./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:50:17,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:50:17,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:50:17,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:50:17,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:50:17,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:50:17,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:50:17,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:50:17,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:50:17,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:50:17,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:50:17,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:50:17,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:50:17,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:50:17,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:50:17,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:50:17,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:50:17,431 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:50:17,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:50:17,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:50:17,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:50:17,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:50:17,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:50:17,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:50:17,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:50:17,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:50:17,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:50:17,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:50:17,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:50:17,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:50:17,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:50:17,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:50:17,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:50:17,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:50:17,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:50:17,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:50:17,476 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:50:17,476 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:50:17,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:50:17,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:50:17,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:50:17,479 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:50:17,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:50:17,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:50:17,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:50:17,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:50:17,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:50:17,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:50:17,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:50:17,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:50:17,523 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:50:17,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:50:17,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:50:17,525 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:50:17,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:50:17,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:50:17,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:50:17,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:50:17,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:50:17,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:50:17,526 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:50:17,526 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:50:17,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:50:17,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:50:17,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:50:17,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:50:17,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:50:17,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:50:17,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:50:17,530 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:50:17,530 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:50:17,530 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:50:17,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:50:17,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:50:17,531 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:50:17,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:50:17,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:50:17,532 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_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-16 12:50:17,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:50:17,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:50:17,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:50:17,878 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:50:17,879 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:50:17,881 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-16 12:50:17,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/data/28f9def05/7768cd2d1cce4787b5ec7835593b8a65/FLAGbf70ee21c [2022-11-16 12:50:18,578 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:50:18,579 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-16 12:50:18,587 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/data/28f9def05/7768cd2d1cce4787b5ec7835593b8a65/FLAGbf70ee21c [2022-11-16 12:50:18,944 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/data/28f9def05/7768cd2d1cce4787b5ec7835593b8a65 [2022-11-16 12:50:18,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:50:18,948 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:50:18,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:50:18,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:50:18,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:50:18,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:50:18" (1/1) ... [2022-11-16 12:50:18,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0ead4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:18, skipping insertion in model container [2022-11-16 12:50:18,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:50:18" (1/1) ... [2022-11-16 12:50:18,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:50:19,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:50:19,302 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-16 12:50:19,311 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:50:19,320 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:50:19,365 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-16 12:50:19,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:50:19,389 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:50:19,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19 WrapperNode [2022-11-16 12:50:19,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:50:19,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:50:19,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:50:19,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:50:19,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,468 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-11-16 12:50:19,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:50:19,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:50:19,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:50:19,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:50:19,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,517 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:50:19,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:50:19,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:50:19,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:50:19,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (1/1) ... [2022-11-16 12:50:19,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:50:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:19,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:50:19,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:50:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:50:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:50:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:50:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:50:19,646 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:50:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:50:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:50:19,647 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:50:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:50:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:50:19,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:50:19,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:50:19,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:50:19,650 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:50:19,812 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:50:19,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:50:20,926 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:50:20,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:50:20,946 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:50:20,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:50:20 BoogieIcfgContainer [2022-11-16 12:50:20,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:50:20,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:50:20,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:50:20,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:50:20,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:50:18" (1/3) ... [2022-11-16 12:50:20,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6041581f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:50:20, skipping insertion in model container [2022-11-16 12:50:20,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:50:19" (2/3) ... [2022-11-16 12:50:20,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6041581f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:50:20, skipping insertion in model container [2022-11-16 12:50:20,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:50:20" (3/3) ... [2022-11-16 12:50:20,963 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-16 12:50:20,973 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:50:20,986 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:50:20,986 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-16 12:50:20,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:50:21,216 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:50:21,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-11-16 12:50:21,719 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-11-16 12:50:21,719 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:50:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-16 12:50:21,742 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-11-16 12:50:21,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-11-16 12:50:21,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:50:21,778 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;@344c512, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:50:21,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-16 12:50:21,793 INFO L130 PetriNetUnfolder]: 3/94 cut-off events. [2022-11-16 12:50:21,793 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:50:21,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:21,794 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:21,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:21,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:21,800 INFO L85 PathProgramCache]: Analyzing trace with hash 2103476083, now seen corresponding path program 1 times [2022-11-16 12:50:21,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:21,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407101768] [2022-11-16 12:50:21,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:21,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:22,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:22,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407101768] [2022-11-16 12:50:22,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407101768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:22,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:22,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590274276] [2022-11-16 12:50:22,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:22,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:22,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:22,433 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-16 12:50:22,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 639 transitions, 1290 flow. Second operand has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:22,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:22,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-16 12:50:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:23,096 INFO L130 PetriNetUnfolder]: 71/1120 cut-off events. [2022-11-16 12:50:23,096 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-16 12:50:23,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 1120 events. 71/1120 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 6226 event pairs, 0 based on Foata normal form. 54/990 useless extension candidates. Maximal degree in co-relation 691. Up to 30 conditions per place. [2022-11-16 12:50:23,132 INFO L137 encePairwiseOnDemand]: 620/659 looper letters, 38 selfloop transitions, 9 changer transitions 8/634 dead transitions. [2022-11-16 12:50:23,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 634 transitions, 1390 flow [2022-11-16 12:50:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:50:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:50:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3116 transitions. [2022-11-16 12:50:23,168 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456752655538695 [2022-11-16 12:50:23,169 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3116 transitions. [2022-11-16 12:50:23,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3116 transitions. [2022-11-16 12:50:23,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:23,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3116 transitions. [2022-11-16 12:50:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 623.2) internal successors, (3116), 5 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:23,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:23,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:23,212 INFO L175 Difference]: Start difference. First operand has 586 places, 639 transitions, 1290 flow. Second operand 5 states and 3116 transitions. [2022-11-16 12:50:23,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 634 transitions, 1390 flow [2022-11-16 12:50:23,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 634 transitions, 1374 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:23,244 INFO L231 Difference]: Finished difference. Result has 587 places, 613 transitions, 1282 flow [2022-11-16 12:50:23,247 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1282, PETRI_PLACES=587, PETRI_TRANSITIONS=613} [2022-11-16 12:50:23,251 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 1 predicate places. [2022-11-16 12:50:23,252 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 613 transitions, 1282 flow [2022-11-16 12:50:23,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 604.5) internal successors, (2418), 4 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:23,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:23,255 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:23,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:50:23,256 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:23,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:23,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1350065717, now seen corresponding path program 1 times [2022-11-16 12:50:23,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:23,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400735830] [2022-11-16 12:50:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:23,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400735830] [2022-11-16 12:50:23,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400735830] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327549173] [2022-11-16 12:50:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:23,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:23,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:23,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:23,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:50:23,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:23,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:50:23,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:23,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:24,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:24,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327549173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:24,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:50:24,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:50:24,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968040204] [2022-11-16 12:50:24,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:24,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:50:24,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:24,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:50:24,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:50:24,039 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-16 12:50:24,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 613 transitions, 1282 flow. Second operand has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:24,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:24,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-16 12:50:24,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:25,416 INFO L130 PetriNetUnfolder]: 176/2626 cut-off events. [2022-11-16 12:50:25,416 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-16 12:50:25,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2805 conditions, 2626 events. 176/2626 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20230 event pairs, 0 based on Foata normal form. 6/2192 useless extension candidates. Maximal degree in co-relation 2020. Up to 22 conditions per place. [2022-11-16 12:50:25,514 INFO L137 encePairwiseOnDemand]: 644/659 looper letters, 71 selfloop transitions, 40 changer transitions 0/690 dead transitions. [2022-11-16 12:50:25,515 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 690 transitions, 1720 flow [2022-11-16 12:50:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:50:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:50:25,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 10971 transitions. [2022-11-16 12:50:25,538 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.924886191198786 [2022-11-16 12:50:25,538 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 10971 transitions. [2022-11-16 12:50:25,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 10971 transitions. [2022-11-16 12:50:25,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:25,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 10971 transitions. [2022-11-16 12:50:25,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 609.5) internal successors, (10971), 18 states have internal predecessors, (10971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:25,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:25,605 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 659.0) internal successors, (12521), 19 states have internal predecessors, (12521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:25,605 INFO L175 Difference]: Start difference. First operand has 587 places, 613 transitions, 1282 flow. Second operand 18 states and 10971 transitions. [2022-11-16 12:50:25,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 690 transitions, 1720 flow [2022-11-16 12:50:25,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 690 transitions, 1715 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:25,620 INFO L231 Difference]: Finished difference. Result has 600 places, 640 transitions, 1515 flow [2022-11-16 12:50:25,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=593, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1515, PETRI_PLACES=600, PETRI_TRANSITIONS=640} [2022-11-16 12:50:25,622 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 14 predicate places. [2022-11-16 12:50:25,622 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 640 transitions, 1515 flow [2022-11-16 12:50:25,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 605.6666666666666) internal successors, (7268), 12 states have internal predecessors, (7268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:25,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:25,642 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:25,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:25,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:25,851 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:25,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1097634609, now seen corresponding path program 1 times [2022-11-16 12:50:25,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:25,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502397243] [2022-11-16 12:50:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:25,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:26,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502397243] [2022-11-16 12:50:26,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502397243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:26,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954887037] [2022-11-16 12:50:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:26,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:26,087 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:26,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:50:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:26,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:50:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:26,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:50:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954887037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:50:26,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:50:26,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328708872] [2022-11-16 12:50:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:26,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:26,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:26,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:26,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:26,391 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 603 out of 659 [2022-11-16 12:50:26,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 640 transitions, 1515 flow. Second operand has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:26,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:26,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 603 of 659 [2022-11-16 12:50:26,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:27,758 INFO L130 PetriNetUnfolder]: 176/2618 cut-off events. [2022-11-16 12:50:27,759 INFO L131 PetriNetUnfolder]: For 126/131 co-relation queries the response was YES. [2022-11-16 12:50:27,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 2618 events. 176/2618 cut-off events. For 126/131 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20154 event pairs, 0 based on Foata normal form. 8/2186 useless extension candidates. Maximal degree in co-relation 2249. Up to 44 conditions per place. [2022-11-16 12:50:27,836 INFO L137 encePairwiseOnDemand]: 648/659 looper letters, 39 selfloop transitions, 27 changer transitions 0/645 dead transitions. [2022-11-16 12:50:27,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 645 transitions, 1626 flow [2022-11-16 12:50:27,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:27,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:27,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4268 transitions. [2022-11-16 12:50:27,845 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9252113592022545 [2022-11-16 12:50:27,845 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4268 transitions. [2022-11-16 12:50:27,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4268 transitions. [2022-11-16 12:50:27,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:27,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4268 transitions. [2022-11-16 12:50:27,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 609.7142857142857) internal successors, (4268), 7 states have internal predecessors, (4268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:27,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:27,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:27,867 INFO L175 Difference]: Start difference. First operand has 600 places, 640 transitions, 1515 flow. Second operand 7 states and 4268 transitions. [2022-11-16 12:50:27,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 645 transitions, 1626 flow [2022-11-16 12:50:27,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 645 transitions, 1552 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:50:27,892 INFO L231 Difference]: Finished difference. Result has 595 places, 632 transitions, 1441 flow [2022-11-16 12:50:27,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1441, PETRI_PLACES=595, PETRI_TRANSITIONS=632} [2022-11-16 12:50:27,896 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 9 predicate places. [2022-11-16 12:50:27,897 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 632 transitions, 1441 flow [2022-11-16 12:50:27,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 605.3333333333334) internal successors, (3632), 6 states have internal predecessors, (3632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:27,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:27,898 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:27,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:28,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:28,105 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:28,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:28,106 INFO L85 PathProgramCache]: Analyzing trace with hash -763580805, now seen corresponding path program 2 times [2022-11-16 12:50:28,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:28,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631713284] [2022-11-16 12:50:28,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:28,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:28,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:28,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631713284] [2022-11-16 12:50:28,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631713284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:28,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632210977] [2022-11-16 12:50:28,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:50:28,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:28,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:28,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:28,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:50:28,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:50:28,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:50:28,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:50:28,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:50:28,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:50:28,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632210977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:28,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:50:28,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 12:50:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66300069] [2022-11-16 12:50:28,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:28,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:50:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:50:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:50:28,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-16 12:50:28,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 632 transitions, 1441 flow. Second operand has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:28,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:28,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-16 12:50:28,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:30,459 INFO L130 PetriNetUnfolder]: 211/3108 cut-off events. [2022-11-16 12:50:30,459 INFO L131 PetriNetUnfolder]: For 114/120 co-relation queries the response was YES. [2022-11-16 12:50:30,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 3108 events. 211/3108 cut-off events. For 114/120 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 25045 event pairs, 0 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 2514. Up to 14 conditions per place. [2022-11-16 12:50:30,563 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 81 selfloop transitions, 43 changer transitions 0/695 dead transitions. [2022-11-16 12:50:30,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 695 transitions, 1840 flow [2022-11-16 12:50:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:50:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:50:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12026 transitions. [2022-11-16 12:50:30,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9124430955993931 [2022-11-16 12:50:30,594 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12026 transitions. [2022-11-16 12:50:30,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12026 transitions. [2022-11-16 12:50:30,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:30,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12026 transitions. [2022-11-16 12:50:30,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 601.3) internal successors, (12026), 20 states have internal predecessors, (12026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:30,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:30,668 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:30,669 INFO L175 Difference]: Start difference. First operand has 595 places, 632 transitions, 1441 flow. Second operand 20 states and 12026 transitions. [2022-11-16 12:50:30,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 695 transitions, 1840 flow [2022-11-16 12:50:30,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 695 transitions, 1787 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:50:30,688 INFO L231 Difference]: Finished difference. Result has 604 places, 635 transitions, 1487 flow [2022-11-16 12:50:30,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=584, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1487, PETRI_PLACES=604, PETRI_TRANSITIONS=635} [2022-11-16 12:50:30,690 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 18 predicate places. [2022-11-16 12:50:30,690 INFO L495 AbstractCegarLoop]: Abstraction has has 604 places, 635 transitions, 1487 flow [2022-11-16 12:50:30,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 598.8333333333334) internal successors, (10779), 18 states have internal predecessors, (10779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:30,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:30,694 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:30,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:50:30,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:30,901 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:30,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:30,901 INFO L85 PathProgramCache]: Analyzing trace with hash -30316929, now seen corresponding path program 1 times [2022-11-16 12:50:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:30,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436411003] [2022-11-16 12:50:30,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:50:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:31,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436411003] [2022-11-16 12:50:31,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436411003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:31,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:31,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:31,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655092789] [2022-11-16 12:50:31,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:31,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:50:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:31,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:50:31,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:50:31,086 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 605 out of 659 [2022-11-16 12:50:31,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 635 transitions, 1487 flow. Second operand has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:31,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:31,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 605 of 659 [2022-11-16 12:50:31,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:32,027 INFO L130 PetriNetUnfolder]: 176/2620 cut-off events. [2022-11-16 12:50:32,027 INFO L131 PetriNetUnfolder]: For 148/153 co-relation queries the response was YES. [2022-11-16 12:50:32,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2838 conditions, 2620 events. 176/2620 cut-off events. For 148/153 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20022 event pairs, 0 based on Foata normal form. 2/2192 useless extension candidates. Maximal degree in co-relation 503. Up to 72 conditions per place. [2022-11-16 12:50:32,099 INFO L137 encePairwiseOnDemand]: 649/659 looper letters, 39 selfloop transitions, 12 changer transitions 0/638 dead transitions. [2022-11-16 12:50:32,100 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 638 transitions, 1594 flow [2022-11-16 12:50:32,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:50:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:50:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3060 transitions. [2022-11-16 12:50:32,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.928679817905918 [2022-11-16 12:50:32,109 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3060 transitions. [2022-11-16 12:50:32,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3060 transitions. [2022-11-16 12:50:32,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:32,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3060 transitions. [2022-11-16 12:50:32,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 612.0) internal successors, (3060), 5 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:32,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:32,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:32,136 INFO L175 Difference]: Start difference. First operand has 604 places, 635 transitions, 1487 flow. Second operand 5 states and 3060 transitions. [2022-11-16 12:50:32,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 638 transitions, 1594 flow [2022-11-16 12:50:32,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 638 transitions, 1503 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-16 12:50:32,156 INFO L231 Difference]: Finished difference. Result has 594 places, 634 transitions, 1421 flow [2022-11-16 12:50:32,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=594, PETRI_TRANSITIONS=634} [2022-11-16 12:50:32,160 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 8 predicate places. [2022-11-16 12:50:32,160 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 634 transitions, 1421 flow [2022-11-16 12:50:32,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:32,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:32,162 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:32,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:50:32,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:32,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1243862927, now seen corresponding path program 1 times [2022-11-16 12:50:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:32,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292996205] [2022-11-16 12:50:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:32,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:50:32,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:32,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292996205] [2022-11-16 12:50:32,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292996205] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:32,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839842221] [2022-11-16 12:50:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:32,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:32,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:32,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:32,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:50:32,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:32,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:50:32,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:32,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:50:32,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:32,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:50:32,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839842221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:32,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:50:32,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:50:32,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623313676] [2022-11-16 12:50:32,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:32,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:50:32,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:50:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:50:32,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-16 12:50:32,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 634 transitions, 1421 flow. Second operand has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:32,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:32,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-16 12:50:32,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:33,609 INFO L130 PetriNetUnfolder]: 106/1644 cut-off events. [2022-11-16 12:50:33,610 INFO L131 PetriNetUnfolder]: For 44/47 co-relation queries the response was YES. [2022-11-16 12:50:33,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1847 conditions, 1644 events. 106/1644 cut-off events. For 44/47 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10461 event pairs, 0 based on Foata normal form. 4/1390 useless extension candidates. Maximal degree in co-relation 1547. Up to 36 conditions per place. [2022-11-16 12:50:33,661 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 49 selfloop transitions, 30 changer transitions 0/650 dead transitions. [2022-11-16 12:50:33,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 650 transitions, 1621 flow [2022-11-16 12:50:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:50:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:50:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 6610 transitions. [2022-11-16 12:50:33,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9118499103324597 [2022-11-16 12:50:33,675 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 6610 transitions. [2022-11-16 12:50:33,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 6610 transitions. [2022-11-16 12:50:33,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:33,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 6610 transitions. [2022-11-16 12:50:33,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 600.9090909090909) internal successors, (6610), 11 states have internal predecessors, (6610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:33,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:33,702 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 659.0) internal successors, (7908), 12 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:33,702 INFO L175 Difference]: Start difference. First operand has 594 places, 634 transitions, 1421 flow. Second operand 11 states and 6610 transitions. [2022-11-16 12:50:33,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 650 transitions, 1621 flow [2022-11-16 12:50:33,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 650 transitions, 1601 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:33,715 INFO L231 Difference]: Finished difference. Result has 603 places, 634 transitions, 1500 flow [2022-11-16 12:50:33,716 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1500, PETRI_PLACES=603, PETRI_TRANSITIONS=634} [2022-11-16 12:50:33,717 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 17 predicate places. [2022-11-16 12:50:33,717 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 634 transitions, 1500 flow [2022-11-16 12:50:33,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 598.4666666666667) internal successors, (8977), 15 states have internal predecessors, (8977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:33,721 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:33,721 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:33,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:50:33,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:33,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:33,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:33,928 INFO L85 PathProgramCache]: Analyzing trace with hash -872660395, now seen corresponding path program 2 times [2022-11-16 12:50:33,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:33,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425489750] [2022-11-16 12:50:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:33,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:34,302 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 12:50:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425489750] [2022-11-16 12:50:34,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425489750] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:34,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188300460] [2022-11-16 12:50:34,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:50:34,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:34,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:34,305 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:34,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:50:34,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:50:34,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:50:34,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:50:34,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:50:34,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:50:34,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188300460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:34,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:50:34,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 15 [2022-11-16 12:50:34,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651098454] [2022-11-16 12:50:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:34,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:34,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:50:34,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:34,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 634 transitions, 1500 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:34,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:34,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:36,214 INFO L130 PetriNetUnfolder]: 532/4842 cut-off events. [2022-11-16 12:50:36,214 INFO L131 PetriNetUnfolder]: For 106/109 co-relation queries the response was YES. [2022-11-16 12:50:36,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 4842 events. 532/4842 cut-off events. For 106/109 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 48355 event pairs, 87 based on Foata normal form. 0/4035 useless extension candidates. Maximal degree in co-relation 1833. Up to 252 conditions per place. [2022-11-16 12:50:36,278 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 54 selfloop transitions, 7 changer transitions 0/646 dead transitions. [2022-11-16 12:50:36,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 646 transitions, 1651 flow [2022-11-16 12:50:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:36,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:36,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4129 transitions. [2022-11-16 12:50:36,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8950791242141773 [2022-11-16 12:50:36,290 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4129 transitions. [2022-11-16 12:50:36,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4129 transitions. [2022-11-16 12:50:36,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:36,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4129 transitions. [2022-11-16 12:50:36,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.8571428571429) internal successors, (4129), 7 states have internal predecessors, (4129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:36,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:36,314 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:36,315 INFO L175 Difference]: Start difference. First operand has 603 places, 634 transitions, 1500 flow. Second operand 7 states and 4129 transitions. [2022-11-16 12:50:36,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 646 transitions, 1651 flow [2022-11-16 12:50:36,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 646 transitions, 1604 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-16 12:50:36,333 INFO L231 Difference]: Finished difference. Result has 599 places, 633 transitions, 1465 flow [2022-11-16 12:50:36,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1451, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1465, PETRI_PLACES=599, PETRI_TRANSITIONS=633} [2022-11-16 12:50:36,335 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-16 12:50:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 633 transitions, 1465 flow [2022-11-16 12:50:36,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:36,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:36,337 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:36,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:50:36,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:36,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:36,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1282666791, now seen corresponding path program 1 times [2022-11-16 12:50:36,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:36,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454930249] [2022-11-16 12:50:36,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:36,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:50:36,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:36,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454930249] [2022-11-16 12:50:36,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454930249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:36,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:36,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:36,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819327378] [2022-11-16 12:50:36,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:36,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:36,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 633 transitions, 1465 flow. Second operand has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:36,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:36,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:36,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:38,418 INFO L130 PetriNetUnfolder]: 505/5493 cut-off events. [2022-11-16 12:50:38,419 INFO L131 PetriNetUnfolder]: For 91/94 co-relation queries the response was YES. [2022-11-16 12:50:38,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6441 conditions, 5493 events. 505/5493 cut-off events. For 91/94 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 56035 event pairs, 90 based on Foata normal form. 12/4611 useless extension candidates. Maximal degree in co-relation 3716. Up to 295 conditions per place. [2022-11-16 12:50:38,487 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 59 selfloop transitions, 8 changer transitions 0/652 dead transitions. [2022-11-16 12:50:38,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 652 transitions, 1638 flow [2022-11-16 12:50:38,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:38,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:38,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2395 transitions. [2022-11-16 12:50:38,492 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9085735963581184 [2022-11-16 12:50:38,492 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2395 transitions. [2022-11-16 12:50:38,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2395 transitions. [2022-11-16 12:50:38,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:38,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2395 transitions. [2022-11-16 12:50:38,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.75) internal successors, (2395), 4 states have internal predecessors, (2395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:38,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:38,506 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:38,506 INFO L175 Difference]: Start difference. First operand has 599 places, 633 transitions, 1465 flow. Second operand 4 states and 2395 transitions. [2022-11-16 12:50:38,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 652 transitions, 1638 flow [2022-11-16 12:50:38,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 652 transitions, 1628 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:38,521 INFO L231 Difference]: Finished difference. Result has 599 places, 635 transitions, 1501 flow [2022-11-16 12:50:38,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1501, PETRI_PLACES=599, PETRI_TRANSITIONS=635} [2022-11-16 12:50:38,523 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 13 predicate places. [2022-11-16 12:50:38,523 INFO L495 AbstractCegarLoop]: Abstraction has has 599 places, 635 transitions, 1501 flow [2022-11-16 12:50:38,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 582.75) internal successors, (2331), 4 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:38,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:38,524 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:38,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:50:38,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:38,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:38,525 INFO L85 PathProgramCache]: Analyzing trace with hash 305640406, now seen corresponding path program 1 times [2022-11-16 12:50:38,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:38,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73842156] [2022-11-16 12:50:38,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:38,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:38,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 12:50:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73842156] [2022-11-16 12:50:38,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73842156] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596549699] [2022-11-16 12:50:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:38,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:38,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:50:38,822 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:50:38,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:50:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:50:38,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:39,262 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 12:50:39,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-16 12:50:39,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596549699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:50:39,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:50:39,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:50:39,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650134069] [2022-11-16 12:50:39,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:39,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:50:39,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:39,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:50:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:50:39,460 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 659 [2022-11-16 12:50:39,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 599 places, 635 transitions, 1501 flow. Second operand has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:39,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:39,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 659 [2022-11-16 12:50:39,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:40,006 INFO L130 PetriNetUnfolder]: 34/776 cut-off events. [2022-11-16 12:50:40,006 INFO L131 PetriNetUnfolder]: For 80/85 co-relation queries the response was YES. [2022-11-16 12:50:40,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 776 events. 34/776 cut-off events. For 80/85 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3097 event pairs, 0 based on Foata normal form. 4/688 useless extension candidates. Maximal degree in co-relation 859. Up to 20 conditions per place. [2022-11-16 12:50:40,020 INFO L137 encePairwiseOnDemand]: 643/659 looper letters, 55 selfloop transitions, 34 changer transitions 0/661 dead transitions. [2022-11-16 12:50:40,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 661 transitions, 1753 flow [2022-11-16 12:50:40,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:50:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:50:40,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10208 transitions. [2022-11-16 12:50:40,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911184504150674 [2022-11-16 12:50:40,035 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 10208 transitions. [2022-11-16 12:50:40,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 10208 transitions. [2022-11-16 12:50:40,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:40,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 10208 transitions. [2022-11-16 12:50:40,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 600.4705882352941) internal successors, (10208), 17 states have internal predecessors, (10208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,080 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 659.0) internal successors, (11862), 18 states have internal predecessors, (11862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,081 INFO L175 Difference]: Start difference. First operand has 599 places, 635 transitions, 1501 flow. Second operand 17 states and 10208 transitions. [2022-11-16 12:50:40,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 661 transitions, 1753 flow [2022-11-16 12:50:40,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 661 transitions, 1753 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:50:40,094 INFO L231 Difference]: Finished difference. Result has 617 places, 633 transitions, 1575 flow [2022-11-16 12:50:40,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1575, PETRI_PLACES=617, PETRI_TRANSITIONS=633} [2022-11-16 12:50:40,096 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 31 predicate places. [2022-11-16 12:50:40,096 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 633 transitions, 1575 flow [2022-11-16 12:50:40,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 598.6818181818181) internal successors, (13171), 22 states have internal predecessors, (13171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,100 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:40,101 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:40,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:50:40,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:50:40,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:40,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:40,307 INFO L85 PathProgramCache]: Analyzing trace with hash -556229958, now seen corresponding path program 2 times [2022-11-16 12:50:40,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:40,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658340657] [2022-11-16 12:50:40,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:40,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658340657] [2022-11-16 12:50:40,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658340657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:40,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:40,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:40,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464323391] [2022-11-16 12:50:40,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:40,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:40,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:40,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:40,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:40,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 633 transitions, 1575 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:40,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:40,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:40,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:41,209 INFO L130 PetriNetUnfolder]: 309/1940 cut-off events. [2022-11-16 12:50:41,209 INFO L131 PetriNetUnfolder]: For 316/321 co-relation queries the response was YES. [2022-11-16 12:50:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2694 conditions, 1940 events. 309/1940 cut-off events. For 316/321 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16553 event pairs, 85 based on Foata normal form. 0/1558 useless extension candidates. Maximal degree in co-relation 2351. Up to 210 conditions per place. [2022-11-16 12:50:41,241 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 7 changer transitions 0/643 dead transitions. [2022-11-16 12:50:41,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 643 transitions, 1716 flow [2022-11-16 12:50:41,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:41,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4127 transitions. [2022-11-16 12:50:41,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946455668762194 [2022-11-16 12:50:41,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4127 transitions. [2022-11-16 12:50:41,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4127 transitions. [2022-11-16 12:50:41,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:41,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4127 transitions. [2022-11-16 12:50:41,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.5714285714286) internal successors, (4127), 7 states have internal predecessors, (4127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,275 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,276 INFO L175 Difference]: Start difference. First operand has 617 places, 633 transitions, 1575 flow. Second operand 7 states and 4127 transitions. [2022-11-16 12:50:41,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 643 transitions, 1716 flow [2022-11-16 12:50:41,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 643 transitions, 1648 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 12:50:41,289 INFO L231 Difference]: Finished difference. Result has 606 places, 632 transitions, 1519 flow [2022-11-16 12:50:41,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1519, PETRI_PLACES=606, PETRI_TRANSITIONS=632} [2022-11-16 12:50:41,292 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-16 12:50:41,292 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 632 transitions, 1519 flow [2022-11-16 12:50:41,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:41,294 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:41,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:50:41,294 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:41,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:41,295 INFO L85 PathProgramCache]: Analyzing trace with hash -63257599, now seen corresponding path program 1 times [2022-11-16 12:50:41,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811217616] [2022-11-16 12:50:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:41,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:41,452 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:41,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:41,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811217616] [2022-11-16 12:50:41,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811217616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:41,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:41,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:41,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687095839] [2022-11-16 12:50:41,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:41,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:41,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:41,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:41,457 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:41,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 632 transitions, 1519 flow. Second operand has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:41,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:41,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:41,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:42,263 INFO L130 PetriNetUnfolder]: 362/2138 cut-off events. [2022-11-16 12:50:42,263 INFO L131 PetriNetUnfolder]: For 403/408 co-relation queries the response was YES. [2022-11-16 12:50:42,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3022 conditions, 2138 events. 362/2138 cut-off events. For 403/408 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 19618 event pairs, 150 based on Foata normal form. 12/1659 useless extension candidates. Maximal degree in co-relation 2714. Up to 344 conditions per place. [2022-11-16 12:50:42,302 INFO L137 encePairwiseOnDemand]: 647/659 looper letters, 58 selfloop transitions, 8 changer transitions 0/650 dead transitions. [2022-11-16 12:50:42,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 650 transitions, 1687 flow [2022-11-16 12:50:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2394 transitions. [2022-11-16 12:50:42,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081942336874052 [2022-11-16 12:50:42,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2394 transitions. [2022-11-16 12:50:42,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2394 transitions. [2022-11-16 12:50:42,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:42,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2394 transitions. [2022-11-16 12:50:42,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 598.5) internal successors, (2394), 4 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:42,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:42,328 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:42,329 INFO L175 Difference]: Start difference. First operand has 606 places, 632 transitions, 1519 flow. Second operand 4 states and 2394 transitions. [2022-11-16 12:50:42,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 650 transitions, 1687 flow [2022-11-16 12:50:42,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 650 transitions, 1677 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:42,342 INFO L231 Difference]: Finished difference. Result has 606 places, 634 transitions, 1555 flow [2022-11-16 12:50:42,343 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1555, PETRI_PLACES=606, PETRI_TRANSITIONS=634} [2022-11-16 12:50:42,344 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 20 predicate places. [2022-11-16 12:50:42,344 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 634 transitions, 1555 flow [2022-11-16 12:50:42,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.0) internal successors, (2332), 4 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:42,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:42,345 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:50:42,345 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1584135510, now seen corresponding path program 1 times [2022-11-16 12:50:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224914519] [2022-11-16 12:50:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:42,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:42,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:42,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224914519] [2022-11-16 12:50:42,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224914519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:42,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:42,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039995888] [2022-11-16 12:50:42,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:42,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:42,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:42,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:42,515 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 634 transitions, 1555 flow. Second operand has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:42,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:42,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:42,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:43,146 INFO L130 PetriNetUnfolder]: 153/2434 cut-off events. [2022-11-16 12:50:43,146 INFO L131 PetriNetUnfolder]: For 139/140 co-relation queries the response was YES. [2022-11-16 12:50:43,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 2434 events. 153/2434 cut-off events. For 139/140 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 19421 event pairs, 24 based on Foata normal form. 4/2116 useless extension candidates. Maximal degree in co-relation 2677. Up to 95 conditions per place. [2022-11-16 12:50:43,172 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 59 selfloop transitions, 6 changer transitions 0/649 dead transitions. [2022-11-16 12:50:43,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 649 transitions, 1710 flow [2022-11-16 12:50:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2391 transitions. [2022-11-16 12:50:43,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9070561456752656 [2022-11-16 12:50:43,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2391 transitions. [2022-11-16 12:50:43,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2391 transitions. [2022-11-16 12:50:43,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:43,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2391 transitions. [2022-11-16 12:50:43,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.75) internal successors, (2391), 4 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:43,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:43,185 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:43,185 INFO L175 Difference]: Start difference. First operand has 606 places, 634 transitions, 1555 flow. Second operand 4 states and 2391 transitions. [2022-11-16 12:50:43,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 649 transitions, 1710 flow [2022-11-16 12:50:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 649 transitions, 1706 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:43,199 INFO L231 Difference]: Finished difference. Result has 608 places, 632 transitions, 1551 flow [2022-11-16 12:50:43,200 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1551, PETRI_PLACES=608, PETRI_TRANSITIONS=632} [2022-11-16 12:50:43,200 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-16 12:50:43,201 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 632 transitions, 1551 flow [2022-11-16 12:50:43,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.25) internal successors, (2333), 4 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:43,201 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:43,202 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:43,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:50:43,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 305374408, now seen corresponding path program 1 times [2022-11-16 12:50:43,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845845812] [2022-11-16 12:50:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:43,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:43,390 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:43,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:43,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845845812] [2022-11-16 12:50:43,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845845812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:43,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:43,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:43,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361064713] [2022-11-16 12:50:43,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:43,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:43,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:43,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:43,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:43,395 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:43,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 632 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:43,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:43,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:43,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:44,091 INFO L130 PetriNetUnfolder]: 196/2450 cut-off events. [2022-11-16 12:50:44,091 INFO L131 PetriNetUnfolder]: For 125/126 co-relation queries the response was YES. [2022-11-16 12:50:44,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3123 conditions, 2450 events. 196/2450 cut-off events. For 125/126 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21747 event pairs, 43 based on Foata normal form. 0/2132 useless extension candidates. Maximal degree in co-relation 2811. Up to 144 conditions per place. [2022-11-16 12:50:44,126 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-16 12:50:44,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 644 transitions, 1696 flow [2022-11-16 12:50:44,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:44,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4126 transitions. [2022-11-16 12:50:44,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8944287882072404 [2022-11-16 12:50:44,130 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4126 transitions. [2022-11-16 12:50:44,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4126 transitions. [2022-11-16 12:50:44,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:44,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4126 transitions. [2022-11-16 12:50:44,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.4285714285714) internal successors, (4126), 7 states have internal predecessors, (4126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:44,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:44,144 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:44,144 INFO L175 Difference]: Start difference. First operand has 608 places, 632 transitions, 1551 flow. Second operand 7 states and 4126 transitions. [2022-11-16 12:50:44,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 644 transitions, 1696 flow [2022-11-16 12:50:44,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 644 transitions, 1686 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:50:44,160 INFO L231 Difference]: Finished difference. Result has 611 places, 631 transitions, 1551 flow [2022-11-16 12:50:44,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=611, PETRI_TRANSITIONS=631} [2022-11-16 12:50:44,161 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 25 predicate places. [2022-11-16 12:50:44,162 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 631 transitions, 1551 flow [2022-11-16 12:50:44,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 582.8333333333334) internal successors, (3497), 6 states have internal predecessors, (3497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:44,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:44,163 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:44,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:50:44,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1863558828, now seen corresponding path program 1 times [2022-11-16 12:50:44,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:44,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026736255] [2022-11-16 12:50:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:44,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:44,366 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:44,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:44,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026736255] [2022-11-16 12:50:44,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026736255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:44,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:44,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126159044] [2022-11-16 12:50:44,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:44,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:44,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:44,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:44,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 631 transitions, 1551 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:44,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:44,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:44,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:45,075 INFO L130 PetriNetUnfolder]: 194/2445 cut-off events. [2022-11-16 12:50:45,075 INFO L131 PetriNetUnfolder]: For 129/130 co-relation queries the response was YES. [2022-11-16 12:50:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 2445 events. 194/2445 cut-off events. For 129/130 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 20547 event pairs, 60 based on Foata normal form. 0/2137 useless extension candidates. Maximal degree in co-relation 2797. Up to 158 conditions per place. [2022-11-16 12:50:45,099 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 45 selfloop transitions, 6 changer transitions 0/637 dead transitions. [2022-11-16 12:50:45,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 637 transitions, 1669 flow [2022-11-16 12:50:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:45,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4119 transitions. [2022-11-16 12:50:45,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8929113375243876 [2022-11-16 12:50:45,103 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4119 transitions. [2022-11-16 12:50:45,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4119 transitions. [2022-11-16 12:50:45,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:45,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4119 transitions. [2022-11-16 12:50:45,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.4285714285714) internal successors, (4119), 7 states have internal predecessors, (4119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,115 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,116 INFO L175 Difference]: Start difference. First operand has 611 places, 631 transitions, 1551 flow. Second operand 7 states and 4119 transitions. [2022-11-16 12:50:45,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 637 transitions, 1669 flow [2022-11-16 12:50:45,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 637 transitions, 1659 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:45,128 INFO L231 Difference]: Finished difference. Result has 612 places, 630 transitions, 1551 flow [2022-11-16 12:50:45,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1551, PETRI_PLACES=612, PETRI_TRANSITIONS=630} [2022-11-16 12:50:45,130 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-16 12:50:45,130 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 630 transitions, 1551 flow [2022-11-16 12:50:45,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:45,131 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:45,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:50:45,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash 933455099, now seen corresponding path program 1 times [2022-11-16 12:50:45,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:45,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467846381] [2022-11-16 12:50:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:45,331 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:45,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467846381] [2022-11-16 12:50:45,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467846381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:45,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:45,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825023213] [2022-11-16 12:50:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:45,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:45,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:45,336 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:45,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 630 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:45,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:45,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:45,941 INFO L130 PetriNetUnfolder]: 161/2487 cut-off events. [2022-11-16 12:50:45,941 INFO L131 PetriNetUnfolder]: For 106/107 co-relation queries the response was YES. [2022-11-16 12:50:45,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3082 conditions, 2487 events. 161/2487 cut-off events. For 106/107 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 20091 event pairs, 36 based on Foata normal form. 4/2167 useless extension candidates. Maximal degree in co-relation 2772. Up to 116 conditions per place. [2022-11-16 12:50:45,968 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 53 selfloop transitions, 6 changer transitions 0/645 dead transitions. [2022-11-16 12:50:45,969 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 645 transitions, 1696 flow [2022-11-16 12:50:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2385 transitions. [2022-11-16 12:50:45,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9047799696509864 [2022-11-16 12:50:45,973 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2385 transitions. [2022-11-16 12:50:45,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2385 transitions. [2022-11-16 12:50:45,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:45,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2385 transitions. [2022-11-16 12:50:45,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.25) internal successors, (2385), 4 states have internal predecessors, (2385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,980 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,980 INFO L175 Difference]: Start difference. First operand has 612 places, 630 transitions, 1551 flow. Second operand 4 states and 2385 transitions. [2022-11-16 12:50:45,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 645 transitions, 1696 flow [2022-11-16 12:50:45,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 645 transitions, 1683 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:50:45,994 INFO L231 Difference]: Finished difference. Result has 608 places, 630 transitions, 1554 flow [2022-11-16 12:50:45,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1554, PETRI_PLACES=608, PETRI_TRANSITIONS=630} [2022-11-16 12:50:45,996 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 22 predicate places. [2022-11-16 12:50:45,996 INFO L495 AbstractCegarLoop]: Abstraction has has 608 places, 630 transitions, 1554 flow [2022-11-16 12:50:45,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:45,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:45,997 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:45,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:50:45,998 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1211939284, now seen corresponding path program 1 times [2022-11-16 12:50:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:45,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455442910] [2022-11-16 12:50:45,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:45,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:46,171 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:46,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:46,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455442910] [2022-11-16 12:50:46,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455442910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:46,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:46,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:46,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772755361] [2022-11-16 12:50:46,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:46,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:46,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:46,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:46,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:46,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:46,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 630 transitions, 1554 flow. Second operand has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:46,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:46,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:46,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:47,104 INFO L130 PetriNetUnfolder]: 518/3266 cut-off events. [2022-11-16 12:50:47,104 INFO L131 PetriNetUnfolder]: For 604/611 co-relation queries the response was YES. [2022-11-16 12:50:47,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4674 conditions, 3266 events. 518/3266 cut-off events. For 604/611 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 34653 event pairs, 161 based on Foata normal form. 0/2632 useless extension candidates. Maximal degree in co-relation 4361. Up to 468 conditions per place. [2022-11-16 12:50:47,132 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/640 dead transitions. [2022-11-16 12:50:47,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 640 transitions, 1693 flow [2022-11-16 12:50:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:47,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4124 transitions. [2022-11-16 12:50:47,139 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8939952308692825 [2022-11-16 12:50:47,140 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4124 transitions. [2022-11-16 12:50:47,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4124 transitions. [2022-11-16 12:50:47,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:47,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4124 transitions. [2022-11-16 12:50:47,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 589.1428571428571) internal successors, (4124), 7 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:47,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:47,160 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:47,161 INFO L175 Difference]: Start difference. First operand has 608 places, 630 transitions, 1554 flow. Second operand 7 states and 4124 transitions. [2022-11-16 12:50:47,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 640 transitions, 1693 flow [2022-11-16 12:50:47,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 640 transitions, 1689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:50:47,178 INFO L231 Difference]: Finished difference. Result has 612 places, 629 transitions, 1560 flow [2022-11-16 12:50:47,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1560, PETRI_PLACES=612, PETRI_TRANSITIONS=629} [2022-11-16 12:50:47,180 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 26 predicate places. [2022-11-16 12:50:47,180 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 629 transitions, 1560 flow [2022-11-16 12:50:47,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.0) internal successors, (3498), 6 states have internal predecessors, (3498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:47,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:47,182 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:47,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:50:47,182 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:47,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -677570634, now seen corresponding path program 1 times [2022-11-16 12:50:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:47,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846746081] [2022-11-16 12:50:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:47,342 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:47,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:47,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846746081] [2022-11-16 12:50:47,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846746081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:47,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:47,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:47,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806376648] [2022-11-16 12:50:47,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:47,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:47,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:47,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:47,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 629 transitions, 1560 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:47,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:47,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:48,309 INFO L130 PetriNetUnfolder]: 500/2879 cut-off events. [2022-11-16 12:50:48,309 INFO L131 PetriNetUnfolder]: For 730/737 co-relation queries the response was YES. [2022-11-16 12:50:48,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4254 conditions, 2879 events. 500/2879 cut-off events. For 730/737 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 29673 event pairs, 168 based on Foata normal form. 16/2205 useless extension candidates. Maximal degree in co-relation 3943. Up to 540 conditions per place. [2022-11-16 12:50:48,340 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 57 selfloop transitions, 6 changer transitions 0/643 dead transitions. [2022-11-16 12:50:48,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 643 transitions, 1708 flow [2022-11-16 12:50:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:48,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:48,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2389 transitions. [2022-11-16 12:50:48,344 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9062974203338392 [2022-11-16 12:50:48,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2389 transitions. [2022-11-16 12:50:48,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2389 transitions. [2022-11-16 12:50:48,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:48,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2389 transitions. [2022-11-16 12:50:48,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 597.25) internal successors, (2389), 4 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:48,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:48,352 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:48,352 INFO L175 Difference]: Start difference. First operand has 612 places, 629 transitions, 1560 flow. Second operand 4 states and 2389 transitions. [2022-11-16 12:50:48,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 643 transitions, 1708 flow [2022-11-16 12:50:48,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 643 transitions, 1694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:50:48,368 INFO L231 Difference]: Finished difference. Result has 610 places, 627 transitions, 1546 flow [2022-11-16 12:50:48,369 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1546, PETRI_PLACES=610, PETRI_TRANSITIONS=627} [2022-11-16 12:50:48,369 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 24 predicate places. [2022-11-16 12:50:48,370 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 627 transitions, 1546 flow [2022-11-16 12:50:48,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:48,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:48,371 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:50:48,371 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1290773533, now seen corresponding path program 1 times [2022-11-16 12:50:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:48,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243630223] [2022-11-16 12:50:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:48,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:48,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243630223] [2022-11-16 12:50:48,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243630223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:48,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:48,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:50:48,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244072666] [2022-11-16 12:50:48,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:48,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:50:48,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:48,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:50:48,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:48,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:50:48,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 627 transitions, 1546 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:48,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:48,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:50:48,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:49,434 INFO L130 PetriNetUnfolder]: 203/2223 cut-off events. [2022-11-16 12:50:49,434 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-16 12:50:49,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 2223 events. 203/2223 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18582 event pairs, 41 based on Foata normal form. 0/1975 useless extension candidates. Maximal degree in co-relation 2707. Up to 109 conditions per place. [2022-11-16 12:50:49,461 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 59 selfloop transitions, 12 changer transitions 0/644 dead transitions. [2022-11-16 12:50:49,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 644 transitions, 1730 flow [2022-11-16 12:50:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:50:49,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:50:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-16 12:50:49,469 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-16 12:50:49,469 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-16 12:50:49,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-16 12:50:49,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:49,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-16 12:50:49,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:49,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:49,485 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:49,486 INFO L175 Difference]: Start difference. First operand has 610 places, 627 transitions, 1546 flow. Second operand 10 states and 5782 transitions. [2022-11-16 12:50:49,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 644 transitions, 1730 flow [2022-11-16 12:50:49,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 644 transitions, 1720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:50:49,501 INFO L231 Difference]: Finished difference. Result has 619 places, 628 transitions, 1572 flow [2022-11-16 12:50:49,502 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1572, PETRI_PLACES=619, PETRI_TRANSITIONS=628} [2022-11-16 12:50:49,502 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 33 predicate places. [2022-11-16 12:50:49,502 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 628 transitions, 1572 flow [2022-11-16 12:50:49,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:49,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:49,504 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:49,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:50:49,504 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:49,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash 470148789, now seen corresponding path program 1 times [2022-11-16 12:50:49,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:49,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023774703] [2022-11-16 12:50:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:49,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:49,677 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:49,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:49,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023774703] [2022-11-16 12:50:49,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023774703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:49,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:49,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:49,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381428822] [2022-11-16 12:50:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:49,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:49,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:49,683 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:49,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 628 transitions, 1572 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:49,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:49,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:49,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:50,590 INFO L130 PetriNetUnfolder]: 492/3229 cut-off events. [2022-11-16 12:50:50,590 INFO L131 PetriNetUnfolder]: For 588/613 co-relation queries the response was YES. [2022-11-16 12:50:50,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 3229 events. 492/3229 cut-off events. For 588/613 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 33354 event pairs, 225 based on Foata normal form. 0/2609 useless extension candidates. Maximal degree in co-relation 4345. Up to 491 conditions per place. [2022-11-16 12:50:50,618 INFO L137 encePairwiseOnDemand]: 652/659 looper letters, 44 selfloop transitions, 6 changer transitions 0/633 dead transitions. [2022-11-16 12:50:50,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 633 transitions, 1691 flow [2022-11-16 12:50:50,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4118 transitions. [2022-11-16 12:50:50,623 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8926945588554086 [2022-11-16 12:50:50,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4118 transitions. [2022-11-16 12:50:50,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4118 transitions. [2022-11-16 12:50:50,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:50,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4118 transitions. [2022-11-16 12:50:50,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 588.2857142857143) internal successors, (4118), 7 states have internal predecessors, (4118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,636 INFO L175 Difference]: Start difference. First operand has 619 places, 628 transitions, 1572 flow. Second operand 7 states and 4118 transitions. [2022-11-16 12:50:50,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 633 transitions, 1691 flow [2022-11-16 12:50:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 620 places, 633 transitions, 1671 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:50,650 INFO L231 Difference]: Finished difference. Result has 620 places, 627 transitions, 1568 flow [2022-11-16 12:50:50,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1556, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=621, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1568, PETRI_PLACES=620, PETRI_TRANSITIONS=627} [2022-11-16 12:50:50,651 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 34 predicate places. [2022-11-16 12:50:50,652 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 627 transitions, 1568 flow [2022-11-16 12:50:50,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:50,653 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:50:50,653 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1359272095, now seen corresponding path program 1 times [2022-11-16 12:50:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:50,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117597873] [2022-11-16 12:50:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:50,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:50,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117597873] [2022-11-16 12:50:50,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117597873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:50,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:50,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:50:50,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317706110] [2022-11-16 12:50:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:50,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:50:50,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:50:50,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:50,929 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:50:50,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 627 transitions, 1568 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:50,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:50,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:50:50,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:51,687 INFO L130 PetriNetUnfolder]: 183/2194 cut-off events. [2022-11-16 12:50:51,687 INFO L131 PetriNetUnfolder]: For 202/203 co-relation queries the response was YES. [2022-11-16 12:50:51,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3053 conditions, 2194 events. 183/2194 cut-off events. For 202/203 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18125 event pairs, 43 based on Foata normal form. 0/1955 useless extension candidates. Maximal degree in co-relation 2736. Up to 114 conditions per place. [2022-11-16 12:50:51,713 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 61 selfloop transitions, 13 changer transitions 0/646 dead transitions. [2022-11-16 12:50:51,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 646 transitions, 1781 flow [2022-11-16 12:50:51,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:50:51,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:50:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5784 transitions. [2022-11-16 12:50:51,719 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8776934749620637 [2022-11-16 12:50:51,719 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5784 transitions. [2022-11-16 12:50:51,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5784 transitions. [2022-11-16 12:50:51,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:51,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5784 transitions. [2022-11-16 12:50:51,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.4) internal successors, (5784), 10 states have internal predecessors, (5784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:51,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:51,738 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:51,738 INFO L175 Difference]: Start difference. First operand has 620 places, 627 transitions, 1568 flow. Second operand 10 states and 5784 transitions. [2022-11-16 12:50:51,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 646 transitions, 1781 flow [2022-11-16 12:50:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 646 transitions, 1759 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:51,755 INFO L231 Difference]: Finished difference. Result has 627 places, 628 transitions, 1596 flow [2022-11-16 12:50:51,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1596, PETRI_PLACES=627, PETRI_TRANSITIONS=628} [2022-11-16 12:50:51,756 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-16 12:50:51,757 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 628 transitions, 1596 flow [2022-11-16 12:50:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:51,758 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:51,758 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:50:51,759 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash -351322272, now seen corresponding path program 1 times [2022-11-16 12:50:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:51,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556955075] [2022-11-16 12:50:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:51,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:51,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:51,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556955075] [2022-11-16 12:50:51,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556955075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:51,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:51,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:51,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378192090] [2022-11-16 12:50:51,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:51,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:50:51,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:51,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:50:51,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:50:51,848 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-16 12:50:51,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 628 transitions, 1596 flow. Second operand has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:51,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:51,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-16 12:50:51,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:52,303 INFO L130 PetriNetUnfolder]: 55/1501 cut-off events. [2022-11-16 12:50:52,303 INFO L131 PetriNetUnfolder]: For 91/98 co-relation queries the response was YES. [2022-11-16 12:50:52,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 1501 events. 55/1501 cut-off events. For 91/98 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 8331 event pairs, 5 based on Foata normal form. 0/1342 useless extension candidates. Maximal degree in co-relation 1725. Up to 32 conditions per place. [2022-11-16 12:50:52,334 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/631 dead transitions. [2022-11-16 12:50:52,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 631 transitions, 1629 flow [2022-11-16 12:50:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:50:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:50:52,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-16 12:50:52,336 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-16 12:50:52,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-16 12:50:52,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-16 12:50:52,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:52,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-16 12:50:52,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:52,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:52,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:52,343 INFO L175 Difference]: Start difference. First operand has 627 places, 628 transitions, 1596 flow. Second operand 3 states and 1874 transitions. [2022-11-16 12:50:52,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 631 transitions, 1629 flow [2022-11-16 12:50:52,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 631 transitions, 1614 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:52,357 INFO L231 Difference]: Finished difference. Result has 627 places, 630 transitions, 1603 flow [2022-11-16 12:50:52,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1581, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1603, PETRI_PLACES=627, PETRI_TRANSITIONS=630} [2022-11-16 12:50:52,358 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 41 predicate places. [2022-11-16 12:50:52,358 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 630 transitions, 1603 flow [2022-11-16 12:50:52,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.3333333333334) internal successors, (1864), 3 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:52,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:52,359 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:52,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:50:52,360 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1653554108, now seen corresponding path program 1 times [2022-11-16 12:50:52,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:52,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191737079] [2022-11-16 12:50:52,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:52,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:52,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:52,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191737079] [2022-11-16 12:50:52,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191737079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:52,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:52,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:50:52,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347732720] [2022-11-16 12:50:52,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:52,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:50:52,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:52,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:50:52,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:50:52,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:52,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 630 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:52,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:52,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:52,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:53,428 INFO L130 PetriNetUnfolder]: 535/2890 cut-off events. [2022-11-16 12:50:53,429 INFO L131 PetriNetUnfolder]: For 609/616 co-relation queries the response was YES. [2022-11-16 12:50:53,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 2890 events. 535/2890 cut-off events. For 609/616 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 29973 event pairs, 252 based on Foata normal form. 16/2202 useless extension candidates. Maximal degree in co-relation 4298. Up to 550 conditions per place. [2022-11-16 12:50:53,459 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/644 dead transitions. [2022-11-16 12:50:53,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 644 transitions, 1744 flow [2022-11-16 12:50:53,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:50:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:50:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2384 transitions. [2022-11-16 12:50:53,462 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9044006069802731 [2022-11-16 12:50:53,463 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2384 transitions. [2022-11-16 12:50:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2384 transitions. [2022-11-16 12:50:53,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:53,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2384 transitions. [2022-11-16 12:50:53,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 596.0) internal successors, (2384), 4 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,471 INFO L175 Difference]: Start difference. First operand has 627 places, 630 transitions, 1603 flow. Second operand 4 states and 2384 transitions. [2022-11-16 12:50:53,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 644 transitions, 1744 flow [2022-11-16 12:50:53,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 644 transitions, 1734 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:50:53,487 INFO L231 Difference]: Finished difference. Result has 625 places, 630 transitions, 1610 flow [2022-11-16 12:50:53,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1610, PETRI_PLACES=625, PETRI_TRANSITIONS=630} [2022-11-16 12:50:53,488 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 39 predicate places. [2022-11-16 12:50:53,488 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 630 transitions, 1610 flow [2022-11-16 12:50:53,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.75) internal successors, (2335), 4 states have internal predecessors, (2335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,489 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:53,489 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:53,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:50:53,490 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:53,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -699988186, now seen corresponding path program 1 times [2022-11-16 12:50:53,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:53,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395900225] [2022-11-16 12:50:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:53,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:53,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395900225] [2022-11-16 12:50:53,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395900225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:53,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:53,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:53,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530803253] [2022-11-16 12:50:53,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:53,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:53,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:53,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:53,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:53,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-16 12:50:53,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 630 transitions, 1610 flow. Second operand has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:53,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:53,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-16 12:50:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:54,474 INFO L130 PetriNetUnfolder]: 168/1394 cut-off events. [2022-11-16 12:50:54,474 INFO L131 PetriNetUnfolder]: For 120/120 co-relation queries the response was YES. [2022-11-16 12:50:54,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1394 events. 168/1394 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 9490 event pairs, 76 based on Foata normal form. 2/1271 useless extension candidates. Maximal degree in co-relation 2110. Up to 232 conditions per place. [2022-11-16 12:50:54,503 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 84 selfloop transitions, 18 changer transitions 0/646 dead transitions. [2022-11-16 12:50:54,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 646 transitions, 1851 flow [2022-11-16 12:50:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:54,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3890 transitions. [2022-11-16 12:50:54,507 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8432690223282029 [2022-11-16 12:50:54,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3890 transitions. [2022-11-16 12:50:54,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3890 transitions. [2022-11-16 12:50:54,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:54,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3890 transitions. [2022-11-16 12:50:54,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.7142857142857) internal successors, (3890), 7 states have internal predecessors, (3890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,517 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,517 INFO L175 Difference]: Start difference. First operand has 625 places, 630 transitions, 1610 flow. Second operand 7 states and 3890 transitions. [2022-11-16 12:50:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 646 transitions, 1851 flow [2022-11-16 12:50:54,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 646 transitions, 1845 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:50:54,532 INFO L231 Difference]: Finished difference. Result has 633 places, 638 transitions, 1703 flow [2022-11-16 12:50:54,534 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1703, PETRI_PLACES=633, PETRI_TRANSITIONS=638} [2022-11-16 12:50:54,534 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 47 predicate places. [2022-11-16 12:50:54,534 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 638 transitions, 1703 flow [2022-11-16 12:50:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.0) internal successors, (3270), 6 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:54,536 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:50:54,536 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:54,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -2100442841, now seen corresponding path program 1 times [2022-11-16 12:50:54,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:54,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840477429] [2022-11-16 12:50:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:54,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:54,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840477429] [2022-11-16 12:50:54,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840477429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:54,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:54,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:54,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590977120] [2022-11-16 12:50:54,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:54,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:54,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:54,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:54,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:54,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:50:54,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 638 transitions, 1703 flow. Second operand has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:54,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:54,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:50:54,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:55,502 INFO L130 PetriNetUnfolder]: 160/2496 cut-off events. [2022-11-16 12:50:55,502 INFO L131 PetriNetUnfolder]: For 219/220 co-relation queries the response was YES. [2022-11-16 12:50:55,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3495 conditions, 2496 events. 160/2496 cut-off events. For 219/220 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 22498 event pairs, 48 based on Foata normal form. 0/2272 useless extension candidates. Maximal degree in co-relation 3407. Up to 129 conditions per place. [2022-11-16 12:50:55,520 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 43 selfloop transitions, 5 changer transitions 0/642 dead transitions. [2022-11-16 12:50:55,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 642 transitions, 1810 flow [2022-11-16 12:50:55,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:50:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:50:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-16 12:50:55,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-16 12:50:55,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-16 12:50:55,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-16 12:50:55,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:55,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-16 12:50:55,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:55,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:55,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:55,536 INFO L175 Difference]: Start difference. First operand has 633 places, 638 transitions, 1703 flow. Second operand 6 states and 3532 transitions. [2022-11-16 12:50:55,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 642 transitions, 1810 flow [2022-11-16 12:50:55,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 642 transitions, 1810 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:50:55,556 INFO L231 Difference]: Finished difference. Result has 637 places, 637 transitions, 1711 flow [2022-11-16 12:50:55,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1711, PETRI_PLACES=637, PETRI_TRANSITIONS=637} [2022-11-16 12:50:55,557 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 51 predicate places. [2022-11-16 12:50:55,557 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 637 transitions, 1711 flow [2022-11-16 12:50:55,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.1666666666666) internal successors, (3499), 6 states have internal predecessors, (3499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:55,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:55,559 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:55,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:50:55,559 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1680813831, now seen corresponding path program 1 times [2022-11-16 12:50:55,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108147639] [2022-11-16 12:50:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:55,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:55,724 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:55,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:55,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108147639] [2022-11-16 12:50:55,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108147639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:55,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:55,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:50:55,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993899977] [2022-11-16 12:50:55,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:55,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:50:55,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:55,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:50:55,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:50:55,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-16 12:50:55,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 637 transitions, 1711 flow. Second operand has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:55,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:55,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-16 12:50:55,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:57,462 INFO L130 PetriNetUnfolder]: 262/7035 cut-off events. [2022-11-16 12:50:57,462 INFO L131 PetriNetUnfolder]: For 109/116 co-relation queries the response was YES. [2022-11-16 12:50:57,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8272 conditions, 7035 events. 262/7035 cut-off events. For 109/116 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 70353 event pairs, 21 based on Foata normal form. 0/6187 useless extension candidates. Maximal degree in co-relation 8121. Up to 171 conditions per place. [2022-11-16 12:50:57,552 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 44 selfloop transitions, 4 changer transitions 0/657 dead transitions. [2022-11-16 12:50:57,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 657 transitions, 1849 flow [2022-11-16 12:50:57,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:50:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:50:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1858 transitions. [2022-11-16 12:50:57,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.939807789580172 [2022-11-16 12:50:57,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1858 transitions. [2022-11-16 12:50:57,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1858 transitions. [2022-11-16 12:50:57,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:57,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1858 transitions. [2022-11-16 12:50:57,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:57,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:57,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:57,558 INFO L175 Difference]: Start difference. First operand has 637 places, 637 transitions, 1711 flow. Second operand 3 states and 1858 transitions. [2022-11-16 12:50:57,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 657 transitions, 1849 flow [2022-11-16 12:50:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 657 transitions, 1840 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:50:57,578 INFO L231 Difference]: Finished difference. Result has 636 places, 638 transitions, 1726 flow [2022-11-16 12:50:57,579 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1726, PETRI_PLACES=636, PETRI_TRANSITIONS=638} [2022-11-16 12:50:57,579 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 50 predicate places. [2022-11-16 12:50:57,580 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 638 transitions, 1726 flow [2022-11-16 12:50:57,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.0) internal successors, (1815), 3 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:57,580 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:57,581 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:57,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:50:57,581 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:57,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash -500193102, now seen corresponding path program 1 times [2022-11-16 12:50:57,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:57,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656601748] [2022-11-16 12:50:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:57,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:57,848 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:57,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656601748] [2022-11-16 12:50:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656601748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:57,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:57,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:50:57,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693018151] [2022-11-16 12:50:57,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:57,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:50:57,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:57,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:50:57,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:50:57,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-16 12:50:57,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 638 transitions, 1726 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:57,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:57,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-16 12:50:57,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:50:58,755 INFO L130 PetriNetUnfolder]: 239/1861 cut-off events. [2022-11-16 12:50:58,755 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2022-11-16 12:50:58,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3247 conditions, 1861 events. 239/1861 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12236 event pairs, 100 based on Foata normal form. 2/1756 useless extension candidates. Maximal degree in co-relation 3071. Up to 305 conditions per place. [2022-11-16 12:50:58,792 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 103 selfloop transitions, 21 changer transitions 0/669 dead transitions. [2022-11-16 12:50:58,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 669 transitions, 2086 flow [2022-11-16 12:50:58,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:50:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:50:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3903 transitions. [2022-11-16 12:50:58,797 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8460871450249295 [2022-11-16 12:50:58,797 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3903 transitions. [2022-11-16 12:50:58,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3903 transitions. [2022-11-16 12:50:58,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:50:58,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3903 transitions. [2022-11-16 12:50:58,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.5714285714286) internal successors, (3903), 7 states have internal predecessors, (3903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:58,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:58,806 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:58,806 INFO L175 Difference]: Start difference. First operand has 636 places, 638 transitions, 1726 flow. Second operand 7 states and 3903 transitions. [2022-11-16 12:50:58,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 669 transitions, 2086 flow [2022-11-16 12:50:58,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 669 transitions, 2080 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:50:58,824 INFO L231 Difference]: Finished difference. Result has 644 places, 649 transitions, 1856 flow [2022-11-16 12:50:58,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1856, PETRI_PLACES=644, PETRI_TRANSITIONS=649} [2022-11-16 12:50:58,825 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 58 predicate places. [2022-11-16 12:50:58,826 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 649 transitions, 1856 flow [2022-11-16 12:50:58,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:58,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:50:58,827 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:58,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:50:58,827 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:50:58,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1127234916, now seen corresponding path program 1 times [2022-11-16 12:50:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:50:58,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32206995] [2022-11-16 12:50:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:58,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:50:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:59,083 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:50:59,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:50:59,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32206995] [2022-11-16 12:50:59,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32206995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:50:59,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:50:59,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:50:59,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138127066] [2022-11-16 12:50:59,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:50:59,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:50:59,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:50:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:50:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:50:59,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:50:59,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 649 transitions, 1856 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:50:59,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:50:59,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:50:59,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:00,578 INFO L130 PetriNetUnfolder]: 944/4687 cut-off events. [2022-11-16 12:51:00,578 INFO L131 PetriNetUnfolder]: For 1111/1122 co-relation queries the response was YES. [2022-11-16 12:51:00,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7522 conditions, 4687 events. 944/4687 cut-off events. For 1111/1122 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 52878 event pairs, 241 based on Foata normal form. 0/3690 useless extension candidates. Maximal degree in co-relation 7194. Up to 836 conditions per place. [2022-11-16 12:51:00,644 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 12 changer transitions 0/664 dead transitions. [2022-11-16 12:51:00,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 664 transitions, 2030 flow [2022-11-16 12:51:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:00,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5780 transitions. [2022-11-16 12:51:00,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770864946889226 [2022-11-16 12:51:00,651 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5780 transitions. [2022-11-16 12:51:00,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5780 transitions. [2022-11-16 12:51:00,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:00,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5780 transitions. [2022-11-16 12:51:00,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.0) internal successors, (5780), 10 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:00,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:00,668 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:00,668 INFO L175 Difference]: Start difference. First operand has 644 places, 649 transitions, 1856 flow. Second operand 10 states and 5780 transitions. [2022-11-16 12:51:00,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 664 transitions, 2030 flow [2022-11-16 12:51:00,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 664 transitions, 2030 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:51:00,688 INFO L231 Difference]: Finished difference. Result has 655 places, 650 transitions, 1892 flow [2022-11-16 12:51:00,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=637, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1892, PETRI_PLACES=655, PETRI_TRANSITIONS=650} [2022-11-16 12:51:00,689 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-16 12:51:00,689 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 650 transitions, 1892 flow [2022-11-16 12:51:00,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:00,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:00,691 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:51:00,692 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:00,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1592495852, now seen corresponding path program 1 times [2022-11-16 12:51:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:00,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864262153] [2022-11-16 12:51:00,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:00,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:00,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:00,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864262153] [2022-11-16 12:51:00,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864262153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:00,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:00,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:00,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72874961] [2022-11-16 12:51:00,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:00,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:51:00,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:51:00,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:51:00,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-16 12:51:00,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 650 transitions, 1892 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:00,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:00,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-16 12:51:00,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:01,712 INFO L130 PetriNetUnfolder]: 208/3549 cut-off events. [2022-11-16 12:51:01,712 INFO L131 PetriNetUnfolder]: For 251/262 co-relation queries the response was YES. [2022-11-16 12:51:01,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4542 conditions, 3549 events. 208/3549 cut-off events. For 251/262 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 26652 event pairs, 55 based on Foata normal form. 0/3124 useless extension candidates. Maximal degree in co-relation 4436. Up to 152 conditions per place. [2022-11-16 12:51:01,761 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/653 dead transitions. [2022-11-16 12:51:01,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 653 transitions, 1925 flow [2022-11-16 12:51:01,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:51:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:51:01,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-16 12:51:01,764 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-16 12:51:01,764 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-16 12:51:01,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-16 12:51:01,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:01,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-16 12:51:01,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,770 INFO L175 Difference]: Start difference. First operand has 655 places, 650 transitions, 1892 flow. Second operand 3 states and 1874 transitions. [2022-11-16 12:51:01,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 653 transitions, 1925 flow [2022-11-16 12:51:01,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 653 transitions, 1911 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-16 12:51:01,790 INFO L231 Difference]: Finished difference. Result has 655 places, 652 transitions, 1900 flow [2022-11-16 12:51:01,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1878, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1900, PETRI_PLACES=655, PETRI_TRANSITIONS=652} [2022-11-16 12:51:01,792 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 69 predicate places. [2022-11-16 12:51:01,792 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 652 transitions, 1900 flow [2022-11-16 12:51:01,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:01,793 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:01,793 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:01,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:51:01,794 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:01,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 584546029, now seen corresponding path program 1 times [2022-11-16 12:51:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:01,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884883871] [2022-11-16 12:51:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:02,062 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:02,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:02,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884883871] [2022-11-16 12:51:02,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884883871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:02,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:02,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:51:02,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283275380] [2022-11-16 12:51:02,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:02,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:51:02,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:51:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:51:02,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:51:02,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 652 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:02,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:02,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:51:02,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:03,709 INFO L130 PetriNetUnfolder]: 824/4549 cut-off events. [2022-11-16 12:51:03,709 INFO L131 PetriNetUnfolder]: For 1072/1083 co-relation queries the response was YES. [2022-11-16 12:51:03,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7377 conditions, 4549 events. 824/4549 cut-off events. For 1072/1083 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50625 event pairs, 253 based on Foata normal form. 0/3686 useless extension candidates. Maximal degree in co-relation 7233. Up to 726 conditions per place. [2022-11-16 12:51:03,752 INFO L137 encePairwiseOnDemand]: 645/659 looper letters, 59 selfloop transitions, 13 changer transitions 0/669 dead transitions. [2022-11-16 12:51:03,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 669 transitions, 2091 flow [2022-11-16 12:51:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5782 transitions. [2022-11-16 12:51:03,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8773899848254931 [2022-11-16 12:51:03,758 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5782 transitions. [2022-11-16 12:51:03,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5782 transitions. [2022-11-16 12:51:03,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:03,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5782 transitions. [2022-11-16 12:51:03,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 578.2) internal successors, (5782), 10 states have internal predecessors, (5782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:03,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:03,775 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:03,775 INFO L175 Difference]: Start difference. First operand has 655 places, 652 transitions, 1900 flow. Second operand 10 states and 5782 transitions. [2022-11-16 12:51:03,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 669 transitions, 2091 flow [2022-11-16 12:51:03,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 669 transitions, 2085 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:51:03,795 INFO L231 Difference]: Finished difference. Result has 664 places, 653 transitions, 1932 flow [2022-11-16 12:51:03,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1932, PETRI_PLACES=664, PETRI_TRANSITIONS=653} [2022-11-16 12:51:03,797 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 78 predicate places. [2022-11-16 12:51:03,797 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 653 transitions, 1932 flow [2022-11-16 12:51:03,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:03,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:03,798 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:51:03,799 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:03,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:03,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1347155757, now seen corresponding path program 1 times [2022-11-16 12:51:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056357159] [2022-11-16 12:51:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056357159] [2022-11-16 12:51:04,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056357159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:04,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:04,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:51:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510727683] [2022-11-16 12:51:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:04,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:51:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:51:04,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:51:04,036 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:51:04,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 653 transitions, 1932 flow. Second operand has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:04,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:04,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:51:04,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:05,127 INFO L130 PetriNetUnfolder]: 265/2666 cut-off events. [2022-11-16 12:51:05,127 INFO L131 PetriNetUnfolder]: For 469/471 co-relation queries the response was YES. [2022-11-16 12:51:05,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 2666 events. 265/2666 cut-off events. For 469/471 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22830 event pairs, 36 based on Foata normal form. 12/2531 useless extension candidates. Maximal degree in co-relation 4283. Up to 188 conditions per place. [2022-11-16 12:51:05,173 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 57 selfloop transitions, 13 changer transitions 0/665 dead transitions. [2022-11-16 12:51:05,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 665 transitions, 2092 flow [2022-11-16 12:51:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5778 transitions. [2022-11-16 12:51:05,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.876783004552352 [2022-11-16 12:51:05,180 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5778 transitions. [2022-11-16 12:51:05,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5778 transitions. [2022-11-16 12:51:05,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:05,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5778 transitions. [2022-11-16 12:51:05,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.8) internal successors, (5778), 10 states have internal predecessors, (5778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,197 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,197 INFO L175 Difference]: Start difference. First operand has 664 places, 653 transitions, 1932 flow. Second operand 10 states and 5778 transitions. [2022-11-16 12:51:05,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 665 transitions, 2092 flow [2022-11-16 12:51:05,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 665 transitions, 2073 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:05,219 INFO L231 Difference]: Finished difference. Result has 667 places, 651 transitions, 1923 flow [2022-11-16 12:51:05,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=667, PETRI_TRANSITIONS=651} [2022-11-16 12:51:05,221 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 81 predicate places. [2022-11-16 12:51:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 667 places, 651 transitions, 1923 flow [2022-11-16 12:51:05,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.0) internal successors, (4584), 8 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:05,222 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:51:05,223 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:05,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1379264819, now seen corresponding path program 1 times [2022-11-16 12:51:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:05,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701286711] [2022-11-16 12:51:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:05,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:05,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701286711] [2022-11-16 12:51:05,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701286711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:05,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:05,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:51:05,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37875841] [2022-11-16 12:51:05,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:51:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:51:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:51:05,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 602 out of 659 [2022-11-16 12:51:05,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 651 transitions, 1923 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:05,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:05,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 602 of 659 [2022-11-16 12:51:05,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:07,233 INFO L130 PetriNetUnfolder]: 643/6183 cut-off events. [2022-11-16 12:51:07,234 INFO L131 PetriNetUnfolder]: For 586/597 co-relation queries the response was YES. [2022-11-16 12:51:07,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8411 conditions, 6183 events. 643/6183 cut-off events. For 586/597 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 67001 event pairs, 176 based on Foata normal form. 0/5157 useless extension candidates. Maximal degree in co-relation 8300. Up to 522 conditions per place. [2022-11-16 12:51:07,325 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 43 selfloop transitions, 4 changer transitions 0/670 dead transitions. [2022-11-16 12:51:07,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 670 transitions, 2056 flow [2022-11-16 12:51:07,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:51:07,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:51:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1857 transitions. [2022-11-16 12:51:07,327 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9393019726858877 [2022-11-16 12:51:07,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1857 transitions. [2022-11-16 12:51:07,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1857 transitions. [2022-11-16 12:51:07,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:07,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1857 transitions. [2022-11-16 12:51:07,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.0) internal successors, (1857), 3 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,330 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,331 INFO L175 Difference]: Start difference. First operand has 667 places, 651 transitions, 1923 flow. Second operand 3 states and 1857 transitions. [2022-11-16 12:51:07,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 670 transitions, 2056 flow [2022-11-16 12:51:07,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 670 transitions, 2029 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 12:51:07,349 INFO L231 Difference]: Finished difference. Result has 663 places, 652 transitions, 1920 flow [2022-11-16 12:51:07,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1920, PETRI_PLACES=663, PETRI_TRANSITIONS=652} [2022-11-16 12:51:07,351 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 77 predicate places. [2022-11-16 12:51:07,351 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 652 transitions, 1920 flow [2022-11-16 12:51:07,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:07,352 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:51:07,352 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1892975443, now seen corresponding path program 1 times [2022-11-16 12:51:07,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:07,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062941814] [2022-11-16 12:51:07,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062941814] [2022-11-16 12:51:07,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062941814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:07,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:07,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:51:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74350474] [2022-11-16 12:51:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:07,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:07,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:07,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:07,532 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 581 out of 659 [2022-11-16 12:51:07,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 652 transitions, 1920 flow. Second operand has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:07,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:07,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 581 of 659 [2022-11-16 12:51:07,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:09,760 INFO L130 PetriNetUnfolder]: 1081/6839 cut-off events. [2022-11-16 12:51:09,760 INFO L131 PetriNetUnfolder]: For 1352/1363 co-relation queries the response was YES. [2022-11-16 12:51:09,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10825 conditions, 6839 events. 1081/6839 cut-off events. For 1352/1363 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 81469 event pairs, 301 based on Foata normal form. 0/5627 useless extension candidates. Maximal degree in co-relation 10489. Up to 1350 conditions per place. [2022-11-16 12:51:09,855 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 42 selfloop transitions, 5 changer transitions 0/655 dead transitions. [2022-11-16 12:51:09,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 655 transitions, 2022 flow [2022-11-16 12:51:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:51:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:51:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3532 transitions. [2022-11-16 12:51:09,859 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8932726353060192 [2022-11-16 12:51:09,860 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3532 transitions. [2022-11-16 12:51:09,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3532 transitions. [2022-11-16 12:51:09,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:09,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3532 transitions. [2022-11-16 12:51:09,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 588.6666666666666) internal successors, (3532), 6 states have internal predecessors, (3532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,870 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,870 INFO L175 Difference]: Start difference. First operand has 663 places, 652 transitions, 1920 flow. Second operand 6 states and 3532 transitions. [2022-11-16 12:51:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 655 transitions, 2022 flow [2022-11-16 12:51:09,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 655 transitions, 2018 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:51:09,892 INFO L231 Difference]: Finished difference. Result has 666 places, 651 transitions, 1924 flow [2022-11-16 12:51:09,893 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1924, PETRI_PLACES=666, PETRI_TRANSITIONS=651} [2022-11-16 12:51:09,894 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 80 predicate places. [2022-11-16 12:51:09,895 INFO L495 AbstractCegarLoop]: Abstraction has has 666 places, 651 transitions, 1924 flow [2022-11-16 12:51:09,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 583.3333333333334) internal successors, (3500), 6 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:09,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:09,896 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:09,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:51:09,896 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:09,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:09,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1001537198, now seen corresponding path program 1 times [2022-11-16 12:51:09,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:09,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432757276] [2022-11-16 12:51:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:09,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:10,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:10,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432757276] [2022-11-16 12:51:10,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432757276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:10,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:10,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:51:10,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030331745] [2022-11-16 12:51:10,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:10,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:10,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:10,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:10,102 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-16 12:51:10,104 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 666 places, 651 transitions, 1924 flow. Second operand has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:10,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:10,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-16 12:51:10,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:13,199 INFO L130 PetriNetUnfolder]: 2449/9889 cut-off events. [2022-11-16 12:51:13,199 INFO L131 PetriNetUnfolder]: For 2696/2707 co-relation queries the response was YES. [2022-11-16 12:51:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16371 conditions, 9889 events. 2449/9889 cut-off events. For 2696/2707 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 130728 event pairs, 1265 based on Foata normal form. 12/7252 useless extension candidates. Maximal degree in co-relation 16038. Up to 2659 conditions per place. [2022-11-16 12:51:13,334 INFO L137 encePairwiseOnDemand]: 639/659 looper letters, 81 selfloop transitions, 18 changer transitions 1/666 dead transitions. [2022-11-16 12:51:13,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 671 places, 666 transitions, 2158 flow [2022-11-16 12:51:13,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:51:13,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:51:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3888 transitions. [2022-11-16 12:51:13,343 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.842835464990245 [2022-11-16 12:51:13,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3888 transitions. [2022-11-16 12:51:13,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3888 transitions. [2022-11-16 12:51:13,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:13,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3888 transitions. [2022-11-16 12:51:13,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 555.4285714285714) internal successors, (3888), 7 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:13,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:13,349 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:13,350 INFO L175 Difference]: Start difference. First operand has 666 places, 651 transitions, 1924 flow. Second operand 7 states and 3888 transitions. [2022-11-16 12:51:13,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 671 places, 666 transitions, 2158 flow [2022-11-16 12:51:13,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 666 transitions, 2147 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:13,366 INFO L231 Difference]: Finished difference. Result has 671 places, 659 transitions, 2012 flow [2022-11-16 12:51:13,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2012, PETRI_PLACES=671, PETRI_TRANSITIONS=659} [2022-11-16 12:51:13,367 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 85 predicate places. [2022-11-16 12:51:13,367 INFO L495 AbstractCegarLoop]: Abstraction has has 671 places, 659 transitions, 2012 flow [2022-11-16 12:51:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.1666666666666) internal successors, (3271), 6 states have internal predecessors, (3271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:13,368 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:13,368 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:13,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:51:13,369 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1187846289, now seen corresponding path program 1 times [2022-11-16 12:51:13,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:13,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361865997] [2022-11-16 12:51:13,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:13,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361865997] [2022-11-16 12:51:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361865997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:13,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:13,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:51:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342283210] [2022-11-16 12:51:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:51:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:51:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:51:13,640 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:51:13,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 659 transitions, 2012 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:13,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:13,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:51:13,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:15,147 INFO L130 PetriNetUnfolder]: 352/3644 cut-off events. [2022-11-16 12:51:15,147 INFO L131 PetriNetUnfolder]: For 563/565 co-relation queries the response was YES. [2022-11-16 12:51:15,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 3644 events. 352/3644 cut-off events. For 563/565 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 33614 event pairs, 55 based on Foata normal form. 16/3431 useless extension candidates. Maximal degree in co-relation 5910. Up to 240 conditions per place. [2022-11-16 12:51:15,204 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 58 selfloop transitions, 13 changer transitions 0/674 dead transitions. [2022-11-16 12:51:15,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 674 transitions, 2196 flow [2022-11-16 12:51:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:15,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5779 transitions. [2022-11-16 12:51:15,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769347496206373 [2022-11-16 12:51:15,209 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5779 transitions. [2022-11-16 12:51:15,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5779 transitions. [2022-11-16 12:51:15,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:15,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5779 transitions. [2022-11-16 12:51:15,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.9) internal successors, (5779), 10 states have internal predecessors, (5779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,218 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,218 INFO L175 Difference]: Start difference. First operand has 671 places, 659 transitions, 2012 flow. Second operand 10 states and 5779 transitions. [2022-11-16 12:51:15,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 674 transitions, 2196 flow [2022-11-16 12:51:15,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 678 places, 674 transitions, 2192 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:51:15,241 INFO L231 Difference]: Finished difference. Result has 678 places, 658 transitions, 2030 flow [2022-11-16 12:51:15,242 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2030, PETRI_PLACES=678, PETRI_TRANSITIONS=658} [2022-11-16 12:51:15,243 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 92 predicate places. [2022-11-16 12:51:15,243 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 658 transitions, 2030 flow [2022-11-16 12:51:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,244 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:15,244 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:15,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:51:15,245 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1258277645, now seen corresponding path program 1 times [2022-11-16 12:51:15,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:15,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882050408] [2022-11-16 12:51:15,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:15,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:15,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:15,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:15,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882050408] [2022-11-16 12:51:15,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882050408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:15,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:15,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:51:15,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394784163] [2022-11-16 12:51:15,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:15,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:51:15,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:15,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:51:15,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:51:15,455 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 541 out of 659 [2022-11-16 12:51:15,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 658 transitions, 2030 flow. Second operand has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:15,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:15,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 541 of 659 [2022-11-16 12:51:15,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:18,810 INFO L130 PetriNetUnfolder]: 2317/9321 cut-off events. [2022-11-16 12:51:18,810 INFO L131 PetriNetUnfolder]: For 3125/3136 co-relation queries the response was YES. [2022-11-16 12:51:18,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16767 conditions, 9321 events. 2317/9321 cut-off events. For 3125/3136 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 123738 event pairs, 1100 based on Foata normal form. 12/7129 useless extension candidates. Maximal degree in co-relation 16431. Up to 2314 conditions per place. [2022-11-16 12:51:18,923 INFO L137 encePairwiseOnDemand]: 638/659 looper letters, 101 selfloop transitions, 21 changer transitions 1/688 dead transitions. [2022-11-16 12:51:18,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 688 transitions, 2385 flow [2022-11-16 12:51:18,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:51:18,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:51:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3902 transitions. [2022-11-16 12:51:18,937 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8458703663559506 [2022-11-16 12:51:18,937 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3902 transitions. [2022-11-16 12:51:18,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3902 transitions. [2022-11-16 12:51:18,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:18,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3902 transitions. [2022-11-16 12:51:18,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 557.4285714285714) internal successors, (3902), 7 states have internal predecessors, (3902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 659.0) internal successors, (5272), 8 states have internal predecessors, (5272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,946 INFO L175 Difference]: Start difference. First operand has 678 places, 658 transitions, 2030 flow. Second operand 7 states and 3902 transitions. [2022-11-16 12:51:18,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 688 transitions, 2385 flow [2022-11-16 12:51:18,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 688 transitions, 2356 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-16 12:51:18,983 INFO L231 Difference]: Finished difference. Result has 680 places, 669 transitions, 2137 flow [2022-11-16 12:51:18,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2137, PETRI_PLACES=680, PETRI_TRANSITIONS=669} [2022-11-16 12:51:18,984 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 94 predicate places. [2022-11-16 12:51:18,984 INFO L495 AbstractCegarLoop]: Abstraction has has 680 places, 669 transitions, 2137 flow [2022-11-16 12:51:18,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 545.3333333333334) internal successors, (3272), 6 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:18,985 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:18,985 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:18,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:51:18,985 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:18,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:18,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2118053153, now seen corresponding path program 1 times [2022-11-16 12:51:18,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:18,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211332648] [2022-11-16 12:51:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:19,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:19,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211332648] [2022-11-16 12:51:19,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211332648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:19,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:19,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:51:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561292228] [2022-11-16 12:51:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:19,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:51:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:19,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:51:19,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:51:19,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:51:19,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 669 transitions, 2137 flow. Second operand has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:19,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:19,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:51:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:21,901 INFO L130 PetriNetUnfolder]: 1380/6993 cut-off events. [2022-11-16 12:51:21,901 INFO L131 PetriNetUnfolder]: For 2801/2812 co-relation queries the response was YES. [2022-11-16 12:51:21,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13887 conditions, 6993 events. 1380/6993 cut-off events. For 2801/2812 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 83596 event pairs, 223 based on Foata normal form. 56/6040 useless extension candidates. Maximal degree in co-relation 13547. Up to 1111 conditions per place. [2022-11-16 12:51:21,992 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 51 selfloop transitions, 13 changer transitions 4/679 dead transitions. [2022-11-16 12:51:21,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 679 transitions, 2287 flow [2022-11-16 12:51:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:21,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:21,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5776 transitions. [2022-11-16 12:51:21,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764795144157815 [2022-11-16 12:51:21,999 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5776 transitions. [2022-11-16 12:51:21,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5776 transitions. [2022-11-16 12:51:22,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:22,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5776 transitions. [2022-11-16 12:51:22,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.6) internal successors, (5776), 10 states have internal predecessors, (5776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:22,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:22,013 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:22,013 INFO L175 Difference]: Start difference. First operand has 680 places, 669 transitions, 2137 flow. Second operand 10 states and 5776 transitions. [2022-11-16 12:51:22,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 679 transitions, 2287 flow [2022-11-16 12:51:22,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 679 transitions, 2283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:51:22,068 INFO L231 Difference]: Finished difference. Result has 687 places, 667 transitions, 2143 flow [2022-11-16 12:51:22,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2143, PETRI_PLACES=687, PETRI_TRANSITIONS=667} [2022-11-16 12:51:22,070 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-16 12:51:22,070 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 667 transitions, 2143 flow [2022-11-16 12:51:22,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.125) internal successors, (4585), 8 states have internal predecessors, (4585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:22,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:22,071 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:22,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:51:22,071 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:22,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1235136270, now seen corresponding path program 1 times [2022-11-16 12:51:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:22,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506274461] [2022-11-16 12:51:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:22,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:22,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506274461] [2022-11-16 12:51:22,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506274461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:22,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:22,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:51:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633666674] [2022-11-16 12:51:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:51:22,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:51:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:51:22,368 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 659 [2022-11-16 12:51:22,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 667 transitions, 2143 flow. Second operand has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:22,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:22,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 659 [2022-11-16 12:51:22,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:24,844 INFO L130 PetriNetUnfolder]: 1172/6729 cut-off events. [2022-11-16 12:51:24,844 INFO L131 PetriNetUnfolder]: For 2683/2694 co-relation queries the response was YES. [2022-11-16 12:51:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 6729 events. 1172/6729 cut-off events. For 2683/2694 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 79849 event pairs, 223 based on Foata normal form. 56/5921 useless extension candidates. Maximal degree in co-relation 13103. Up to 935 conditions per place. [2022-11-16 12:51:24,960 INFO L137 encePairwiseOnDemand]: 646/659 looper letters, 44 selfloop transitions, 13 changer transitions 12/680 dead transitions. [2022-11-16 12:51:24,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 680 transitions, 2319 flow [2022-11-16 12:51:24,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:51:24,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:51:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 5777 transitions. [2022-11-16 12:51:24,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766312594840667 [2022-11-16 12:51:24,970 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 5777 transitions. [2022-11-16 12:51:24,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 5777 transitions. [2022-11-16 12:51:24,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:24,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 5777 transitions. [2022-11-16 12:51:24,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 577.7) internal successors, (5777), 10 states have internal predecessors, (5777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:24,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:24,987 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 659.0) internal successors, (7249), 11 states have internal predecessors, (7249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:24,987 INFO L175 Difference]: Start difference. First operand has 687 places, 667 transitions, 2143 flow. Second operand 10 states and 5777 transitions. [2022-11-16 12:51:24,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 680 transitions, 2319 flow [2022-11-16 12:51:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 680 transitions, 2286 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-11-16 12:51:25,042 INFO L231 Difference]: Finished difference. Result has 687 places, 666 transitions, 2134 flow [2022-11-16 12:51:25,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2134, PETRI_PLACES=687, PETRI_TRANSITIONS=666} [2022-11-16 12:51:25,043 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-16 12:51:25,043 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 666 transitions, 2134 flow [2022-11-16 12:51:25,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 573.25) internal successors, (4586), 8 states have internal predecessors, (4586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:25,045 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:25,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 12:51:25,045 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:25,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:25,045 INFO L85 PathProgramCache]: Analyzing trace with hash -67120319, now seen corresponding path program 1 times [2022-11-16 12:51:25,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:25,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702424205] [2022-11-16 12:51:25,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:25,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:25,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:25,182 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:25,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:25,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702424205] [2022-11-16 12:51:25,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702424205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:25,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:25,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:25,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29788048] [2022-11-16 12:51:25,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:25,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:25,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:25,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:25,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:51:25,187 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:25,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 666 transitions, 2134 flow. Second operand has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:25,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:25,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:25,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:28,071 INFO L130 PetriNetUnfolder]: 406/10260 cut-off events. [2022-11-16 12:51:28,071 INFO L131 PetriNetUnfolder]: For 1430/1437 co-relation queries the response was YES. [2022-11-16 12:51:28,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16337 conditions, 10260 events. 406/10260 cut-off events. For 1430/1437 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 104386 event pairs, 26 based on Foata normal form. 0/9788 useless extension candidates. Maximal degree in co-relation 16098. Up to 595 conditions per place. [2022-11-16 12:51:28,185 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 52 selfloop transitions, 6 changer transitions 0/690 dead transitions. [2022-11-16 12:51:28,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 690 transitions, 2302 flow [2022-11-16 12:51:28,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:51:28,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:51:28,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3045 transitions. [2022-11-16 12:51:28,193 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9241274658573596 [2022-11-16 12:51:28,193 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3045 transitions. [2022-11-16 12:51:28,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3045 transitions. [2022-11-16 12:51:28,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:28,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3045 transitions. [2022-11-16 12:51:28,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 609.0) internal successors, (3045), 5 states have internal predecessors, (3045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,200 INFO L175 Difference]: Start difference. First operand has 687 places, 666 transitions, 2134 flow. Second operand 5 states and 3045 transitions. [2022-11-16 12:51:28,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 690 transitions, 2302 flow [2022-11-16 12:51:28,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 690 transitions, 2275 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-11-16 12:51:28,281 INFO L231 Difference]: Finished difference. Result has 687 places, 668 transitions, 2139 flow [2022-11-16 12:51:28,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=660, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2139, PETRI_PLACES=687, PETRI_TRANSITIONS=668} [2022-11-16 12:51:28,282 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-16 12:51:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 668 transitions, 2139 flow [2022-11-16 12:51:28,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.25) internal successors, (2397), 4 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:28,283 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:28,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 12:51:28,283 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1786326451, now seen corresponding path program 1 times [2022-11-16 12:51:28,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:28,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050112569] [2022-11-16 12:51:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:28,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:28,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:28,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050112569] [2022-11-16 12:51:28,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050112569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:28,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:28,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:28,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684369177] [2022-11-16 12:51:28,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:28,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:28,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:28,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:28,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:51:28,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:28,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 668 transitions, 2139 flow. Second operand has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:28,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:28,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:28,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:30,506 INFO L130 PetriNetUnfolder]: 731/6093 cut-off events. [2022-11-16 12:51:30,507 INFO L131 PetriNetUnfolder]: For 1096/1107 co-relation queries the response was YES. [2022-11-16 12:51:30,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 6093 events. 731/6093 cut-off events. For 1096/1107 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 67809 event pairs, 165 based on Foata normal form. 0/5396 useless extension candidates. Maximal degree in co-relation 9861. Up to 637 conditions per place. [2022-11-16 12:51:30,591 INFO L137 encePairwiseOnDemand]: 651/659 looper letters, 51 selfloop transitions, 6 changer transitions 0/691 dead transitions. [2022-11-16 12:51:30,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 691 transitions, 2302 flow [2022-11-16 12:51:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:51:30,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:51:30,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3044 transitions. [2022-11-16 12:51:30,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9238239757207891 [2022-11-16 12:51:30,595 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3044 transitions. [2022-11-16 12:51:30,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3044 transitions. [2022-11-16 12:51:30,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:30,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3044 transitions. [2022-11-16 12:51:30,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 608.8) internal successors, (3044), 5 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:30,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:30,599 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 659.0) internal successors, (3954), 6 states have internal predecessors, (3954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:30,599 INFO L175 Difference]: Start difference. First operand has 687 places, 668 transitions, 2139 flow. Second operand 5 states and 3044 transitions. [2022-11-16 12:51:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 691 transitions, 2302 flow [2022-11-16 12:51:30,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 689 places, 691 transitions, 2294 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:51:30,629 INFO L231 Difference]: Finished difference. Result has 692 places, 670 transitions, 2163 flow [2022-11-16 12:51:30,629 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2131, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=670} [2022-11-16 12:51:30,630 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-16 12:51:30,630 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 670 transitions, 2163 flow [2022-11-16 12:51:30,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 599.5) internal successors, (2398), 4 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:30,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:30,631 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:30,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 12:51:30,632 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:30,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:30,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1367584952, now seen corresponding path program 1 times [2022-11-16 12:51:30,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:30,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717013956] [2022-11-16 12:51:30,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:30,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:30,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:30,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717013956] [2022-11-16 12:51:30,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717013956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:30,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724763540] [2022-11-16 12:51:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:30,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:30,802 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:30,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:51:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:31,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:51:31,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:31,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:31,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724763540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:31,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:51:31,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 12:51:31,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498802460] [2022-11-16 12:51:31,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:51:31,099 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:31,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 670 transitions, 2163 flow. Second operand has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:31,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:31,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:31,984 INFO L130 PetriNetUnfolder]: 101/1766 cut-off events. [2022-11-16 12:51:31,984 INFO L131 PetriNetUnfolder]: For 254/258 co-relation queries the response was YES. [2022-11-16 12:51:32,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2957 conditions, 1766 events. 101/1766 cut-off events. For 254/258 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10508 event pairs, 0 based on Foata normal form. 2/1707 useless extension candidates. Maximal degree in co-relation 2725. Up to 129 conditions per place. [2022-11-16 12:51:32,051 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 32 selfloop transitions, 6 changer transitions 0/672 dead transitions. [2022-11-16 12:51:32,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 672 transitions, 2244 flow [2022-11-16 12:51:32,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:51:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:51:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2424 transitions. [2022-11-16 12:51:32,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9195751138088012 [2022-11-16 12:51:32,054 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2424 transitions. [2022-11-16 12:51:32,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2424 transitions. [2022-11-16 12:51:32,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:32,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2424 transitions. [2022-11-16 12:51:32,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 606.0) internal successors, (2424), 4 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:32,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:32,059 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:32,059 INFO L175 Difference]: Start difference. First operand has 692 places, 670 transitions, 2163 flow. Second operand 4 states and 2424 transitions. [2022-11-16 12:51:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 672 transitions, 2244 flow [2022-11-16 12:51:32,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 672 transitions, 2236 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:51:32,080 INFO L231 Difference]: Finished difference. Result has 692 places, 669 transitions, 2163 flow [2022-11-16 12:51:32,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2151, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2163, PETRI_PLACES=692, PETRI_TRANSITIONS=669} [2022-11-16 12:51:32,081 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 106 predicate places. [2022-11-16 12:51:32,081 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 669 transitions, 2163 flow [2022-11-16 12:51:32,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.25) internal successors, (2405), 4 states have internal predecessors, (2405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:32,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:32,083 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:32,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-16 12:51:32,289 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash -554537679, now seen corresponding path program 1 times [2022-11-16 12:51:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:32,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033076388] [2022-11-16 12:51:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033076388] [2022-11-16 12:51:32,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033076388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:32,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370490604] [2022-11-16 12:51:32,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:32,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:32,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:32,462 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:32,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:51:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:32,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:51:32,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:32,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:32,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370490604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:32,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:51:32,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 12:51:32,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093822247] [2022-11-16 12:51:32,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:32,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:51:32,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:32,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:51:32,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:51:32,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:32,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 669 transitions, 2163 flow. Second operand has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:32,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:32,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:32,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:33,812 INFO L130 PetriNetUnfolder]: 98/1757 cut-off events. [2022-11-16 12:51:33,812 INFO L131 PetriNetUnfolder]: For 258/262 co-relation queries the response was YES. [2022-11-16 12:51:33,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2938 conditions, 1757 events. 98/1757 cut-off events. For 258/262 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10463 event pairs, 0 based on Foata normal form. 6/1702 useless extension candidates. Maximal degree in co-relation 2706. Up to 59 conditions per place. [2022-11-16 12:51:33,881 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 48 selfloop transitions, 8 changer transitions 0/690 dead transitions. [2022-11-16 12:51:33,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 690 transitions, 2319 flow [2022-11-16 12:51:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:51:33,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:51:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3640 transitions. [2022-11-16 12:51:33,884 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9205867475973698 [2022-11-16 12:51:33,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3640 transitions. [2022-11-16 12:51:33,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3640 transitions. [2022-11-16 12:51:33,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:33,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3640 transitions. [2022-11-16 12:51:33,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.6666666666666) internal successors, (3640), 6 states have internal predecessors, (3640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:33,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:33,891 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:33,891 INFO L175 Difference]: Start difference. First operand has 692 places, 669 transitions, 2163 flow. Second operand 6 states and 3640 transitions. [2022-11-16 12:51:33,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 690 transitions, 2319 flow [2022-11-16 12:51:33,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 690 transitions, 2305 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:51:33,904 INFO L231 Difference]: Finished difference. Result has 691 places, 666 transitions, 2155 flow [2022-11-16 12:51:33,905 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=666, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2155, PETRI_PLACES=691, PETRI_TRANSITIONS=666} [2022-11-16 12:51:33,905 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 105 predicate places. [2022-11-16 12:51:33,905 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 666 transitions, 2155 flow [2022-11-16 12:51:33,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.6) internal successors, (3003), 5 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:33,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:33,906 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:33,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:34,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:34,110 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:34,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1821783879, now seen corresponding path program 1 times [2022-11-16 12:51:34,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:34,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312849616] [2022-11-16 12:51:34,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:34,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312849616] [2022-11-16 12:51:34,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312849616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:34,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763084095] [2022-11-16 12:51:34,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:34,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:34,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:34,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:34,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:51:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:34,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:51:34,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:34,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:34,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763084095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:34,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:51:34,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-16 12:51:34,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508485632] [2022-11-16 12:51:34,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:34,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:51:34,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:34,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:51:34,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:51:34,615 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:34,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 666 transitions, 2155 flow. Second operand has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:34,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:34,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:34,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:36,921 INFO L130 PetriNetUnfolder]: 780/6518 cut-off events. [2022-11-16 12:51:36,921 INFO L131 PetriNetUnfolder]: For 1268/1280 co-relation queries the response was YES. [2022-11-16 12:51:37,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 6518 events. 780/6518 cut-off events. For 1268/1280 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 73296 event pairs, 444 based on Foata normal form. 13/5805 useless extension candidates. Maximal degree in co-relation 10665. Up to 995 conditions per place. [2022-11-16 12:51:37,032 INFO L137 encePairwiseOnDemand]: 653/659 looper letters, 31 selfloop transitions, 6 changer transitions 0/667 dead transitions. [2022-11-16 12:51:37,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 667 transitions, 2231 flow [2022-11-16 12:51:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:51:37,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:51:37,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2423 transitions. [2022-11-16 12:51:37,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.919195751138088 [2022-11-16 12:51:37,035 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2423 transitions. [2022-11-16 12:51:37,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2423 transitions. [2022-11-16 12:51:37,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:37,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2423 transitions. [2022-11-16 12:51:37,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 605.75) internal successors, (2423), 4 states have internal predecessors, (2423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 659.0) internal successors, (3295), 5 states have internal predecessors, (3295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,041 INFO L175 Difference]: Start difference. First operand has 691 places, 666 transitions, 2155 flow. Second operand 4 states and 2423 transitions. [2022-11-16 12:51:37,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 667 transitions, 2231 flow [2022-11-16 12:51:37,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 667 transitions, 2212 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:37,075 INFO L231 Difference]: Finished difference. Result has 688 places, 665 transitions, 2144 flow [2022-11-16 12:51:37,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=665, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2144, PETRI_PLACES=688, PETRI_TRANSITIONS=665} [2022-11-16 12:51:37,076 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 102 predicate places. [2022-11-16 12:51:37,076 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 665 transitions, 2144 flow [2022-11-16 12:51:37,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 601.5) internal successors, (2406), 4 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,077 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:37,077 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:37,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:37,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:37,284 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:37,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:37,284 INFO L85 PathProgramCache]: Analyzing trace with hash -640723395, now seen corresponding path program 1 times [2022-11-16 12:51:37,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:37,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969247249] [2022-11-16 12:51:37,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:37,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:37,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969247249] [2022-11-16 12:51:37,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969247249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:37,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320675644] [2022-11-16 12:51:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:37,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:37,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:37,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:37,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:51:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:37,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:51:37,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:37,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:51:37,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320675644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:37,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:51:37,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 12:51:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992897663] [2022-11-16 12:51:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:37,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:51:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:51:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:51:37,938 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:37,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 665 transitions, 2144 flow. Second operand has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:37,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:37,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:37,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:40,146 INFO L130 PetriNetUnfolder]: 744/6441 cut-off events. [2022-11-16 12:51:40,146 INFO L131 PetriNetUnfolder]: For 1263/1275 co-relation queries the response was YES. [2022-11-16 12:51:40,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 6441 events. 744/6441 cut-off events. For 1263/1275 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 71405 event pairs, 180 based on Foata normal form. 39/5795 useless extension candidates. Maximal degree in co-relation 10532. Up to 516 conditions per place. [2022-11-16 12:51:40,261 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 46 selfloop transitions, 8 changer transitions 0/684 dead transitions. [2022-11-16 12:51:40,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 684 transitions, 2290 flow [2022-11-16 12:51:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:51:40,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:51:40,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3638 transitions. [2022-11-16 12:51:40,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9200809307030855 [2022-11-16 12:51:40,264 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3638 transitions. [2022-11-16 12:51:40,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3638 transitions. [2022-11-16 12:51:40,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:40,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3638 transitions. [2022-11-16 12:51:40,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 606.3333333333334) internal successors, (3638), 6 states have internal predecessors, (3638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:40,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:40,269 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 659.0) internal successors, (4613), 7 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:40,270 INFO L175 Difference]: Start difference. First operand has 688 places, 665 transitions, 2144 flow. Second operand 6 states and 3638 transitions. [2022-11-16 12:51:40,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 684 transitions, 2290 flow [2022-11-16 12:51:40,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 684 transitions, 2276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:51:40,302 INFO L231 Difference]: Finished difference. Result has 687 places, 662 transitions, 2136 flow [2022-11-16 12:51:40,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2136, PETRI_PLACES=687, PETRI_TRANSITIONS=662} [2022-11-16 12:51:40,303 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 101 predicate places. [2022-11-16 12:51:40,304 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 662 transitions, 2136 flow [2022-11-16 12:51:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 600.8) internal successors, (3004), 5 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:40,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:40,305 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:40,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:40,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-11-16 12:51:40,515 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:40,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash 759579150, now seen corresponding path program 1 times [2022-11-16 12:51:40,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:40,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042240132] [2022-11-16 12:51:40,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:40,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:40,603 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:51:40,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:40,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042240132] [2022-11-16 12:51:40,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042240132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:40,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:40,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:40,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306980988] [2022-11-16 12:51:40,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:40,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:51:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:40,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:51:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:51:40,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-16 12:51:40,609 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 662 transitions, 2136 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:40,609 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:40,609 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-16 12:51:40,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:41,602 INFO L130 PetriNetUnfolder]: 82/2108 cut-off events. [2022-11-16 12:51:41,602 INFO L131 PetriNetUnfolder]: For 289/297 co-relation queries the response was YES. [2022-11-16 12:51:41,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3379 conditions, 2108 events. 82/2108 cut-off events. For 289/297 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12390 event pairs, 10 based on Foata normal form. 0/2032 useless extension candidates. Maximal degree in co-relation 3136. Up to 70 conditions per place. [2022-11-16 12:51:41,671 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/665 dead transitions. [2022-11-16 12:51:41,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 665 transitions, 2169 flow [2022-11-16 12:51:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:51:41,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:51:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-16 12:51:41,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-16 12:51:41,674 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-16 12:51:41,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-16 12:51:41,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:41,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-16 12:51:41,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:41,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:41,678 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:41,678 INFO L175 Difference]: Start difference. First operand has 687 places, 662 transitions, 2136 flow. Second operand 3 states and 1874 transitions. [2022-11-16 12:51:41,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 665 transitions, 2169 flow [2022-11-16 12:51:41,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 665 transitions, 2150 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 12:51:41,692 INFO L231 Difference]: Finished difference. Result has 686 places, 664 transitions, 2139 flow [2022-11-16 12:51:41,692 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=659, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2139, PETRI_PLACES=686, PETRI_TRANSITIONS=664} [2022-11-16 12:51:41,693 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 100 predicate places. [2022-11-16 12:51:41,693 INFO L495 AbstractCegarLoop]: Abstraction has has 686 places, 664 transitions, 2139 flow [2022-11-16 12:51:41,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:41,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:41,694 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 12:51:41,694 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:41,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:41,695 INFO L85 PathProgramCache]: Analyzing trace with hash -189774543, now seen corresponding path program 1 times [2022-11-16 12:51:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:41,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063719922] [2022-11-16 12:51:41,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:41,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:41,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:41,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063719922] [2022-11-16 12:51:41,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063719922] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:41,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868947239] [2022-11-16 12:51:41,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:41,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:41,865 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:41,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:51:42,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:42,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:51:42,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:42,311 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:42,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:42,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868947239] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:42,527 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:51:42,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-16 12:51:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264323265] [2022-11-16 12:51:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:51:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:51:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:51:42,533 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:42,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 664 transitions, 2139 flow. Second operand has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:42,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:42,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:44,359 INFO L130 PetriNetUnfolder]: 188/3171 cut-off events. [2022-11-16 12:51:44,360 INFO L131 PetriNetUnfolder]: For 405/409 co-relation queries the response was YES. [2022-11-16 12:51:44,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 3171 events. 188/3171 cut-off events. For 405/409 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 18536 event pairs, 20 based on Foata normal form. 6/3075 useless extension candidates. Maximal degree in co-relation 5032. Up to 107 conditions per place. [2022-11-16 12:51:44,482 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 89 selfloop transitions, 11 changer transitions 0/732 dead transitions. [2022-11-16 12:51:44,482 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 732 transitions, 2496 flow [2022-11-16 12:51:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:51:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:51:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5476 transitions. [2022-11-16 12:51:44,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9232844377002192 [2022-11-16 12:51:44,487 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5476 transitions. [2022-11-16 12:51:44,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5476 transitions. [2022-11-16 12:51:44,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:44,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5476 transitions. [2022-11-16 12:51:44,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.4444444444445) internal successors, (5476), 9 states have internal predecessors, (5476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,495 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,495 INFO L175 Difference]: Start difference. First operand has 686 places, 664 transitions, 2139 flow. Second operand 9 states and 5476 transitions. [2022-11-16 12:51:44,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 732 transitions, 2496 flow [2022-11-16 12:51:44,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 692 places, 732 transitions, 2490 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:51:44,509 INFO L231 Difference]: Finished difference. Result has 697 places, 669 transitions, 2201 flow [2022-11-16 12:51:44,510 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=697, PETRI_TRANSITIONS=669} [2022-11-16 12:51:44,510 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 111 predicate places. [2022-11-16 12:51:44,511 INFO L495 AbstractCegarLoop]: Abstraction has has 697 places, 669 transitions, 2201 flow [2022-11-16 12:51:44,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 600.9) internal successors, (6009), 10 states have internal predecessors, (6009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,512 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:44,512 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:44,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:44,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-11-16 12:51:44,722 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:44,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:44,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1738026950, now seen corresponding path program 1 times [2022-11-16 12:51:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:44,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922758731] [2022-11-16 12:51:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:44,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-16 12:51:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:44,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922758731] [2022-11-16 12:51:44,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922758731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:51:44,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:51:44,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:51:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856002715] [2022-11-16 12:51:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:51:44,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:51:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:44,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:51:44,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:51:44,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 659 [2022-11-16 12:51:44,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 669 transitions, 2201 flow. Second operand has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:44,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:44,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 659 [2022-11-16 12:51:44,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:47,391 INFO L130 PetriNetUnfolder]: 574/6758 cut-off events. [2022-11-16 12:51:47,391 INFO L131 PetriNetUnfolder]: For 920/940 co-relation queries the response was YES. [2022-11-16 12:51:47,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 6758 events. 574/6758 cut-off events. For 920/940 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 67994 event pairs, 200 based on Foata normal form. 0/6209 useless extension candidates. Maximal degree in co-relation 10384. Up to 475 conditions per place. [2022-11-16 12:51:47,584 INFO L137 encePairwiseOnDemand]: 655/659 looper letters, 10 selfloop transitions, 3 changer transitions 0/672 dead transitions. [2022-11-16 12:51:47,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 672 transitions, 2234 flow [2022-11-16 12:51:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:51:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:51:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1874 transitions. [2022-11-16 12:51:47,587 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9479008598887203 [2022-11-16 12:51:47,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1874 transitions. [2022-11-16 12:51:47,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1874 transitions. [2022-11-16 12:51:47,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:47,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1874 transitions. [2022-11-16 12:51:47,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 624.6666666666666) internal successors, (1874), 3 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:47,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:47,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 659.0) internal successors, (2636), 4 states have internal predecessors, (2636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:47,590 INFO L175 Difference]: Start difference. First operand has 697 places, 669 transitions, 2201 flow. Second operand 3 states and 1874 transitions. [2022-11-16 12:51:47,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 672 transitions, 2234 flow [2022-11-16 12:51:47,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 672 transitions, 2220 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 12:51:47,620 INFO L231 Difference]: Finished difference. Result has 698 places, 671 transitions, 2209 flow [2022-11-16 12:51:47,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2187, PETRI_DIFFERENCE_MINUEND_PLACES=694, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2209, PETRI_PLACES=698, PETRI_TRANSITIONS=671} [2022-11-16 12:51:47,621 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 112 predicate places. [2022-11-16 12:51:47,621 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 671 transitions, 2209 flow [2022-11-16 12:51:47,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.6666666666666) internal successors, (1868), 3 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:47,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:47,622 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:47,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 12:51:47,623 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:47,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:47,623 INFO L85 PathProgramCache]: Analyzing trace with hash 497489405, now seen corresponding path program 1 times [2022-11-16 12:51:47,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:47,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757740339] [2022-11-16 12:51:47,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:47,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:47,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:47,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757740339] [2022-11-16 12:51:47,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757740339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:47,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96634881] [2022-11-16 12:51:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:47,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:47,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:47,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:47,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:51:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:48,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:51:48,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:48,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:48,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96634881] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:48,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:51:48,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-16 12:51:48,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292875805] [2022-11-16 12:51:48,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:48,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:51:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:51:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:51:48,414 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:48,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 671 transitions, 2209 flow. Second operand has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:48,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:48,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:48,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:51:57,091 INFO L130 PetriNetUnfolder]: 2390/19951 cut-off events. [2022-11-16 12:51:57,091 INFO L131 PetriNetUnfolder]: For 3786/3806 co-relation queries the response was YES. [2022-11-16 12:51:57,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33470 conditions, 19951 events. 2390/19951 cut-off events. For 3786/3806 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 266949 event pairs, 400 based on Foata normal form. 63/17890 useless extension candidates. Maximal degree in co-relation 33233. Up to 1680 conditions per place. [2022-11-16 12:51:57,422 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 86 selfloop transitions, 11 changer transitions 0/736 dead transitions. [2022-11-16 12:51:57,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 736 transitions, 2551 flow [2022-11-16 12:51:57,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:51:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 12:51:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5473 transitions. [2022-11-16 12:51:57,427 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9227786208059349 [2022-11-16 12:51:57,427 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5473 transitions. [2022-11-16 12:51:57,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5473 transitions. [2022-11-16 12:51:57,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:51:57,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5473 transitions. [2022-11-16 12:51:57,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 608.1111111111111) internal successors, (5473), 9 states have internal predecessors, (5473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,434 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 659.0) internal successors, (6590), 10 states have internal predecessors, (6590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,434 INFO L175 Difference]: Start difference. First operand has 698 places, 671 transitions, 2209 flow. Second operand 9 states and 5473 transitions. [2022-11-16 12:51:57,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 736 transitions, 2551 flow [2022-11-16 12:51:57,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 736 transitions, 2545 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:51:57,598 INFO L231 Difference]: Finished difference. Result has 709 places, 676 transitions, 2271 flow [2022-11-16 12:51:57,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=696, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=709, PETRI_TRANSITIONS=676} [2022-11-16 12:51:57,599 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 123 predicate places. [2022-11-16 12:51:57,599 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 676 transitions, 2271 flow [2022-11-16 12:51:57,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 601.0) internal successors, (6010), 10 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:57,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:51:57,600 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:51:57,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:51:57,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-11-16 12:51:57,802 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:51:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:51:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -219691039, now seen corresponding path program 1 times [2022-11-16 12:51:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:51:57,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901573226] [2022-11-16 12:51:57,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:57,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:51:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:51:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901573226] [2022-11-16 12:51:58,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901573226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:58,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058690626] [2022-11-16 12:51:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:51:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:51:58,131 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:51:58,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:51:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:51:58,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:51:58,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:51:58,636 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:58,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:51:58,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058690626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:51:58,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:51:58,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:51:58,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394404479] [2022-11-16 12:51:58,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:51:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:51:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:51:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:51:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:51:58,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:51:58,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 676 transitions, 2271 flow. Second operand has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:51:58,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:51:58,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:51:58,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:52:08,935 INFO L130 PetriNetUnfolder]: 772/17429 cut-off events. [2022-11-16 12:52:08,935 INFO L131 PetriNetUnfolder]: For 2294/2302 co-relation queries the response was YES. [2022-11-16 12:52:09,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28095 conditions, 17429 events. 772/17429 cut-off events. For 2294/2302 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 161755 event pairs, 17 based on Foata normal form. 10/16796 useless extension candidates. Maximal degree in co-relation 27842. Up to 885 conditions per place. [2022-11-16 12:52:09,371 INFO L137 encePairwiseOnDemand]: 650/659 looper letters, 150 selfloop transitions, 26 changer transitions 0/815 dead transitions. [2022-11-16 12:52:09,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 728 places, 815 transitions, 3002 flow [2022-11-16 12:52:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:52:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:52:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 12119 transitions. [2022-11-16 12:52:09,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9194992412746585 [2022-11-16 12:52:09,379 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 12119 transitions. [2022-11-16 12:52:09,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 12119 transitions. [2022-11-16 12:52:09,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:52:09,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 12119 transitions. [2022-11-16 12:52:09,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 605.95) internal successors, (12119), 20 states have internal predecessors, (12119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:09,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:09,397 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 659.0) internal successors, (13839), 21 states have internal predecessors, (13839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:09,397 INFO L175 Difference]: Start difference. First operand has 709 places, 676 transitions, 2271 flow. Second operand 20 states and 12119 transitions. [2022-11-16 12:52:09,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 728 places, 815 transitions, 3002 flow [2022-11-16 12:52:09,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 815 transitions, 2988 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 12:52:09,546 INFO L231 Difference]: Finished difference. Result has 730 places, 691 transitions, 2425 flow [2022-11-16 12:52:09,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=659, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2425, PETRI_PLACES=730, PETRI_TRANSITIONS=691} [2022-11-16 12:52:09,547 INFO L288 CegarLoopForPetriNet]: 586 programPoint places, 144 predicate places. [2022-11-16 12:52:09,547 INFO L495 AbstractCegarLoop]: Abstraction has has 730 places, 691 transitions, 2425 flow [2022-11-16 12:52:09,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 600.4375) internal successors, (9607), 16 states have internal predecessors, (9607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:09,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:52:09,548 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:52:09,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:52:09,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:09,749 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-16 12:52:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:52:09,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1702614515, now seen corresponding path program 1 times [2022-11-16 12:52:09,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:52:09,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777155369] [2022-11-16 12:52:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:52:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:52:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:52:10,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777155369] [2022-11-16 12:52:10,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777155369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:52:10,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372415963] [2022-11-16 12:52:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:52:10,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:52:10,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:52:10,197 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:52:10,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d1bcc14-beca-4a12-a511-ffd0ef6bdd26/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:52:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:52:10,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:52:10,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:52:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:52:10,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:52:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-11-16 12:52:11,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372415963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:52:11,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:52:11,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:52:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436552987] [2022-11-16 12:52:11,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:52:11,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:52:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:52:11,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:52:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:52:11,085 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 597 out of 659 [2022-11-16 12:52:11,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 730 places, 691 transitions, 2425 flow. Second operand has 16 states, 16 states have (on average 600.5) internal successors, (9608), 16 states have internal predecessors, (9608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:52:11,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:52:11,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 597 of 659 [2022-11-16 12:52:11,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand