 2434 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-12-13 15:14:53,753 INFO L231 Difference]: Finished difference. Result has 199 places, 154 transitions, 1401 flow [2022-12-13 15:14:53,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1401, PETRI_PLACES=199, PETRI_TRANSITIONS=154} [2022-12-13 15:14:53,753 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 122 predicate places. [2022-12-13 15:14:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 154 transitions, 1401 flow [2022-12-13 15:14:53,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 244.33333333333334) internal successors, (3665), 15 states have internal predecessors, (3665), 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) [2022-12-13 15:14:53,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:53,754 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:53,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:14:53,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:53,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1362449649, now seen corresponding path program 1 times [2022-12-13 15:14:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336995472] [2022-12-13 15:14:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:53,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336995472] [2022-12-13 15:14:53,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336995472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:53,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:53,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500575473] [2022-12-13 15:14:53,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:53,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:53,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:53,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:53,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:53,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 286 out of 587 [2022-12-13 15:14:53,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 154 transitions, 1401 flow. Second operand has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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) [2022-12-13 15:14:53,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:53,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 286 of 587 [2022-12-13 15:14:53,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:55,004 INFO L130 PetriNetUnfolder]: 6133/11049 cut-off events. [2022-12-13 15:14:55,004 INFO L131 PetriNetUnfolder]: For 20347/20437 co-relation queries the response was YES. [2022-12-13 15:14:55,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 11049 events. 6133/11049 cut-off events. For 20347/20437 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 71536 event pairs, 2258 based on Foata normal form. 90/10040 useless extension candidates. Maximal degree in co-relation 34496. Up to 8350 conditions per place. [2022-12-13 15:14:55,056 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 147 selfloop transitions, 1 changer transitions 0/162 dead transitions. [2022-12-13 15:14:55,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 162 transitions, 1740 flow [2022-12-13 15:14:55,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 928 transitions. [2022-12-13 15:14:55,058 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5269733106189665 [2022-12-13 15:14:55,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 928 transitions. [2022-12-13 15:14:55,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 928 transitions. [2022-12-13 15:14:55,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:55,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 928 transitions. [2022-12-13 15:14:55,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 309.3333333333333) internal successors, (928), 3 states have internal predecessors, (928), 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) [2022-12-13 15:14:55,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:55,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:55,060 INFO L175 Difference]: Start difference. First operand has 199 places, 154 transitions, 1401 flow. Second operand 3 states and 928 transitions. [2022-12-13 15:14:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 162 transitions, 1740 flow [2022-12-13 15:14:55,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 162 transitions, 1582 flow, removed 5 selfloop flow, removed 17 redundant places. [2022-12-13 15:14:55,212 INFO L231 Difference]: Finished difference. Result has 182 places, 152 transitions, 1237 flow [2022-12-13 15:14:55,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1237, PETRI_PLACES=182, PETRI_TRANSITIONS=152} [2022-12-13 15:14:55,212 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 105 predicate places. [2022-12-13 15:14:55,212 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 152 transitions, 1237 flow [2022-12-13 15:14:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 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) [2022-12-13 15:14:55,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:55,213 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:55,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:14:55,213 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1362449747, now seen corresponding path program 1 times [2022-12-13 15:14:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525058544] [2022-12-13 15:14:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:55,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:55,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 15:14:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525058544] [2022-12-13 15:14:55,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525058544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:55,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:55,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:14:55,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98314843] [2022-12-13 15:14:55,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:14:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:14:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:14:55,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 587 [2022-12-13 15:14:55,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 152 transitions, 1237 flow. Second operand has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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) [2022-12-13 15:14:55,247 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:55,247 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 587 [2022-12-13 15:14:55,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:56,588 INFO L130 PetriNetUnfolder]: 5738/10373 cut-off events. [2022-12-13 15:14:56,588 INFO L131 PetriNetUnfolder]: For 17696/17786 co-relation queries the response was YES. [2022-12-13 15:14:56,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32835 conditions, 10373 events. 5738/10373 cut-off events. For 17696/17786 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 66333 event pairs, 2288 based on Foata normal form. 194/9677 useless extension candidates. Maximal degree in co-relation 31419. Up to 6407 conditions per place. [2022-12-13 15:14:56,634 INFO L137 encePairwiseOnDemand]: 582/587 looper letters, 161 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2022-12-13 15:14:56,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 179 transitions, 1664 flow [2022-12-13 15:14:56,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:14:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:14:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 941 transitions. [2022-12-13 15:14:56,636 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5343554798409994 [2022-12-13 15:14:56,636 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 941 transitions. [2022-12-13 15:14:56,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 941 transitions. [2022-12-13 15:14:56,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:56,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 941 transitions. [2022-12-13 15:14:56,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 313.6666666666667) internal successors, (941), 3 states have internal predecessors, (941), 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) [2022-12-13 15:14:56,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:56,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:14:56,639 INFO L175 Difference]: Start difference. First operand has 182 places, 152 transitions, 1237 flow. Second operand 3 states and 941 transitions. [2022-12-13 15:14:56,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 179 transitions, 1664 flow [2022-12-13 15:14:56,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 179 transitions, 1663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:14:56,788 INFO L231 Difference]: Finished difference. Result has 182 places, 151 transitions, 1244 flow [2022-12-13 15:14:56,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1244, PETRI_PLACES=182, PETRI_TRANSITIONS=151} [2022-12-13 15:14:56,789 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 105 predicate places. [2022-12-13 15:14:56,789 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 151 transitions, 1244 flow [2022-12-13 15:14:56,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 291.0) internal successors, (873), 3 states have internal predecessors, (873), 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) [2022-12-13 15:14:56,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:14:56,789 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:14:56,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:14:56,789 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:14:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:14:56,790 INFO L85 PathProgramCache]: Analyzing trace with hash -2137179593, now seen corresponding path program 1 times [2022-12-13 15:14:56,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:14:56,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488456220] [2022-12-13 15:14:56,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:14:56,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:14:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:14:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:14:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:14:57,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488456220] [2022-12-13 15:14:57,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488456220] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:14:57,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:14:57,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:14:57,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087857687] [2022-12-13 15:14:57,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:14:57,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:14:57,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:14:57,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:14:57,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:14:57,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 587 [2022-12-13 15:14:57,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 151 transitions, 1244 flow. Second operand has 12 states, 12 states have (on average 255.83333333333334) internal successors, (3070), 12 states have internal predecessors, (3070), 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) [2022-12-13 15:14:57,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:14:57,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 587 [2022-12-13 15:14:57,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:14:59,686 INFO L130 PetriNetUnfolder]: 6822/12089 cut-off events. [2022-12-13 15:14:59,686 INFO L131 PetriNetUnfolder]: For 20798/20798 co-relation queries the response was YES. [2022-12-13 15:14:59,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39753 conditions, 12089 events. 6822/12089 cut-off events. For 20798/20798 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 77157 event pairs, 5019 based on Foata normal form. 0/11159 useless extension candidates. Maximal degree in co-relation 38356. Up to 10096 conditions per place. [2022-12-13 15:14:59,757 INFO L137 encePairwiseOnDemand]: 573/587 looper letters, 195 selfloop transitions, 32 changer transitions 3/237 dead transitions. [2022-12-13 15:14:59,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 237 transitions, 2137 flow [2022-12-13 15:14:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:14:59,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:14:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3704 transitions. [2022-12-13 15:14:59,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4507179362375274 [2022-12-13 15:14:59,763 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3704 transitions. [2022-12-13 15:14:59,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3704 transitions. [2022-12-13 15:14:59,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:14:59,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3704 transitions. [2022-12-13 15:14:59,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 264.57142857142856) internal successors, (3704), 14 states have internal predecessors, (3704), 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) [2022-12-13 15:14:59,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:14:59,774 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:14:59,774 INFO L175 Difference]: Start difference. First operand has 182 places, 151 transitions, 1244 flow. Second operand 14 states and 3704 transitions. [2022-12-13 15:14:59,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 237 transitions, 2137 flow [2022-12-13 15:15:00,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 237 transitions, 2129 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:15:00,029 INFO L231 Difference]: Finished difference. Result has 201 places, 159 transitions, 1435 flow [2022-12-13 15:15:00,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1435, PETRI_PLACES=201, PETRI_TRANSITIONS=159} [2022-12-13 15:15:00,030 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 124 predicate places. [2022-12-13 15:15:00,030 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 159 transitions, 1435 flow [2022-12-13 15:15:00,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 255.83333333333334) internal successors, (3070), 12 states have internal predecessors, (3070), 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) [2022-12-13 15:15:00,030 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:00,030 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:00,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 15:15:00,031 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:00,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:00,031 INFO L85 PathProgramCache]: Analyzing trace with hash -2137179591, now seen corresponding path program 1 times [2022-12-13 15:15:00,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:00,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728234383] [2022-12-13 15:15:00,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:00,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:00,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:00,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:00,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728234383] [2022-12-13 15:15:00,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728234383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:00,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:00,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:15:00,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038819404] [2022-12-13 15:15:00,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:00,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:15:00,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:00,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:15:00,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:15:01,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 587 [2022-12-13 15:15:01,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 159 transitions, 1435 flow. Second operand has 12 states, 12 states have (on average 251.83333333333334) internal successors, (3022), 12 states have internal predecessors, (3022), 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) [2022-12-13 15:15:01,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:01,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 587 [2022-12-13 15:15:01,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:03,187 INFO L130 PetriNetUnfolder]: 6770/11989 cut-off events. [2022-12-13 15:15:03,187 INFO L131 PetriNetUnfolder]: For 21628/21628 co-relation queries the response was YES. [2022-12-13 15:15:03,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40244 conditions, 11989 events. 6770/11989 cut-off events. For 21628/21628 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 76151 event pairs, 5067 based on Foata normal form. 0/11335 useless extension candidates. Maximal degree in co-relation 38806. Up to 10094 conditions per place. [2022-12-13 15:15:03,248 INFO L137 encePairwiseOnDemand]: 574/587 looper letters, 194 selfloop transitions, 32 changer transitions 3/236 dead transitions. [2022-12-13 15:15:03,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 236 transitions, 2239 flow [2022-12-13 15:15:03,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:15:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:15:03,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3395 transitions. [2022-12-13 15:15:03,252 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4448958196828725 [2022-12-13 15:15:03,252 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3395 transitions. [2022-12-13 15:15:03,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3395 transitions. [2022-12-13 15:15:03,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:03,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3395 transitions. [2022-12-13 15:15:03,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 261.15384615384613) internal successors, (3395), 13 states have internal predecessors, (3395), 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) [2022-12-13 15:15:03,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:15:03,261 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:15:03,261 INFO L175 Difference]: Start difference. First operand has 201 places, 159 transitions, 1435 flow. Second operand 13 states and 3395 transitions. [2022-12-13 15:15:03,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 236 transitions, 2239 flow [2022-12-13 15:15:03,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 236 transitions, 2201 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-13 15:15:03,505 INFO L231 Difference]: Finished difference. Result has 208 places, 159 transitions, 1468 flow [2022-12-13 15:15:03,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1468, PETRI_PLACES=208, PETRI_TRANSITIONS=159} [2022-12-13 15:15:03,505 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 131 predicate places. [2022-12-13 15:15:03,505 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 159 transitions, 1468 flow [2022-12-13 15:15:03,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 251.83333333333334) internal successors, (3022), 12 states have internal predecessors, (3022), 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) [2022-12-13 15:15:03,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:03,506 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:03,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 15:15:03,506 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:03,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:03,506 INFO L85 PathProgramCache]: Analyzing trace with hash 482433362, now seen corresponding path program 1 times [2022-12-13 15:15:03,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:03,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714777212] [2022-12-13 15:15:03,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:03,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:04,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:04,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:04,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714777212] [2022-12-13 15:15:04,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714777212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:04,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:04,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:15:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025785945] [2022-12-13 15:15:04,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:04,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:15:04,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:15:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:15:04,988 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 587 [2022-12-13 15:15:04,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 159 transitions, 1468 flow. Second operand has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:04,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:04,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 587 [2022-12-13 15:15:04,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:07,471 INFO L130 PetriNetUnfolder]: 8352/14678 cut-off events. [2022-12-13 15:15:07,471 INFO L131 PetriNetUnfolder]: For 24608/24608 co-relation queries the response was YES. [2022-12-13 15:15:07,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47682 conditions, 14678 events. 8352/14678 cut-off events. For 24608/24608 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 96514 event pairs, 2479 based on Foata normal form. 75/14067 useless extension candidates. Maximal degree in co-relation 46230. Up to 6764 conditions per place. [2022-12-13 15:15:07,548 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 229 selfloop transitions, 66 changer transitions 0/302 dead transitions. [2022-12-13 15:15:07,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 302 transitions, 2638 flow [2022-12-13 15:15:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:15:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:15:07,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3155 transitions. [2022-12-13 15:15:07,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44789892106757523 [2022-12-13 15:15:07,552 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3155 transitions. [2022-12-13 15:15:07,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3155 transitions. [2022-12-13 15:15:07,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:07,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3155 transitions. [2022-12-13 15:15:07,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.9166666666667) internal successors, (3155), 12 states have internal predecessors, (3155), 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) [2022-12-13 15:15:07,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:07,560 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:07,560 INFO L175 Difference]: Start difference. First operand has 208 places, 159 transitions, 1468 flow. Second operand 12 states and 3155 transitions. [2022-12-13 15:15:07,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 302 transitions, 2638 flow [2022-12-13 15:15:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 302 transitions, 2574 flow, removed 0 selfloop flow, removed 12 redundant places. [2022-12-13 15:15:07,810 INFO L231 Difference]: Finished difference. Result has 211 places, 172 transitions, 1687 flow [2022-12-13 15:15:07,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1687, PETRI_PLACES=211, PETRI_TRANSITIONS=172} [2022-12-13 15:15:07,810 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 134 predicate places. [2022-12-13 15:15:07,810 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 172 transitions, 1687 flow [2022-12-13 15:15:07,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:07,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:07,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 15:15:07,811 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:07,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:07,811 INFO L85 PathProgramCache]: Analyzing trace with hash 528692030, now seen corresponding path program 1 times [2022-12-13 15:15:07,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:07,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42976699] [2022-12-13 15:15:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:07,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:08,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:08,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:08,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42976699] [2022-12-13 15:15:08,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42976699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:08,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:08,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:15:08,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53152097] [2022-12-13 15:15:08,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:08,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:15:08,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:08,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:15:08,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:15:09,008 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 587 [2022-12-13 15:15:09,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 172 transitions, 1687 flow. Second operand has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:09,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:09,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 587 [2022-12-13 15:15:09,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:11,324 INFO L130 PetriNetUnfolder]: 6920/12231 cut-off events. [2022-12-13 15:15:11,324 INFO L131 PetriNetUnfolder]: For 29847/29847 co-relation queries the response was YES. [2022-12-13 15:15:11,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43305 conditions, 12231 events. 6920/12231 cut-off events. For 29847/29847 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 77822 event pairs, 3501 based on Foata normal form. 68/11765 useless extension candidates. Maximal degree in co-relation 41819. Up to 6647 conditions per place. [2022-12-13 15:15:11,412 INFO L137 encePairwiseOnDemand]: 573/587 looper letters, 227 selfloop transitions, 60 changer transitions 3/297 dead transitions. [2022-12-13 15:15:11,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 297 transitions, 2749 flow [2022-12-13 15:15:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:15:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 15:15:11,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 4145 transitions. [2022-12-13 15:15:11,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44133304940374785 [2022-12-13 15:15:11,417 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 4145 transitions. [2022-12-13 15:15:11,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 4145 transitions. [2022-12-13 15:15:11,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:11,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 4145 transitions. [2022-12-13 15:15:11,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 259.0625) internal successors, (4145), 16 states have internal predecessors, (4145), 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) [2022-12-13 15:15:11,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:15:11,428 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 587.0) internal successors, (9979), 17 states have internal predecessors, (9979), 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) [2022-12-13 15:15:11,428 INFO L175 Difference]: Start difference. First operand has 211 places, 172 transitions, 1687 flow. Second operand 16 states and 4145 transitions. [2022-12-13 15:15:11,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 297 transitions, 2749 flow [2022-12-13 15:15:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 297 transitions, 2613 flow, removed 5 selfloop flow, removed 13 redundant places. [2022-12-13 15:15:11,822 INFO L231 Difference]: Finished difference. Result has 214 places, 160 transitions, 1578 flow [2022-12-13 15:15:11,822 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1445, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1578, PETRI_PLACES=214, PETRI_TRANSITIONS=160} [2022-12-13 15:15:11,822 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 137 predicate places. [2022-12-13 15:15:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 160 transitions, 1578 flow [2022-12-13 15:15:11,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:11,823 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:11,823 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 15:15:11,823 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:11,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:11,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1888105342, now seen corresponding path program 2 times [2022-12-13 15:15:11,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:11,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604286940] [2022-12-13 15:15:11,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:11,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:12,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:12,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604286940] [2022-12-13 15:15:12,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604286940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:12,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:12,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:15:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983680271] [2022-12-13 15:15:12,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:12,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:15:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:15:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:15:13,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 587 [2022-12-13 15:15:13,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 160 transitions, 1578 flow. Second operand has 12 states, 12 states have (on average 244.91666666666666) internal successors, (2939), 12 states have internal predecessors, (2939), 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) [2022-12-13 15:15:13,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:13,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 587 [2022-12-13 15:15:13,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:15,783 INFO L130 PetriNetUnfolder]: 8228/14554 cut-off events. [2022-12-13 15:15:15,783 INFO L131 PetriNetUnfolder]: For 31714/31714 co-relation queries the response was YES. [2022-12-13 15:15:15,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49271 conditions, 14554 events. 8228/14554 cut-off events. For 31714/31714 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 95563 event pairs, 1149 based on Foata normal form. 75/13949 useless extension candidates. Maximal degree in co-relation 47797. Up to 5156 conditions per place. [2022-12-13 15:15:15,881 INFO L137 encePairwiseOnDemand]: 572/587 looper letters, 229 selfloop transitions, 58 changer transitions 3/297 dead transitions. [2022-12-13 15:15:15,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 297 transitions, 2727 flow [2022-12-13 15:15:15,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:15:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:15:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3100 transitions. [2022-12-13 15:15:15,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4400908574673481 [2022-12-13 15:15:15,886 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3100 transitions. [2022-12-13 15:15:15,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3100 transitions. [2022-12-13 15:15:15,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:15,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3100 transitions. [2022-12-13 15:15:15,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 258.3333333333333) internal successors, (3100), 12 states have internal predecessors, (3100), 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) [2022-12-13 15:15:15,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:15,895 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:15,895 INFO L175 Difference]: Start difference. First operand has 214 places, 160 transitions, 1578 flow. Second operand 12 states and 3100 transitions. [2022-12-13 15:15:15,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 297 transitions, 2727 flow [2022-12-13 15:15:16,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 297 transitions, 2607 flow, removed 0 selfloop flow, removed 15 redundant places. [2022-12-13 15:15:16,217 INFO L231 Difference]: Finished difference. Result has 214 places, 173 transitions, 1731 flow [2022-12-13 15:15:16,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1731, PETRI_PLACES=214, PETRI_TRANSITIONS=173} [2022-12-13 15:15:16,217 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 137 predicate places. [2022-12-13 15:15:16,217 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 173 transitions, 1731 flow [2022-12-13 15:15:16,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 244.91666666666666) internal successors, (2939), 12 states have internal predecessors, (2939), 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) [2022-12-13 15:15:16,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:16,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:16,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 15:15:16,218 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:16,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:16,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1888105340, now seen corresponding path program 2 times [2022-12-13 15:15:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:16,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939108938] [2022-12-13 15:15:16,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:16,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:16,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939108938] [2022-12-13 15:15:16,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939108938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:16,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:16,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:15:16,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997972762] [2022-12-13 15:15:16,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:16,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:15:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:15:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:15:17,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 587 [2022-12-13 15:15:17,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 173 transitions, 1731 flow. Second operand has 13 states, 13 states have (on average 252.76923076923077) internal successors, (3286), 13 states have internal predecessors, (3286), 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) [2022-12-13 15:15:17,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:17,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 587 [2022-12-13 15:15:17,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:20,319 INFO L130 PetriNetUnfolder]: 9803/17243 cut-off events. [2022-12-13 15:15:20,319 INFO L131 PetriNetUnfolder]: For 44407/44407 co-relation queries the response was YES. [2022-12-13 15:15:20,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60206 conditions, 17243 events. 9803/17243 cut-off events. For 44407/44407 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 116842 event pairs, 2361 based on Foata normal form. 150/16593 useless extension candidates. Maximal degree in co-relation 51646. Up to 7975 conditions per place. [2022-12-13 15:15:20,532 INFO L137 encePairwiseOnDemand]: 568/587 looper letters, 239 selfloop transitions, 72 changer transitions 0/318 dead transitions. [2022-12-13 15:15:20,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 318 transitions, 3020 flow [2022-12-13 15:15:20,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:15:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:15:20,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3208 transitions. [2022-12-13 15:15:20,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4554230550823396 [2022-12-13 15:15:20,535 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3208 transitions. [2022-12-13 15:15:20,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3208 transitions. [2022-12-13 15:15:20,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:20,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3208 transitions. [2022-12-13 15:15:20,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 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) [2022-12-13 15:15:20,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:20,541 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:20,541 INFO L175 Difference]: Start difference. First operand has 214 places, 173 transitions, 1731 flow. Second operand 12 states and 3208 transitions. [2022-12-13 15:15:20,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 318 transitions, 3020 flow [2022-12-13 15:15:21,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 318 transitions, 2918 flow, removed 25 selfloop flow, removed 6 redundant places. [2022-12-13 15:15:21,039 INFO L231 Difference]: Finished difference. Result has 223 places, 187 transitions, 2018 flow [2022-12-13 15:15:21,039 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2018, PETRI_PLACES=223, PETRI_TRANSITIONS=187} [2022-12-13 15:15:21,039 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 146 predicate places. [2022-12-13 15:15:21,039 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 187 transitions, 2018 flow [2022-12-13 15:15:21,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 252.76923076923077) internal successors, (3286), 13 states have internal predecessors, (3286), 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) [2022-12-13 15:15:21,040 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:21,040 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:21,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 15:15:21,040 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash -463697642, now seen corresponding path program 3 times [2022-12-13 15:15:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397911411] [2022-12-13 15:15:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:21,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:21,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:21,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:21,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397911411] [2022-12-13 15:15:21,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397911411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:21,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 15:15:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287487403] [2022-12-13 15:15:21,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:21,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 15:15:21,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:21,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 15:15:21,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:15:22,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 587 [2022-12-13 15:15:22,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 187 transitions, 2018 flow. Second operand has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:22,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:22,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 587 [2022-12-13 15:15:22,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:25,493 INFO L130 PetriNetUnfolder]: 10311/18148 cut-off events. [2022-12-13 15:15:25,493 INFO L131 PetriNetUnfolder]: For 55999/56011 co-relation queries the response was YES. [2022-12-13 15:15:25,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65229 conditions, 18148 events. 10311/18148 cut-off events. For 55999/56011 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 124426 event pairs, 2663 based on Foata normal form. 68/17354 useless extension candidates. Maximal degree in co-relation 55961. Up to 9847 conditions per place. [2022-12-13 15:15:25,618 INFO L137 encePairwiseOnDemand]: 567/587 looper letters, 243 selfloop transitions, 75 changer transitions 3/328 dead transitions. [2022-12-13 15:15:25,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 328 transitions, 3289 flow [2022-12-13 15:15:25,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:15:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:15:25,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3647 transitions. [2022-12-13 15:15:25,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4437819420783646 [2022-12-13 15:15:25,622 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3647 transitions. [2022-12-13 15:15:25,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3647 transitions. [2022-12-13 15:15:25,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:25,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3647 transitions. [2022-12-13 15:15:25,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 260.5) internal successors, (3647), 14 states have internal predecessors, (3647), 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) [2022-12-13 15:15:25,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:15:25,628 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:15:25,628 INFO L175 Difference]: Start difference. First operand has 223 places, 187 transitions, 2018 flow. Second operand 14 states and 3647 transitions. [2022-12-13 15:15:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 328 transitions, 3289 flow [2022-12-13 15:15:26,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 328 transitions, 3203 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-12-13 15:15:26,228 INFO L231 Difference]: Finished difference. Result has 231 places, 196 transitions, 2221 flow [2022-12-13 15:15:26,228 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2221, PETRI_PLACES=231, PETRI_TRANSITIONS=196} [2022-12-13 15:15:26,228 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2022-12-13 15:15:26,228 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 196 transitions, 2221 flow [2022-12-13 15:15:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 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) [2022-12-13 15:15:26,229 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:26,229 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 15:15:26,229 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash -452399368, now seen corresponding path program 4 times [2022-12-13 15:15:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:26,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341221573] [2022-12-13 15:15:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:26,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341221573] [2022-12-13 15:15:26,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341221573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:26,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:26,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:15:26,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739927409] [2022-12-13 15:15:26,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:26,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:15:26,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:26,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:15:26,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:15:27,707 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 587 [2022-12-13 15:15:27,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 196 transitions, 2221 flow. Second operand has 14 states, 14 states have (on average 252.64285714285714) internal successors, (3537), 14 states have internal predecessors, (3537), 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) [2022-12-13 15:15:27,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:27,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 587 [2022-12-13 15:15:27,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:30,057 INFO L130 PetriNetUnfolder]: 7688/13702 cut-off events. [2022-12-13 15:15:30,057 INFO L131 PetriNetUnfolder]: For 50250/50250 co-relation queries the response was YES. [2022-12-13 15:15:30,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52289 conditions, 13702 events. 7688/13702 cut-off events. For 50250/50250 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 89558 event pairs, 1705 based on Foata normal form. 136/13262 useless extension candidates. Maximal degree in co-relation 49369. Up to 5513 conditions per place. [2022-12-13 15:15:30,158 INFO L137 encePairwiseOnDemand]: 574/587 looper letters, 201 selfloop transitions, 58 changer transitions 3/269 dead transitions. [2022-12-13 15:15:30,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 269 transitions, 2879 flow [2022-12-13 15:15:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:15:30,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 15:15:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3166 transitions. [2022-12-13 15:15:30,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4494605337876207 [2022-12-13 15:15:30,161 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3166 transitions. [2022-12-13 15:15:30,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3166 transitions. [2022-12-13 15:15:30,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:30,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3166 transitions. [2022-12-13 15:15:30,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.8333333333333) internal successors, (3166), 12 states have internal predecessors, (3166), 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) [2022-12-13 15:15:30,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:30,167 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 587.0) internal successors, (7631), 13 states have internal predecessors, (7631), 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) [2022-12-13 15:15:30,167 INFO L175 Difference]: Start difference. First operand has 231 places, 196 transitions, 2221 flow. Second operand 12 states and 3166 transitions. [2022-12-13 15:15:30,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 269 transitions, 2879 flow [2022-12-13 15:15:30,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 269 transitions, 2649 flow, removed 11 selfloop flow, removed 20 redundant places. [2022-12-13 15:15:30,714 INFO L231 Difference]: Finished difference. Result has 222 places, 171 transitions, 1840 flow [2022-12-13 15:15:30,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1840, PETRI_PLACES=222, PETRI_TRANSITIONS=171} [2022-12-13 15:15:30,714 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2022-12-13 15:15:30,714 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 171 transitions, 1840 flow [2022-12-13 15:15:30,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 252.64285714285714) internal successors, (3537), 14 states have internal predecessors, (3537), 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) [2022-12-13 15:15:30,714 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:30,714 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:30,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 15:15:30,715 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:30,715 INFO L85 PathProgramCache]: Analyzing trace with hash -378508767, now seen corresponding path program 1 times [2022-12-13 15:15:30,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:30,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580302503] [2022-12-13 15:15:30,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:30,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:30,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:30,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580302503] [2022-12-13 15:15:30,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580302503] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:30,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:30,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:15:30,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805389187] [2022-12-13 15:15:30,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:30,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:15:30,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:30,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:15:30,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:15:30,760 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 587 [2022-12-13 15:15:30,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 171 transitions, 1840 flow. Second operand has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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) [2022-12-13 15:15:30,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:30,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 587 [2022-12-13 15:15:30,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:31,974 INFO L130 PetriNetUnfolder]: 5222/9475 cut-off events. [2022-12-13 15:15:31,974 INFO L131 PetriNetUnfolder]: For 39524/39524 co-relation queries the response was YES. [2022-12-13 15:15:32,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38722 conditions, 9475 events. 5222/9475 cut-off events. For 39524/39524 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 61812 event pairs, 3911 based on Foata normal form. 82/9405 useless extension candidates. Maximal degree in co-relation 36846. Up to 7524 conditions per place. [2022-12-13 15:15:32,038 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 160 selfloop transitions, 2 changer transitions 3/177 dead transitions. [2022-12-13 15:15:32,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 177 transitions, 2167 flow [2022-12-13 15:15:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:15:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:15:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 935 transitions. [2022-12-13 15:15:32,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5309483248154457 [2022-12-13 15:15:32,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 935 transitions. [2022-12-13 15:15:32,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 935 transitions. [2022-12-13 15:15:32,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:32,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 935 transitions. [2022-12-13 15:15:32,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 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) [2022-12-13 15:15:32,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:15:32,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:15:32,041 INFO L175 Difference]: Start difference. First operand has 222 places, 171 transitions, 1840 flow. Second operand 3 states and 935 transitions. [2022-12-13 15:15:32,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 177 transitions, 2167 flow [2022-12-13 15:15:32,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 177 transitions, 2036 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-12-13 15:15:32,597 INFO L231 Difference]: Finished difference. Result has 213 places, 161 transitions, 1640 flow [2022-12-13 15:15:32,597 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1640, PETRI_PLACES=213, PETRI_TRANSITIONS=161} [2022-12-13 15:15:32,597 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2022-12-13 15:15:32,597 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 161 transitions, 1640 flow [2022-12-13 15:15:32,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 296.6666666666667) internal successors, (890), 3 states have internal predecessors, (890), 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) [2022-12-13 15:15:32,598 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:32,598 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:32,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-13 15:15:32,598 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:32,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:32,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1332010480, now seen corresponding path program 1 times [2022-12-13 15:15:32,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:32,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150575410] [2022-12-13 15:15:32,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:32,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:32,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:32,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:32,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150575410] [2022-12-13 15:15:32,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150575410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:32,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:32,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:15:32,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670466800] [2022-12-13 15:15:32,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:32,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:15:32,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:32,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:15:32,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:15:32,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 587 [2022-12-13 15:15:32,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 161 transitions, 1640 flow. Second operand has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 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) [2022-12-13 15:15:32,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:32,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 587 [2022-12-13 15:15:32,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:33,644 INFO L130 PetriNetUnfolder]: 3227/6172 cut-off events. [2022-12-13 15:15:33,644 INFO L131 PetriNetUnfolder]: For 23301/23301 co-relation queries the response was YES. [2022-12-13 15:15:33,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25081 conditions, 6172 events. 3227/6172 cut-off events. For 23301/23301 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 38242 event pairs, 863 based on Foata normal form. 624/6674 useless extension candidates. Maximal degree in co-relation 24176. Up to 4524 conditions per place. [2022-12-13 15:15:33,680 INFO L137 encePairwiseOnDemand]: 581/587 looper letters, 154 selfloop transitions, 8 changer transitions 1/175 dead transitions. [2022-12-13 15:15:33,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 175 transitions, 2045 flow [2022-12-13 15:15:33,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:15:33,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 15:15:33,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 925 transitions. [2022-12-13 15:15:33,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5252697331061896 [2022-12-13 15:15:33,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 925 transitions. [2022-12-13 15:15:33,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 925 transitions. [2022-12-13 15:15:33,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:33,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 925 transitions. [2022-12-13 15:15:33,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 308.3333333333333) internal successors, (925), 3 states have internal predecessors, (925), 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) [2022-12-13 15:15:33,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:15:33,683 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 587.0) internal successors, (2348), 4 states have internal predecessors, (2348), 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) [2022-12-13 15:15:33,683 INFO L175 Difference]: Start difference. First operand has 213 places, 161 transitions, 1640 flow. Second operand 3 states and 925 transitions. [2022-12-13 15:15:33,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 175 transitions, 2045 flow [2022-12-13 15:15:33,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 175 transitions, 2041 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 15:15:33,954 INFO L231 Difference]: Finished difference. Result has 213 places, 160 transitions, 1650 flow [2022-12-13 15:15:33,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1650, PETRI_PLACES=213, PETRI_TRANSITIONS=160} [2022-12-13 15:15:33,954 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2022-12-13 15:15:33,955 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 160 transitions, 1650 flow [2022-12-13 15:15:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 294.3333333333333) internal successors, (883), 3 states have internal predecessors, (883), 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) [2022-12-13 15:15:33,955 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:33,955 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-13 15:15:33,955 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:33,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:33,955 INFO L85 PathProgramCache]: Analyzing trace with hash -723867615, now seen corresponding path program 1 times [2022-12-13 15:15:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:33,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48932572] [2022-12-13 15:15:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:34,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:34,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48932572] [2022-12-13 15:15:34,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48932572] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:34,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:34,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:15:34,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211907353] [2022-12-13 15:15:34,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:34,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:15:34,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:34,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:15:34,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:15:34,723 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 587 [2022-12-13 15:15:34,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 160 transitions, 1650 flow. Second operand has 11 states, 11 states have (on average 260.90909090909093) internal successors, (2870), 11 states have internal predecessors, (2870), 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) [2022-12-13 15:15:34,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:34,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 587 [2022-12-13 15:15:34,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:36,230 INFO L130 PetriNetUnfolder]: 3947/7599 cut-off events. [2022-12-13 15:15:36,230 INFO L131 PetriNetUnfolder]: For 26687/26687 co-relation queries the response was YES. [2022-12-13 15:15:36,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30363 conditions, 7599 events. 3947/7599 cut-off events. For 26687/26687 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 49161 event pairs, 1085 based on Foata normal form. 0/7417 useless extension candidates. Maximal degree in co-relation 26348. Up to 2548 conditions per place. [2022-12-13 15:15:36,290 INFO L137 encePairwiseOnDemand]: 569/587 looper letters, 189 selfloop transitions, 75 changer transitions 2/272 dead transitions. [2022-12-13 15:15:36,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 272 transitions, 2725 flow [2022-12-13 15:15:36,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:15:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-13 15:15:36,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4040 transitions. [2022-12-13 15:15:36,295 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45883021010789327 [2022-12-13 15:15:36,295 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4040 transitions. [2022-12-13 15:15:36,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4040 transitions. [2022-12-13 15:15:36,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:36,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4040 transitions. [2022-12-13 15:15:36,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 269.3333333333333) internal successors, (4040), 15 states have internal predecessors, (4040), 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) [2022-12-13 15:15:36,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 587.0) internal successors, (9392), 16 states have internal predecessors, (9392), 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) [2022-12-13 15:15:36,304 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 587.0) internal successors, (9392), 16 states have internal predecessors, (9392), 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) [2022-12-13 15:15:36,304 INFO L175 Difference]: Start difference. First operand has 213 places, 160 transitions, 1650 flow. Second operand 15 states and 4040 transitions. [2022-12-13 15:15:36,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 272 transitions, 2725 flow [2022-12-13 15:15:36,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 272 transitions, 2705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 15:15:36,690 INFO L231 Difference]: Finished difference. Result has 229 places, 171 transitions, 1984 flow [2022-12-13 15:15:36,690 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1642, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1984, PETRI_PLACES=229, PETRI_TRANSITIONS=171} [2022-12-13 15:15:36,690 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2022-12-13 15:15:36,690 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 171 transitions, 1984 flow [2022-12-13 15:15:36,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 260.90909090909093) internal successors, (2870), 11 states have internal predecessors, (2870), 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) [2022-12-13 15:15:36,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:36,691 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:36,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-13 15:15:36,691 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1651953769, now seen corresponding path program 1 times [2022-12-13 15:15:36,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:36,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532617490] [2022-12-13 15:15:36,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:36,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:37,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:37,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532617490] [2022-12-13 15:15:37,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532617490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:37,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:37,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 15:15:37,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803004037] [2022-12-13 15:15:37,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:37,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:15:37,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:37,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:15:37,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:15:38,794 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 587 [2022-12-13 15:15:38,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 171 transitions, 1984 flow. Second operand has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 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) [2022-12-13 15:15:38,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:38,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 587 [2022-12-13 15:15:38,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:41,265 INFO L130 PetriNetUnfolder]: 5433/10470 cut-off events. [2022-12-13 15:15:41,265 INFO L131 PetriNetUnfolder]: For 37856/37860 co-relation queries the response was YES. [2022-12-13 15:15:41,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40494 conditions, 10470 events. 5433/10470 cut-off events. For 37856/37860 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 72280 event pairs, 2869 based on Foata normal form. 40/10326 useless extension candidates. Maximal degree in co-relation 34660. Up to 3565 conditions per place. [2022-12-13 15:15:41,323 INFO L137 encePairwiseOnDemand]: 571/587 looper letters, 272 selfloop transitions, 57 changer transitions 6/341 dead transitions. [2022-12-13 15:15:41,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 341 transitions, 3466 flow [2022-12-13 15:15:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:15:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 15:15:41,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 5014 transitions. [2022-12-13 15:15:41,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4495651394243701 [2022-12-13 15:15:41,327 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 5014 transitions. [2022-12-13 15:15:41,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 5014 transitions. [2022-12-13 15:15:41,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:41,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 5014 transitions. [2022-12-13 15:15:41,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 263.89473684210526) internal successors, (5014), 19 states have internal predecessors, (5014), 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) [2022-12-13 15:15:41,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 587.0) internal successors, (11740), 20 states have internal predecessors, (11740), 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) [2022-12-13 15:15:41,335 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 587.0) internal successors, (11740), 20 states have internal predecessors, (11740), 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) [2022-12-13 15:15:41,335 INFO L175 Difference]: Start difference. First operand has 229 places, 171 transitions, 1984 flow. Second operand 19 states and 5014 transitions. [2022-12-13 15:15:41,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 341 transitions, 3466 flow [2022-12-13 15:15:41,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 341 transitions, 3309 flow, removed 17 selfloop flow, removed 10 redundant places. [2022-12-13 15:15:41,717 INFO L231 Difference]: Finished difference. Result has 248 places, 185 transitions, 2188 flow [2022-12-13 15:15:41,718 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2188, PETRI_PLACES=248, PETRI_TRANSITIONS=185} [2022-12-13 15:15:41,718 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 171 predicate places. [2022-12-13 15:15:41,718 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 185 transitions, 2188 flow [2022-12-13 15:15:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 254.0) internal successors, (4064), 16 states have internal predecessors, (4064), 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) [2022-12-13 15:15:41,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:41,719 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-13 15:15:41,719 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:41,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:41,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1116309099, now seen corresponding path program 2 times [2022-12-13 15:15:41,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:41,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363240760] [2022-12-13 15:15:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:42,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:42,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:42,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363240760] [2022-12-13 15:15:42,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363240760] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:42,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:42,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 15:15:42,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468258275] [2022-12-13 15:15:42,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:42,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:15:42,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:42,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:15:42,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:15:45,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 587 [2022-12-13 15:15:45,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 185 transitions, 2188 flow. Second operand has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:15:45,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:45,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 587 [2022-12-13 15:15:45,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:47,838 INFO L130 PetriNetUnfolder]: 5670/10972 cut-off events. [2022-12-13 15:15:47,838 INFO L131 PetriNetUnfolder]: For 36148/36158 co-relation queries the response was YES. [2022-12-13 15:15:47,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42302 conditions, 10972 events. 5670/10972 cut-off events. For 36148/36158 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 76738 event pairs, 2056 based on Foata normal form. 20/10802 useless extension candidates. Maximal degree in co-relation 41344. Up to 4676 conditions per place. [2022-12-13 15:15:47,910 INFO L137 encePairwiseOnDemand]: 567/587 looper letters, 221 selfloop transitions, 84 changer transitions 12/323 dead transitions. [2022-12-13 15:15:47,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 323 transitions, 3467 flow [2022-12-13 15:15:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:15:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-13 15:15:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4915 transitions. [2022-12-13 15:15:47,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4186541737649063 [2022-12-13 15:15:47,914 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4915 transitions. [2022-12-13 15:15:47,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4915 transitions. [2022-12-13 15:15:47,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:47,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4915 transitions. [2022-12-13 15:15:47,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 245.75) internal successors, (4915), 20 states have internal predecessors, (4915), 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) [2022-12-13 15:15:47,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 587.0) internal successors, (12327), 21 states have internal predecessors, (12327), 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) [2022-12-13 15:15:47,923 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 587.0) internal successors, (12327), 21 states have internal predecessors, (12327), 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) [2022-12-13 15:15:47,923 INFO L175 Difference]: Start difference. First operand has 248 places, 185 transitions, 2188 flow. Second operand 20 states and 4915 transitions. [2022-12-13 15:15:47,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 323 transitions, 3467 flow [2022-12-13 15:15:48,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 323 transitions, 3420 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-12-13 15:15:48,288 INFO L231 Difference]: Finished difference. Result has 265 places, 188 transitions, 2369 flow [2022-12-13 15:15:48,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2369, PETRI_PLACES=265, PETRI_TRANSITIONS=188} [2022-12-13 15:15:48,289 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 188 predicate places. [2022-12-13 15:15:48,289 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 188 transitions, 2369 flow [2022-12-13 15:15:48,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:15:48,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:48,289 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 15:15:48,289 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:48,290 INFO L85 PathProgramCache]: Analyzing trace with hash 258308391, now seen corresponding path program 3 times [2022-12-13 15:15:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14805288] [2022-12-13 15:15:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:49,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:49,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14805288] [2022-12-13 15:15:49,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14805288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:49,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:49,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 15:15:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911544640] [2022-12-13 15:15:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:49,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:15:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:49,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:15:49,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:15:51,803 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 587 [2022-12-13 15:15:51,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 188 transitions, 2369 flow. Second operand has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:15:51,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:51,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 587 [2022-12-13 15:15:51,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:15:54,749 INFO L130 PetriNetUnfolder]: 6052/11741 cut-off events. [2022-12-13 15:15:54,749 INFO L131 PetriNetUnfolder]: For 40331/40341 co-relation queries the response was YES. [2022-12-13 15:15:54,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45779 conditions, 11741 events. 6052/11741 cut-off events. For 40331/40341 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 82337 event pairs, 1327 based on Foata normal form. 40/11591 useless extension candidates. Maximal degree in co-relation 44834. Up to 3511 conditions per place. [2022-12-13 15:15:54,846 INFO L137 encePairwiseOnDemand]: 568/587 looper letters, 208 selfloop transitions, 94 changer transitions 12/320 dead transitions. [2022-12-13 15:15:54,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 320 transitions, 3634 flow [2022-12-13 15:15:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 15:15:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 15:15:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4670 transitions. [2022-12-13 15:15:54,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187214202456738 [2022-12-13 15:15:54,850 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4670 transitions. [2022-12-13 15:15:54,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4670 transitions. [2022-12-13 15:15:54,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:15:54,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4670 transitions. [2022-12-13 15:15:54,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 245.78947368421052) internal successors, (4670), 19 states have internal predecessors, (4670), 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) [2022-12-13 15:15:54,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 587.0) internal successors, (11740), 20 states have internal predecessors, (11740), 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) [2022-12-13 15:15:54,859 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 587.0) internal successors, (11740), 20 states have internal predecessors, (11740), 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) [2022-12-13 15:15:54,859 INFO L175 Difference]: Start difference. First operand has 265 places, 188 transitions, 2369 flow. Second operand 19 states and 4670 transitions. [2022-12-13 15:15:54,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 320 transitions, 3634 flow [2022-12-13 15:15:55,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 320 transitions, 3483 flow, removed 8 selfloop flow, removed 16 redundant places. [2022-12-13 15:15:55,259 INFO L231 Difference]: Finished difference. Result has 271 places, 193 transitions, 2521 flow [2022-12-13 15:15:55,259 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2521, PETRI_PLACES=271, PETRI_TRANSITIONS=193} [2022-12-13 15:15:55,259 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 194 predicate places. [2022-12-13 15:15:55,259 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 193 transitions, 2521 flow [2022-12-13 15:15:55,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:15:55,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:15:55,263 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:15:55,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-13 15:15:55,263 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:15:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:15:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 406172103, now seen corresponding path program 4 times [2022-12-13 15:15:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:15:55,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145491748] [2022-12-13 15:15:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:15:55,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:15:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:15:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:15:56,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:15:56,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145491748] [2022-12-13 15:15:56,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145491748] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:15:56,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:15:56,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 15:15:56,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166319591] [2022-12-13 15:15:56,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:15:56,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:15:56,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:15:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:15:56,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:15:58,050 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 587 [2022-12-13 15:15:58,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 193 transitions, 2521 flow. Second operand has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:15:58,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:15:58,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 587 [2022-12-13 15:15:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:16:00,799 INFO L130 PetriNetUnfolder]: 6020/11685 cut-off events. [2022-12-13 15:16:00,799 INFO L131 PetriNetUnfolder]: For 43095/43105 co-relation queries the response was YES. [2022-12-13 15:16:00,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46491 conditions, 11685 events. 6020/11685 cut-off events. For 43095/43105 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 81906 event pairs, 790 based on Foata normal form. 40/11535 useless extension candidates. Maximal degree in co-relation 42571. Up to 2992 conditions per place. [2022-12-13 15:16:00,966 INFO L137 encePairwiseOnDemand]: 569/587 looper letters, 197 selfloop transitions, 98 changer transitions 12/313 dead transitions. [2022-12-13 15:16:00,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 313 transitions, 3694 flow [2022-12-13 15:16:00,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 15:16:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 15:16:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4428 transitions. [2022-12-13 15:16:00,971 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4190800681431005 [2022-12-13 15:16:00,971 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4428 transitions. [2022-12-13 15:16:00,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4428 transitions. [2022-12-13 15:16:00,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:16:00,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4428 transitions. [2022-12-13 15:16:00,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 246.0) internal successors, (4428), 18 states have internal predecessors, (4428), 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) [2022-12-13 15:16:00,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 587.0) internal successors, (11153), 19 states have internal predecessors, (11153), 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) [2022-12-13 15:16:00,982 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 587.0) internal successors, (11153), 19 states have internal predecessors, (11153), 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) [2022-12-13 15:16:00,982 INFO L175 Difference]: Start difference. First operand has 271 places, 193 transitions, 2521 flow. Second operand 18 states and 4428 transitions. [2022-12-13 15:16:00,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 313 transitions, 3694 flow [2022-12-13 15:16:01,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 313 transitions, 3530 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-12-13 15:16:01,419 INFO L231 Difference]: Finished difference. Result has 277 places, 194 transitions, 2618 flow [2022-12-13 15:16:01,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2618, PETRI_PLACES=277, PETRI_TRANSITIONS=194} [2022-12-13 15:16:01,419 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 200 predicate places. [2022-12-13 15:16:01,420 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 194 transitions, 2618 flow [2022-12-13 15:16:01,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 237.6) internal successors, (4752), 20 states have internal predecessors, (4752), 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) [2022-12-13 15:16:01,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:16:01,420 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:16:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 15:16:01,420 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:16:01,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:16:01,420 INFO L85 PathProgramCache]: Analyzing trace with hash 443151335, now seen corresponding path program 2 times [2022-12-13 15:16:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:16:01,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54860479] [2022-12-13 15:16:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:16:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:16:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:16:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:16:02,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:16:02,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54860479] [2022-12-13 15:16:02,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54860479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:16:02,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:16:02,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 15:16:02,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605251732] [2022-12-13 15:16:02,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:16:02,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 15:16:02,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:16:02,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 15:16:02,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:16:04,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 587 [2022-12-13 15:16:04,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 194 transitions, 2618 flow. Second operand has 20 states, 20 states have (on average 241.6) internal successors, (4832), 20 states have internal predecessors, (4832), 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) [2022-12-13 15:16:04,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:16:04,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 587 [2022-12-13 15:16:04,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:16:07,108 INFO L130 PetriNetUnfolder]: 5996/11641 cut-off events. [2022-12-13 15:16:07,108 INFO L131 PetriNetUnfolder]: For 46234/46244 co-relation queries the response was YES. [2022-12-13 15:16:07,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47286 conditions, 11641 events. 5996/11641 cut-off events. For 46234/46244 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 81553 event pairs, 790 based on Foata normal form. 20/11471 useless extension candidates. Maximal degree in co-relation 43204. Up to 2992 conditions per place. [2022-12-13 15:16:07,190 INFO L137 encePairwiseOnDemand]: 569/587 looper letters, 196 selfloop transitions, 98 changer transitions 12/312 dead transitions. [2022-12-13 15:16:07,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 312 transitions, 3761 flow [2022-12-13 15:16:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 15:16:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-13 15:16:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4499 transitions. [2022-12-13 15:16:07,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42579973499905355 [2022-12-13 15:16:07,194 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4499 transitions. [2022-12-13 15:16:07,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4499 transitions. [2022-12-13 15:16:07,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:16:07,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4499 transitions. [2022-12-13 15:16:07,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 249.94444444444446) internal successors, (4499), 18 states have internal predecessors, (4499), 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) [2022-12-13 15:16:07,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 587.0) internal successors, (11153), 19 states have internal predecessors, (11153), 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) [2022-12-13 15:16:07,208 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 587.0) internal successors, (11153), 19 states have internal predecessors, (11153), 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) [2022-12-13 15:16:07,208 INFO L175 Difference]: Start difference. First operand has 277 places, 194 transitions, 2618 flow. Second operand 18 states and 4499 transitions. [2022-12-13 15:16:07,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 312 transitions, 3761 flow [2022-12-13 15:16:07,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 312 transitions, 3562 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-12-13 15:16:07,772 INFO L231 Difference]: Finished difference. Result has 275 places, 193 transitions, 2606 flow [2022-12-13 15:16:07,772 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2606, PETRI_PLACES=275, PETRI_TRANSITIONS=193} [2022-12-13 15:16:07,772 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2022-12-13 15:16:07,772 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 193 transitions, 2606 flow [2022-12-13 15:16:07,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 241.6) internal successors, (4832), 20 states have internal predecessors, (4832), 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) [2022-12-13 15:16:07,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:16:07,773 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:16:07,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 15:16:07,773 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:16:07,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:16:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1100671021, now seen corresponding path program 1 times [2022-12-13 15:16:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:16:07,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245507141] [2022-12-13 15:16:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:16:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:16:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:16:09,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:16:09,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:16:09,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245507141] [2022-12-13 15:16:09,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245507141] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:16:09,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:16:09,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 15:16:09,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500344321] [2022-12-13 15:16:09,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:16:09,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:16:09,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:16:09,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:16:09,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:16:11,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 587 [2022-12-13 15:16:11,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 193 transitions, 2606 flow. Second operand has 15 states, 15 states have (on average 256.3333333333333) internal successors, (3845), 15 states have internal predecessors, (3845), 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) [2022-12-13 15:16:11,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:16:11,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 587 [2022-12-13 15:16:11,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:16:15,015 INFO L130 PetriNetUnfolder]: 7025/13589 cut-off events. [2022-12-13 15:16:15,015 INFO L131 PetriNetUnfolder]: For 66545/66557 co-relation queries the response was YES. [2022-12-13 15:16:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55392 conditions, 13589 events. 7025/13589 cut-off events. For 66545/66557 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 97991 event pairs, 4475 based on Foata normal form. 0/13357 useless extension candidates. Maximal degree in co-relation 51243. Up to 10146 conditions per place. [2022-12-13 15:16:15,120 INFO L137 encePairwiseOnDemand]: 574/587 looper letters, 271 selfloop transitions, 35 changer transitions 7/319 dead transitions. [2022-12-13 15:16:15,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 319 transitions, 4011 flow [2022-12-13 15:16:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:16:15,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:16:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3475 transitions. [2022-12-13 15:16:15,123 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.455379373607653 [2022-12-13 15:16:15,123 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3475 transitions. [2022-12-13 15:16:15,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3475 transitions. [2022-12-13 15:16:15,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:16:15,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3475 transitions. [2022-12-13 15:16:15,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 267.3076923076923) internal successors, (3475), 13 states have internal predecessors, (3475), 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) [2022-12-13 15:16:15,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:16:15,130 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:16:15,130 INFO L175 Difference]: Start difference. First operand has 275 places, 193 transitions, 2606 flow. Second operand 13 states and 3475 transitions. [2022-12-13 15:16:15,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 319 transitions, 4011 flow [2022-12-13 15:16:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 319 transitions, 3789 flow, removed 0 selfloop flow, removed 17 redundant places. [2022-12-13 15:16:15,802 INFO L231 Difference]: Finished difference. Result has 279 places, 203 transitions, 2738 flow [2022-12-13 15:16:15,803 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2738, PETRI_PLACES=279, PETRI_TRANSITIONS=203} [2022-12-13 15:16:15,803 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2022-12-13 15:16:15,803 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 203 transitions, 2738 flow [2022-12-13 15:16:15,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 256.3333333333333) internal successors, (3845), 15 states have internal predecessors, (3845), 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) [2022-12-13 15:16:15,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:16:15,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:16:15,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-12-13 15:16:15,804 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:16:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:16:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1100670994, now seen corresponding path program 1 times [2022-12-13 15:16:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:16:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614217415] [2022-12-13 15:16:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:16:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:16:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:16:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:16:16,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:16:16,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614217415] [2022-12-13 15:16:16,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614217415] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:16:16,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:16:16,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 15:16:16,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578805942] [2022-12-13 15:16:16,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:16:16,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:16:16,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:16:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:16:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:16:18,061 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 587 [2022-12-13 15:16:18,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 203 transitions, 2738 flow. Second operand has 16 states, 16 states have (on average 250.1875) internal successors, (4003), 16 states have internal predecessors, (4003), 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) [2022-12-13 15:16:18,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:16:18,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 587 [2022-12-13 15:16:18,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:16:21,042 INFO L130 PetriNetUnfolder]: 6957/13465 cut-off events. [2022-12-13 15:16:21,043 INFO L131 PetriNetUnfolder]: For 55447/55459 co-relation queries the response was YES. [2022-12-13 15:16:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54014 conditions, 13465 events. 6957/13465 cut-off events. For 55447/55459 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 96850 event pairs, 2865 based on Foata normal form. 0/13333 useless extension candidates. Maximal degree in co-relation 52356. Up to 5763 conditions per place. [2022-12-13 15:16:21,124 INFO L137 encePairwiseOnDemand]: 571/587 looper letters, 225 selfloop transitions, 68 changer transitions 8/307 dead transitions. [2022-12-13 15:16:21,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 307 transitions, 3792 flow [2022-12-13 15:16:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:16:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-12-13 15:16:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3638 transitions. [2022-12-13 15:16:21,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4426867851058652 [2022-12-13 15:16:21,127 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3638 transitions. [2022-12-13 15:16:21,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3638 transitions. [2022-12-13 15:16:21,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:16:21,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3638 transitions. [2022-12-13 15:16:21,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 259.85714285714283) internal successors, (3638), 14 states have internal predecessors, (3638), 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) [2022-12-13 15:16:21,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:16:21,133 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 587.0) internal successors, (8805), 15 states have internal predecessors, (8805), 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) [2022-12-13 15:16:21,133 INFO L175 Difference]: Start difference. First operand has 279 places, 203 transitions, 2738 flow. Second operand 14 states and 3638 transitions. [2022-12-13 15:16:21,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 307 transitions, 3792 flow [2022-12-13 15:16:21,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 307 transitions, 3764 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-12-13 15:16:21,797 INFO L231 Difference]: Finished difference. Result has 288 places, 202 transitions, 2841 flow [2022-12-13 15:16:21,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2841, PETRI_PLACES=288, PETRI_TRANSITIONS=202} [2022-12-13 15:16:21,798 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 211 predicate places. [2022-12-13 15:16:21,798 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 202 transitions, 2841 flow [2022-12-13 15:16:21,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 250.1875) internal successors, (4003), 16 states have internal predecessors, (4003), 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) [2022-12-13 15:16:21,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:16:21,798 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:16:21,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-12-13 15:16:21,798 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:16:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:16:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash -411947953, now seen corresponding path program 2 times [2022-12-13 15:16:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:16:21,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297511494] [2022-12-13 15:16:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:16:21,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:16:21,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:16:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:16:22,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:16:22,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297511494] [2022-12-13 15:16:22,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297511494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:16:22,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:16:22,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 15:16:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244357840] [2022-12-13 15:16:22,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:16:22,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 15:16:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:16:22,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 15:16:22,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:16:24,002 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 587 [2022-12-13 15:16:24,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 202 transitions, 2841 flow. Second operand has 16 states, 16 states have (on average 250.1875) internal successors, (4003), 16 states have internal predecessors, (4003), 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) [2022-12-13 15:16:24,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 15:16:24,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 587 [2022-12-13 15:16:24,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 15:16:27,111 INFO L130 PetriNetUnfolder]: 6909/13377 cut-off events. [2022-12-13 15:16:27,111 INFO L131 PetriNetUnfolder]: For 60960/60972 co-relation queries the response was YES. [2022-12-13 15:16:27,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54890 conditions, 13377 events. 6909/13377 cut-off events. For 60960/60972 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 96211 event pairs, 2977 based on Foata normal form. 40/13405 useless extension candidates. Maximal degree in co-relation 52152. Up to 5763 conditions per place. [2022-12-13 15:16:27,197 INFO L137 encePairwiseOnDemand]: 572/587 looper letters, 215 selfloop transitions, 64 changer transitions 15/300 dead transitions. [2022-12-13 15:16:27,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 300 transitions, 3864 flow [2022-12-13 15:16:27,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:16:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 15:16:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3382 transitions. [2022-12-13 15:16:27,200 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4431922421700957 [2022-12-13 15:16:27,200 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3382 transitions. [2022-12-13 15:16:27,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3382 transitions. [2022-12-13 15:16:27,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 15:16:27,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3382 transitions. [2022-12-13 15:16:27,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 260.15384615384613) internal successors, (3382), 13 states have internal predecessors, (3382), 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) [2022-12-13 15:16:27,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:16:27,206 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 587.0) internal successors, (8218), 14 states have internal predecessors, (8218), 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) [2022-12-13 15:16:27,206 INFO L175 Difference]: Start difference. First operand has 288 places, 202 transitions, 2841 flow. Second operand 13 states and 3382 transitions. [2022-12-13 15:16:27,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 300 transitions, 3864 flow [2022-12-13 15:16:27,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 300 transitions, 3738 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-12-13 15:16:27,924 INFO L231 Difference]: Finished difference. Result has 289 places, 202 transitions, 2850 flow [2022-12-13 15:16:27,925 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=2715, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2850, PETRI_PLACES=289, PETRI_TRANSITIONS=202} [2022-12-13 15:16:27,925 INFO L288 CegarLoopForPetriNet]: 77 programPoint places, 212 predicate places. [2022-12-13 15:16:27,925 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 202 transitions, 2850 flow [2022-12-13 15:16:27,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 250.1875) internal successors, (4003), 16 states have internal predecessors, (4003), 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) [2022-12-13 15:16:27,925 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 15:16:27,925 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:16:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 15:16:27,926 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 36 more)] === [2022-12-13 15:16:27,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:16:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1315012093, now seen corresponding path program 3 times [2022-12-13 15:16:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:16:27,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49758446] [2022-12-13 15:16:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:16:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:16:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat