./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/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_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/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_32440c6e-4f84-42b1-8f2d-b6897fc7d093/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 f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc --- 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 18:29:31,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:29:31,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:29:31,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:29:31,436 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:29:31,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:29:31,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:29:31,442 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:29:31,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:29:31,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:29:31,447 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:29:31,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:29:31,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:29:31,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:29:31,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:29:31,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:29:31,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:29:31,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:29:31,460 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:29:31,463 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:29:31,465 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:29:31,467 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:29:31,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:29:31,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:29:31,476 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:29:31,477 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:29:31,477 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:29:31,479 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:29:31,479 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:29:31,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:29:31,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:29:31,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:29:31,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:29:31,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:29:31,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:29:31,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:29:31,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:29:31,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:29:31,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:29:31,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:29:31,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:29:31,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 18:29:31,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:29:31,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:29:31,511 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:29:31,511 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:29:31,511 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:29:31,512 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:29:31,512 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:29:31,512 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:29:31,512 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:29:31,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:29:31,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:29:31,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:29:31,515 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:29:31,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:29:31,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:29:31,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:29:31,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:29:31,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:29:31,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:29:31,517 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:29:31,517 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_32440c6e-4f84-42b1-8f2d-b6897fc7d093/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f83ae5bec1717d6f197d4259600c0d1f406909832409df09253b7bf70d3f66fc [2022-12-13 18:29:31,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:29:31,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:29:31,697 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:29:31,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:29:31,699 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:29:31,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-12-13 18:29:34,307 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:29:34,430 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:29:34,430 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c [2022-12-13 18:29:34,435 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/data/48cc6280d/2f748caa451c4d30a59978bef2ae2dee/FLAGf06adf692 [2022-12-13 18:29:34,446 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/data/48cc6280d/2f748caa451c4d30a59978bef2ae2dee [2022-12-13 18:29:34,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:29:34,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:29:34,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:29:34,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:29:34,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:29:34,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436eb6cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34, skipping insertion in model container [2022-12-13 18:29:34,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:29:34,483 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:29:34,636 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,637 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,638 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,642 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,643 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,647 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,648 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,651 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,654 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,660 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,661 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,669 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_32440c6e-4f84-42b1-8f2d-b6897fc7d093/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-12-13 18:29:34,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:29:34,686 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:29:34,698 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,699 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,700 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,701 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,702 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,704 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,705 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,706 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,707 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,708 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,709 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-13 18:29:34,710 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-13 18:29:34,715 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_32440c6e-4f84-42b1-8f2d-b6897fc7d093/sv-benchmarks/c/weaver/popl20-more-buffer-series2.wvr.c[4232,4245] [2022-12-13 18:29:34,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:29:34,729 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:29:34,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34 WrapperNode [2022-12-13 18:29:34,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:29:34,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:29:34,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:29:34,731 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:29:34,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,781 INFO L138 Inliner]: procedures = 27, calls = 83, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 394 [2022-12-13 18:29:34,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:29:34,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:29:34,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:29:34,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:29:34,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,812 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:29:34,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:29:34,817 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:29:34,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:29:34,817 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (1/1) ... [2022-12-13 18:29:34,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:29:34,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:34,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:29:34,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:29:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:29:34,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 18:29:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 18:29:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 18:29:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 18:29:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 18:29:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 18:29:34,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 18:29:34,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 18:29:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 18:29:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 18:29:34,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 18:29:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:29:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-13 18:29:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-13 18:29:34,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 18:29:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:29:34,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:29:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 18:29:34,897 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 18:29:35,011 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:29:35,013 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:29:35,460 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:29:35,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:29:35,882 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-12-13 18:29:35,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:29:35 BoogieIcfgContainer [2022-12-13 18:29:35,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:29:35,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:29:35,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:29:35,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:29:35,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:29:34" (1/3) ... [2022-12-13 18:29:35,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd051e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:29:35, skipping insertion in model container [2022-12-13 18:29:35,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:29:34" (2/3) ... [2022-12-13 18:29:35,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd051e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:29:35, skipping insertion in model container [2022-12-13 18:29:35,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:29:35" (3/3) ... [2022-12-13 18:29:35,893 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series2.wvr.c [2022-12-13 18:29:35,902 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 18:29:35,912 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:29:35,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-12-13 18:29:35,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 18:29:36,041 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 18:29:36,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 302 transitions, 636 flow [2022-12-13 18:29:36,146 INFO L130 PetriNetUnfolder]: 22/298 cut-off events. [2022-12-13 18:29:36,146 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 18:29:36,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315 conditions, 298 events. 22/298 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-12-13 18:29:36,153 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 302 transitions, 636 flow [2022-12-13 18:29:36,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 275 transitions, 571 flow [2022-12-13 18:29:36,165 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 18:29:36,175 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 275 transitions, 571 flow [2022-12-13 18:29:36,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 275 transitions, 571 flow [2022-12-13 18:29:36,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 275 transitions, 571 flow [2022-12-13 18:29:36,238 INFO L130 PetriNetUnfolder]: 21/275 cut-off events. [2022-12-13 18:29:36,238 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 18:29:36,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291 conditions, 275 events. 21/275 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 300 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 252. Up to 2 conditions per place. [2022-12-13 18:29:36,245 INFO L119 LiptonReduction]: Number of co-enabled transitions 4384 [2022-12-13 18:29:50,919 INFO L134 LiptonReduction]: Checked pairs total: 7176 [2022-12-13 18:29:50,919 INFO L136 LiptonReduction]: Total number of compositions: 285 [2022-12-13 18:29:50,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:29:50,939 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;@91b1fea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:29:50,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-12-13 18:29:50,941 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 18:29:50,941 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:29:50,941 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:29:50,942 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 18:29:50,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:29:50,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 52506, now seen corresponding path program 1 times [2022-12-13 18:29:50,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:50,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124641596] [2022-12-13 18:29:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:51,210 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 18:29:51,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124641596] [2022-12-13 18:29:51,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124641596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:51,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:51,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:29:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725567790] [2022-12-13 18:29:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:51,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:51,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:51,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 587 [2022-12-13 18:29:51,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 18:29:51,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:29:51,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 587 [2022-12-13 18:29:51,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:29:58,057 INFO L130 PetriNetUnfolder]: 45285/56443 cut-off events. [2022-12-13 18:29:58,057 INFO L131 PetriNetUnfolder]: For 924/924 co-relation queries the response was YES. [2022-12-13 18:29:58,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113816 conditions, 56443 events. 45285/56443 cut-off events. For 924/924 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 313922 event pairs, 29190 based on Foata normal form. 0/17003 useless extension candidates. Maximal degree in co-relation 48878. Up to 27680 conditions per place. [2022-12-13 18:29:58,388 INFO L137 encePairwiseOnDemand]: 564/587 looper letters, 87 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2022-12-13 18:29:58,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 99 transitions, 426 flow [2022-12-13 18:29:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:29:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:29:58,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 838 transitions. [2022-12-13 18:29:58,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47586598523566154 [2022-12-13 18:29:58,402 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 838 transitions. [2022-12-13 18:29:58,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 838 transitions. [2022-12-13 18:29:58,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:29:58,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 838 transitions. [2022-12-13 18:29:58,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 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 18:29:58,416 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 18:29:58,417 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 18:29:58,418 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 3 states and 838 transitions. [2022-12-13 18:29:58,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 99 transitions, 426 flow [2022-12-13 18:29:58,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 99 transitions, 400 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-12-13 18:29:58,497 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 176 flow [2022-12-13 18:29:58,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2022-12-13 18:29:58,501 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -14 predicate places. [2022-12-13 18:29:58,502 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 176 flow [2022-12-13 18:29:58,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 18:29:58,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:29:58,502 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:29:58,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:29:58,503 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:29:58,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:58,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1630499, now seen corresponding path program 1 times [2022-12-13 18:29:58,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:58,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136715556] [2022-12-13 18:29:58,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:58,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:58,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:29:58,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:58,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136715556] [2022-12-13 18:29:58,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136715556] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:58,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:58,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:29:58,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128427285] [2022-12-13 18:29:58,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:58,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:29:58,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:58,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:29:58,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:29:58,591 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 587 [2022-12-13 18:29:58,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 18:29:58,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:29:58,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 587 [2022-12-13 18:29:58,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:04,971 INFO L130 PetriNetUnfolder]: 45285/56440 cut-off events. [2022-12-13 18:30:04,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:30:05,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112844 conditions, 56440 events. 45285/56440 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4699. Compared 313658 event pairs, 29190 based on Foata normal form. 0/16739 useless extension candidates. Maximal degree in co-relation 56402. Up to 55348 conditions per place. [2022-12-13 18:30:05,244 INFO L137 encePairwiseOnDemand]: 583/587 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-12-13 18:30:05,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 268 flow [2022-12-13 18:30:05,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:05,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2022-12-13 18:30:05,247 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4355479840999432 [2022-12-13 18:30:05,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2022-12-13 18:30:05,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2022-12-13 18:30:05,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:05,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2022-12-13 18:30:05,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 18:30:05,253 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 18:30:05,253 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 18:30:05,254 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 176 flow. Second operand 3 states and 767 transitions. [2022-12-13 18:30:05,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 268 flow [2022-12-13 18:30:05,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 256 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:30:05,255 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 154 flow [2022-12-13 18:30:05,256 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2022-12-13 18:30:05,256 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -17 predicate places. [2022-12-13 18:30:05,256 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 154 flow [2022-12-13 18:30:05,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 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 18:30:05,257 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:05,257 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 18:30:05,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:30:05,257 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:30:05,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:05,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1630541, now seen corresponding path program 1 times [2022-12-13 18:30:05,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:05,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718178886] [2022-12-13 18:30:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:05,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:05,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:05,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:05,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718178886] [2022-12-13 18:30:05,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718178886] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:05,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055539048] [2022-12-13 18:30:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:05,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:05,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:05,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:05,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:30:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:05,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:30:05,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:05,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:05,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055539048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:05,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:05,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 18:30:05,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563442266] [2022-12-13 18:30:05,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:05,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:05,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:05,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:05,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:05,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 587 [2022-12-13 18:30:05,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 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 18:30:05,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:05,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 587 [2022-12-13 18:30:05,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:20,032 INFO L130 PetriNetUnfolder]: 113211/141094 cut-off events. [2022-12-13 18:30:20,032 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 18:30:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282072 conditions, 141094 events. 113211/141094 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8225. Compared 840146 event pairs, 72975 based on Foata normal form. 0/42916 useless extension candidates. Maximal degree in co-relation 282064. Up to 27678 conditions per place. [2022-12-13 18:30:20,654 INFO L137 encePairwiseOnDemand]: 578/587 looper letters, 198 selfloop transitions, 21 changer transitions 0/225 dead transitions. [2022-12-13 18:30:20,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 225 transitions, 988 flow [2022-12-13 18:30:20,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:30:20,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 18:30:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1662 transitions. [2022-12-13 18:30:20,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47189097103918226 [2022-12-13 18:30:20,657 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1662 transitions. [2022-12-13 18:30:20,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1662 transitions. [2022-12-13 18:30:20,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:20,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1662 transitions. [2022-12-13 18:30:20,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 277.0) internal successors, (1662), 6 states have internal predecessors, (1662), 0 states have call successors, (0), 0 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 18:30:20,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 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 18:30:20,666 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 587.0) internal successors, (4109), 7 states have internal predecessors, (4109), 0 states have call successors, (0), 0 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 18:30:20,666 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 154 flow. Second operand 6 states and 1662 transitions. [2022-12-13 18:30:20,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 225 transitions, 988 flow [2022-12-13 18:30:20,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 225 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:20,669 INFO L231 Difference]: Finished difference. Result has 63 places, 73 transitions, 303 flow [2022-12-13 18:30:20,669 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=73} [2022-12-13 18:30:20,669 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2022-12-13 18:30:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 73 transitions, 303 flow [2022-12-13 18:30:20,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 240.14285714285714) internal successors, (1681), 7 states have internal predecessors, (1681), 0 states have call successors, (0), 0 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 18:30:20,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:20,671 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 18:30:20,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:30:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:20,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:30:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1332348804, now seen corresponding path program 2 times [2022-12-13 18:30:20,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:20,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059760353] [2022-12-13 18:30:20,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:20,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:20,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:20,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:20,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059760353] [2022-12-13 18:30:20,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059760353] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:20,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376645283] [2022-12-13 18:30:20,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 18:30:20,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:20,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:20,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:20,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:30:21,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 18:30:21,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 18:30:21,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 18:30:21,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 18:30:21,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:30:21,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376645283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:21,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:30:21,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 18:30:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001532808] [2022-12-13 18:30:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:21,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:30:21,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:30:21,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:30:21,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 587 [2022-12-13 18:30:21,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 73 transitions, 303 flow. Second operand has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 18:30:21,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:21,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 587 [2022-12-13 18:30:21,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:30:35,639 INFO L130 PetriNetUnfolder]: 113211/141093 cut-off events. [2022-12-13 18:30:35,640 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-13 18:30:35,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282117 conditions, 141093 events. 113211/141093 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9762. Compared 845522 event pairs, 72975 based on Foata normal form. 1/41845 useless extension candidates. Maximal degree in co-relation 282105. Up to 138358 conditions per place. [2022-12-13 18:30:36,272 INFO L137 encePairwiseOnDemand]: 584/587 looper letters, 60 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2022-12-13 18:30:36,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 425 flow [2022-12-13 18:30:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:30:36,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:30:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2022-12-13 18:30:36,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4389551391254969 [2022-12-13 18:30:36,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2022-12-13 18:30:36,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2022-12-13 18:30:36,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:30:36,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2022-12-13 18:30:36,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 18:30:36,279 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 18:30:36,280 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 18:30:36,280 INFO L175 Difference]: Start difference. First operand has 63 places, 73 transitions, 303 flow. Second operand 3 states and 773 transitions. [2022-12-13 18:30:36,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 425 flow [2022-12-13 18:30:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 395 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-12-13 18:30:36,284 INFO L231 Difference]: Finished difference. Result has 63 places, 72 transitions, 275 flow [2022-12-13 18:30:36,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=72} [2022-12-13 18:30:36,285 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, -10 predicate places. [2022-12-13 18:30:36,285 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 72 transitions, 275 flow [2022-12-13 18:30:36,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.0) internal successors, (729), 3 states have internal predecessors, (729), 0 states have call successors, (0), 0 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 18:30:36,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:30:36,286 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 18:30:36,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:30:36,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:36,487 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:30:36,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:36,488 INFO L85 PathProgramCache]: Analyzing trace with hash -822338946, now seen corresponding path program 1 times [2022-12-13 18:30:36,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:36,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054313881] [2022-12-13 18:30:36,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:36,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:36,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054313881] [2022-12-13 18:30:36,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054313881] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:36,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381514139] [2022-12-13 18:30:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:36,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:36,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:36,620 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:36,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:30:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:36,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:30:36,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:36,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:36,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:30:36,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381514139] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:36,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:36,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 18:30:36,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040257812] [2022-12-13 18:30:36,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:36,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:30:36,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:30:36,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:30:36,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 587 [2022-12-13 18:30:36,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 72 transitions, 275 flow. Second operand has 13 states, 13 states have (on average 240.15384615384616) internal successors, (3122), 13 states have internal predecessors, (3122), 0 states have call successors, (0), 0 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 18:30:36,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:30:36,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 587 [2022-12-13 18:30:36,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:08,774 INFO L130 PetriNetUnfolder]: 249063/310401 cut-off events. [2022-12-13 18:31:08,775 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-13 18:31:09,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620596 conditions, 310401 events. 249063/310401 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 10508. Compared 1918554 event pairs, 160545 based on Foata normal form. 12/94767 useless extension candidates. Maximal degree in co-relation 620583. Up to 27690 conditions per place. [2022-12-13 18:31:10,271 INFO L137 encePairwiseOnDemand]: 579/587 looper letters, 425 selfloop transitions, 51 changer transitions 0/482 dead transitions. [2022-12-13 18:31:10,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 482 transitions, 2247 flow [2022-12-13 18:31:10,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:31:10,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 18:31:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3356 transitions. [2022-12-13 18:31:10,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47643384440658715 [2022-12-13 18:31:10,278 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3356 transitions. [2022-12-13 18:31:10,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3356 transitions. [2022-12-13 18:31:10,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:10,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3356 transitions. [2022-12-13 18:31:10,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 279.6666666666667) internal successors, (3356), 12 states have internal predecessors, (3356), 0 states have call successors, (0), 0 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 18:31:10,291 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 18:31:10,293 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 18:31:10,293 INFO L175 Difference]: Start difference. First operand has 63 places, 72 transitions, 275 flow. Second operand 12 states and 3356 transitions. [2022-12-13 18:31:10,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 482 transitions, 2247 flow [2022-12-13 18:31:10,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 482 transitions, 2223 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 18:31:10,299 INFO L231 Difference]: Finished difference. Result has 78 places, 102 transitions, 611 flow [2022-12-13 18:31:10,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=611, PETRI_PLACES=78, PETRI_TRANSITIONS=102} [2022-12-13 18:31:10,299 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2022-12-13 18:31:10,299 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 102 transitions, 611 flow [2022-12-13 18:31:10,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 240.15384615384616) internal successors, (3122), 13 states have internal predecessors, (3122), 0 states have call successors, (0), 0 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 18:31:10,300 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:10,301 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:10,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:31:10,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:10,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:31:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash -790304405, now seen corresponding path program 1 times [2022-12-13 18:31:10,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:10,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097380413] [2022-12-13 18:31:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:10,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:10,592 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 18:31:10,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:10,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097380413] [2022-12-13 18:31:10,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097380413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:10,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:10,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 18:31:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453146520] [2022-12-13 18:31:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:10,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:31:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:31:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:31:10,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 587 [2022-12-13 18:31:10,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 102 transitions, 611 flow. Second operand has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 18:31:10,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:10,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 587 [2022-12-13 18:31:10,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:31:50,136 INFO L130 PetriNetUnfolder]: 287266/366523 cut-off events. [2022-12-13 18:31:50,137 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-12-13 18:31:51,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737660 conditions, 366523 events. 287266/366523 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 16322. Compared 2554937 event pairs, 73139 based on Foata normal form. 0/116566 useless extension candidates. Maximal degree in co-relation 737641. Up to 238602 conditions per place. [2022-12-13 18:31:52,308 INFO L137 encePairwiseOnDemand]: 583/587 looper letters, 128 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-12-13 18:31:52,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 136 transitions, 946 flow [2022-12-13 18:31:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:31:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 18:31:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 823 transitions. [2022-12-13 18:31:52,311 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4673480976717774 [2022-12-13 18:31:52,311 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 823 transitions. [2022-12-13 18:31:52,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 823 transitions. [2022-12-13 18:31:52,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:31:52,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 823 transitions. [2022-12-13 18:31:52,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 274.3333333333333) internal successors, (823), 3 states have internal predecessors, (823), 0 states have call successors, (0), 0 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 18:31:52,314 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 18:31:52,315 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 18:31:52,315 INFO L175 Difference]: Start difference. First operand has 78 places, 102 transitions, 611 flow. Second operand 3 states and 823 transitions. [2022-12-13 18:31:52,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 136 transitions, 946 flow [2022-12-13 18:31:52,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 136 transitions, 802 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-12-13 18:31:52,319 INFO L231 Difference]: Finished difference. Result has 76 places, 103 transitions, 481 flow [2022-12-13 18:31:52,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=481, PETRI_PLACES=76, PETRI_TRANSITIONS=103} [2022-12-13 18:31:52,320 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2022-12-13 18:31:52,320 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 103 transitions, 481 flow [2022-12-13 18:31:52,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 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 18:31:52,320 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:31:52,320 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:31:52,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:31:52,320 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:31:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:52,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1270370563, now seen corresponding path program 1 times [2022-12-13 18:31:52,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:52,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608201162] [2022-12-13 18:31:52,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:52,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608201162] [2022-12-13 18:31:52,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608201162] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:31:52,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90827052] [2022-12-13 18:31:52,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:52,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:52,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:52,383 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:52,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:31:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:52,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 18:31:52,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:31:52,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:31:52,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90827052] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:52,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:31:52,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [2] total 5 [2022-12-13 18:31:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217207933] [2022-12-13 18:31:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:31:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:31:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:31:52,578 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 587 [2022-12-13 18:31:52,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 103 transitions, 481 flow. Second operand has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 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 18:31:52,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:31:52,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 587 [2022-12-13 18:31:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:32:37,541 INFO L130 PetriNetUnfolder]: 311565/401340 cut-off events. [2022-12-13 18:32:37,541 INFO L131 PetriNetUnfolder]: For 21946/21946 co-relation queries the response was YES. [2022-12-13 18:32:38,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850769 conditions, 401340 events. 311565/401340 cut-off events. For 21946/21946 co-relation queries the response was YES. Maximal size of possible extension queue 17718. Compared 2861063 event pairs, 230120 based on Foata normal form. 2519/159906 useless extension candidates. Maximal degree in co-relation 850749. Up to 363937 conditions per place. [2022-12-13 18:32:40,032 INFO L137 encePairwiseOnDemand]: 574/587 looper letters, 175 selfloop transitions, 15 changer transitions 0/196 dead transitions. [2022-12-13 18:32:40,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 196 transitions, 1230 flow [2022-12-13 18:32:40,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:32:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:32:40,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1298 transitions. [2022-12-13 18:32:40,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4422487223168654 [2022-12-13 18:32:40,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1298 transitions. [2022-12-13 18:32:40,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1298 transitions. [2022-12-13 18:32:40,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:32:40,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1298 transitions. [2022-12-13 18:32:40,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.6) internal successors, (1298), 5 states have internal predecessors, (1298), 0 states have call successors, (0), 0 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 18:32:40,041 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 18:32:40,042 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 18:32:40,042 INFO L175 Difference]: Start difference. First operand has 76 places, 103 transitions, 481 flow. Second operand 5 states and 1298 transitions. [2022-12-13 18:32:40,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 196 transitions, 1230 flow [2022-12-13 18:32:40,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 196 transitions, 1228 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 18:32:40,064 INFO L231 Difference]: Finished difference. Result has 81 places, 115 transitions, 657 flow [2022-12-13 18:32:40,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=657, PETRI_PLACES=81, PETRI_TRANSITIONS=115} [2022-12-13 18:32:40,064 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2022-12-13 18:32:40,064 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 115 transitions, 657 flow [2022-12-13 18:32:40,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 235.75) internal successors, (943), 4 states have internal predecessors, (943), 0 states have call successors, (0), 0 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 18:32:40,065 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:32:40,065 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:40,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:32:40,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 18:32:40,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:32:40,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1299613108, now seen corresponding path program 1 times [2022-12-13 18:32:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:40,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540517583] [2022-12-13 18:32:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:40,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:32:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:40,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540517583] [2022-12-13 18:32:40,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540517583] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:40,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117080165] [2022-12-13 18:32:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:40,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:40,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:40,356 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:40,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:32:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:40,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 18:32:40,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:40,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:40,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:40,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117080165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:40,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:40,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 4, 4] total 9 [2022-12-13 18:32:40,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675398162] [2022-12-13 18:32:40,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:40,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:32:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:40,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:32:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:32:40,776 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 587 [2022-12-13 18:32:40,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 115 transitions, 657 flow. Second operand has 11 states, 11 states have (on average 226.9090909090909) internal successors, (2496), 11 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 18:32:40,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:32:40,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 587 [2022-12-13 18:32:40,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:34:14,302 INFO L130 PetriNetUnfolder]: 651495/831410 cut-off events. [2022-12-13 18:34:14,303 INFO L131 PetriNetUnfolder]: For 172418/172418 co-relation queries the response was YES. [2022-12-13 18:34:16,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2054967 conditions, 831410 events. 651495/831410 cut-off events. For 172418/172418 co-relation queries the response was YES. Maximal size of possible extension queue 32851. Compared 6094567 event pairs, 120039 based on Foata normal form. 15598/360037 useless extension candidates. Maximal degree in co-relation 2054944. Up to 191753 conditions per place. [2022-12-13 18:34:19,882 INFO L137 encePairwiseOnDemand]: 570/587 looper letters, 398 selfloop transitions, 21 changer transitions 0/425 dead transitions. [2022-12-13 18:34:19,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 425 transitions, 2614 flow [2022-12-13 18:34:19,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 18:34:19,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-13 18:34:19,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3250 transitions. [2022-12-13 18:34:19,888 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42589437819420783 [2022-12-13 18:34:19,888 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3250 transitions. [2022-12-13 18:34:19,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3250 transitions. [2022-12-13 18:34:19,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:34:19,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3250 transitions. [2022-12-13 18:34:19,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 250.0) internal successors, (3250), 13 states have internal predecessors, (3250), 0 states have call successors, (0), 0 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 18:34:19,900 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 18:34:19,901 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 18:34:19,901 INFO L175 Difference]: Start difference. First operand has 81 places, 115 transitions, 657 flow. Second operand 13 states and 3250 transitions. [2022-12-13 18:34:19,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 425 transitions, 2614 flow [2022-12-13 18:34:20,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 425 transitions, 2608 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-13 18:34:20,123 INFO L231 Difference]: Finished difference. Result has 100 places, 128 transitions, 874 flow [2022-12-13 18:34:20,123 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=874, PETRI_PLACES=100, PETRI_TRANSITIONS=128} [2022-12-13 18:34:20,123 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 27 predicate places. [2022-12-13 18:34:20,123 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 128 transitions, 874 flow [2022-12-13 18:34:20,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 226.9090909090909) internal successors, (2496), 11 states have internal predecessors, (2496), 0 states have call successors, (0), 0 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 18:34:20,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:34:20,125 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:20,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:34:20,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:20,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:34:20,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:20,327 INFO L85 PathProgramCache]: Analyzing trace with hash 734757810, now seen corresponding path program 1 times [2022-12-13 18:34:20,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:20,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15854660] [2022-12-13 18:34:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:20,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:20,444 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 18:34:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:20,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15854660] [2022-12-13 18:34:20,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15854660] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:20,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:20,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:34:20,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008686876] [2022-12-13 18:34:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:34:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:34:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:34:20,490 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 587 [2022-12-13 18:34:20,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 128 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 18:34:20,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:34:20,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 587 [2022-12-13 18:34:20,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 18:36:06,871 INFO L130 PetriNetUnfolder]: 672882/872827 cut-off events. [2022-12-13 18:36:06,871 INFO L131 PetriNetUnfolder]: For 841595/841603 co-relation queries the response was YES. [2022-12-13 18:36:09,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2471015 conditions, 872827 events. 672882/872827 cut-off events. For 841595/841603 co-relation queries the response was YES. Maximal size of possible extension queue 35704. Compared 6743776 event pairs, 490061 based on Foata normal form. 0/423378 useless extension candidates. Maximal degree in co-relation 2470983. Up to 794172 conditions per place. [2022-12-13 18:36:12,736 INFO L137 encePairwiseOnDemand]: 573/587 looper letters, 189 selfloop transitions, 16 changer transitions 4/215 dead transitions. [2022-12-13 18:36:12,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 215 transitions, 1834 flow [2022-12-13 18:36:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:36:12,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 18:36:12,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1297 transitions. [2022-12-13 18:36:12,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44190800681431003 [2022-12-13 18:36:12,739 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1297 transitions. [2022-12-13 18:36:12,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1297 transitions. [2022-12-13 18:36:12,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 18:36:12,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1297 transitions. [2022-12-13 18:36:12,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 259.4) internal successors, (1297), 5 states have internal predecessors, (1297), 0 states have call successors, (0), 0 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 18:36:12,744 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 18:36:12,744 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 18:36:12,744 INFO L175 Difference]: Start difference. First operand has 100 places, 128 transitions, 874 flow. Second operand 5 states and 1297 transitions. [2022-12-13 18:36:12,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 215 transitions, 1834 flow [2022-12-13 18:36:15,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 215 transitions, 1822 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-13 18:36:15,212 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 953 flow [2022-12-13 18:36:15,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=587, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=953, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2022-12-13 18:36:15,213 INFO L288 CegarLoopForPetriNet]: 73 programPoint places, 31 predicate places. [2022-12-13 18:36:15,213 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 953 flow [2022-12-13 18:36:15,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 18:36:15,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 18:36:15,213 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:36:15,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:36:15,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-12-13 18:36:15,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:15,214 INFO L85 PathProgramCache]: Analyzing trace with hash 635271714, now seen corresponding path program 1 times [2022-12-13 18:36:15,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:15,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117348605] [2022-12-13 18:36:15,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:15,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:36:15,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:15,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117348605] [2022-12-13 18:36:15,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117348605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:15,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884803855] [2022-12-13 18:36:15,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:15,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:15,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:15,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:15,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32440c6e-4f84-42b1-8f2d-b6897fc7d093/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:36:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:15,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:36:15,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:15,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 18:36:15,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:36:15,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884803855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:36:15,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:36:15,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-12-13 18:36:15,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580558507] [2022-12-13 18:36:15,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:36:15,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:36:15,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:36:15,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:36:15,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 587 [2022-12-13 18:36:15,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 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 18:36:15,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 18:36:15,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 587 [2022-12-13 18:36:15,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand