./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/reorder_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/reorder_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a --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 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 --- 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-b5237d8 [2022-11-21 16:16:20,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:16:20,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:16:20,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:16:20,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:16:20,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:16:20,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:16:20,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:16:20,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:16:20,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:16:20,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:16:20,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:16:20,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:16:20,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:16:20,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:16:20,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:16:20,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:16:20,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:16:20,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:16:20,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:16:20,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:16:20,548 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:16:20,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:16:20,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:16:20,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:16:20,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:16:20,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:16:20,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:16:20,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:16:20,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:16:20,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:16:20,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:16:20,573 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:16:20,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:16:20,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:16:20,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:16:20,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:16:20,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:16:20,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:16:20,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:16:20,580 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:16:20,581 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 16:16:20,630 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:16:20,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:16:20,631 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:16:20,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:16:20,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:16:20,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:16:20,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:16:20,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:16:20,634 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:16:20,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:16:20,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:16:20,635 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 16:16:20,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:16:20,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:16:20,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:16:20,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:16:20,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:16:20,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:16:20,637 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 16:16:20,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:16:20,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:16:20,638 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:16:20,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:16:20,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:16:20,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:16:20,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:16:20,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:16:20,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:16:20,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:16:20,640 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:16:20,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:16:20,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:16:20,641 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:16:20,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:16:20,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:16:20,642 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_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c8e5f65b78a025b6376ca00ad63a807363d8e09dfbfc133c782b166d87996a6 [2022-11-21 16:16:20,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:16:20,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:16:20,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:16:20,952 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:16:20,952 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:16:20,954 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread/reorder_2.i [2022-11-21 16:16:24,035 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:16:24,364 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:16:24,368 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/sv-benchmarks/c/pthread/reorder_2.i [2022-11-21 16:16:24,389 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/data/3d2bcb99d/d7cc3881da9248eb8b44fb2eceb35b6f/FLAG466c21fdf [2022-11-21 16:16:24,409 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/data/3d2bcb99d/d7cc3881da9248eb8b44fb2eceb35b6f [2022-11-21 16:16:24,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:16:24,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:16:24,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:16:24,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:16:24,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:16:24,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:16:24" (1/1) ... [2022-11-21 16:16:24,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a755ccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:24, skipping insertion in model container [2022-11-21 16:16:24,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:16:24" (1/1) ... [2022-11-21 16:16:24,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:16:24,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:16:25,196 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-21 16:16:25,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:16:25,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:16:25,291 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/sv-benchmarks/c/pthread/reorder_2.i[59793,59806] [2022-11-21 16:16:25,292 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:16:25,389 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:16:25,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25 WrapperNode [2022-11-21 16:16:25,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:16:25,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:16:25,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:16:25,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:16:25,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,461 INFO L138 Inliner]: procedures = 370, calls = 36, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 143 [2022-11-21 16:16:25,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:16:25,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:16:25,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:16:25,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:16:25,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,486 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:16:25,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:16:25,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:16:25,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:16:25,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (1/1) ... [2022-11-21 16:16:25,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:16:25,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:25,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:16:25,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:16:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:16:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:16:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:16:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure setThread [2022-11-21 16:16:25,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setThread [2022-11-21 16:16:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:16:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:16:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure checkThread [2022-11-21 16:16:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure checkThread [2022-11-21 16:16:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:16:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:16:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:16:25,586 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 16:16:25,777 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:16:25,779 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:16:26,077 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:16:26,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:16:26,086 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:16:26,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:16:26 BoogieIcfgContainer [2022-11-21 16:16:26,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:16:26,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:16:26,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:16:26,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:16:26,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:16:24" (1/3) ... [2022-11-21 16:16:26,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e07e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:16:26, skipping insertion in model container [2022-11-21 16:16:26,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:16:25" (2/3) ... [2022-11-21 16:16:26,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e07e6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:16:26, skipping insertion in model container [2022-11-21 16:16:26,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:16:26" (3/3) ... [2022-11-21 16:16:26,097 INFO L112 eAbstractionObserver]: Analyzing ICFG reorder_2.i [2022-11-21 16:16:26,106 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:16:26,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:16:26,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-21 16:16:26,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:16:26,276 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-21 16:16:26,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 172 transitions, 366 flow [2022-11-21 16:16:26,445 INFO L130 PetriNetUnfolder]: 35/367 cut-off events. [2022-11-21 16:16:26,445 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-21 16:16:26,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 367 events. 35/367 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1258 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 185. Up to 8 conditions per place. [2022-11-21 16:16:26,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 172 transitions, 366 flow [2022-11-21 16:16:26,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 172 transitions, 366 flow [2022-11-21 16:16:26,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:16:26,475 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;@7da61fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:16:26,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:16:26,501 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-11-21 16:16:26,501 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:16:26,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:26,502 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] [2022-11-21 16:16:26,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:26,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1839916508, now seen corresponding path program 1 times [2022-11-21 16:16:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:26,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845661890] [2022-11-21 16:16:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:26,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:26,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:26,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845661890] [2022-11-21 16:16:26,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845661890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:26,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:26,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272604267] [2022-11-21 16:16:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:26,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:27,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 172 [2022-11-21 16:16:27,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 172 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:27,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 172 [2022-11-21 16:16:27,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:27,298 INFO L130 PetriNetUnfolder]: 10/428 cut-off events. [2022-11-21 16:16:27,298 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-11-21 16:16:27,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 428 events. 10/428 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1547 event pairs, 0 based on Foata normal form. 72/445 useless extension candidates. Maximal degree in co-relation 238. Up to 66 conditions per place. [2022-11-21 16:16:27,304 INFO L137 encePairwiseOnDemand]: 150/172 looper letters, 44 selfloop transitions, 10 changer transitions 29/182 dead transitions. [2022-11-21 16:16:27,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 182 transitions, 514 flow [2022-11-21 16:16:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:27,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 697 transitions. [2022-11-21 16:16:27,328 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8104651162790698 [2022-11-21 16:16:27,329 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 697 transitions. [2022-11-21 16:16:27,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 697 transitions. [2022-11-21 16:16:27,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:27,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 697 transitions. [2022-11-21 16:16:27,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,348 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,349 INFO L175 Difference]: Start difference. First operand has 162 places, 172 transitions, 366 flow. Second operand 5 states and 697 transitions. [2022-11-21 16:16:27,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 182 transitions, 514 flow [2022-11-21 16:16:27,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 182 transitions, 514 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:27,359 INFO L231 Difference]: Finished difference. Result has 164 places, 136 transitions, 328 flow [2022-11-21 16:16:27,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=164, PETRI_TRANSITIONS=136} [2022-11-21 16:16:27,364 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, 2 predicate places. [2022-11-21 16:16:27,365 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 136 transitions, 328 flow [2022-11-21 16:16:27,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,365 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:27,366 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] [2022-11-21 16:16:27,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:16:27,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:27,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:27,367 INFO L85 PathProgramCache]: Analyzing trace with hash 849432514, now seen corresponding path program 1 times [2022-11-21 16:16:27,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:27,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903103398] [2022-11-21 16:16:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:27,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:27,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903103398] [2022-11-21 16:16:27,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903103398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:27,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:27,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:16:27,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991486006] [2022-11-21 16:16:27,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:27,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:16:27,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:27,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:16:27,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:16:27,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 172 [2022-11-21 16:16:27,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 136 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:27,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 172 [2022-11-21 16:16:27,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:27,799 INFO L130 PetriNetUnfolder]: 8/329 cut-off events. [2022-11-21 16:16:27,799 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-21 16:16:27,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 329 events. 8/329 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 952 event pairs, 2 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 262. Up to 135 conditions per place. [2022-11-21 16:16:27,802 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 50 selfloop transitions, 6 changer transitions 0/143 dead transitions. [2022-11-21 16:16:27,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 143 transitions, 457 flow [2022-11-21 16:16:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:27,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2022-11-21 16:16:27,805 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7255813953488373 [2022-11-21 16:16:27,805 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2022-11-21 16:16:27,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2022-11-21 16:16:27,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:27,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2022-11-21 16:16:27,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,813 INFO L175 Difference]: Start difference. First operand has 164 places, 136 transitions, 328 flow. Second operand 5 states and 624 transitions. [2022-11-21 16:16:27,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 143 transitions, 457 flow [2022-11-21 16:16:27,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 453 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 16:16:27,822 INFO L231 Difference]: Finished difference. Result has 143 places, 140 transitions, 366 flow [2022-11-21 16:16:27,823 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=366, PETRI_PLACES=143, PETRI_TRANSITIONS=140} [2022-11-21 16:16:27,826 INFO L288 CegarLoopForPetriNet]: 162 programPoint places, -19 predicate places. [2022-11-21 16:16:27,826 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 140 transitions, 366 flow [2022-11-21 16:16:27,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.8) internal successors, (589), 5 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:27,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:27,828 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] [2022-11-21 16:16:27,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:16:27,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:27,835 INFO L85 PathProgramCache]: Analyzing trace with hash 90072080, now seen corresponding path program 1 times [2022-11-21 16:16:27,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:27,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241005266] [2022-11-21 16:16:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:27,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:16:27,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:16:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:16:27,982 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:16:27,982 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:16:27,984 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:16:27,986 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:16:27,987 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:16:27,988 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:16:27,989 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:16:27,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:16:27,990 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:16:27,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:16:27,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:16:27,991 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:16:27,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:16:27,992 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-21 16:16:27,995 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:16:27,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-21 16:16:28,061 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-11-21 16:16:28,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 191 transitions, 430 flow [2022-11-21 16:16:28,247 INFO L130 PetriNetUnfolder]: 147/1218 cut-off events. [2022-11-21 16:16:28,248 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-21 16:16:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1315 conditions, 1218 events. 147/1218 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6546 event pairs, 2 based on Foata normal form. 0/1008 useless extension candidates. Maximal degree in co-relation 696. Up to 32 conditions per place. [2022-11-21 16:16:28,277 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 191 transitions, 430 flow [2022-11-21 16:16:28,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 191 transitions, 430 flow [2022-11-21 16:16:28,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:16:28,297 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;@7da61fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:16:28,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:16:28,313 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-11-21 16:16:28,314 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:16:28,314 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:28,314 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] [2022-11-21 16:16:28,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1647219210, now seen corresponding path program 1 times [2022-11-21 16:16:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:28,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192738383] [2022-11-21 16:16:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:28,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:28,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:28,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192738383] [2022-11-21 16:16:28,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192738383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:28,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:28,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:28,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312319577] [2022-11-21 16:16:28,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:28,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:28,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:28,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:28,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:28,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:28,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 191 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:28,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:28,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:28,942 INFO L130 PetriNetUnfolder]: 85/1681 cut-off events. [2022-11-21 16:16:28,942 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-21 16:16:28,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2301 conditions, 1681 events. 85/1681 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11690 event pairs, 0 based on Foata normal form. 479/1910 useless extension candidates. Maximal degree in co-relation 1134. Up to 267 conditions per place. [2022-11-21 16:16:28,953 INFO L137 encePairwiseOnDemand]: 168/191 looper letters, 65 selfloop transitions, 10 changer transitions 27/212 dead transitions. [2022-11-21 16:16:28,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 212 transitions, 650 flow [2022-11-21 16:16:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:28,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 775 transitions. [2022-11-21 16:16:28,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115183246073299 [2022-11-21 16:16:28,957 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 775 transitions. [2022-11-21 16:16:28,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 775 transitions. [2022-11-21 16:16:28,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:28,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 775 transitions. [2022-11-21 16:16:28,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:28,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:28,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:28,963 INFO L175 Difference]: Start difference. First operand has 180 places, 191 transitions, 430 flow. Second operand 5 states and 775 transitions. [2022-11-21 16:16:28,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 212 transitions, 650 flow [2022-11-21 16:16:28,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 212 transitions, 650 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:28,973 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 432 flow [2022-11-21 16:16:28,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2022-11-21 16:16:29,010 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 6 predicate places. [2022-11-21 16:16:29,011 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 432 flow [2022-11-21 16:16:29,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:29,011 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] [2022-11-21 16:16:29,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:16:29,012 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash 863975407, now seen corresponding path program 1 times [2022-11-21 16:16:29,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:29,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842725398] [2022-11-21 16:16:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:29,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:29,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842725398] [2022-11-21 16:16:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842725398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:16:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495774194] [2022-11-21 16:16:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:29,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:16:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:16:29,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:16:29,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 191 [2022-11-21 16:16:29,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:29,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 191 [2022-11-21 16:16:29,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:29,531 INFO L130 PetriNetUnfolder]: 85/1195 cut-off events. [2022-11-21 16:16:29,531 INFO L131 PetriNetUnfolder]: For 326/326 co-relation queries the response was YES. [2022-11-21 16:16:29,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1195 events. 85/1195 cut-off events. For 326/326 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7064 event pairs, 22 based on Foata normal form. 0/1038 useless extension candidates. Maximal degree in co-relation 1030. Up to 521 conditions per place. [2022-11-21 16:16:29,538 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 61 selfloop transitions, 6 changer transitions 0/168 dead transitions. [2022-11-21 16:16:29,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 168 transitions, 584 flow [2022-11-21 16:16:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 685 transitions. [2022-11-21 16:16:29,541 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7172774869109948 [2022-11-21 16:16:29,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 685 transitions. [2022-11-21 16:16:29,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 685 transitions. [2022-11-21 16:16:29,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:29,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 685 transitions. [2022-11-21 16:16:29,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,547 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 432 flow. Second operand 5 states and 685 transitions. [2022-11-21 16:16:29,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 168 transitions, 584 flow [2022-11-21 16:16:29,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 168 transitions, 584 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:29,554 INFO L231 Difference]: Finished difference. Result has 167 places, 165 transitions, 475 flow [2022-11-21 16:16:29,555 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=167, PETRI_TRANSITIONS=165} [2022-11-21 16:16:29,557 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -13 predicate places. [2022-11-21 16:16:29,557 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 165 transitions, 475 flow [2022-11-21 16:16:29,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,557 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:29,558 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] [2022-11-21 16:16:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:16:29,558 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1254736220, now seen corresponding path program 1 times [2022-11-21 16:16:29,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:29,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633717773] [2022-11-21 16:16:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:29,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:29,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:29,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633717773] [2022-11-21 16:16:29,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633717773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:29,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:29,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207902713] [2022-11-21 16:16:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:29,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:29,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 165 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:29,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:29,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:29,975 INFO L130 PetriNetUnfolder]: 85/1189 cut-off events. [2022-11-21 16:16:29,975 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2022-11-21 16:16:29,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1992 conditions, 1189 events. 85/1189 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6960 event pairs, 0 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 1659. Up to 262 conditions per place. [2022-11-21 16:16:29,981 INFO L137 encePairwiseOnDemand]: 179/191 looper letters, 66 selfloop transitions, 11 changer transitions 0/190 dead transitions. [2022-11-21 16:16:29,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 190 transitions, 707 flow [2022-11-21 16:16:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:29,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:29,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-21 16:16:29,985 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.787434554973822 [2022-11-21 16:16:29,985 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-21 16:16:29,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-21 16:16:29,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:29,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-21 16:16:29,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:29,991 INFO L175 Difference]: Start difference. First operand has 167 places, 165 transitions, 475 flow. Second operand 5 states and 752 transitions. [2022-11-21 16:16:29,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 190 transitions, 707 flow [2022-11-21 16:16:29,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 190 transitions, 704 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:16:29,997 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 519 flow [2022-11-21 16:16:29,998 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2022-11-21 16:16:30,001 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -7 predicate places. [2022-11-21 16:16:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 519 flow [2022-11-21 16:16:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:30,002 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:30,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:16:30,003 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:30,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:30,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1324667131, now seen corresponding path program 1 times [2022-11-21 16:16:30,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:30,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512568225] [2022-11-21 16:16:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:30,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512568225] [2022-11-21 16:16:30,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512568225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:30,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992823208] [2022-11-21 16:16:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:30,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:30,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:30,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:16:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:30,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:30,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:30,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:30,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992823208] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:30,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:16:30,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:16:30,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609310923] [2022-11-21 16:16:30,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:30,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:16:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:30,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:16:30,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:16:30,473 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:30,475 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 519 flow. Second operand has 12 states, 12 states have (on average 138.16666666666666) internal successors, (1658), 12 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:30,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:30,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:30,889 INFO L130 PetriNetUnfolder]: 85/1188 cut-off events. [2022-11-21 16:16:30,889 INFO L131 PetriNetUnfolder]: For 649/649 co-relation queries the response was YES. [2022-11-21 16:16:30,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 1188 events. 85/1188 cut-off events. For 649/649 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7003 event pairs, 0 based on Foata normal form. 1/1047 useless extension candidates. Maximal degree in co-relation 1743. Up to 237 conditions per place. [2022-11-21 16:16:30,896 INFO L137 encePairwiseOnDemand]: 179/191 looper letters, 64 selfloop transitions, 16 changer transitions 0/193 dead transitions. [2022-11-21 16:16:30,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 193 transitions, 768 flow [2022-11-21 16:16:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:16:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:16:30,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1429 transitions. [2022-11-21 16:16:30,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7481675392670157 [2022-11-21 16:16:30,900 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1429 transitions. [2022-11-21 16:16:30,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1429 transitions. [2022-11-21 16:16:30,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:30,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1429 transitions. [2022-11-21 16:16:30,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.9) internal successors, (1429), 10 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,910 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,910 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 519 flow. Second operand 10 states and 1429 transitions. [2022-11-21 16:16:30,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 193 transitions, 768 flow [2022-11-21 16:16:30,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 193 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:30,916 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 556 flow [2022-11-21 16:16:30,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=556, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2022-11-21 16:16:30,917 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 1 predicate places. [2022-11-21 16:16:30,918 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 556 flow [2022-11-21 16:16:30,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.16666666666666) internal successors, (1658), 12 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:30,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:30,919 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:30,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:31,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 16:16:31,125 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:31,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:31,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1884992421, now seen corresponding path program 1 times [2022-11-21 16:16:31,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:31,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016382262] [2022-11-21 16:16:31,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:31,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:31,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:31,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016382262] [2022-11-21 16:16:31,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016382262] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:31,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162716006] [2022-11-21 16:16:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:31,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:31,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:16:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:31,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:31,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:31,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:31,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:16:31,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162716006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:31,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:16:31,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:16:31,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058568860] [2022-11-21 16:16:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:31,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:16:31,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:31,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:16:31,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:16:31,484 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:31,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 556 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:31,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:31,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:31,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:31,850 INFO L130 PetriNetUnfolder]: 85/1187 cut-off events. [2022-11-21 16:16:31,851 INFO L131 PetriNetUnfolder]: For 918/918 co-relation queries the response was YES. [2022-11-21 16:16:31,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2150 conditions, 1187 events. 85/1187 cut-off events. For 918/918 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6938 event pairs, 0 based on Foata normal form. 1/1046 useless extension candidates. Maximal degree in co-relation 1795. Up to 237 conditions per place. [2022-11-21 16:16:31,858 INFO L137 encePairwiseOnDemand]: 180/191 looper letters, 62 selfloop transitions, 14 changer transitions 0/189 dead transitions. [2022-11-21 16:16:31,858 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 189 transitions, 776 flow [2022-11-21 16:16:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:16:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:16:31,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1019 transitions. [2022-11-21 16:16:31,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621540762902019 [2022-11-21 16:16:31,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1019 transitions. [2022-11-21 16:16:31,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1019 transitions. [2022-11-21 16:16:31,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:31,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1019 transitions. [2022-11-21 16:16:31,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.57142857142858) internal successors, (1019), 7 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:31,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:31,871 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:31,871 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 556 flow. Second operand 7 states and 1019 transitions. [2022-11-21 16:16:31,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 189 transitions, 776 flow [2022-11-21 16:16:31,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 189 transitions, 738 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-21 16:16:31,878 INFO L231 Difference]: Finished difference. Result has 178 places, 166 transitions, 540 flow [2022-11-21 16:16:31,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=178, PETRI_TRANSITIONS=166} [2022-11-21 16:16:31,880 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, -2 predicate places. [2022-11-21 16:16:31,880 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 166 transitions, 540 flow [2022-11-21 16:16:31,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:31,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:31,881 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:16:31,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-21 16:16:32,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:32,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:32,089 INFO L85 PathProgramCache]: Analyzing trace with hash 2106749991, now seen corresponding path program 1 times [2022-11-21 16:16:32,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:32,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379809819] [2022-11-21 16:16:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:32,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:32,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:32,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379809819] [2022-11-21 16:16:32,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379809819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:32,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243884309] [2022-11-21 16:16:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:32,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:32,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:32,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:32,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:16:32,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:32,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-21 16:16:32,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:33,092 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:16:33,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:16:33,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:16:33,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:16:33,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:16:33,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:33,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:33,755 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_96 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_96) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:16:34,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:16:34,329 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:16:34,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:16:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-11-21 16:16:34,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243884309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:34,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:16:34,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-11-21 16:16:34,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728437854] [2022-11-21 16:16:34,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:34,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 16:16:34,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 16:16:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=799, Unknown=7, NotChecked=58, Total=992 [2022-11-21 16:16:34,343 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 191 [2022-11-21 16:16:34,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 166 transitions, 540 flow. Second operand has 32 states, 32 states have (on average 107.5) internal successors, (3440), 32 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:34,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:34,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 191 [2022-11-21 16:16:34,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:48,435 INFO L130 PetriNetUnfolder]: 92/1400 cut-off events. [2022-11-21 16:16:48,435 INFO L131 PetriNetUnfolder]: For 1037/1037 co-relation queries the response was YES. [2022-11-21 16:16:48,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 1400 events. 92/1400 cut-off events. For 1037/1037 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 8983 event pairs, 22 based on Foata normal form. 1/1236 useless extension candidates. Maximal degree in co-relation 1931. Up to 524 conditions per place. [2022-11-21 16:16:48,443 INFO L137 encePairwiseOnDemand]: 171/191 looper letters, 119 selfloop transitions, 26 changer transitions 2/230 dead transitions. [2022-11-21 16:16:48,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 230 transitions, 1082 flow [2022-11-21 16:16:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:16:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:16:48,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1904 transitions. [2022-11-21 16:16:48,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5863874345549738 [2022-11-21 16:16:48,451 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1904 transitions. [2022-11-21 16:16:48,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1904 transitions. [2022-11-21 16:16:48,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:48,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1904 transitions. [2022-11-21 16:16:48,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 112.0) internal successors, (1904), 17 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:48,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:48,467 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:48,467 INFO L175 Difference]: Start difference. First operand has 178 places, 166 transitions, 540 flow. Second operand 17 states and 1904 transitions. [2022-11-21 16:16:48,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 230 transitions, 1082 flow [2022-11-21 16:16:48,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 230 transitions, 1034 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:16:48,476 INFO L231 Difference]: Finished difference. Result has 200 places, 186 transitions, 741 flow [2022-11-21 16:16:48,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=741, PETRI_PLACES=200, PETRI_TRANSITIONS=186} [2022-11-21 16:16:48,478 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 20 predicate places. [2022-11-21 16:16:48,478 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 186 transitions, 741 flow [2022-11-21 16:16:48,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 107.5) internal successors, (3440), 32 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:48,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:48,480 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:48,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:48,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:48,686 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash 505852185, now seen corresponding path program 1 times [2022-11-21 16:16:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:48,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161835933] [2022-11-21 16:16:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:48,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:48,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:16:48,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:48,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161835933] [2022-11-21 16:16:48,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161835933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:48,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:48,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:48,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765128254] [2022-11-21 16:16:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:48,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:48,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:48,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:48,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:48,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 186 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:48,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:48,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:49,175 INFO L130 PetriNetUnfolder]: 92/1377 cut-off events. [2022-11-21 16:16:49,175 INFO L131 PetriNetUnfolder]: For 1067/1067 co-relation queries the response was YES. [2022-11-21 16:16:49,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2687 conditions, 1377 events. 92/1377 cut-off events. For 1067/1067 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 8714 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 1996. Up to 344 conditions per place. [2022-11-21 16:16:49,184 INFO L137 encePairwiseOnDemand]: 179/191 looper letters, 73 selfloop transitions, 18 changer transitions 0/210 dead transitions. [2022-11-21 16:16:49,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 210 transitions, 1007 flow [2022-11-21 16:16:49,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-21 16:16:49,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.787434554973822 [2022-11-21 16:16:49,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-21 16:16:49,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-21 16:16:49,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:49,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-21 16:16:49,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:49,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:49,194 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:49,194 INFO L175 Difference]: Start difference. First operand has 200 places, 186 transitions, 741 flow. Second operand 5 states and 752 transitions. [2022-11-21 16:16:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 210 transitions, 1007 flow [2022-11-21 16:16:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 210 transitions, 992 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-21 16:16:49,203 INFO L231 Difference]: Finished difference. Result has 205 places, 188 transitions, 795 flow [2022-11-21 16:16:49,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=205, PETRI_TRANSITIONS=188} [2022-11-21 16:16:49,204 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 25 predicate places. [2022-11-21 16:16:49,204 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 188 transitions, 795 flow [2022-11-21 16:16:49,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:49,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:49,205 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:49,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:16:49,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash -725022339, now seen corresponding path program 1 times [2022-11-21 16:16:49,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:49,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490748386] [2022-11-21 16:16:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:49,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:49,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490748386] [2022-11-21 16:16:49,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490748386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:49,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136648283] [2022-11-21 16:16:49,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:49,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:49,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:49,353 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:49,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:16:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:49,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:49,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:49,562 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:49,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:49,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136648283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:49,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:16:49,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:16:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552616061] [2022-11-21 16:16:49,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:49,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:16:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:16:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:16:49,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:49,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 188 transitions, 795 flow. Second operand has 12 states, 12 states have (on average 138.33333333333334) internal successors, (1660), 12 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:49,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:49,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:49,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:50,170 INFO L130 PetriNetUnfolder]: 92/1374 cut-off events. [2022-11-21 16:16:50,171 INFO L131 PetriNetUnfolder]: For 1885/1885 co-relation queries the response was YES. [2022-11-21 16:16:50,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 1374 events. 92/1374 cut-off events. For 1885/1885 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 8735 event pairs, 0 based on Foata normal form. 3/1270 useless extension candidates. Maximal degree in co-relation 2088. Up to 254 conditions per place. [2022-11-21 16:16:50,180 INFO L137 encePairwiseOnDemand]: 179/191 looper letters, 71 selfloop transitions, 23 changer transitions 0/213 dead transitions. [2022-11-21 16:16:50,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 213 transitions, 1079 flow [2022-11-21 16:16:50,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:16:50,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:16:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1429 transitions. [2022-11-21 16:16:50,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7481675392670157 [2022-11-21 16:16:50,184 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1429 transitions. [2022-11-21 16:16:50,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1429 transitions. [2022-11-21 16:16:50,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:50,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1429 transitions. [2022-11-21 16:16:50,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 142.9) internal successors, (1429), 10 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:50,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:50,194 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:50,195 INFO L175 Difference]: Start difference. First operand has 205 places, 188 transitions, 795 flow. Second operand 10 states and 1429 transitions. [2022-11-21 16:16:50,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 213 transitions, 1079 flow [2022-11-21 16:16:50,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 1079 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:50,206 INFO L231 Difference]: Finished difference. Result has 213 places, 188 transitions, 849 flow [2022-11-21 16:16:50,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=849, PETRI_PLACES=213, PETRI_TRANSITIONS=188} [2022-11-21 16:16:50,208 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 33 predicate places. [2022-11-21 16:16:50,208 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 188 transitions, 849 flow [2022-11-21 16:16:50,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 138.33333333333334) internal successors, (1660), 12 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:50,209 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:50,210 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:50,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:50,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:50,415 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:50,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1000855429, now seen corresponding path program 1 times [2022-11-21 16:16:50,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:50,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499435776] [2022-11-21 16:16:50,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:50,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:50,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499435776] [2022-11-21 16:16:50,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499435776] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576188056] [2022-11-21 16:16:50,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:50,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:50,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:50,556 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:50,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:16:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:50,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:50,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:50,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:16:50,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576188056] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:50,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:16:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:16:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915623320] [2022-11-21 16:16:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:16:50,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:16:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:16:50,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:50,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 188 transitions, 849 flow. Second operand has 6 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:50,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:50,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:50,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:51,194 INFO L130 PetriNetUnfolder]: 92/1371 cut-off events. [2022-11-21 16:16:51,194 INFO L131 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2022-11-21 16:16:51,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2890 conditions, 1371 events. 92/1371 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 8704 event pairs, 0 based on Foata normal form. 3/1267 useless extension candidates. Maximal degree in co-relation 2146. Up to 254 conditions per place. [2022-11-21 16:16:51,204 INFO L137 encePairwiseOnDemand]: 180/191 looper letters, 69 selfloop transitions, 21 changer transitions 0/209 dead transitions. [2022-11-21 16:16:51,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 209 transitions, 1103 flow [2022-11-21 16:16:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:16:51,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:16:51,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1019 transitions. [2022-11-21 16:16:51,207 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621540762902019 [2022-11-21 16:16:51,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1019 transitions. [2022-11-21 16:16:51,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1019 transitions. [2022-11-21 16:16:51,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:51,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1019 transitions. [2022-11-21 16:16:51,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.57142857142858) internal successors, (1019), 7 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,214 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,214 INFO L175 Difference]: Start difference. First operand has 213 places, 188 transitions, 849 flow. Second operand 7 states and 1019 transitions. [2022-11-21 16:16:51,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 209 transitions, 1103 flow [2022-11-21 16:16:51,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 209 transitions, 1034 flow, removed 3 selfloop flow, removed 8 redundant places. [2022-11-21 16:16:51,225 INFO L231 Difference]: Finished difference. Result has 209 places, 187 transitions, 816 flow [2022-11-21 16:16:51,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=816, PETRI_PLACES=209, PETRI_TRANSITIONS=187} [2022-11-21 16:16:51,226 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 29 predicate places. [2022-11-21 16:16:51,226 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 187 transitions, 816 flow [2022-11-21 16:16:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.16666666666666) internal successors, (829), 6 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:51,243 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:51,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:51,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:51,455 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:51,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:51,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1697197093, now seen corresponding path program 1 times [2022-11-21 16:16:51,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:51,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708306449] [2022-11-21 16:16:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:16:51,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708306449] [2022-11-21 16:16:51,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708306449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:51,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:51,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057612472] [2022-11-21 16:16:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:51,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:51,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 191 [2022-11-21 16:16:51,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 187 transitions, 816 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:51,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 191 [2022-11-21 16:16:51,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:51,905 INFO L130 PetriNetUnfolder]: 92/1347 cut-off events. [2022-11-21 16:16:51,905 INFO L131 PetriNetUnfolder]: For 2030/2030 co-relation queries the response was YES. [2022-11-21 16:16:51,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 1347 events. 92/1347 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 8395 event pairs, 0 based on Foata normal form. 0/1276 useless extension candidates. Maximal degree in co-relation 2179. Up to 344 conditions per place. [2022-11-21 16:16:51,914 INFO L137 encePairwiseOnDemand]: 179/191 looper letters, 73 selfloop transitions, 18 changer transitions 1/210 dead transitions. [2022-11-21 16:16:51,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 210 transitions, 1082 flow [2022-11-21 16:16:51,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:51,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:51,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-21 16:16:51,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.787434554973822 [2022-11-21 16:16:51,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-21 16:16:51,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-21 16:16:51,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:51,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-21 16:16:51,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,922 INFO L175 Difference]: Start difference. First operand has 209 places, 187 transitions, 816 flow. Second operand 5 states and 752 transitions. [2022-11-21 16:16:51,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 210 transitions, 1082 flow [2022-11-21 16:16:51,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 1040 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:16:51,932 INFO L231 Difference]: Finished difference. Result has 210 places, 188 transitions, 828 flow [2022-11-21 16:16:51,933 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=828, PETRI_PLACES=210, PETRI_TRANSITIONS=188} [2022-11-21 16:16:51,934 INFO L288 CegarLoopForPetriNet]: 180 programPoint places, 30 predicate places. [2022-11-21 16:16:51,934 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 188 transitions, 828 flow [2022-11-21 16:16:51,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:51,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:51,935 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-21 16:16:51,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 16:16:51,935 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1015120428, now seen corresponding path program 1 times [2022-11-21 16:16:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:51,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295639152] [2022-11-21 16:16:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:51,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:16:51,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:16:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:16:52,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:16:52,015 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:16:52,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:16:52,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:16:52,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:16:52,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:16:52,016 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:16:52,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:16:52,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:16:52,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:16:52,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:16:52,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:16:52,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 16:16:52,018 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:16:52,019 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:16:52,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-21 16:16:52,053 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-11-21 16:16:52,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 498 flow [2022-11-21 16:16:52,610 INFO L130 PetriNetUnfolder]: 639/4239 cut-off events. [2022-11-21 16:16:52,610 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-11-21 16:16:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4690 conditions, 4239 events. 639/4239 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 31695 event pairs, 64 based on Foata normal form. 0/3506 useless extension candidates. Maximal degree in co-relation 2435. Up to 192 conditions per place. [2022-11-21 16:16:52,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 498 flow [2022-11-21 16:16:52,653 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 210 transitions, 498 flow [2022-11-21 16:16:52,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:16:52,655 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;@7da61fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:16:52,655 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:16:52,663 INFO L130 PetriNetUnfolder]: 8/121 cut-off events. [2022-11-21 16:16:52,663 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:16:52,663 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:52,664 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] [2022-11-21 16:16:52,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:52,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1836426856, now seen corresponding path program 1 times [2022-11-21 16:16:52,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:52,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156385720] [2022-11-21 16:16:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:52,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:52,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:52,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:52,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156385720] [2022-11-21 16:16:52,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156385720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:52,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712240502] [2022-11-21 16:16:52,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:52,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:52,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:52,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:52,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:16:52,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 210 transitions, 498 flow. Second operand has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:52,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:52,729 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:16:52,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:53,905 INFO L130 PetriNetUnfolder]: 502/6218 cut-off events. [2022-11-21 16:16:53,906 INFO L131 PetriNetUnfolder]: For 647/647 co-relation queries the response was YES. [2022-11-21 16:16:53,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8780 conditions, 6218 events. 502/6218 cut-off events. For 647/647 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 59469 event pairs, 8 based on Foata normal form. 2442/7729 useless extension candidates. Maximal degree in co-relation 4452. Up to 1173 conditions per place. [2022-11-21 16:16:53,939 INFO L137 encePairwiseOnDemand]: 186/210 looper letters, 75 selfloop transitions, 10 changer transitions 27/233 dead transitions. [2022-11-21 16:16:53,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 233 transitions, 754 flow [2022-11-21 16:16:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:53,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2022-11-21 16:16:53,942 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8019047619047619 [2022-11-21 16:16:53,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2022-11-21 16:16:53,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2022-11-21 16:16:53,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:53,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2022-11-21 16:16:53,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,948 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,949 INFO L175 Difference]: Start difference. First operand has 198 places, 210 transitions, 498 flow. Second operand 5 states and 842 transitions. [2022-11-21 16:16:53,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 233 transitions, 754 flow [2022-11-21 16:16:53,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:53,954 INFO L231 Difference]: Finished difference. Result has 203 places, 178 transitions, 496 flow [2022-11-21 16:16:53,954 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=203, PETRI_TRANSITIONS=178} [2022-11-21 16:16:53,956 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 5 predicate places. [2022-11-21 16:16:53,956 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 178 transitions, 496 flow [2022-11-21 16:16:53,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:53,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:53,957 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] [2022-11-21 16:16:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:16:53,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:53,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1174501436, now seen corresponding path program 1 times [2022-11-21 16:16:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:53,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013760612] [2022-11-21 16:16:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:54,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:54,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013760612] [2022-11-21 16:16:54,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013760612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:54,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:54,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:16:54,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328833472] [2022-11-21 16:16:54,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:54,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:16:54,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:54,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:16:54,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:16:54,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 210 [2022-11-21 16:16:54,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 178 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:54,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:54,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 210 [2022-11-21 16:16:54,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:54,988 INFO L130 PetriNetUnfolder]: 502/4249 cut-off events. [2022-11-21 16:16:54,989 INFO L131 PetriNetUnfolder]: For 1351/1351 co-relation queries the response was YES. [2022-11-21 16:16:55,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7456 conditions, 4249 events. 502/4249 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35317 event pairs, 122 based on Foata normal form. 0/3681 useless extension candidates. Maximal degree in co-relation 3827. Up to 1983 conditions per place. [2022-11-21 16:16:55,014 INFO L137 encePairwiseOnDemand]: 203/210 looper letters, 67 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2022-11-21 16:16:55,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 660 flow [2022-11-21 16:16:55,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:55,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-11-21 16:16:55,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7104761904761905 [2022-11-21 16:16:55,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-11-21 16:16:55,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-11-21 16:16:55,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:55,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-11-21 16:16:55,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:55,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:55,023 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:55,023 INFO L175 Difference]: Start difference. First operand has 203 places, 178 transitions, 496 flow. Second operand 5 states and 746 transitions. [2022-11-21 16:16:55,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 660 flow [2022-11-21 16:16:55,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 185 transitions, 660 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:55,028 INFO L231 Difference]: Finished difference. Result has 184 places, 182 transitions, 539 flow [2022-11-21 16:16:55,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=539, PETRI_PLACES=184, PETRI_TRANSITIONS=182} [2022-11-21 16:16:55,030 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, -14 predicate places. [2022-11-21 16:16:55,030 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 182 transitions, 539 flow [2022-11-21 16:16:55,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.8) internal successors, (699), 5 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:55,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:55,031 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] [2022-11-21 16:16:55,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:16:55,032 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:55,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:55,032 INFO L85 PathProgramCache]: Analyzing trace with hash -314787719, now seen corresponding path program 1 times [2022-11-21 16:16:55,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:55,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488543386] [2022-11-21 16:16:55,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:55,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:55,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:55,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:55,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488543386] [2022-11-21 16:16:55,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488543386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:55,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:55,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:55,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720231563] [2022-11-21 16:16:55,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:55,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:55,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:55,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:55,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:55,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:16:55,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 182 transitions, 539 flow. Second operand has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:55,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:55,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:16:55,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:56,124 INFO L130 PetriNetUnfolder]: 502/4241 cut-off events. [2022-11-21 16:16:56,124 INFO L131 PetriNetUnfolder]: For 1363/1363 co-relation queries the response was YES. [2022-11-21 16:16:56,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 4241 events. 502/4241 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35177 event pairs, 8 based on Foata normal form. 0/3685 useless extension candidates. Maximal degree in co-relation 6652. Up to 1140 conditions per place. [2022-11-21 16:16:56,148 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 76 selfloop transitions, 11 changer transitions 0/211 dead transitions. [2022-11-21 16:16:56,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 211 transitions, 811 flow [2022-11-21 16:16:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:16:56,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:16:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2022-11-21 16:16:56,152 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7780952380952381 [2022-11-21 16:16:56,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2022-11-21 16:16:56,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2022-11-21 16:16:56,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:56,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2022-11-21 16:16:56,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:56,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:56,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:56,159 INFO L175 Difference]: Start difference. First operand has 184 places, 182 transitions, 539 flow. Second operand 5 states and 817 transitions. [2022-11-21 16:16:56,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 211 transitions, 811 flow [2022-11-21 16:16:56,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 211 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:16:56,165 INFO L231 Difference]: Finished difference. Result has 190 places, 184 transitions, 583 flow [2022-11-21 16:16:56,166 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=190, PETRI_TRANSITIONS=184} [2022-11-21 16:16:56,166 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, -8 predicate places. [2022-11-21 16:16:56,166 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 184 transitions, 583 flow [2022-11-21 16:16:56,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:56,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:56,167 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:56,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:16:56,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:56,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:56,168 INFO L85 PathProgramCache]: Analyzing trace with hash 259270689, now seen corresponding path program 1 times [2022-11-21 16:16:56,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:56,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189323644] [2022-11-21 16:16:56,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:56,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:56,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189323644] [2022-11-21 16:16:56,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189323644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:56,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962310766] [2022-11-21 16:16:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:56,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:56,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:56,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:56,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:16:56,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:56,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:56,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:56,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:16:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:56,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962310766] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:16:56,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:16:56,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:16:56,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540949719] [2022-11-21 16:16:56,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:16:56,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:16:56,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:16:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:16:56,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:16:56,576 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 184 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 149.16666666666666) internal successors, (1790), 12 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:56,576 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:56,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:16:56,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:57,720 INFO L130 PetriNetUnfolder]: 502/4239 cut-off events. [2022-11-21 16:16:57,720 INFO L131 PetriNetUnfolder]: For 2296/2296 co-relation queries the response was YES. [2022-11-21 16:16:57,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7583 conditions, 4239 events. 502/4239 cut-off events. For 2296/2296 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35219 event pairs, 8 based on Foata normal form. 2/3701 useless extension candidates. Maximal degree in co-relation 6924. Up to 1084 conditions per place. [2022-11-21 16:16:57,747 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 79 selfloop transitions, 21 changer transitions 0/224 dead transitions. [2022-11-21 16:16:57,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 224 transitions, 931 flow [2022-11-21 16:16:57,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:16:57,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:16:57,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2144 transitions. [2022-11-21 16:16:57,753 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7292517006802721 [2022-11-21 16:16:57,753 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2144 transitions. [2022-11-21 16:16:57,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2144 transitions. [2022-11-21 16:16:57,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:57,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2144 transitions. [2022-11-21 16:16:57,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 153.14285714285714) internal successors, (2144), 14 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:57,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:57,765 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:57,765 INFO L175 Difference]: Start difference. First operand has 190 places, 184 transitions, 583 flow. Second operand 14 states and 2144 transitions. [2022-11-21 16:16:57,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 224 transitions, 931 flow [2022-11-21 16:16:57,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 224 transitions, 931 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:16:57,773 INFO L231 Difference]: Finished difference. Result has 202 places, 189 transitions, 655 flow [2022-11-21 16:16:57,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=655, PETRI_PLACES=202, PETRI_TRANSITIONS=189} [2022-11-21 16:16:57,774 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 4 predicate places. [2022-11-21 16:16:57,775 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 189 transitions, 655 flow [2022-11-21 16:16:57,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.16666666666666) internal successors, (1790), 12 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:57,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:57,776 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:57,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:57,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 16:16:57,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash -552542503, now seen corresponding path program 1 times [2022-11-21 16:16:57,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:57,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155430037] [2022-11-21 16:16:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:57,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:58,087 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:58,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:58,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155430037] [2022-11-21 16:16:58,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155430037] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:16:58,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406591943] [2022-11-21 16:16:58,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:58,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:58,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:16:58,089 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:16:58,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:16:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:58,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:16:58,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:16:58,274 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:16:58,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:16:58,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406591943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:58,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:16:58,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:16:58,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434072198] [2022-11-21 16:16:58,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:58,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:16:58,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:58,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:16:58,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:16:58,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:16:58,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 189 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:58,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:58,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:16:58,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:16:59,297 INFO L130 PetriNetUnfolder]: 502/4237 cut-off events. [2022-11-21 16:16:59,297 INFO L131 PetriNetUnfolder]: For 3141/3141 co-relation queries the response was YES. [2022-11-21 16:16:59,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 4237 events. 502/4237 cut-off events. For 3141/3141 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 35212 event pairs, 8 based on Foata normal form. 2/3699 useless extension candidates. Maximal degree in co-relation 7096. Up to 1084 conditions per place. [2022-11-21 16:16:59,327 INFO L137 encePairwiseOnDemand]: 199/210 looper letters, 73 selfloop transitions, 17 changer transitions 0/214 dead transitions. [2022-11-21 16:16:59,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 214 transitions, 917 flow [2022-11-21 16:16:59,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:16:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:16:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1106 transitions. [2022-11-21 16:16:59,330 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2022-11-21 16:16:59,330 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1106 transitions. [2022-11-21 16:16:59,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1106 transitions. [2022-11-21 16:16:59,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:16:59,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1106 transitions. [2022-11-21 16:16:59,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:59,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:59,340 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:59,340 INFO L175 Difference]: Start difference. First operand has 202 places, 189 transitions, 655 flow. Second operand 7 states and 1106 transitions. [2022-11-21 16:16:59,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 214 transitions, 917 flow [2022-11-21 16:16:59,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 214 transitions, 869 flow, removed 6 selfloop flow, removed 7 redundant places. [2022-11-21 16:16:59,349 INFO L231 Difference]: Finished difference. Result has 198 places, 187 transitions, 629 flow [2022-11-21 16:16:59,349 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=629, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-11-21 16:16:59,350 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 0 predicate places. [2022-11-21 16:16:59,350 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 629 flow [2022-11-21 16:16:59,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:59,350 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:16:59,351 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:16:59,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:16:59,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:16:59,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:16:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:16:59,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1796086159, now seen corresponding path program 1 times [2022-11-21 16:16:59,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:16:59,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054789925] [2022-11-21 16:16:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:16:59,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:16:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:16:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:16:59,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:16:59,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054789925] [2022-11-21 16:16:59,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054789925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:16:59,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:16:59,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:16:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229665275] [2022-11-21 16:16:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:16:59,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:16:59,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:16:59,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:16:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:16:59,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:16:59,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 629 flow. Second operand has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:16:59,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:16:59,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:16:59,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:00,693 INFO L130 PetriNetUnfolder]: 502/4192 cut-off events. [2022-11-21 16:17:00,693 INFO L131 PetriNetUnfolder]: For 2923/2923 co-relation queries the response was YES. [2022-11-21 16:17:00,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8112 conditions, 4192 events. 502/4192 cut-off events. For 2923/2923 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34672 event pairs, 8 based on Foata normal form. 0/3730 useless extension candidates. Maximal degree in co-relation 7429. Up to 1385 conditions per place. [2022-11-21 16:17:00,727 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 78 selfloop transitions, 13 changer transitions 0/215 dead transitions. [2022-11-21 16:17:00,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 215 transitions, 907 flow [2022-11-21 16:17:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:00,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:00,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2022-11-21 16:17:00,729 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7780952380952381 [2022-11-21 16:17:00,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2022-11-21 16:17:00,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2022-11-21 16:17:00,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:00,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2022-11-21 16:17:00,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:00,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:00,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:00,735 INFO L175 Difference]: Start difference. First operand has 198 places, 187 transitions, 629 flow. Second operand 5 states and 817 transitions. [2022-11-21 16:17:00,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 215 transitions, 907 flow [2022-11-21 16:17:00,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 215 transitions, 873 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:17:00,743 INFO L231 Difference]: Finished difference. Result has 199 places, 189 transitions, 648 flow [2022-11-21 16:17:00,743 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=648, PETRI_PLACES=199, PETRI_TRANSITIONS=189} [2022-11-21 16:17:00,744 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 1 predicate places. [2022-11-21 16:17:00,744 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 189 transitions, 648 flow [2022-11-21 16:17:00,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.25) internal successors, (601), 4 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:00,745 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:00,745 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:00,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:17:00,746 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:00,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:00,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1593313049, now seen corresponding path program 1 times [2022-11-21 16:17:00,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:00,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832349643] [2022-11-21 16:17:00,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:00,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:00,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:00,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:00,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832349643] [2022-11-21 16:17:00,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832349643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:00,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811562510] [2022-11-21 16:17:00,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:00,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:00,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:00,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:17:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:00,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:00,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:01,055 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:01,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:01,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811562510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:01,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:01,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:17:01,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49906858] [2022-11-21 16:17:01,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:01,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:17:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:01,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:17:01,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:17:01,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:17:01,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 189 transitions, 648 flow. Second operand has 12 states, 12 states have (on average 149.33333333333334) internal successors, (1792), 12 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:01,157 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:01,157 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:17:01,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:02,152 INFO L130 PetriNetUnfolder]: 502/4184 cut-off events. [2022-11-21 16:17:02,152 INFO L131 PetriNetUnfolder]: For 3954/3954 co-relation queries the response was YES. [2022-11-21 16:17:02,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8226 conditions, 4184 events. 502/4184 cut-off events. For 3954/3954 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 34626 event pairs, 8 based on Foata normal form. 8/3844 useless extension candidates. Maximal degree in co-relation 7523. Up to 1036 conditions per place. [2022-11-21 16:17:02,183 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 81 selfloop transitions, 23 changer transitions 0/228 dead transitions. [2022-11-21 16:17:02,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 228 transitions, 1000 flow [2022-11-21 16:17:02,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:17:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 16:17:02,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2144 transitions. [2022-11-21 16:17:02,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7292517006802721 [2022-11-21 16:17:02,188 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2144 transitions. [2022-11-21 16:17:02,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2144 transitions. [2022-11-21 16:17:02,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:02,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2144 transitions. [2022-11-21 16:17:02,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 153.14285714285714) internal successors, (2144), 14 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:02,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:02,199 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 210.0) internal successors, (3150), 15 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:02,199 INFO L175 Difference]: Start difference. First operand has 199 places, 189 transitions, 648 flow. Second operand 14 states and 2144 transitions. [2022-11-21 16:17:02,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 228 transitions, 1000 flow [2022-11-21 16:17:02,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 228 transitions, 1000 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:02,211 INFO L231 Difference]: Finished difference. Result has 211 places, 194 transitions, 730 flow [2022-11-21 16:17:02,212 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=730, PETRI_PLACES=211, PETRI_TRANSITIONS=194} [2022-11-21 16:17:02,212 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 13 predicate places. [2022-11-21 16:17:02,212 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 194 transitions, 730 flow [2022-11-21 16:17:02,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 149.33333333333334) internal successors, (1792), 12 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:02,213 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:02,214 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:02,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:02,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-21 16:17:02,420 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:02,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash 2146903841, now seen corresponding path program 1 times [2022-11-21 16:17:02,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:02,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125459719] [2022-11-21 16:17:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:02,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:02,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125459719] [2022-11-21 16:17:02,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125459719] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:02,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529887228] [2022-11-21 16:17:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:02,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:02,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:02,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:02,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:17:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:02,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:02,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:02,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:17:02,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529887228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:02,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:17:02,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:17:02,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698345064] [2022-11-21 16:17:02,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:02,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:17:02,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:02,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:17:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:17:02,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:17:02,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 194 transitions, 730 flow. Second operand has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:02,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:02,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:17:02,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:03,617 INFO L130 PetriNetUnfolder]: 502/4176 cut-off events. [2022-11-21 16:17:03,617 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2022-11-21 16:17:03,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8422 conditions, 4176 events. 502/4176 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 34605 event pairs, 8 based on Foata normal form. 8/3836 useless extension candidates. Maximal degree in co-relation 7699. Up to 1036 conditions per place. [2022-11-21 16:17:03,641 INFO L137 encePairwiseOnDemand]: 199/210 looper letters, 75 selfloop transitions, 19 changer transitions 0/218 dead transitions. [2022-11-21 16:17:03,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 218 transitions, 998 flow [2022-11-21 16:17:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:17:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:17:03,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1106 transitions. [2022-11-21 16:17:03,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2022-11-21 16:17:03,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1106 transitions. [2022-11-21 16:17:03,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1106 transitions. [2022-11-21 16:17:03,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:03,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1106 transitions. [2022-11-21 16:17:03,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 158.0) internal successors, (1106), 7 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:03,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:03,650 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:03,650 INFO L175 Difference]: Start difference. First operand has 211 places, 194 transitions, 730 flow. Second operand 7 states and 1106 transitions. [2022-11-21 16:17:03,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 218 transitions, 998 flow [2022-11-21 16:17:03,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 218 transitions, 933 flow, removed 6 selfloop flow, removed 8 redundant places. [2022-11-21 16:17:03,663 INFO L231 Difference]: Finished difference. Result has 206 places, 192 transitions, 691 flow [2022-11-21 16:17:03,663 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=691, PETRI_PLACES=206, PETRI_TRANSITIONS=192} [2022-11-21 16:17:03,664 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 8 predicate places. [2022-11-21 16:17:03,664 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 192 transitions, 691 flow [2022-11-21 16:17:03,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 149.16666666666666) internal successors, (895), 6 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:03,664 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:03,665 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:03,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:03,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-21 16:17:03,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:03,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:03,871 INFO L85 PathProgramCache]: Analyzing trace with hash 143726279, now seen corresponding path program 1 times [2022-11-21 16:17:03,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:03,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881161016] [2022-11-21 16:17:03,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:03,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:03,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:17:03,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:03,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881161016] [2022-11-21 16:17:03,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881161016] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:03,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:03,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:03,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107327080] [2022-11-21 16:17:03,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:03,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:17:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:03,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:17:03,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:17:03,940 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 210 [2022-11-21 16:17:03,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 192 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:03,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:03,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 210 [2022-11-21 16:17:03,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:04,671 INFO L130 PetriNetUnfolder]: 502/4107 cut-off events. [2022-11-21 16:17:04,671 INFO L131 PetriNetUnfolder]: For 4179/4179 co-relation queries the response was YES. [2022-11-21 16:17:04,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 4107 events. 502/4107 cut-off events. For 4179/4179 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 33630 event pairs, 8 based on Foata normal form. 0/3885 useless extension candidates. Maximal degree in co-relation 7947. Up to 1385 conditions per place. [2022-11-21 16:17:04,690 INFO L137 encePairwiseOnDemand]: 198/210 looper letters, 80 selfloop transitions, 15 changer transitions 0/219 dead transitions. [2022-11-21 16:17:04,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 219 transitions, 975 flow [2022-11-21 16:17:04,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:04,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2022-11-21 16:17:04,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7780952380952381 [2022-11-21 16:17:04,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2022-11-21 16:17:04,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2022-11-21 16:17:04,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:04,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2022-11-21 16:17:04,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:04,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:04,696 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:04,696 INFO L175 Difference]: Start difference. First operand has 206 places, 192 transitions, 691 flow. Second operand 5 states and 817 transitions. [2022-11-21 16:17:04,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 219 transitions, 975 flow [2022-11-21 16:17:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 219 transitions, 937 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:17:04,709 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 712 flow [2022-11-21 16:17:04,709 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=712, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-21 16:17:04,710 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 9 predicate places. [2022-11-21 16:17:04,710 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 712 flow [2022-11-21 16:17:04,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:04,710 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:04,711 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:04,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 16:17:04,711 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:04,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1830510491, now seen corresponding path program 1 times [2022-11-21 16:17:04,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:04,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460819127] [2022-11-21 16:17:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:05,301 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:17:05,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:05,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460819127] [2022-11-21 16:17:05,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460819127] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:05,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94453842] [2022-11-21 16:17:05,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:05,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:05,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:05,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:05,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 16:17:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:05,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 16:17:05,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:05,619 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:17:05,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:17:05,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:17:06,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:17:06,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:17:06,422 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:17:06,451 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 43 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:06,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:06,590 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_311 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_311) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:17:06,808 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_311 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_311) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ |c_ULTIMATE.start_main_~i~0#1| 4))) is different from false [2022-11-21 16:17:06,870 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_311 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_311) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) 4)) is different from false [2022-11-21 16:17:07,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:17:07,118 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:17:07,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:17:07,123 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 36 not checked. [2022-11-21 16:17:07,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94453842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:07,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:07,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15, 15] total 35 [2022-11-21 16:17:07,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121696481] [2022-11-21 16:17:07,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:07,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-21 16:17:07,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-21 16:17:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=862, Unknown=6, NotChecked=186, Total=1190 [2022-11-21 16:17:07,133 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 210 [2022-11-21 16:17:07,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 712 flow. Second operand has 35 states, 35 states have (on average 119.0) internal successors, (4165), 35 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:07,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:07,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 210 [2022-11-21 16:17:07,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:23,592 INFO L130 PetriNetUnfolder]: 509/4310 cut-off events. [2022-11-21 16:17:23,592 INFO L131 PetriNetUnfolder]: For 5965/5965 co-relation queries the response was YES. [2022-11-21 16:17:23,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 4310 events. 509/4310 cut-off events. For 5965/5965 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 34999 event pairs, 122 based on Foata normal form. 1/4196 useless extension candidates. Maximal degree in co-relation 6636. Up to 1988 conditions per place. [2022-11-21 16:17:23,618 INFO L137 encePairwiseOnDemand]: 191/210 looper letters, 136 selfloop transitions, 24 changer transitions 4/259 dead transitions. [2022-11-21 16:17:23,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 259 transitions, 1314 flow [2022-11-21 16:17:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:17:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:17:23,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2099 transitions. [2022-11-21 16:17:23,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5879551820728292 [2022-11-21 16:17:23,623 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2099 transitions. [2022-11-21 16:17:23,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2099 transitions. [2022-11-21 16:17:23,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:23,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2099 transitions. [2022-11-21 16:17:23,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 123.47058823529412) internal successors, (2099), 17 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:23,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:23,635 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:23,635 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 712 flow. Second operand 17 states and 2099 transitions. [2022-11-21 16:17:23,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 259 transitions, 1314 flow [2022-11-21 16:17:23,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 259 transitions, 1314 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:23,651 INFO L231 Difference]: Finished difference. Result has 234 places, 212 transitions, 941 flow [2022-11-21 16:17:23,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=941, PETRI_PLACES=234, PETRI_TRANSITIONS=212} [2022-11-21 16:17:23,652 INFO L288 CegarLoopForPetriNet]: 198 programPoint places, 36 predicate places. [2022-11-21 16:17:23,653 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 212 transitions, 941 flow [2022-11-21 16:17:23,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 119.0) internal successors, (4165), 35 states have internal predecessors, (4165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:23,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:23,654 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:23,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 16:17:23,863 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash -215905768, now seen corresponding path program 1 times [2022-11-21 16:17:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902670924] [2022-11-21 16:17:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:17:23,886 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 16:17:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 16:17:23,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 16:17:23,914 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 16:17:23,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2022-11-21 16:17:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2022-11-21 16:17:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2022-11-21 16:17:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2022-11-21 16:17:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2022-11-21 16:17:23,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2022-11-21 16:17:23,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2022-11-21 16:17:23,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2022-11-21 16:17:23,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2022-11-21 16:17:23,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 10 remaining) [2022-11-21 16:17:23,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 16:17:23,917 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:17:23,917 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-21 16:17:23,918 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-21 16:17:23,959 INFO L144 ThreadInstanceAdder]: Constructed 16 joinOtherThreadTransitions. [2022-11-21 16:17:23,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 229 transitions, 570 flow [2022-11-21 16:17:26,064 INFO L130 PetriNetUnfolder]: 2915/16018 cut-off events. [2022-11-21 16:17:26,064 INFO L131 PetriNetUnfolder]: For 2144/2144 co-relation queries the response was YES. [2022-11-21 16:17:26,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18183 conditions, 16018 events. 2915/16018 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 158505 event pairs, 626 based on Foata normal form. 0/13310 useless extension candidates. Maximal degree in co-relation 9131. Up to 1024 conditions per place. [2022-11-21 16:17:26,152 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 229 transitions, 570 flow [2022-11-21 16:17:26,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 229 transitions, 570 flow [2022-11-21 16:17:26,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:17:26,194 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;@7da61fbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:17:26,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-21 16:17:26,202 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2022-11-21 16:17:26,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 16:17:26,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:26,203 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] [2022-11-21 16:17:26,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:26,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:26,204 INFO L85 PathProgramCache]: Analyzing trace with hash -21087098, now seen corresponding path program 1 times [2022-11-21 16:17:26,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:26,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581080475] [2022-11-21 16:17:26,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:26,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:26,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:26,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581080475] [2022-11-21 16:17:26,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581080475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:26,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:26,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:26,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061592621] [2022-11-21 16:17:26,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:26,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:17:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:17:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:17:26,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:26,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 229 transitions, 570 flow. Second operand has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:26,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:26,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:26,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:30,400 INFO L130 PetriNetUnfolder]: 2671/23621 cut-off events. [2022-11-21 16:17:30,400 INFO L131 PetriNetUnfolder]: For 3252/3252 co-relation queries the response was YES. [2022-11-21 16:17:30,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34583 conditions, 23621 events. 2671/23621 cut-off events. For 3252/3252 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 285469 event pairs, 142 based on Foata normal form. 11579/31788 useless extension candidates. Maximal degree in co-relation 17286. Up to 5039 conditions per place. [2022-11-21 16:17:30,510 INFO L137 encePairwiseOnDemand]: 204/229 looper letters, 85 selfloop transitions, 10 changer transitions 27/254 dead transitions. [2022-11-21 16:17:30,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 254 transitions, 862 flow [2022-11-21 16:17:30,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 909 transitions. [2022-11-21 16:17:30,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7938864628820961 [2022-11-21 16:17:30,512 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 909 transitions. [2022-11-21 16:17:30,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 909 transitions. [2022-11-21 16:17:30,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:30,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 909 transitions. [2022-11-21 16:17:30,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:30,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:30,518 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:30,518 INFO L175 Difference]: Start difference. First operand has 216 places, 229 transitions, 570 flow. Second operand 5 states and 909 transitions. [2022-11-21 16:17:30,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 254 transitions, 862 flow [2022-11-21 16:17:30,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 254 transitions, 862 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:30,524 INFO L231 Difference]: Finished difference. Result has 220 places, 195 transitions, 564 flow [2022-11-21 16:17:30,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=564, PETRI_PLACES=220, PETRI_TRANSITIONS=195} [2022-11-21 16:17:30,526 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 4 predicate places. [2022-11-21 16:17:30,526 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 195 transitions, 564 flow [2022-11-21 16:17:30,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:30,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:30,527 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] [2022-11-21 16:17:30,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 16:17:30,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1781010601, now seen corresponding path program 1 times [2022-11-21 16:17:30,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:30,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814213445] [2022-11-21 16:17:30,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:30,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:30,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814213445] [2022-11-21 16:17:30,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814213445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:30,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:30,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 16:17:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471455989] [2022-11-21 16:17:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 16:17:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 16:17:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 16:17:30,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 229 [2022-11-21 16:17:30,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 195 transitions, 564 flow. Second operand has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:30,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:30,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 229 [2022-11-21 16:17:30,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:33,822 INFO L130 PetriNetUnfolder]: 2671/15925 cut-off events. [2022-11-21 16:17:33,822 INFO L131 PetriNetUnfolder]: For 5670/5670 co-relation queries the response was YES. [2022-11-21 16:17:33,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29020 conditions, 15925 events. 2671/15925 cut-off events. For 5670/5670 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167692 event pairs, 636 based on Foata normal form. 0/13888 useless extension candidates. Maximal degree in co-relation 14543. Up to 7997 conditions per place. [2022-11-21 16:17:33,929 INFO L137 encePairwiseOnDemand]: 222/229 looper letters, 73 selfloop transitions, 6 changer transitions 0/202 dead transitions. [2022-11-21 16:17:33,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 202 transitions, 740 flow [2022-11-21 16:17:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:33,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2022-11-21 16:17:33,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7048034934497817 [2022-11-21 16:17:33,931 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2022-11-21 16:17:33,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2022-11-21 16:17:33,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:33,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2022-11-21 16:17:33,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:33,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:33,934 INFO L175 Difference]: Start difference. First operand has 220 places, 195 transitions, 564 flow. Second operand 5 states and 807 transitions. [2022-11-21 16:17:33,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 202 transitions, 740 flow [2022-11-21 16:17:33,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 202 transitions, 740 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:33,942 INFO L231 Difference]: Finished difference. Result has 201 places, 199 transitions, 607 flow [2022-11-21 16:17:33,942 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=607, PETRI_PLACES=201, PETRI_TRANSITIONS=199} [2022-11-21 16:17:33,943 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, -15 predicate places. [2022-11-21 16:17:33,943 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 199 transitions, 607 flow [2022-11-21 16:17:33,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:33,943 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] [2022-11-21 16:17:33,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 16:17:33,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:33,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1883957143, now seen corresponding path program 1 times [2022-11-21 16:17:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:33,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931092964] [2022-11-21 16:17:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:33,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:33,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:33,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931092964] [2022-11-21 16:17:33,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931092964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:33,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:33,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:33,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423731043] [2022-11-21 16:17:33,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:33,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:17:33,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:33,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:17:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:17:33,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:33,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 199 transitions, 607 flow. Second operand has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:33,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:34,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:34,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:37,145 INFO L130 PetriNetUnfolder]: 2671/15915 cut-off events. [2022-11-21 16:17:37,145 INFO L131 PetriNetUnfolder]: For 5677/5677 co-relation queries the response was YES. [2022-11-21 16:17:37,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28292 conditions, 15915 events. 2671/15915 cut-off events. For 5677/5677 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167790 event pairs, 142 based on Foata normal form. 0/13893 useless extension candidates. Maximal degree in co-relation 27008. Up to 4844 conditions per place. [2022-11-21 16:17:37,261 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 86 selfloop transitions, 11 changer transitions 0/232 dead transitions. [2022-11-21 16:17:37,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 232 transitions, 919 flow [2022-11-21 16:17:37,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2022-11-21 16:17:37,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7703056768558952 [2022-11-21 16:17:37,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2022-11-21 16:17:37,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2022-11-21 16:17:37,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:37,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2022-11-21 16:17:37,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:37,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:37,271 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:37,271 INFO L175 Difference]: Start difference. First operand has 201 places, 199 transitions, 607 flow. Second operand 5 states and 882 transitions. [2022-11-21 16:17:37,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 232 transitions, 919 flow [2022-11-21 16:17:37,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 232 transitions, 916 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-21 16:17:37,283 INFO L231 Difference]: Finished difference. Result has 207 places, 201 transitions, 651 flow [2022-11-21 16:17:37,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=651, PETRI_PLACES=207, PETRI_TRANSITIONS=201} [2022-11-21 16:17:37,285 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, -9 predicate places. [2022-11-21 16:17:37,285 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 201 transitions, 651 flow [2022-11-21 16:17:37,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:37,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:37,286 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:37,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-21 16:17:37,286 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:37,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1977880675, now seen corresponding path program 1 times [2022-11-21 16:17:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:37,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348446134] [2022-11-21 16:17:37,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:37,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348446134] [2022-11-21 16:17:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348446134] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855912929] [2022-11-21 16:17:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:37,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:37,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:37,395 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:37,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 16:17:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:37,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:37,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:37,622 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:37,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:37,725 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855912929] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:37,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:37,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:17:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230001092] [2022-11-21 16:17:37,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:17:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:17:37,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:17:37,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:37,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 201 transitions, 651 flow. Second operand has 12 states, 12 states have (on average 160.16666666666666) internal successors, (1922), 12 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:37,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:37,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:37,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:41,349 INFO L130 PetriNetUnfolder]: 2671/15912 cut-off events. [2022-11-21 16:17:41,349 INFO L131 PetriNetUnfolder]: For 8753/8753 co-relation queries the response was YES. [2022-11-21 16:17:41,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29263 conditions, 15912 events. 2671/15912 cut-off events. For 8753/8753 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167905 event pairs, 142 based on Foata normal form. 3/13923 useless extension candidates. Maximal degree in co-relation 27926. Up to 4751 conditions per place. [2022-11-21 16:17:41,437 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 94 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2022-11-21 16:17:41,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 255 transitions, 1098 flow [2022-11-21 16:17:41,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:17:41,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:17:41,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2790 transitions. [2022-11-21 16:17:41,441 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7166709478551245 [2022-11-21 16:17:41,441 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2790 transitions. [2022-11-21 16:17:41,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2790 transitions. [2022-11-21 16:17:41,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:41,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2790 transitions. [2022-11-21 16:17:41,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 164.11764705882354) internal successors, (2790), 17 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:41,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:41,449 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:41,449 INFO L175 Difference]: Start difference. First operand has 207 places, 201 transitions, 651 flow. Second operand 17 states and 2790 transitions. [2022-11-21 16:17:41,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 255 transitions, 1098 flow [2022-11-21 16:17:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 255 transitions, 1098 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:41,461 INFO L231 Difference]: Finished difference. Result has 222 places, 211 transitions, 758 flow [2022-11-21 16:17:41,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=758, PETRI_PLACES=222, PETRI_TRANSITIONS=211} [2022-11-21 16:17:41,462 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 6 predicate places. [2022-11-21 16:17:41,463 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 211 transitions, 758 flow [2022-11-21 16:17:41,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 160.16666666666666) internal successors, (1922), 12 states have internal predecessors, (1922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:41,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:41,464 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:41,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-21 16:17:41,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-21 16:17:41,669 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:41,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1184757824, now seen corresponding path program 1 times [2022-11-21 16:17:41,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:41,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651434771] [2022-11-21 16:17:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:41,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:41,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:41,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651434771] [2022-11-21 16:17:41,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651434771] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:41,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285829166] [2022-11-21 16:17:41,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:41,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:41,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:41,924 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:41,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 16:17:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:42,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:17:42,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285829166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:42,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:17:42,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:17:42,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417115511] [2022-11-21 16:17:42,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:42,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:17:42,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:42,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:17:42,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:17:42,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:42,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 211 transitions, 758 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:42,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:42,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:42,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:45,174 INFO L130 PetriNetUnfolder]: 2671/15909 cut-off events. [2022-11-21 16:17:45,174 INFO L131 PetriNetUnfolder]: For 11560/11560 co-relation queries the response was YES. [2022-11-21 16:17:45,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29892 conditions, 15909 events. 2671/15909 cut-off events. For 11560/11560 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 167742 event pairs, 142 based on Foata normal form. 3/13920 useless extension candidates. Maximal degree in co-relation 28519. Up to 4747 conditions per place. [2022-11-21 16:17:45,265 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 84 selfloop transitions, 20 changer transitions 0/239 dead transitions. [2022-11-21 16:17:45,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 239 transitions, 1062 flow [2022-11-21 16:17:45,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:17:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:17:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1193 transitions. [2022-11-21 16:17:45,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7442295695570805 [2022-11-21 16:17:45,267 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1193 transitions. [2022-11-21 16:17:45,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1193 transitions. [2022-11-21 16:17:45,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:45,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1193 transitions. [2022-11-21 16:17:45,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:45,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:45,270 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:45,270 INFO L175 Difference]: Start difference. First operand has 222 places, 211 transitions, 758 flow. Second operand 7 states and 1193 transitions. [2022-11-21 16:17:45,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 239 transitions, 1062 flow [2022-11-21 16:17:45,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 239 transitions, 1004 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-11-21 16:17:45,285 INFO L231 Difference]: Finished difference. Result has 217 places, 208 transitions, 722 flow [2022-11-21 16:17:45,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=217, PETRI_TRANSITIONS=208} [2022-11-21 16:17:45,285 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2022-11-21 16:17:45,286 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 208 transitions, 722 flow [2022-11-21 16:17:45,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:45,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:45,286 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:45,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-21 16:17:45,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:45,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:45,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:45,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1436433645, now seen corresponding path program 1 times [2022-11-21 16:17:45,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:45,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79208666] [2022-11-21 16:17:45,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:45,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:45,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:17:45,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:45,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79208666] [2022-11-21 16:17:45,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79208666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:45,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:45,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972051790] [2022-11-21 16:17:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:45,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:17:45,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:17:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:17:45,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:45,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 208 transitions, 722 flow. Second operand has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:45,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:45,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:48,756 INFO L130 PetriNetUnfolder]: 2671/15817 cut-off events. [2022-11-21 16:17:48,756 INFO L131 PetriNetUnfolder]: For 10971/10971 co-relation queries the response was YES. [2022-11-21 16:17:48,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31264 conditions, 15817 events. 2671/15817 cut-off events. For 10971/10971 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166575 event pairs, 142 based on Foata normal form. 0/13993 useless extension candidates. Maximal degree in co-relation 29862. Up to 6004 conditions per place. [2022-11-21 16:17:48,838 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 90 selfloop transitions, 14 changer transitions 0/240 dead transitions. [2022-11-21 16:17:48,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 240 transitions, 1046 flow [2022-11-21 16:17:48,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:17:48,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:17:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2022-11-21 16:17:48,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7703056768558952 [2022-11-21 16:17:48,839 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2022-11-21 16:17:48,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2022-11-21 16:17:48,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:48,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2022-11-21 16:17:48,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:48,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:48,845 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:17:48,845 INFO L175 Difference]: Start difference. First operand has 217 places, 208 transitions, 722 flow. Second operand 5 states and 882 transitions. [2022-11-21 16:17:48,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 240 transitions, 1046 flow [2022-11-21 16:17:48,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 240 transitions, 1024 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:17:48,858 INFO L231 Difference]: Finished difference. Result has 220 places, 210 transitions, 756 flow [2022-11-21 16:17:48,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=756, PETRI_PLACES=220, PETRI_TRANSITIONS=210} [2022-11-21 16:17:48,865 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 4 predicate places. [2022-11-21 16:17:48,865 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 210 transitions, 756 flow [2022-11-21 16:17:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:48,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:48,866 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:48,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-21 16:17:48,867 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1480081884, now seen corresponding path program 1 times [2022-11-21 16:17:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:48,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670444782] [2022-11-21 16:17:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:48,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670444782] [2022-11-21 16:17:48,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670444782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:48,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302780572] [2022-11-21 16:17:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:48,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:48,969 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:48,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 16:17:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:49,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:49,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:49,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302780572] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:49,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:49,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:17:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928233551] [2022-11-21 16:17:49,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:49,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:17:49,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:49,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:17:49,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:17:49,265 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:49,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 210 transitions, 756 flow. Second operand has 12 states, 12 states have (on average 160.33333333333334) internal successors, (1924), 12 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:49,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:49,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:49,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:52,806 INFO L130 PetriNetUnfolder]: 2671/15802 cut-off events. [2022-11-21 16:17:52,806 INFO L131 PetriNetUnfolder]: For 16090/16090 co-relation queries the response was YES. [2022-11-21 16:17:52,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31835 conditions, 15802 events. 2671/15802 cut-off events. For 16090/16090 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166398 event pairs, 142 based on Foata normal form. 15/14487 useless extension candidates. Maximal degree in co-relation 30383. Up to 4679 conditions per place. [2022-11-21 16:17:52,896 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 98 selfloop transitions, 29 changer transitions 0/263 dead transitions. [2022-11-21 16:17:52,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 263 transitions, 1215 flow [2022-11-21 16:17:52,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 16:17:52,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-21 16:17:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2790 transitions. [2022-11-21 16:17:52,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7166709478551245 [2022-11-21 16:17:52,900 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2790 transitions. [2022-11-21 16:17:52,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2790 transitions. [2022-11-21 16:17:52,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:52,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2790 transitions. [2022-11-21 16:17:52,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 164.11764705882354) internal successors, (2790), 17 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:52,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:52,907 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 229.0) internal successors, (4122), 18 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:52,907 INFO L175 Difference]: Start difference. First operand has 220 places, 210 transitions, 756 flow. Second operand 17 states and 2790 transitions. [2022-11-21 16:17:52,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 263 transitions, 1215 flow [2022-11-21 16:17:52,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 263 transitions, 1215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:52,931 INFO L231 Difference]: Finished difference. Result has 235 places, 220 transitions, 881 flow [2022-11-21 16:17:52,931 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=881, PETRI_PLACES=235, PETRI_TRANSITIONS=220} [2022-11-21 16:17:52,932 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 19 predicate places. [2022-11-21 16:17:52,932 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 220 transitions, 881 flow [2022-11-21 16:17:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 160.33333333333334) internal successors, (1924), 12 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:52,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:52,933 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:52,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:53,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:53,139 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1362102887, now seen corresponding path program 1 times [2022-11-21 16:17:53,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:53,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995206497] [2022-11-21 16:17:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:53,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:53,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995206497] [2022-11-21 16:17:53,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995206497] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:53,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303717295] [2022-11-21 16:17:53,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:53,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:53,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:53,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:53,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 16:17:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:53,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:17:53,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:53,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:17:53,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303717295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:17:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:17:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471314765] [2022-11-21 16:17:53,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:53,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:17:53,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:53,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:17:53,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:17:53,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:53,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 220 transitions, 881 flow. Second operand has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 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) [2022-11-21 16:17:53,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:53,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:53,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:56,825 INFO L130 PetriNetUnfolder]: 2671/15787 cut-off events. [2022-11-21 16:17:56,825 INFO L131 PetriNetUnfolder]: For 20224/20224 co-relation queries the response was YES. [2022-11-21 16:17:56,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32472 conditions, 15787 events. 2671/15787 cut-off events. For 20224/20224 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 166219 event pairs, 142 based on Foata normal form. 15/14472 useless extension candidates. Maximal degree in co-relation 30982. Up to 4659 conditions per place. [2022-11-21 16:17:56,936 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 88 selfloop transitions, 23 changer transitions 0/247 dead transitions. [2022-11-21 16:17:56,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 247 transitions, 1197 flow [2022-11-21 16:17:56,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:17:56,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:17:56,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1193 transitions. [2022-11-21 16:17:56,945 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7442295695570805 [2022-11-21 16:17:56,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1193 transitions. [2022-11-21 16:17:56,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1193 transitions. [2022-11-21 16:17:56,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:56,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1193 transitions. [2022-11-21 16:17:56,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.42857142857142) internal successors, (1193), 7 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:56,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:56,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:56,951 INFO L175 Difference]: Start difference. First operand has 235 places, 220 transitions, 881 flow. Second operand 7 states and 1193 transitions. [2022-11-21 16:17:56,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 247 transitions, 1197 flow [2022-11-21 16:17:56,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 247 transitions, 1118 flow, removed 9 selfloop flow, removed 8 redundant places. [2022-11-21 16:17:56,973 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 830 flow [2022-11-21 16:17:56,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=784, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=830, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2022-11-21 16:17:56,973 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 13 predicate places. [2022-11-21 16:17:56,974 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 830 flow [2022-11-21 16:17:56,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 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) [2022-11-21 16:17:56,974 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:56,974 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-21 16:17:56,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:57,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-21 16:17:57,175 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:17:57,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:57,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2008499331, now seen corresponding path program 1 times [2022-11-21 16:17:57,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:57,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909974109] [2022-11-21 16:17:57,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:57,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:57,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:17:57,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:57,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909974109] [2022-11-21 16:17:57,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909974109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:57,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:57,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 16:17:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431104357] [2022-11-21 16:17:57,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:57,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 16:17:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:57,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 16:17:57,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 16:17:57,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:17:57,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 830 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:17:57,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:57,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:17:57,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:00,599 INFO L130 PetriNetUnfolder]: 2671/15524 cut-off events. [2022-11-21 16:18:00,599 INFO L131 PetriNetUnfolder]: For 16421/16421 co-relation queries the response was YES. [2022-11-21 16:18:00,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33756 conditions, 15524 events. 2671/15524 cut-off events. For 16421/16421 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 162011 event pairs, 142 based on Foata normal form. 0/14704 useless extension candidates. Maximal degree in co-relation 32267. Up to 6004 conditions per place. [2022-11-21 16:18:00,671 INFO L137 encePairwiseOnDemand]: 217/229 looper letters, 94 selfloop transitions, 17 changer transitions 0/248 dead transitions. [2022-11-21 16:18:00,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 248 transitions, 1166 flow [2022-11-21 16:18:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 16:18:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 16:18:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2022-11-21 16:18:00,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7703056768558952 [2022-11-21 16:18:00,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2022-11-21 16:18:00,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2022-11-21 16:18:00,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:00,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2022-11-21 16:18:00,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:00,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:18:00,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 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) [2022-11-21 16:18:00,675 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 830 flow. Second operand 5 states and 882 transitions. [2022-11-21 16:18:00,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 248 transitions, 1166 flow [2022-11-21 16:18:00,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 248 transitions, 1141 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:18:00,695 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 870 flow [2022-11-21 16:18:00,695 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2022-11-21 16:18:00,695 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 16 predicate places. [2022-11-21 16:18:00,696 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 870 flow [2022-11-21 16:18:00,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:00,696 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:00,696 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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] [2022-11-21 16:18:00,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 16:18:00,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:18:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -718780052, now seen corresponding path program 1 times [2022-11-21 16:18:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:00,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163465811] [2022-11-21 16:18:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:01,508 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 80 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 16:18:01,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:01,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163465811] [2022-11-21 16:18:01,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163465811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:01,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455465314] [2022-11-21 16:18:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:01,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:01,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:01,515 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:01,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 16:18:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:01,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-21 16:18:01,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:01,845 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:18:01,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 16:18:01,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:18:02,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:18:02,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:18:02,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:18:02,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:18:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 86 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:02,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:02,980 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_473) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 2 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:18:03,053 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_473) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 3 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:18:03,327 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_473) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) (+ 5 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2022-11-21 16:18:03,374 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_473 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#setPool~0#1.base| v_ArrVal_473) |c_~#iSet~0.base|) |c_~#iSet~0.offset|) 5)) is different from false [2022-11-21 16:18:03,569 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2022-11-21 16:18:03,610 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-21 16:18:03,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2022-11-21 16:18:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 77 not checked. [2022-11-21 16:18:03,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455465314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:03,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:03,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 41 [2022-11-21 16:18:03,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52289423] [2022-11-21 16:18:03,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:03,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-21 16:18:03,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-21 16:18:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1140, Unknown=10, NotChecked=292, Total=1640 [2022-11-21 16:18:03,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 229 [2022-11-21 16:18:03,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 870 flow. Second operand has 41 states, 41 states have (on average 129.97560975609755) internal successors, (5329), 41 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:03,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:03,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 229 [2022-11-21 16:18:03,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:17,568 INFO L130 PetriNetUnfolder]: 3210/20095 cut-off events. [2022-11-21 16:18:17,568 INFO L131 PetriNetUnfolder]: For 33157/33157 co-relation queries the response was YES. [2022-11-21 16:18:17,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45598 conditions, 20095 events. 3210/20095 cut-off events. For 33157/33157 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 223764 event pairs, 792 based on Foata normal form. 1/19661 useless extension candidates. Maximal degree in co-relation 36715. Up to 7917 conditions per place. [2022-11-21 16:18:17,698 INFO L137 encePairwiseOnDemand]: 210/229 looper letters, 245 selfloop transitions, 27 changer transitions 6/385 dead transitions. [2022-11-21 16:18:17,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 385 transitions, 2322 flow [2022-11-21 16:18:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-21 16:18:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-21 16:18:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2743 transitions. [2022-11-21 16:18:17,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5989082969432314 [2022-11-21 16:18:17,703 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2743 transitions. [2022-11-21 16:18:17,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2743 transitions. [2022-11-21 16:18:17,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:17,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2743 transitions. [2022-11-21 16:18:17,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 137.15) internal successors, (2743), 20 states have internal predecessors, (2743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 229.0) internal successors, (4809), 21 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,714 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 229.0) internal successors, (4809), 21 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,714 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 870 flow. Second operand 20 states and 2743 transitions. [2022-11-21 16:18:17,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 385 transitions, 2322 flow [2022-11-21 16:18:17,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 385 transitions, 2322 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:18:17,794 INFO L231 Difference]: Finished difference. Result has 262 places, 239 transitions, 1125 flow [2022-11-21 16:18:17,795 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1125, PETRI_PLACES=262, PETRI_TRANSITIONS=239} [2022-11-21 16:18:17,795 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 46 predicate places. [2022-11-21 16:18:17,795 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 239 transitions, 1125 flow [2022-11-21 16:18:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 129.97560975609755) internal successors, (5329), 41 states have internal predecessors, (5329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:17,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:17,796 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:17,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:17,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-21 16:18:17,997 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:18:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:17,997 INFO L85 PathProgramCache]: Analyzing trace with hash 655660446, now seen corresponding path program 1 times [2022-11-21 16:18:17,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:17,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612896636] [2022-11-21 16:18:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:17,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:18,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:18,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612896636] [2022-11-21 16:18:18,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612896636] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:18,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852572480] [2022-11-21 16:18:18,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:18,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:18,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:18,111 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:18,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 16:18:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:18,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:18:18,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:18,332 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:18,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:18,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:18,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852572480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:18,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:18,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-21 16:18:18,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882976032] [2022-11-21 16:18:18,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:18,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 16:18:18,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:18,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 16:18:18,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-21 16:18:18,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:18:18,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 239 transitions, 1125 flow. Second operand has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:18,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:18,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:18:18,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:24,962 INFO L130 PetriNetUnfolder]: 4502/27389 cut-off events. [2022-11-21 16:18:24,962 INFO L131 PetriNetUnfolder]: For 62333/62333 co-relation queries the response was YES. [2022-11-21 16:18:25,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64457 conditions, 27389 events. 4502/27389 cut-off events. For 62333/62333 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 324067 event pairs, 1 based on Foata normal form. 607/27161 useless extension candidates. Maximal degree in co-relation 52588. Up to 4551 conditions per place. [2022-11-21 16:18:25,180 INFO L137 encePairwiseOnDemand]: 216/229 looper letters, 136 selfloop transitions, 39 changer transitions 0/319 dead transitions. [2022-11-21 16:18:25,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 319 transitions, 1829 flow [2022-11-21 16:18:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:18:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 16:18:25,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2977 transitions. [2022-11-21 16:18:25,185 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7222222222222222 [2022-11-21 16:18:25,186 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2977 transitions. [2022-11-21 16:18:25,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2977 transitions. [2022-11-21 16:18:25,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:25,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2977 transitions. [2022-11-21 16:18:25,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 165.38888888888889) internal successors, (2977), 18 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:25,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 229.0) internal successors, (4351), 19 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:25,198 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 229.0) internal successors, (4351), 19 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:25,199 INFO L175 Difference]: Start difference. First operand has 262 places, 239 transitions, 1125 flow. Second operand 18 states and 2977 transitions. [2022-11-21 16:18:25,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 319 transitions, 1829 flow [2022-11-21 16:18:25,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 319 transitions, 1818 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-21 16:18:25,554 INFO L231 Difference]: Finished difference. Result has 280 places, 254 transitions, 1333 flow [2022-11-21 16:18:25,554 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1333, PETRI_PLACES=280, PETRI_TRANSITIONS=254} [2022-11-21 16:18:25,555 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 64 predicate places. [2022-11-21 16:18:25,555 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 254 transitions, 1333 flow [2022-11-21 16:18:25,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:25,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:25,556 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:25,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-21 16:18:25,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-21 16:18:25,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:18:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 943399673, now seen corresponding path program 1 times [2022-11-21 16:18:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:25,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522169994] [2022-11-21 16:18:25,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:25,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:25,865 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:25,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522169994] [2022-11-21 16:18:25,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522169994] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:25,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975063890] [2022-11-21 16:18:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:25,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:25,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:25,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 16:18:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:26,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 16:18:26,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:26,097 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:18:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975063890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:26,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:18:26,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-21 16:18:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698734495] [2022-11-21 16:18:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:18:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:18:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-21 16:18:26,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 229 [2022-11-21 16:18:26,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 254 transitions, 1333 flow. Second operand has 6 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:26,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:26,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 229 [2022-11-21 16:18:26,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:32,632 INFO L130 PetriNetUnfolder]: 4502/26682 cut-off events. [2022-11-21 16:18:32,632 INFO L131 PetriNetUnfolder]: For 83108/83108 co-relation queries the response was YES. [2022-11-21 16:18:32,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67894 conditions, 26682 events. 4502/26682 cut-off events. For 83108/83108 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 312273 event pairs, 881 based on Foata normal form. 707/26554 useless extension candidates. Maximal degree in co-relation 56172. Up to 5471 conditions per place. [2022-11-21 16:18:32,877 INFO L137 encePairwiseOnDemand]: 218/229 looper letters, 101 selfloop transitions, 31 changer transitions 1/277 dead transitions. [2022-11-21 16:18:32,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 277 transitions, 1680 flow [2022-11-21 16:18:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:18:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:18:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1194 transitions. [2022-11-21 16:18:32,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7448533998752339 [2022-11-21 16:18:32,880 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1194 transitions. [2022-11-21 16:18:32,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1194 transitions. [2022-11-21 16:18:32,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:32,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1194 transitions. [2022-11-21 16:18:32,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.57142857142858) internal successors, (1194), 7 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:32,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:32,886 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 229.0) internal successors, (1832), 8 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:32,887 INFO L175 Difference]: Start difference. First operand has 280 places, 254 transitions, 1333 flow. Second operand 7 states and 1194 transitions. [2022-11-21 16:18:32,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 277 transitions, 1680 flow [2022-11-21 16:18:33,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 277 transitions, 1581 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-11-21 16:18:33,462 INFO L231 Difference]: Finished difference. Result has 275 places, 249 transitions, 1249 flow [2022-11-21 16:18:33,462 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1249, PETRI_PLACES=275, PETRI_TRANSITIONS=249} [2022-11-21 16:18:33,462 INFO L288 CegarLoopForPetriNet]: 216 programPoint places, 59 predicate places. [2022-11-21 16:18:33,462 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 249 transitions, 1249 flow [2022-11-21 16:18:33,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.16666666666666) internal successors, (973), 6 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:33,463 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:18:33,463 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:33,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 16:18:33,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:33,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-21 16:18:33,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:33,665 INFO L85 PathProgramCache]: Analyzing trace with hash -557841371, now seen corresponding path program 1 times [2022-11-21 16:18:33,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:33,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394826589] [2022-11-21 16:18:33,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:33,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:33,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:18:33,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:33,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394826589] [2022-11-21 16:18:33,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394826589] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:18:33,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801809488] [2022-11-21 16:18:33,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:33,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:18:33,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:33,809 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:18:33,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73c1c953-1058-4a46-bcfd-0779cdebf05d/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 16:18:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:33,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 16:18:33,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:18:34,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:18:34,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:18:34,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:18:34,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:18:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 16:18:34,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801809488] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:34,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:34,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 19 [2022-11-21 16:18:34,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785754304] [2022-11-21 16:18:34,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:34,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 16:18:34,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 16:18:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:18:34,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 229 [2022-11-21 16:18:34,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 249 transitions, 1249 flow. Second operand has 19 states, 19 states have (on average 140.31578947368422) internal successors, (2666), 19 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 16:18:34,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:34,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 229 [2022-11-21 16:18:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand