./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8 --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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- 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-e04fb08 [2022-11-16 11:09:22,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:09:22,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:09:22,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:09:22,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:09:22,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:09:22,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:09:22,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:09:22,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:09:22,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:09:22,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:09:22,512 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:09:22,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:09:22,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:09:22,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:09:22,517 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:09:22,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:09:22,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:09:22,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:09:22,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:09:22,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:09:22,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:09:22,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:09:22,531 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:09:22,536 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:09:22,536 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:09:22,537 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:09:22,538 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:09:22,539 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:09:22,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:09:22,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:09:22,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:09:22,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:09:22,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:09:22,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:09:22,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:09:22,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:09:22,548 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:09:22,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:09:22,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:09:22,551 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:09:22,552 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:09:22,581 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:09:22,582 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:09:22,582 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:09:22,583 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:09:22,584 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:09:22,584 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:09:22,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:09:22,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:09:22,586 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:09:22,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:09:22,587 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:09:22,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:09:22,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:09:22,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:09:22,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:09:22,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:09:22,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:09:22,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:09:22,590 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:09:22,590 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:09:22,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:09:22,591 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:09:22,591 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:09:22,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:09:22,592 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:09:22,592 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:09:22,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:22,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:09:22,593 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:09:22,593 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:09:22,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:09:22,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:09:22,607 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:09:22,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:09:22,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:09:22,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2022-11-16 11:09:23,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:09:23,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:09:23,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:09:23,083 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:09:23,084 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:09:23,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-16 11:09:23,197 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/data/790e769e2/a1c075d5213e410086bc0b2aa2c03423/FLAG9d5413f05 [2022-11-16 11:09:23,853 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:09:23,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-16 11:09:23,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/data/790e769e2/a1c075d5213e410086bc0b2aa2c03423/FLAG9d5413f05 [2022-11-16 11:09:24,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/data/790e769e2/a1c075d5213e410086bc0b2aa2c03423 [2022-11-16 11:09:24,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:09:24,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:09:24,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:24,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:09:24,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:09:24,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5320d62d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24, skipping insertion in model container [2022-11-16 11:09:24,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:09:24,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:09:24,619 WARN L229 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_a18296ac-35d3-4706-993b-f8dc8a3f3f75/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-16 11:09:24,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:24,639 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:09:24,672 WARN L229 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_a18296ac-35d3-4706-993b-f8dc8a3f3f75/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-16 11:09:24,677 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:09:24,698 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:09:24,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24 WrapperNode [2022-11-16 11:09:24,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:09:24,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:24,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:09:24,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:09:24,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,726 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,755 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2022-11-16 11:09:24,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:09:24,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:09:24,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:09:24,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:09:24,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:09:24,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:09:24,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:09:24,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:09:24,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (1/1) ... [2022-11-16 11:09:24,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:09:24,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:24,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:09:24,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:09:24,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:09:24,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:09:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:09:24,911 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:09:24,911 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:09:24,913 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:09:24,914 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:09:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:09:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:09:24,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:09:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:09:24,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:09:24,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:09:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:09:24,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:09:24,919 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:09:25,127 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:09:25,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:09:25,717 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:09:25,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:09:25,731 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:09:25,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:25 BoogieIcfgContainer [2022-11-16 11:09:25,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:09:25,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:09:25,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:09:25,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:09:25,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:09:24" (1/3) ... [2022-11-16 11:09:25,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7eb8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:25, skipping insertion in model container [2022-11-16 11:09:25,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:09:24" (2/3) ... [2022-11-16 11:09:25,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a7eb8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:09:25, skipping insertion in model container [2022-11-16 11:09:25,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:09:25" (3/3) ... [2022-11-16 11:09:25,758 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-11-16 11:09:25,770 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:09:25,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:09:25,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 11:09:25,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:09:25,975 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:09:26,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 219 transitions, 462 flow [2022-11-16 11:09:26,251 INFO L130 PetriNetUnfolder]: 15/216 cut-off events. [2022-11-16 11:09:26,256 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:09:26,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 15/216 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-16 11:09:26,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 219 transitions, 462 flow [2022-11-16 11:09:26,281 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 195 transitions, 405 flow [2022-11-16 11:09:26,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:09:26,305 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;@270f00aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:09:26,305 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-16 11:09:26,330 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 11:09:26,330 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:09:26,331 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:26,339 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:26,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:26,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash -2033555441, now seen corresponding path program 1 times [2022-11-16 11:09:26,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:26,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476386631] [2022-11-16 11:09:26,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:26,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:26,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:27,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476386631] [2022-11-16 11:09:27,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476386631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:27,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:27,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:27,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392665062] [2022-11-16 11:09:27,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:27,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:27,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:27,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-16 11:09:27,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 195 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:27,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-16 11:09:27,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:27,548 INFO L130 PetriNetUnfolder]: 13/324 cut-off events. [2022-11-16 11:09:27,548 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 11:09:27,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 324 events. 13/324 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1054 event pairs, 0 based on Foata normal form. 22/294 useless extension candidates. Maximal degree in co-relation 276. Up to 18 conditions per place. [2022-11-16 11:09:27,558 INFO L137 encePairwiseOnDemand]: 206/219 looper letters, 26 selfloop transitions, 4 changer transitions 3/201 dead transitions. [2022-11-16 11:09:27,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 201 transitions, 492 flow [2022-11-16 11:09:27,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1004 transitions. [2022-11-16 11:09:27,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9168949771689497 [2022-11-16 11:09:27,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1004 transitions. [2022-11-16 11:09:27,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1004 transitions. [2022-11-16 11:09:27,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:27,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1004 transitions. [2022-11-16 11:09:27,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.8) internal successors, (1004), 5 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,643 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,646 INFO L175 Difference]: Start difference. First operand has 191 places, 195 transitions, 405 flow. Second operand 5 states and 1004 transitions. [2022-11-16 11:09:27,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 201 transitions, 492 flow [2022-11-16 11:09:27,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 201 transitions, 474 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:09:27,665 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 406 flow [2022-11-16 11:09:27,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2022-11-16 11:09:27,674 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-11-16 11:09:27,675 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 406 flow [2022-11-16 11:09:27,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.5) internal successors, (774), 4 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:27,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:27,678 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:27,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:09:27,679 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:27,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:27,681 INFO L85 PathProgramCache]: Analyzing trace with hash 381600484, now seen corresponding path program 1 times [2022-11-16 11:09:27,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:27,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967692420] [2022-11-16 11:09:27,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:28,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:28,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967692420] [2022-11-16 11:09:28,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967692420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:28,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505401539] [2022-11-16 11:09:28,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:28,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:28,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:28,040 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:28,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:09:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:28,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:09:28,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:28,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:28,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:28,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505401539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:28,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:09:28,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:09:28,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593304845] [2022-11-16 11:09:28,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:28,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:09:28,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:09:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:09:28,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-16 11:09:28,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 406 flow. Second operand has 12 states, 12 states have (on average 194.66666666666666) internal successors, (2336), 12 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:28,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:28,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-16 11:09:28,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:29,129 INFO L130 PetriNetUnfolder]: 31/727 cut-off events. [2022-11-16 11:09:29,129 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-16 11:09:29,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 847 conditions, 727 events. 31/727 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3732 event pairs, 0 based on Foata normal form. 3/615 useless extension candidates. Maximal degree in co-relation 632. Up to 13 conditions per place. [2022-11-16 11:09:29,144 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 53 selfloop transitions, 18 changer transitions 0/239 dead transitions. [2022-11-16 11:09:29,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 239 transitions, 696 flow [2022-11-16 11:09:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:09:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:09:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3530 transitions. [2022-11-16 11:09:29,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8954845256215119 [2022-11-16 11:09:29,156 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3530 transitions. [2022-11-16 11:09:29,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3530 transitions. [2022-11-16 11:09:29,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:29,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3530 transitions. [2022-11-16 11:09:29,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 196.11111111111111) internal successors, (3530), 18 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 219.0) internal successors, (4161), 19 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,185 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 219.0) internal successors, (4161), 19 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,185 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 406 flow. Second operand 18 states and 3530 transitions. [2022-11-16 11:09:29,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 239 transitions, 696 flow [2022-11-16 11:09:29,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 239 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:29,199 INFO L231 Difference]: Finished difference. Result has 210 places, 200 transitions, 510 flow [2022-11-16 11:09:29,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=510, PETRI_PLACES=210, PETRI_TRANSITIONS=200} [2022-11-16 11:09:29,201 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 19 predicate places. [2022-11-16 11:09:29,202 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 200 transitions, 510 flow [2022-11-16 11:09:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 194.66666666666666) internal successors, (2336), 12 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:29,206 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:29,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:29,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:29,414 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:29,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1055286476, now seen corresponding path program 1 times [2022-11-16 11:09:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:29,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630411958] [2022-11-16 11:09:29,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:29,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:29,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:29,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630411958] [2022-11-16 11:09:29,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630411958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:29,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889214843] [2022-11-16 11:09:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:29,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:29,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:29,636 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:09:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:29,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:09:29,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:29,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:29,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889214843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:29,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:09:29,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:09:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92733777] [2022-11-16 11:09:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:09:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:09:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:29,865 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 219 [2022-11-16 11:09:29,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 200 transitions, 510 flow. Second operand has 6 states, 6 states have (on average 194.33333333333334) internal successors, (1166), 6 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:29,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:29,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 219 [2022-11-16 11:09:29,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:30,240 INFO L130 PetriNetUnfolder]: 31/723 cut-off events. [2022-11-16 11:09:30,242 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-16 11:09:30,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 865 conditions, 723 events. 31/723 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3697 event pairs, 0 based on Foata normal form. 4/612 useless extension candidates. Maximal degree in co-relation 676. Up to 36 conditions per place. [2022-11-16 11:09:30,253 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 27 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-16 11:09:30,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 206 transitions, 587 flow [2022-11-16 11:09:30,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:09:30,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:09:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1374 transitions. [2022-11-16 11:09:30,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8962818003913894 [2022-11-16 11:09:30,259 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1374 transitions. [2022-11-16 11:09:30,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1374 transitions. [2022-11-16 11:09:30,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:30,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1374 transitions. [2022-11-16 11:09:30,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 196.28571428571428) internal successors, (1374), 7 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,273 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,274 INFO L175 Difference]: Start difference. First operand has 210 places, 200 transitions, 510 flow. Second operand 7 states and 1374 transitions. [2022-11-16 11:09:30,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 206 transitions, 587 flow [2022-11-16 11:09:30,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 206 transitions, 555 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:09:30,290 INFO L231 Difference]: Finished difference. Result has 206 places, 196 transitions, 473 flow [2022-11-16 11:09:30,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=473, PETRI_PLACES=206, PETRI_TRANSITIONS=196} [2022-11-16 11:09:30,294 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 15 predicate places. [2022-11-16 11:09:30,295 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 196 transitions, 473 flow [2022-11-16 11:09:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.33333333333334) internal successors, (1166), 6 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:30,296 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:30,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:30,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:30,504 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:30,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1356593606, now seen corresponding path program 1 times [2022-11-16 11:09:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:30,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183754323] [2022-11-16 11:09:30,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:30,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:30,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:30,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183754323] [2022-11-16 11:09:30,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183754323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:30,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:30,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:30,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977833313] [2022-11-16 11:09:30,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:30,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:30,665 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 219 [2022-11-16 11:09:30,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 196 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:30,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:30,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 219 [2022-11-16 11:09:30,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:31,373 INFO L130 PetriNetUnfolder]: 376/2403 cut-off events. [2022-11-16 11:09:31,374 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2022-11-16 11:09:31,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 2403 events. 376/2403 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 19282 event pairs, 225 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 2514. Up to 604 conditions per place. [2022-11-16 11:09:31,413 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 19 selfloop transitions, 3 changer transitions 0/194 dead transitions. [2022-11-16 11:09:31,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 194 transitions, 513 flow [2022-11-16 11:09:31,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:09:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 764 transitions. [2022-11-16 11:09:31,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8721461187214612 [2022-11-16 11:09:31,417 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 764 transitions. [2022-11-16 11:09:31,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 764 transitions. [2022-11-16 11:09:31,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:31,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 764 transitions. [2022-11-16 11:09:31,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,423 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,424 INFO L175 Difference]: Start difference. First operand has 206 places, 196 transitions, 473 flow. Second operand 4 states and 764 transitions. [2022-11-16 11:09:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 194 transitions, 513 flow [2022-11-16 11:09:31,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 499 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:09:31,433 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 461 flow [2022-11-16 11:09:31,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2022-11-16 11:09:31,435 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 11 predicate places. [2022-11-16 11:09:31,435 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 461 flow [2022-11-16 11:09:31,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.25) internal successors, (749), 4 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:31,439 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:31,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:09:31,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:31,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:31,440 INFO L85 PathProgramCache]: Analyzing trace with hash -895270640, now seen corresponding path program 1 times [2022-11-16 11:09:31,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:31,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559120971] [2022-11-16 11:09:31,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:31,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:31,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:31,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559120971] [2022-11-16 11:09:31,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559120971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:31,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:31,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:09:31,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51668911] [2022-11-16 11:09:31,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:31,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:09:31,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:09:31,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:31,837 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 219 [2022-11-16 11:09:31,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 461 flow. Second operand has 8 states, 8 states have (on average 166.75) internal successors, (1334), 8 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:31,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:31,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 219 [2022-11-16 11:09:31,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:32,585 INFO L130 PetriNetUnfolder]: 296/2138 cut-off events. [2022-11-16 11:09:32,586 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-16 11:09:32,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 2138 events. 296/2138 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16746 event pairs, 160 based on Foata normal form. 0/1683 useless extension candidates. Maximal degree in co-relation 2712. Up to 481 conditions per place. [2022-11-16 11:09:32,614 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 26 selfloop transitions, 7 changer transitions 0/192 dead transitions. [2022-11-16 11:09:32,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 523 flow [2022-11-16 11:09:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:09:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:09:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1347 transitions. [2022-11-16 11:09:32,630 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7688356164383562 [2022-11-16 11:09:32,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1347 transitions. [2022-11-16 11:09:32,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1347 transitions. [2022-11-16 11:09:32,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:32,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1347 transitions. [2022-11-16 11:09:32,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 168.375) internal successors, (1347), 8 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,641 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 461 flow. Second operand 8 states and 1347 transitions. [2022-11-16 11:09:32,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 523 flow [2022-11-16 11:09:32,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 192 transitions, 517 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:09:32,647 INFO L231 Difference]: Finished difference. Result has 204 places, 192 transitions, 465 flow [2022-11-16 11:09:32,647 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=465, PETRI_PLACES=204, PETRI_TRANSITIONS=192} [2022-11-16 11:09:32,648 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 13 predicate places. [2022-11-16 11:09:32,648 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 192 transitions, 465 flow [2022-11-16 11:09:32,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 166.75) internal successors, (1334), 8 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,649 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:32,650 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:32,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:09:32,650 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:32,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2011731603, now seen corresponding path program 1 times [2022-11-16 11:09:32,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:32,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047925314] [2022-11-16 11:09:32,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:32,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:32,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:32,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047925314] [2022-11-16 11:09:32,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047925314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:32,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:32,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537949001] [2022-11-16 11:09:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:32,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:32,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:32,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:32,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 219 [2022-11-16 11:09:32,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 192 transitions, 465 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:32,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:32,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 219 [2022-11-16 11:09:32,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:33,442 INFO L130 PetriNetUnfolder]: 316/2563 cut-off events. [2022-11-16 11:09:33,443 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-11-16 11:09:33,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 2563 events. 316/2563 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 21974 event pairs, 115 based on Foata normal form. 0/2133 useless extension candidates. Maximal degree in co-relation 3355. Up to 296 conditions per place. [2022-11-16 11:09:33,483 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 26 selfloop transitions, 2 changer transitions 0/204 dead transitions. [2022-11-16 11:09:33,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 204 transitions, 550 flow [2022-11-16 11:09:33,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:09:33,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:09:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 609 transitions. [2022-11-16 11:09:33,487 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9269406392694064 [2022-11-16 11:09:33,487 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 609 transitions. [2022-11-16 11:09:33,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 609 transitions. [2022-11-16 11:09:33,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:33,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 609 transitions. [2022-11-16 11:09:33,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:33,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:33,494 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:33,494 INFO L175 Difference]: Start difference. First operand has 204 places, 192 transitions, 465 flow. Second operand 3 states and 609 transitions. [2022-11-16 11:09:33,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 204 transitions, 550 flow [2022-11-16 11:09:33,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 204 transitions, 537 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:09:33,502 INFO L231 Difference]: Finished difference. Result has 201 places, 193 transitions, 466 flow [2022-11-16 11:09:33,503 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=201, PETRI_TRANSITIONS=193} [2022-11-16 11:09:33,504 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 10 predicate places. [2022-11-16 11:09:33,504 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 193 transitions, 466 flow [2022-11-16 11:09:33,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:33,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:33,505 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:33,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:09:33,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:33,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1444544622, now seen corresponding path program 1 times [2022-11-16 11:09:33,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:33,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902890511] [2022-11-16 11:09:33,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:33,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:33,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:33,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902890511] [2022-11-16 11:09:33,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902890511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:33,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:33,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:33,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829120032] [2022-11-16 11:09:33,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:33,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:09:33,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 193 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:33,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:33,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:09:33,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:34,158 INFO L130 PetriNetUnfolder]: 326/1618 cut-off events. [2022-11-16 11:09:34,159 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-16 11:09:34,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2862 conditions, 1618 events. 326/1618 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12624 event pairs, 150 based on Foata normal form. 0/1443 useless extension candidates. Maximal degree in co-relation 2815. Up to 416 conditions per place. [2022-11-16 11:09:34,184 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 36 selfloop transitions, 4 changer transitions 0/211 dead transitions. [2022-11-16 11:09:34,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 211 transitions, 593 flow [2022-11-16 11:09:34,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 982 transitions. [2022-11-16 11:09:34,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8968036529680365 [2022-11-16 11:09:34,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 982 transitions. [2022-11-16 11:09:34,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 982 transitions. [2022-11-16 11:09:34,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:34,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 982 transitions. [2022-11-16 11:09:34,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.4) internal successors, (982), 5 states have internal predecessors, (982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,199 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,199 INFO L175 Difference]: Start difference. First operand has 201 places, 193 transitions, 466 flow. Second operand 5 states and 982 transitions. [2022-11-16 11:09:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 211 transitions, 593 flow [2022-11-16 11:09:34,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 211 transitions, 591 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:34,206 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 490 flow [2022-11-16 11:09:34,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2022-11-16 11:09:34,207 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 16 predicate places. [2022-11-16 11:09:34,208 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 490 flow [2022-11-16 11:09:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:34,209 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:09:34,209 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 455247221, now seen corresponding path program 1 times [2022-11-16 11:09:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:34,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438972549] [2022-11-16 11:09:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:34,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:34,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438972549] [2022-11-16 11:09:34,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438972549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:34,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:34,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:09:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144253825] [2022-11-16 11:09:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:34,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:09:34,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:34,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:09:34,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:09:34,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 219 [2022-11-16 11:09:34,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 490 flow. Second operand has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:34,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 219 [2022-11-16 11:09:34,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:34,874 INFO L130 PetriNetUnfolder]: 356/1978 cut-off events. [2022-11-16 11:09:34,874 INFO L131 PetriNetUnfolder]: For 262/317 co-relation queries the response was YES. [2022-11-16 11:09:34,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3000 conditions, 1978 events. 356/1978 cut-off events. For 262/317 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 17643 event pairs, 150 based on Foata normal form. 0/1613 useless extension candidates. Maximal degree in co-relation 2950. Up to 406 conditions per place. [2022-11-16 11:09:34,913 INFO L137 encePairwiseOnDemand]: 215/219 looper letters, 25 selfloop transitions, 2 changer transitions 0/206 dead transitions. [2022-11-16 11:09:34,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 206 transitions, 570 flow [2022-11-16 11:09:34,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:09:34,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:09:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 608 transitions. [2022-11-16 11:09:34,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9254185692541856 [2022-11-16 11:09:34,917 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 608 transitions. [2022-11-16 11:09:34,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 608 transitions. [2022-11-16 11:09:34,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:34,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 608 transitions. [2022-11-16 11:09:34,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,923 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 219.0) internal successors, (876), 4 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,923 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 490 flow. Second operand 3 states and 608 transitions. [2022-11-16 11:09:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 206 transitions, 570 flow [2022-11-16 11:09:34,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 206 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:34,930 INFO L231 Difference]: Finished difference. Result has 208 places, 196 transitions, 500 flow [2022-11-16 11:09:34,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=500, PETRI_PLACES=208, PETRI_TRANSITIONS=196} [2022-11-16 11:09:34,931 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 17 predicate places. [2022-11-16 11:09:34,932 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 196 transitions, 500 flow [2022-11-16 11:09:34,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.0) internal successors, (585), 3 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:34,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:34,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:34,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:09:34,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:34,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:34,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1249936986, now seen corresponding path program 1 times [2022-11-16 11:09:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:34,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693870233] [2022-11-16 11:09:34,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:34,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693870233] [2022-11-16 11:09:35,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693870233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:35,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:35,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:35,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371876457] [2022-11-16 11:09:35,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:35,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:35,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:35,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:35,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:35,043 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:09:35,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 196 transitions, 500 flow. Second operand has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:35,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:09:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:35,758 INFO L130 PetriNetUnfolder]: 476/2078 cut-off events. [2022-11-16 11:09:35,758 INFO L131 PetriNetUnfolder]: For 372/442 co-relation queries the response was YES. [2022-11-16 11:09:35,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3571 conditions, 2078 events. 476/2078 cut-off events. For 372/442 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18936 event pairs, 225 based on Foata normal form. 10/1763 useless extension candidates. Maximal degree in co-relation 3520. Up to 581 conditions per place. [2022-11-16 11:09:35,799 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 35 selfloop transitions, 4 changer transitions 0/213 dead transitions. [2022-11-16 11:09:35,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 213 transitions, 622 flow [2022-11-16 11:09:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 981 transitions. [2022-11-16 11:09:35,803 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8958904109589041 [2022-11-16 11:09:35,804 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 981 transitions. [2022-11-16 11:09:35,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 981 transitions. [2022-11-16 11:09:35,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:35,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 981 transitions. [2022-11-16 11:09:35,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 196.2) internal successors, (981), 5 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,811 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,811 INFO L175 Difference]: Start difference. First operand has 208 places, 196 transitions, 500 flow. Second operand 5 states and 981 transitions. [2022-11-16 11:09:35,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 213 transitions, 622 flow [2022-11-16 11:09:35,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 213 transitions, 620 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:09:35,819 INFO L231 Difference]: Finished difference. Result has 214 places, 198 transitions, 524 flow [2022-11-16 11:09:35,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=524, PETRI_PLACES=214, PETRI_TRANSITIONS=198} [2022-11-16 11:09:35,821 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 23 predicate places. [2022-11-16 11:09:35,821 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 198 transitions, 524 flow [2022-11-16 11:09:35,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:35,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:35,822 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:09:35,824 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:35,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2086822956, now seen corresponding path program 1 times [2022-11-16 11:09:35,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:35,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986566910] [2022-11-16 11:09:35,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:35,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:35,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:35,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:35,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986566910] [2022-11-16 11:09:35,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986566910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:35,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:35,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:09:35,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892396381] [2022-11-16 11:09:35,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:35,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:35,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:35,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:35,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:09:35,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 219 [2022-11-16 11:09:35,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 198 transitions, 524 flow. Second operand has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 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) [2022-11-16 11:09:35,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:35,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 219 [2022-11-16 11:09:35,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:37,523 INFO L130 PetriNetUnfolder]: 1146/4568 cut-off events. [2022-11-16 11:09:37,524 INFO L131 PetriNetUnfolder]: For 512/732 co-relation queries the response was YES. [2022-11-16 11:09:37,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7117 conditions, 4568 events. 1146/4568 cut-off events. For 512/732 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43319 event pairs, 395 based on Foata normal form. 5/3743 useless extension candidates. Maximal degree in co-relation 7060. Up to 1015 conditions per place. [2022-11-16 11:09:37,595 INFO L137 encePairwiseOnDemand]: 212/219 looper letters, 30 selfloop transitions, 6 changer transitions 0/208 dead transitions. [2022-11-16 11:09:37,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 208 transitions, 621 flow [2022-11-16 11:09:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:37,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:09:37,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 753 transitions. [2022-11-16 11:09:37,599 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8595890410958904 [2022-11-16 11:09:37,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 753 transitions. [2022-11-16 11:09:37,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 753 transitions. [2022-11-16 11:09:37,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:37,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 753 transitions. [2022-11-16 11:09:37,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.25) internal successors, (753), 4 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:37,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:37,605 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:37,606 INFO L175 Difference]: Start difference. First operand has 214 places, 198 transitions, 524 flow. Second operand 4 states and 753 transitions. [2022-11-16 11:09:37,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 208 transitions, 621 flow [2022-11-16 11:09:37,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 208 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:37,613 INFO L231 Difference]: Finished difference. Result has 215 places, 199 transitions, 542 flow [2022-11-16 11:09:37,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=215, PETRI_TRANSITIONS=199} [2022-11-16 11:09:37,614 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2022-11-16 11:09:37,614 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 199 transitions, 542 flow [2022-11-16 11:09:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.25) internal successors, (729), 4 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) [2022-11-16 11:09:37,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:37,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:37,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:09:37,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -267001590, now seen corresponding path program 1 times [2022-11-16 11:09:37,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:37,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610474756] [2022-11-16 11:09:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:37,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610474756] [2022-11-16 11:09:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610474756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:37,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:37,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:09:37,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708739691] [2022-11-16 11:09:37,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:37,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:09:37,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:37,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:09:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:09:37,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 219 [2022-11-16 11:09:37,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 199 transitions, 542 flow. Second operand has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:37,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:37,732 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 219 [2022-11-16 11:09:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:41,652 INFO L130 PetriNetUnfolder]: 3911/13493 cut-off events. [2022-11-16 11:09:41,653 INFO L131 PetriNetUnfolder]: For 2093/2113 co-relation queries the response was YES. [2022-11-16 11:09:41,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21297 conditions, 13493 events. 3911/13493 cut-off events. For 2093/2113 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 156411 event pairs, 1720 based on Foata normal form. 0/11218 useless extension candidates. Maximal degree in co-relation 21235. Up to 3393 conditions per place. [2022-11-16 11:09:41,830 INFO L137 encePairwiseOnDemand]: 213/219 looper letters, 30 selfloop transitions, 5 changer transitions 0/211 dead transitions. [2022-11-16 11:09:41,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 211 transitions, 642 flow [2022-11-16 11:09:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:09:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:09:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 961 transitions. [2022-11-16 11:09:41,834 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776255707762557 [2022-11-16 11:09:41,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 961 transitions. [2022-11-16 11:09:41,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 961 transitions. [2022-11-16 11:09:41,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:41,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 961 transitions. [2022-11-16 11:09:41,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 192.2) internal successors, (961), 5 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,855 INFO L175 Difference]: Start difference. First operand has 215 places, 199 transitions, 542 flow. Second operand 5 states and 961 transitions. [2022-11-16 11:09:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 211 transitions, 642 flow [2022-11-16 11:09:41,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 211 transitions, 630 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:09:41,866 INFO L231 Difference]: Finished difference. Result has 218 places, 200 transitions, 552 flow [2022-11-16 11:09:41,867 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=218, PETRI_TRANSITIONS=200} [2022-11-16 11:09:41,867 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 27 predicate places. [2022-11-16 11:09:41,868 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 200 transitions, 552 flow [2022-11-16 11:09:41,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 187.8) internal successors, (939), 5 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:41,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:41,869 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:41,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:09:41,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -182680418, now seen corresponding path program 1 times [2022-11-16 11:09:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:41,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206301455] [2022-11-16 11:09:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:41,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:41,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:42,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206301455] [2022-11-16 11:09:42,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206301455] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:42,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889660795] [2022-11-16 11:09:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:42,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:42,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:42,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:09:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:42,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:09:42,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:09:42,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:42,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889660795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:42,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:09:42,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 10 [2022-11-16 11:09:42,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851821351] [2022-11-16 11:09:42,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:42,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:09:42,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:42,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:09:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:09:42,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 219 [2022-11-16 11:09:42,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 200 transitions, 552 flow. Second operand has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:42,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:42,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 219 [2022-11-16 11:09:42,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:44,666 INFO L130 PetriNetUnfolder]: 1587/8435 cut-off events. [2022-11-16 11:09:44,667 INFO L131 PetriNetUnfolder]: For 1183/1183 co-relation queries the response was YES. [2022-11-16 11:09:44,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12779 conditions, 8435 events. 1587/8435 cut-off events. For 1183/1183 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 92461 event pairs, 1120 based on Foata normal form. 0/7129 useless extension candidates. Maximal degree in co-relation 12712. Up to 2413 conditions per place. [2022-11-16 11:09:44,857 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 67 selfloop transitions, 8 changer transitions 0/226 dead transitions. [2022-11-16 11:09:44,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 226 transitions, 778 flow [2022-11-16 11:09:44,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:09:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:09:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1407 transitions. [2022-11-16 11:09:44,864 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.803082191780822 [2022-11-16 11:09:44,864 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1407 transitions. [2022-11-16 11:09:44,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1407 transitions. [2022-11-16 11:09:44,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:44,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1407 transitions. [2022-11-16 11:09:44,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.875) internal successors, (1407), 8 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,876 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 219.0) internal successors, (1971), 9 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,877 INFO L175 Difference]: Start difference. First operand has 218 places, 200 transitions, 552 flow. Second operand 8 states and 1407 transitions. [2022-11-16 11:09:44,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 226 transitions, 778 flow [2022-11-16 11:09:44,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 226 transitions, 770 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:09:44,887 INFO L231 Difference]: Finished difference. Result has 225 places, 202 transitions, 579 flow [2022-11-16 11:09:44,888 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=579, PETRI_PLACES=225, PETRI_TRANSITIONS=202} [2022-11-16 11:09:44,889 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 34 predicate places. [2022-11-16 11:09:44,889 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 202 transitions, 579 flow [2022-11-16 11:09:44,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 171.28571428571428) internal successors, (1199), 7 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:44,890 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:44,891 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:44,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 11:09:45,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:09:45,100 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1045331791, now seen corresponding path program 2 times [2022-11-16 11:09:45,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:45,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8388596] [2022-11-16 11:09:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:45,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:45,425 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:45,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:45,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8388596] [2022-11-16 11:09:45,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8388596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:45,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963216657] [2022-11-16 11:09:45,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:09:45,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:45,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:45,428 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:45,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:09:45,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:09:45,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:09:45,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:09:45,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:09:46,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:09:46,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963216657] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:46,250 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:09:46,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:09:46,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207870377] [2022-11-16 11:09:46,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:46,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:09:46,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:46,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:09:46,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:09:46,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 219 [2022-11-16 11:09:46,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 202 transitions, 579 flow. Second operand has 18 states, 18 states have (on average 172.61111111111111) internal successors, (3107), 18 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:46,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:46,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 219 [2022-11-16 11:09:46,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:49,229 INFO L130 PetriNetUnfolder]: 1189/7388 cut-off events. [2022-11-16 11:09:49,229 INFO L131 PetriNetUnfolder]: For 883/913 co-relation queries the response was YES. [2022-11-16 11:09:49,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10640 conditions, 7388 events. 1189/7388 cut-off events. For 883/913 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 78536 event pairs, 766 based on Foata normal form. 2/6342 useless extension candidates. Maximal degree in co-relation 10566. Up to 388 conditions per place. [2022-11-16 11:09:49,586 INFO L137 encePairwiseOnDemand]: 208/219 looper letters, 148 selfloop transitions, 25 changer transitions 0/325 dead transitions. [2022-11-16 11:09:49,590 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 325 transitions, 1289 flow [2022-11-16 11:09:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:09:49,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:09:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4217 transitions. [2022-11-16 11:09:49,626 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8023211567732116 [2022-11-16 11:09:49,628 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4217 transitions. [2022-11-16 11:09:49,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4217 transitions. [2022-11-16 11:09:49,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:49,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4217 transitions. [2022-11-16 11:09:49,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 175.70833333333334) internal successors, (4217), 24 states have internal predecessors, (4217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:49,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 219.0) internal successors, (5475), 25 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:49,668 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 219.0) internal successors, (5475), 25 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:49,668 INFO L175 Difference]: Start difference. First operand has 225 places, 202 transitions, 579 flow. Second operand 24 states and 4217 transitions. [2022-11-16 11:09:49,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 325 transitions, 1289 flow [2022-11-16 11:09:49,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 325 transitions, 1271 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-16 11:09:49,680 INFO L231 Difference]: Finished difference. Result has 240 places, 206 transitions, 630 flow [2022-11-16 11:09:49,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=630, PETRI_PLACES=240, PETRI_TRANSITIONS=206} [2022-11-16 11:09:49,683 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 49 predicate places. [2022-11-16 11:09:49,683 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 206 transitions, 630 flow [2022-11-16 11:09:49,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 172.61111111111111) internal successors, (3107), 18 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:49,685 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:49,685 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:49,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:49,899 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:49,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1602991479, now seen corresponding path program 1 times [2022-11-16 11:09:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:49,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192989250] [2022-11-16 11:09:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:49,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:50,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192989250] [2022-11-16 11:09:50,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192989250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:50,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297502681] [2022-11-16 11:09:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:50,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:50,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:09:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:50,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:09:50,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:50,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:50,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:09:50,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:50,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297502681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:09:50,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:09:50,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-16 11:09:50,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502148290] [2022-11-16 11:09:50,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:09:50,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:09:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:09:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:09:50,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:09:50,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 206 transitions, 630 flow. Second operand has 10 states, 10 states have (on average 190.8) internal successors, (1908), 10 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:50,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:50,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:09:50,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:52,188 INFO L130 PetriNetUnfolder]: 1207/5224 cut-off events. [2022-11-16 11:09:52,188 INFO L131 PetriNetUnfolder]: For 998/1094 co-relation queries the response was YES. [2022-11-16 11:09:52,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9256 conditions, 5224 events. 1207/5224 cut-off events. For 998/1094 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 55190 event pairs, 212 based on Foata normal form. 99/4624 useless extension candidates. Maximal degree in co-relation 9193. Up to 624 conditions per place. [2022-11-16 11:09:52,295 INFO L137 encePairwiseOnDemand]: 210/219 looper letters, 66 selfloop transitions, 14 changer transitions 0/262 dead transitions. [2022-11-16 11:09:52,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 262 transitions, 956 flow [2022-11-16 11:09:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:09:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:09:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2527 transitions. [2022-11-16 11:09:52,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8876009834913945 [2022-11-16 11:09:52,303 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2527 transitions. [2022-11-16 11:09:52,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2527 transitions. [2022-11-16 11:09:52,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:52,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2527 transitions. [2022-11-16 11:09:52,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 194.3846153846154) internal successors, (2527), 13 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 219.0) internal successors, (3066), 14 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,319 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 219.0) internal successors, (3066), 14 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,319 INFO L175 Difference]: Start difference. First operand has 240 places, 206 transitions, 630 flow. Second operand 13 states and 2527 transitions. [2022-11-16 11:09:52,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 262 transitions, 956 flow [2022-11-16 11:09:52,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 262 transitions, 898 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-16 11:09:52,329 INFO L231 Difference]: Finished difference. Result has 240 places, 214 transitions, 661 flow [2022-11-16 11:09:52,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=661, PETRI_PLACES=240, PETRI_TRANSITIONS=214} [2022-11-16 11:09:52,331 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 49 predicate places. [2022-11-16 11:09:52,331 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 214 transitions, 661 flow [2022-11-16 11:09:52,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 190.8) internal successors, (1908), 10 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,332 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:52,332 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:52,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-16 11:09:52,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:52,539 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 952755449, now seen corresponding path program 1 times [2022-11-16 11:09:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:52,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980952713] [2022-11-16 11:09:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:52,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:52,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:52,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:52,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980952713] [2022-11-16 11:09:52,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980952713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:52,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:52,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:09:52,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512303544] [2022-11-16 11:09:52,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:52,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:09:52,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:09:52,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:09:52,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 219 [2022-11-16 11:09:52,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 214 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:52,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:52,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 219 [2022-11-16 11:09:52,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:56,594 INFO L130 PetriNetUnfolder]: 4032/11902 cut-off events. [2022-11-16 11:09:56,594 INFO L131 PetriNetUnfolder]: For 3224/7311 co-relation queries the response was YES. [2022-11-16 11:09:56,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22027 conditions, 11902 events. 4032/11902 cut-off events. For 3224/7311 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 136281 event pairs, 2919 based on Foata normal form. 7/9532 useless extension candidates. Maximal degree in co-relation 21958. Up to 6464 conditions per place. [2022-11-16 11:09:56,809 INFO L137 encePairwiseOnDemand]: 205/219 looper letters, 99 selfloop transitions, 14 changer transitions 0/271 dead transitions. [2022-11-16 11:09:56,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 271 transitions, 1049 flow [2022-11-16 11:09:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:09:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:09:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2055 transitions. [2022-11-16 11:09:56,820 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7819634703196348 [2022-11-16 11:09:56,821 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2055 transitions. [2022-11-16 11:09:56,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2055 transitions. [2022-11-16 11:09:56,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:56,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2055 transitions. [2022-11-16 11:09:56,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 171.25) internal successors, (2055), 12 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:56,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:56,832 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 219.0) internal successors, (2847), 13 states have internal predecessors, (2847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:56,832 INFO L175 Difference]: Start difference. First operand has 240 places, 214 transitions, 661 flow. Second operand 12 states and 2055 transitions. [2022-11-16 11:09:56,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 271 transitions, 1049 flow [2022-11-16 11:09:56,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 271 transitions, 1029 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-16 11:09:56,841 INFO L231 Difference]: Finished difference. Result has 253 places, 221 transitions, 721 flow [2022-11-16 11:09:56,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=721, PETRI_PLACES=253, PETRI_TRANSITIONS=221} [2022-11-16 11:09:56,843 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 62 predicate places. [2022-11-16 11:09:56,843 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 221 transitions, 721 flow [2022-11-16 11:09:56,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 165.5) internal successors, (1324), 8 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:56,844 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:56,844 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:56,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:09:56,845 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:56,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:56,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1846872278, now seen corresponding path program 1 times [2022-11-16 11:09:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406602736] [2022-11-16 11:09:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:56,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:56,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406602736] [2022-11-16 11:09:56,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406602736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:09:56,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172344413] [2022-11-16 11:09:56,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:56,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:09:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:09:56,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:09:56,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:09:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:57,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:09:57,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:09:57,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:57,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:09:57,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172344413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:57,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:09:57,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:09:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181294129] [2022-11-16 11:09:57,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:57,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:09:57,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:57,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:09:57,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:09:57,074 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:09:57,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 221 transitions, 721 flow. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:57,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:57,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:09:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:09:58,603 INFO L130 PetriNetUnfolder]: 1186/6081 cut-off events. [2022-11-16 11:09:58,604 INFO L131 PetriNetUnfolder]: For 1649/1889 co-relation queries the response was YES. [2022-11-16 11:09:58,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 6081 events. 1186/6081 cut-off events. For 1649/1889 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 66881 event pairs, 524 based on Foata normal form. 141/5621 useless extension candidates. Maximal degree in co-relation 10877. Up to 1301 conditions per place. [2022-11-16 11:09:58,710 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 24 selfloop transitions, 7 changer transitions 0/220 dead transitions. [2022-11-16 11:09:58,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 220 transitions, 768 flow [2022-11-16 11:09:58,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:09:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:09:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-16 11:09:58,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.886986301369863 [2022-11-16 11:09:58,713 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-16 11:09:58,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-16 11:09:58,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:09:58,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-16 11:09:58,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,718 INFO L175 Difference]: Start difference. First operand has 253 places, 221 transitions, 721 flow. Second operand 4 states and 777 transitions. [2022-11-16 11:09:58,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 220 transitions, 768 flow [2022-11-16 11:09:58,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 220 transitions, 758 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:09:58,737 INFO L231 Difference]: Finished difference. Result has 246 places, 216 transitions, 696 flow [2022-11-16 11:09:58,738 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=696, PETRI_PLACES=246, PETRI_TRANSITIONS=216} [2022-11-16 11:09:58,739 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 55 predicate places. [2022-11-16 11:09:58,739 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 216 transitions, 696 flow [2022-11-16 11:09:58,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:58,739 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:09:58,740 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:09:58,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:09:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:09:58,946 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:09:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:09:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash -529351538, now seen corresponding path program 1 times [2022-11-16 11:09:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:09:58,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663898601] [2022-11-16 11:09:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:09:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:09:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:09:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:09:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:09:59,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663898601] [2022-11-16 11:09:59,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663898601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:09:59,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:09:59,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:09:59,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015297933] [2022-11-16 11:09:59,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:09:59,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:09:59,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:09:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:09:59,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:09:59,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 219 [2022-11-16 11:09:59,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 216 transitions, 696 flow. Second operand has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:09:59,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:09:59,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 219 [2022-11-16 11:09:59,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:05,814 INFO L130 PetriNetUnfolder]: 12456/34236 cut-off events. [2022-11-16 11:10:05,814 INFO L131 PetriNetUnfolder]: For 9583/9619 co-relation queries the response was YES. [2022-11-16 11:10:06,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62042 conditions, 34236 events. 12456/34236 cut-off events. For 9583/9619 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 426093 event pairs, 664 based on Foata normal form. 1047/29750 useless extension candidates. Maximal degree in co-relation 61967. Up to 11195 conditions per place. [2022-11-16 11:10:06,189 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 32 selfloop transitions, 8 changer transitions 0/220 dead transitions. [2022-11-16 11:10:06,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 220 transitions, 774 flow [2022-11-16 11:10:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:10:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:10:06,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1116 transitions. [2022-11-16 11:10:06,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8493150684931506 [2022-11-16 11:10:06,192 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1116 transitions. [2022-11-16 11:10:06,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1116 transitions. [2022-11-16 11:10:06,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:06,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1116 transitions. [2022-11-16 11:10:06,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:06,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:06,198 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 219.0) internal successors, (1533), 7 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:06,199 INFO L175 Difference]: Start difference. First operand has 246 places, 216 transitions, 696 flow. Second operand 6 states and 1116 transitions. [2022-11-16 11:10:06,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 220 transitions, 774 flow [2022-11-16 11:10:06,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 220 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:10:06,375 INFO L231 Difference]: Finished difference. Result has 242 places, 212 transitions, 670 flow [2022-11-16 11:10:06,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=670, PETRI_PLACES=242, PETRI_TRANSITIONS=212} [2022-11-16 11:10:06,376 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 51 predicate places. [2022-11-16 11:10:06,376 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 212 transitions, 670 flow [2022-11-16 11:10:06,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 182.33333333333334) internal successors, (1094), 6 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:06,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:06,377 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:06,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:10:06,378 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:06,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:06,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1290546775, now seen corresponding path program 1 times [2022-11-16 11:10:06,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:06,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592295033] [2022-11-16 11:10:06,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:06,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:10:06,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592295033] [2022-11-16 11:10:06,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592295033] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:06,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745246056] [2022-11-16 11:10:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:06,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:06,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:06,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:06,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:10:06,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:06,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:10:06,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:07,004 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:10:07,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:10:07,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745246056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:07,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:10:07,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2022-11-16 11:10:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186223003] [2022-11-16 11:10:07,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:07,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:10:07,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:07,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:10:07,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:10:07,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 219 [2022-11-16 11:10:07,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 212 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 162.61111111111111) internal successors, (2927), 18 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:07,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:07,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 219 [2022-11-16 11:10:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:11,722 INFO L130 PetriNetUnfolder]: 3545/13772 cut-off events. [2022-11-16 11:10:11,722 INFO L131 PetriNetUnfolder]: For 3583/10453 co-relation queries the response was YES. [2022-11-16 11:10:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25533 conditions, 13772 events. 3545/13772 cut-off events. For 3583/10453 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 155671 event pairs, 1198 based on Foata normal form. 98/12873 useless extension candidates. Maximal degree in co-relation 25456. Up to 1709 conditions per place. [2022-11-16 11:10:11,996 INFO L137 encePairwiseOnDemand]: 201/219 looper letters, 167 selfloop transitions, 28 changer transitions 0/337 dead transitions. [2022-11-16 11:10:11,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 337 transitions, 1448 flow [2022-11-16 11:10:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:10:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:10:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3494 transitions. [2022-11-16 11:10:12,001 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7597303761687323 [2022-11-16 11:10:12,001 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3494 transitions. [2022-11-16 11:10:12,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3494 transitions. [2022-11-16 11:10:12,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:12,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3494 transitions. [2022-11-16 11:10:12,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 166.38095238095238) internal successors, (3494), 21 states have internal predecessors, (3494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 219.0) internal successors, (4818), 22 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,018 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 219.0) internal successors, (4818), 22 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,018 INFO L175 Difference]: Start difference. First operand has 242 places, 212 transitions, 670 flow. Second operand 21 states and 3494 transitions. [2022-11-16 11:10:12,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 337 transitions, 1448 flow [2022-11-16 11:10:12,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 337 transitions, 1432 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:10:12,046 INFO L231 Difference]: Finished difference. Result has 261 places, 221 transitions, 778 flow [2022-11-16 11:10:12,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=778, PETRI_PLACES=261, PETRI_TRANSITIONS=221} [2022-11-16 11:10:12,048 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 70 predicate places. [2022-11-16 11:10:12,048 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 221 transitions, 778 flow [2022-11-16 11:10:12,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 162.61111111111111) internal successors, (2927), 18 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:12,049 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:12,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:12,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:10:12,255 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:12,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:12,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1445075780, now seen corresponding path program 1 times [2022-11-16 11:10:12,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:12,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649872954] [2022-11-16 11:10:12,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:12,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:12,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:12,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649872954] [2022-11-16 11:10:12,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649872954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:12,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168462778] [2022-11-16 11:10:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:12,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:12,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:12,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:12,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:10:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:12,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:10:12,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:10:12,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:10:12,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168462778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:12,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:10:12,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-16 11:10:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900563972] [2022-11-16 11:10:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:12,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:10:12,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:10:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:10:12,804 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 219 [2022-11-16 11:10:12,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 221 transitions, 778 flow. Second operand has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:12,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:12,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 219 [2022-11-16 11:10:12,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:17,303 INFO L130 PetriNetUnfolder]: 4592/15503 cut-off events. [2022-11-16 11:10:17,303 INFO L131 PetriNetUnfolder]: For 6128/23030 co-relation queries the response was YES. [2022-11-16 11:10:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29476 conditions, 15503 events. 4592/15503 cut-off events. For 6128/23030 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 186630 event pairs, 1291 based on Foata normal form. 305/13936 useless extension candidates. Maximal degree in co-relation 29394. Up to 3090 conditions per place. [2022-11-16 11:10:17,603 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 56 selfloop transitions, 13 changer transitions 5/250 dead transitions. [2022-11-16 11:10:17,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 250 transitions, 1038 flow [2022-11-16 11:10:17,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:10:17,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:10:17,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1246 transitions. [2022-11-16 11:10:17,606 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8127853881278538 [2022-11-16 11:10:17,606 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1246 transitions. [2022-11-16 11:10:17,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1246 transitions. [2022-11-16 11:10:17,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:17,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1246 transitions. [2022-11-16 11:10:17,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.0) internal successors, (1246), 7 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,611 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 219.0) internal successors, (1752), 8 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,611 INFO L175 Difference]: Start difference. First operand has 261 places, 221 transitions, 778 flow. Second operand 7 states and 1246 transitions. [2022-11-16 11:10:17,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 250 transitions, 1038 flow [2022-11-16 11:10:17,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 250 transitions, 998 flow, removed 3 selfloop flow, removed 13 redundant places. [2022-11-16 11:10:17,643 INFO L231 Difference]: Finished difference. Result has 253 places, 218 transitions, 756 flow [2022-11-16 11:10:17,644 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=734, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=756, PETRI_PLACES=253, PETRI_TRANSITIONS=218} [2022-11-16 11:10:17,644 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 62 predicate places. [2022-11-16 11:10:17,645 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 218 transitions, 756 flow [2022-11-16 11:10:17,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:17,645 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:17,646 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:17,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:17,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:17,851 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:17,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1626259074, now seen corresponding path program 1 times [2022-11-16 11:10:17,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:17,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811430694] [2022-11-16 11:10:17,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:17,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:18,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811430694] [2022-11-16 11:10:18,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811430694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:18,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259436636] [2022-11-16 11:10:18,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:18,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:18,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:18,035 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:18,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:10:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:18,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:10:18,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:18,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:18,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259436636] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:18,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:10:18,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:10:18,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494920025] [2022-11-16 11:10:18,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:18,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:10:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:18,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:10:18,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:10:18,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:10:18,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 218 transitions, 756 flow. Second operand has 16 states, 16 states have (on average 190.5) internal successors, (3048), 16 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:18,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:18,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:10:18,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:21,981 INFO L130 PetriNetUnfolder]: 2502/10520 cut-off events. [2022-11-16 11:10:21,981 INFO L131 PetriNetUnfolder]: For 4500/5075 co-relation queries the response was YES. [2022-11-16 11:10:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20154 conditions, 10520 events. 2502/10520 cut-off events. For 4500/5075 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 125401 event pairs, 286 based on Foata normal form. 335/9455 useless extension candidates. Maximal degree in co-relation 20079. Up to 1445 conditions per place. [2022-11-16 11:10:22,218 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 103 selfloop transitions, 24 changer transitions 0/318 dead transitions. [2022-11-16 11:10:22,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 318 transitions, 1338 flow [2022-11-16 11:10:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:10:22,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 11:10:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3891 transitions. [2022-11-16 11:10:22,222 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8883561643835617 [2022-11-16 11:10:22,222 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3891 transitions. [2022-11-16 11:10:22,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3891 transitions. [2022-11-16 11:10:22,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:22,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3891 transitions. [2022-11-16 11:10:22,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 194.55) internal successors, (3891), 20 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:22,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 219.0) internal successors, (4599), 21 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:22,533 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 219.0) internal successors, (4599), 21 states have internal predecessors, (4599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:22,533 INFO L175 Difference]: Start difference. First operand has 253 places, 218 transitions, 756 flow. Second operand 20 states and 3891 transitions. [2022-11-16 11:10:22,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 318 transitions, 1338 flow [2022-11-16 11:10:22,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 318 transitions, 1312 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:10:22,568 INFO L231 Difference]: Finished difference. Result has 272 places, 233 transitions, 908 flow [2022-11-16 11:10:22,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=908, PETRI_PLACES=272, PETRI_TRANSITIONS=233} [2022-11-16 11:10:22,569 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 81 predicate places. [2022-11-16 11:10:22,569 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 233 transitions, 908 flow [2022-11-16 11:10:22,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 190.5) internal successors, (3048), 16 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:22,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:22,571 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:22,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:22,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:22,780 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:22,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:22,781 INFO L85 PathProgramCache]: Analyzing trace with hash -734715674, now seen corresponding path program 1 times [2022-11-16 11:10:22,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:22,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192914034] [2022-11-16 11:10:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:22,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:10:22,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:22,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192914034] [2022-11-16 11:10:22,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192914034] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:22,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757395261] [2022-11-16 11:10:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:22,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:22,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:22,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:22,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:10:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:23,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:10:23,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:10:23,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:10:23,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757395261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:23,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:10:23,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 11:10:23,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208130238] [2022-11-16 11:10:23,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:23,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:23,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:23,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:23,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:10:23,071 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 219 [2022-11-16 11:10:23,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 233 transitions, 908 flow. Second operand has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:23,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:23,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 219 [2022-11-16 11:10:23,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:25,035 INFO L130 PetriNetUnfolder]: 581/4296 cut-off events. [2022-11-16 11:10:25,035 INFO L131 PetriNetUnfolder]: For 1775/6000 co-relation queries the response was YES. [2022-11-16 11:10:25,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 4296 events. 581/4296 cut-off events. For 1775/6000 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 41990 event pairs, 20 based on Foata normal form. 120/4124 useless extension candidates. Maximal degree in co-relation 7769. Up to 706 conditions per place. [2022-11-16 11:10:25,118 INFO L137 encePairwiseOnDemand]: 214/219 looper letters, 26 selfloop transitions, 7 changer transitions 0/234 dead transitions. [2022-11-16 11:10:25,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 234 transitions, 970 flow [2022-11-16 11:10:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:10:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:10:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2022-11-16 11:10:25,120 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.886986301369863 [2022-11-16 11:10:25,120 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2022-11-16 11:10:25,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2022-11-16 11:10:25,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:25,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2022-11-16 11:10:25,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:25,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:25,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 219.0) internal successors, (1095), 5 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:25,123 INFO L175 Difference]: Start difference. First operand has 272 places, 233 transitions, 908 flow. Second operand 4 states and 777 transitions. [2022-11-16 11:10:25,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 234 transitions, 970 flow [2022-11-16 11:10:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 234 transitions, 906 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-11-16 11:10:25,142 INFO L231 Difference]: Finished difference. Result has 264 places, 230 transitions, 840 flow [2022-11-16 11:10:25,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=840, PETRI_PLACES=264, PETRI_TRANSITIONS=230} [2022-11-16 11:10:25,143 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 73 predicate places. [2022-11-16 11:10:25,144 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 230 transitions, 840 flow [2022-11-16 11:10:25,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:25,144 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:25,144 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:25,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:25,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:25,350 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:25,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:25,350 INFO L85 PathProgramCache]: Analyzing trace with hash 156329635, now seen corresponding path program 1 times [2022-11-16 11:10:25,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:25,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097448835] [2022-11-16 11:10:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:25,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,569 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:10:25,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:25,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097448835] [2022-11-16 11:10:25,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097448835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:25,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435410744] [2022-11-16 11:10:25,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:25,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:25,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:25,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:25,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:10:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:25,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:10:25,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:26,085 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:26,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:10:26,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:26,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435410744] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:10:26,506 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:10:26,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 27 [2022-11-16 11:10:26,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229451881] [2022-11-16 11:10:26,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:10:26,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:10:26,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:26,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:10:26,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:10:26,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 219 [2022-11-16 11:10:26,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 230 transitions, 840 flow. Second operand has 27 states, 27 states have (on average 161.88888888888889) internal successors, (4371), 27 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:26,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:26,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 219 [2022-11-16 11:10:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:32,823 INFO L130 PetriNetUnfolder]: 3292/11549 cut-off events. [2022-11-16 11:10:32,823 INFO L131 PetriNetUnfolder]: For 5300/172335 co-relation queries the response was YES. [2022-11-16 11:10:33,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23297 conditions, 11549 events. 3292/11549 cut-off events. For 5300/172335 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 124777 event pairs, 750 based on Foata normal form. 230/10528 useless extension candidates. Maximal degree in co-relation 23214. Up to 1284 conditions per place. [2022-11-16 11:10:33,206 INFO L137 encePairwiseOnDemand]: 202/219 looper letters, 243 selfloop transitions, 39 changer transitions 0/436 dead transitions. [2022-11-16 11:10:33,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 436 transitions, 2079 flow [2022-11-16 11:10:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 11:10:33,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 11:10:33,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5635 transitions. [2022-11-16 11:10:33,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567821649207628 [2022-11-16 11:10:33,214 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5635 transitions. [2022-11-16 11:10:33,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5635 transitions. [2022-11-16 11:10:33,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:33,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5635 transitions. [2022-11-16 11:10:33,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 165.73529411764707) internal successors, (5635), 34 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:33,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 219.0) internal successors, (7665), 35 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:33,234 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 219.0) internal successors, (7665), 35 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:33,235 INFO L175 Difference]: Start difference. First operand has 264 places, 230 transitions, 840 flow. Second operand 34 states and 5635 transitions. [2022-11-16 11:10:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 436 transitions, 2079 flow [2022-11-16 11:10:33,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 436 transitions, 2055 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:10:33,264 INFO L231 Difference]: Finished difference. Result has 300 places, 240 transitions, 995 flow [2022-11-16 11:10:33,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=995, PETRI_PLACES=300, PETRI_TRANSITIONS=240} [2022-11-16 11:10:33,265 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 109 predicate places. [2022-11-16 11:10:33,265 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 240 transitions, 995 flow [2022-11-16 11:10:33,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 161.88888888888889) internal successors, (4371), 27 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:33,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:33,266 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:33,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:33,471 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1616155782, now seen corresponding path program 2 times [2022-11-16 11:10:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:33,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062250561] [2022-11-16 11:10:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-16 11:10:33,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:33,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062250561] [2022-11-16 11:10:33,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062250561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:33,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764411549] [2022-11-16 11:10:33,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:10:33,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:33,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:34,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:34,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:10:34,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:10:34,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:34,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:10:34,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:10:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-16 11:10:34,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:10:34,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764411549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:10:34,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:10:34,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2022-11-16 11:10:34,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917202749] [2022-11-16 11:10:34,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:10:34,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:10:34,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:10:34,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:10:34,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:10:34,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 219 [2022-11-16 11:10:34,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 240 transitions, 995 flow. Second operand has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:34,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:10:34,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 219 [2022-11-16 11:10:34,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:10:39,545 INFO L130 PetriNetUnfolder]: 3123/13431 cut-off events. [2022-11-16 11:10:39,545 INFO L131 PetriNetUnfolder]: For 7451/130138 co-relation queries the response was YES. [2022-11-16 11:10:39,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25534 conditions, 13431 events. 3123/13431 cut-off events. For 7451/130138 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 156138 event pairs, 1566 based on Foata normal form. 98/12080 useless extension candidates. Maximal degree in co-relation 25444. Up to 3200 conditions per place. [2022-11-16 11:10:39,943 INFO L137 encePairwiseOnDemand]: 211/219 looper letters, 45 selfloop transitions, 18 changer transitions 0/260 dead transitions. [2022-11-16 11:10:39,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 260 transitions, 1216 flow [2022-11-16 11:10:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:10:39,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:10:39,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 940 transitions. [2022-11-16 11:10:39,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8584474885844748 [2022-11-16 11:10:39,945 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 940 transitions. [2022-11-16 11:10:39,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 940 transitions. [2022-11-16 11:10:39,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:10:39,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 940 transitions. [2022-11-16 11:10:39,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:39,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:39,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 219.0) internal successors, (1314), 6 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:39,948 INFO L175 Difference]: Start difference. First operand has 300 places, 240 transitions, 995 flow. Second operand 5 states and 940 transitions. [2022-11-16 11:10:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 260 transitions, 1216 flow [2022-11-16 11:10:39,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 260 transitions, 1150 flow, removed 6 selfloop flow, removed 18 redundant places. [2022-11-16 11:10:39,975 INFO L231 Difference]: Finished difference. Result has 286 places, 245 transitions, 1023 flow [2022-11-16 11:10:39,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=219, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=286, PETRI_TRANSITIONS=245} [2022-11-16 11:10:39,976 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 95 predicate places. [2022-11-16 11:10:39,976 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 245 transitions, 1023 flow [2022-11-16 11:10:39,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:10:39,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:10:39,977 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:10:39,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:10:40,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:40,183 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-16 11:10:40,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:10:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash -195022049, now seen corresponding path program 2 times [2022-11-16 11:10:40,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:10:40,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131124220] [2022-11-16 11:10:40,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:10:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:10:40,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:10:40,612 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:10:40,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:10:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131124220] [2022-11-16 11:10:40,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131124220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:10:40,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269270060] [2022-11-16 11:10:40,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:10:40,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:10:40,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:10:40,629 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:10:40,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a18296ac-35d3-4706-993b-f8dc8a3f3f75/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:10:40,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:10:40,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:10:40,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:10:40,750 INFO L286 TraceCheckSpWp]: Computing forward predicates...