./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro --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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- 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-8393723 [2022-11-18 18:34:19,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:34:19,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:34:19,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:34:19,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:34:19,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:34:19,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:34:19,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:34:19,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:34:19,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:34:19,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:34:19,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:34:19,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:34:19,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:34:19,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:34:19,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:34:19,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:34:19,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:34:19,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:34:19,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:34:19,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:34:19,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:34:19,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:34:19,456 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:34:19,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:34:19,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:34:19,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:34:19,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:34:19,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:34:19,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:34:19,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:34:19,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:34:19,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:34:19,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:34:19,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:34:19,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:34:19,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:34:19,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:34:19,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:34:19,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:34:19,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:34:19,475 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:34:19,517 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:34:19,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:34:19,518 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:34:19,518 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:34:19,523 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:34:19,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:34:19,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:34:19,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:34:19,524 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:34:19,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:34:19,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:34:19,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:34:19,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:34:19,527 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:34:19,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:34:19,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:34:19,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:34:19,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:34:19,528 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:34:19,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:34:19,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:34:19,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:34:19,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:34:19,529 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:34:19,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:34:19,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:34:19,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:19,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:34:19,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:34:19,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:34:19,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:34:19,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:34:19,533 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:34:19,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:34:19,533 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:34:19,533 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_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2022-11-18 18:34:19,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:34:19,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:34:19,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:34:19,900 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:34:19,901 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:34:19,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-18 18:34:19,975 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/data/876ea3dd4/fb6eaaea3cd54e108db10f1546f3437e/FLAGf4d9fa8ec [2022-11-18 18:34:20,654 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:34:20,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2022-11-18 18:34:20,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/data/876ea3dd4/fb6eaaea3cd54e108db10f1546f3437e/FLAGf4d9fa8ec [2022-11-18 18:34:20,992 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/data/876ea3dd4/fb6eaaea3cd54e108db10f1546f3437e [2022-11-18 18:34:20,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:34:20,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:34:21,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:21,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:34:21,013 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:34:21,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:20" (1/1) ... [2022-11-18 18:34:21,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45e7a1dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21, skipping insertion in model container [2022-11-18 18:34:21,015 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:34:20" (1/1) ... [2022-11-18 18:34:21,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:34:21,052 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:34:21,292 WARN L234 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_df289f2d-06ae-4d85-8bee-a70e8b63b839/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-18 18:34:21,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:21,302 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:34:21,332 WARN L234 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_df289f2d-06ae-4d85-8bee-a70e8b63b839/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-11-18 18:34:21,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:34:21,351 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:34:21,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21 WrapperNode [2022-11-18 18:34:21,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:34:21,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:21,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:34:21,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:34:21,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,396 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-11-18 18:34:21,397 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:34:21,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:34:21,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:34:21,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:34:21,409 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,428 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,438 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,461 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:34:21,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:34:21,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:34:21,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:34:21,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (1/1) ... [2022-11-18 18:34:21,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:34:21,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:21,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:34:21,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:34:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:34:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:34:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:34:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:34:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:34:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:34:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:34:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:34:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:34:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:34:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:34:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:34:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:34:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:34:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:34:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:34:21,591 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 18:34:21,712 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:34:21,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:34:21,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:34:22,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:34:22,178 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 18:34:22,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:22 BoogieIcfgContainer [2022-11-18 18:34:22,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:34:22,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:34:22,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:34:22,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:34:22,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:34:20" (1/3) ... [2022-11-18 18:34:22,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567a9e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:22, skipping insertion in model container [2022-11-18 18:34:22,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:34:21" (2/3) ... [2022-11-18 18:34:22,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567a9e59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:34:22, skipping insertion in model container [2022-11-18 18:34:22,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:22" (3/3) ... [2022-11-18 18:34:22,201 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-11-18 18:34:22,213 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:34:22,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:34:22,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 18:34:22,227 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:34:22,341 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:34:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2022-11-18 18:34:22,469 INFO L130 PetriNetUnfolder]: 7/109 cut-off events. [2022-11-18 18:34:22,469 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:34:22,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 109 events. 7/109 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 87. Up to 2 conditions per place. [2022-11-18 18:34:22,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 112 transitions, 248 flow [2022-11-18 18:34:22,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 93 transitions, 198 flow [2022-11-18 18:34:22,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:34:22,510 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;@651c9da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:34:22,511 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-18 18:34:22,544 INFO L130 PetriNetUnfolder]: 3/51 cut-off events. [2022-11-18 18:34:22,549 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:34:22,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:22,550 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] [2022-11-18 18:34:22,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:22,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:22,560 INFO L85 PathProgramCache]: Analyzing trace with hash -921359260, now seen corresponding path program 1 times [2022-11-18 18:34:22,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:22,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484267034] [2022-11-18 18:34:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:22,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:23,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:23,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484267034] [2022-11-18 18:34:23,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484267034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:23,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:23,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:23,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678805714] [2022-11-18 18:34:23,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:23,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:23,443 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-18 18:34:23,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 93 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:23,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:23,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-18 18:34:23,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:23,949 INFO L130 PetriNetUnfolder]: 520/1093 cut-off events. [2022-11-18 18:34:23,949 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-18 18:34:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 1093 events. 520/1093 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6354 event pairs, 96 based on Foata normal form. 102/754 useless extension candidates. Maximal degree in co-relation 1838. Up to 364 conditions per place. [2022-11-18 18:34:23,968 INFO L137 encePairwiseOnDemand]: 94/112 looper letters, 24 selfloop transitions, 11 changer transitions 1/102 dead transitions. [2022-11-18 18:34:23,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 102 transitions, 297 flow [2022-11-18 18:34:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:34:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2022-11-18 18:34:23,998 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-11-18 18:34:23,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2022-11-18 18:34:24,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2022-11-18 18:34:24,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:24,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2022-11-18 18:34:24,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,028 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,031 INFO L175 Difference]: Start difference. First operand has 96 places, 93 transitions, 198 flow. Second operand 5 states and 455 transitions. [2022-11-18 18:34:24,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 102 transitions, 297 flow [2022-11-18 18:34:24,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 102 transitions, 287 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 18:34:24,046 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 256 flow [2022-11-18 18:34:24,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2022-11-18 18:34:24,055 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 2 predicate places. [2022-11-18 18:34:24,056 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 256 flow [2022-11-18 18:34:24,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:24,057 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] [2022-11-18 18:34:24,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:34:24,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:24,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:24,061 INFO L85 PathProgramCache]: Analyzing trace with hash -921359259, now seen corresponding path program 1 times [2022-11-18 18:34:24,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:24,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995845324] [2022-11-18 18:34:24,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:24,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:24,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995845324] [2022-11-18 18:34:24,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995845324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:24,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:24,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:24,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489053927] [2022-11-18 18:34:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:24,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:24,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:24,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:24,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:24,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-18 18:34:24,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:24,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-18 18:34:24,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:24,531 INFO L130 PetriNetUnfolder]: 363/795 cut-off events. [2022-11-18 18:34:24,532 INFO L131 PetriNetUnfolder]: For 509/565 co-relation queries the response was YES. [2022-11-18 18:34:24,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1753 conditions, 795 events. 363/795 cut-off events. For 509/565 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4247 event pairs, 113 based on Foata normal form. 75/703 useless extension candidates. Maximal degree in co-relation 1632. Up to 489 conditions per place. [2022-11-18 18:34:24,545 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 22 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2022-11-18 18:34:24,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 286 flow [2022-11-18 18:34:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:24,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-11-18 18:34:24,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7924107142857143 [2022-11-18 18:34:24,548 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2022-11-18 18:34:24,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2022-11-18 18:34:24,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:24,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2022-11-18 18:34:24,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,554 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,555 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 256 flow. Second operand 4 states and 355 transitions. [2022-11-18 18:34:24,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 286 flow [2022-11-18 18:34:24,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 282 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:24,563 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 238 flow [2022-11-18 18:34:24,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2022-11-18 18:34:24,565 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 0 predicate places. [2022-11-18 18:34:24,566 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 238 flow [2022-11-18 18:34:24,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,567 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:24,568 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] [2022-11-18 18:34:24,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:34:24,568 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:24,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -921359225, now seen corresponding path program 1 times [2022-11-18 18:34:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:24,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286789141] [2022-11-18 18:34:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:24,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:24,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:24,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286789141] [2022-11-18 18:34:24,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286789141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:24,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:24,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 18:34:24,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676335265] [2022-11-18 18:34:24,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:24,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:24,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-18 18:34:24,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:24,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:24,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-18 18:34:24,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:25,042 INFO L130 PetriNetUnfolder]: 208/531 cut-off events. [2022-11-18 18:34:25,043 INFO L131 PetriNetUnfolder]: For 200/261 co-relation queries the response was YES. [2022-11-18 18:34:25,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 531 events. 208/531 cut-off events. For 200/261 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2829 event pairs, 40 based on Foata normal form. 12/461 useless extension candidates. Maximal degree in co-relation 1148. Up to 151 conditions per place. [2022-11-18 18:34:25,049 INFO L137 encePairwiseOnDemand]: 106/112 looper letters, 30 selfloop transitions, 5 changer transitions 0/101 dead transitions. [2022-11-18 18:34:25,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 101 transitions, 345 flow [2022-11-18 18:34:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:25,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:34:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-18 18:34:25,052 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-11-18 18:34:25,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-18 18:34:25,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-18 18:34:25,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:25,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-18 18:34:25,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,058 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,058 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 238 flow. Second operand 5 states and 440 transitions. [2022-11-18 18:34:25,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 101 transitions, 345 flow [2022-11-18 18:34:25,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 339 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:25,063 INFO L231 Difference]: Finished difference. Result has 99 places, 93 transitions, 258 flow [2022-11-18 18:34:25,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=99, PETRI_TRANSITIONS=93} [2022-11-18 18:34:25,065 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 3 predicate places. [2022-11-18 18:34:25,065 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 93 transitions, 258 flow [2022-11-18 18:34:25,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,066 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:25,066 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:25,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:34:25,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:25,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921272, now seen corresponding path program 1 times [2022-11-18 18:34:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:25,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876499396] [2022-11-18 18:34:25,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:25,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:25,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876499396] [2022-11-18 18:34:25,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876499396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:25,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:25,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:25,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444838295] [2022-11-18 18:34:25,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:25,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:25,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:25,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:25,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:25,272 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:25,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 93 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:25,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:25,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:25,484 INFO L130 PetriNetUnfolder]: 222/646 cut-off events. [2022-11-18 18:34:25,484 INFO L131 PetriNetUnfolder]: For 333/395 co-relation queries the response was YES. [2022-11-18 18:34:25,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1421 conditions, 646 events. 222/646 cut-off events. For 333/395 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3773 event pairs, 45 based on Foata normal form. 28/582 useless extension candidates. Maximal degree in co-relation 1068. Up to 150 conditions per place. [2022-11-18 18:34:25,492 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 35 selfloop transitions, 5 changer transitions 0/109 dead transitions. [2022-11-18 18:34:25,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 109 transitions, 404 flow [2022-11-18 18:34:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2022-11-18 18:34:25,494 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-18 18:34:25,495 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2022-11-18 18:34:25,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2022-11-18 18:34:25,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:25,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2022-11-18 18:34:25,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,503 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,504 INFO L175 Difference]: Start difference. First operand has 99 places, 93 transitions, 258 flow. Second operand 4 states and 378 transitions. [2022-11-18 18:34:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 109 transitions, 404 flow [2022-11-18 18:34:25,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 109 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:25,517 INFO L231 Difference]: Finished difference. Result has 102 places, 93 transitions, 275 flow [2022-11-18 18:34:25,519 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=275, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2022-11-18 18:34:25,520 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2022-11-18 18:34:25,521 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 275 flow [2022-11-18 18:34:25,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:25,522 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:34:25,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:25,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921307, now seen corresponding path program 1 times [2022-11-18 18:34:25,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:25,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461423754] [2022-11-18 18:34:25,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:25,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:25,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:25,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461423754] [2022-11-18 18:34:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461423754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:25,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:25,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727133031] [2022-11-18 18:34:25,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:25,698 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-18 18:34:25,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:25,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:25,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-18 18:34:25,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:26,010 INFO L130 PetriNetUnfolder]: 474/1266 cut-off events. [2022-11-18 18:34:26,010 INFO L131 PetriNetUnfolder]: For 601/607 co-relation queries the response was YES. [2022-11-18 18:34:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2648 conditions, 1266 events. 474/1266 cut-off events. For 601/607 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8659 event pairs, 112 based on Foata normal form. 19/1037 useless extension candidates. Maximal degree in co-relation 1450. Up to 454 conditions per place. [2022-11-18 18:34:26,025 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 25 selfloop transitions, 14 changer transitions 0/107 dead transitions. [2022-11-18 18:34:26,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 107 transitions, 406 flow [2022-11-18 18:34:26,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:26,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:34:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 533 transitions. [2022-11-18 18:34:26,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7931547619047619 [2022-11-18 18:34:26,029 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 533 transitions. [2022-11-18 18:34:26,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 533 transitions. [2022-11-18 18:34:26,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:26,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 533 transitions. [2022-11-18 18:34:26,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.83333333333333) internal successors, (533), 6 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,035 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,035 INFO L175 Difference]: Start difference. First operand has 102 places, 93 transitions, 275 flow. Second operand 6 states and 533 transitions. [2022-11-18 18:34:26,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 107 transitions, 406 flow [2022-11-18 18:34:26,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 107 transitions, 406 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 18:34:26,042 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 382 flow [2022-11-18 18:34:26,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=382, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2022-11-18 18:34:26,047 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 13 predicate places. [2022-11-18 18:34:26,047 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 382 flow [2022-11-18 18:34:26,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,048 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:26,048 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:26,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:34:26,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1880921306, now seen corresponding path program 1 times [2022-11-18 18:34:26,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:26,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113663010] [2022-11-18 18:34:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:26,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:26,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:26,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113663010] [2022-11-18 18:34:26,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113663010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:26,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:26,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:34:26,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090971589] [2022-11-18 18:34:26,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:26,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:34:26,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:26,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:34:26,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:34:26,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:26,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 102 transitions, 382 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:26,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:26,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:26,384 INFO L130 PetriNetUnfolder]: 350/1063 cut-off events. [2022-11-18 18:34:26,385 INFO L131 PetriNetUnfolder]: For 1197/1233 co-relation queries the response was YES. [2022-11-18 18:34:26,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1063 events. 350/1063 cut-off events. For 1197/1233 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 7096 event pairs, 27 based on Foata normal form. 68/911 useless extension candidates. Maximal degree in co-relation 2453. Up to 497 conditions per place. [2022-11-18 18:34:26,397 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 29 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-11-18 18:34:26,397 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 465 flow [2022-11-18 18:34:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:34:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:34:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 284 transitions. [2022-11-18 18:34:26,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8452380952380952 [2022-11-18 18:34:26,400 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 284 transitions. [2022-11-18 18:34:26,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 284 transitions. [2022-11-18 18:34:26,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:26,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 284 transitions. [2022-11-18 18:34:26,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,403 INFO L175 Difference]: Start difference. First operand has 109 places, 102 transitions, 382 flow. Second operand 3 states and 284 transitions. [2022-11-18 18:34:26,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 465 flow [2022-11-18 18:34:26,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:26,409 INFO L231 Difference]: Finished difference. Result has 107 places, 102 transitions, 403 flow [2022-11-18 18:34:26,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=403, PETRI_PLACES=107, PETRI_TRANSITIONS=102} [2022-11-18 18:34:26,412 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 11 predicate places. [2022-11-18 18:34:26,413 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 102 transitions, 403 flow [2022-11-18 18:34:26,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:26,413 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] [2022-11-18 18:34:26,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:34:26,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:26,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:26,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1505372937, now seen corresponding path program 1 times [2022-11-18 18:34:26,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:26,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256389655] [2022-11-18 18:34:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:26,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256389655] [2022-11-18 18:34:26,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256389655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:26,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:26,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:26,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139842895] [2022-11-18 18:34:26,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:34:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:34:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:34:26,541 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-18 18:34:26,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 102 transitions, 403 flow. Second operand has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:26,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-18 18:34:26,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:26,813 INFO L130 PetriNetUnfolder]: 411/1135 cut-off events. [2022-11-18 18:34:26,814 INFO L131 PetriNetUnfolder]: For 1467/1499 co-relation queries the response was YES. [2022-11-18 18:34:26,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1135 events. 411/1135 cut-off events. For 1467/1499 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7496 event pairs, 115 based on Foata normal form. 21/939 useless extension candidates. Maximal degree in co-relation 2791. Up to 398 conditions per place. [2022-11-18 18:34:26,827 INFO L137 encePairwiseOnDemand]: 102/112 looper letters, 31 selfloop transitions, 12 changer transitions 0/111 dead transitions. [2022-11-18 18:34:26,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 531 flow [2022-11-18 18:34:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:34:26,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:34:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 440 transitions. [2022-11-18 18:34:26,831 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-11-18 18:34:26,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 440 transitions. [2022-11-18 18:34:26,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 440 transitions. [2022-11-18 18:34:26,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:26,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 440 transitions. [2022-11-18 18:34:26,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,837 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,837 INFO L175 Difference]: Start difference. First operand has 107 places, 102 transitions, 403 flow. Second operand 5 states and 440 transitions. [2022-11-18 18:34:26,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 111 transitions, 531 flow [2022-11-18 18:34:26,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 524 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:26,844 INFO L231 Difference]: Finished difference. Result has 112 places, 105 transitions, 467 flow [2022-11-18 18:34:26,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=467, PETRI_PLACES=112, PETRI_TRANSITIONS=105} [2022-11-18 18:34:26,845 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 16 predicate places. [2022-11-18 18:34:26,845 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 105 transitions, 467 flow [2022-11-18 18:34:26,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:26,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:26,846 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] [2022-11-18 18:34:26,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:34:26,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:26,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:26,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1215398718, now seen corresponding path program 1 times [2022-11-18 18:34:26,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:26,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071791822] [2022-11-18 18:34:26,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:26,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:27,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071791822] [2022-11-18 18:34:27,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071791822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:27,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:27,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:27,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785001150] [2022-11-18 18:34:27,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:27,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:27,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:27,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-18 18:34:27,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 105 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:27,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:27,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-18 18:34:27,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:28,225 INFO L130 PetriNetUnfolder]: 2003/4034 cut-off events. [2022-11-18 18:34:28,226 INFO L131 PetriNetUnfolder]: For 6911/6911 co-relation queries the response was YES. [2022-11-18 18:34:28,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11641 conditions, 4034 events. 2003/4034 cut-off events. For 6911/6911 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 31292 event pairs, 213 based on Foata normal form. 78/3726 useless extension candidates. Maximal degree in co-relation 11405. Up to 1865 conditions per place. [2022-11-18 18:34:28,339 INFO L137 encePairwiseOnDemand]: 98/112 looper letters, 81 selfloop transitions, 20 changer transitions 0/151 dead transitions. [2022-11-18 18:34:28,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 151 transitions, 888 flow [2022-11-18 18:34:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2022-11-18 18:34:28,342 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6951530612244898 [2022-11-18 18:34:28,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2022-11-18 18:34:28,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2022-11-18 18:34:28,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:28,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2022-11-18 18:34:28,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:28,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:28,347 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:28,348 INFO L175 Difference]: Start difference. First operand has 112 places, 105 transitions, 467 flow. Second operand 7 states and 545 transitions. [2022-11-18 18:34:28,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 151 transitions, 888 flow [2022-11-18 18:34:28,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 878 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:28,357 INFO L231 Difference]: Finished difference. Result has 120 places, 114 transitions, 637 flow [2022-11-18 18:34:28,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=120, PETRI_TRANSITIONS=114} [2022-11-18 18:34:28,359 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 24 predicate places. [2022-11-18 18:34:28,359 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 114 transitions, 637 flow [2022-11-18 18:34:28,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:28,359 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:28,360 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] [2022-11-18 18:34:28,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:34:28,360 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:28,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1637249854, now seen corresponding path program 1 times [2022-11-18 18:34:28,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:28,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674070227] [2022-11-18 18:34:28,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:28,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:28,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:28,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674070227] [2022-11-18 18:34:28,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674070227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:28,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:28,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 18:34:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138863770] [2022-11-18 18:34:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:28,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:28,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:28,682 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-18 18:34:28,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 114 transitions, 637 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:28,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:28,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-18 18:34:28,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:30,475 INFO L130 PetriNetUnfolder]: 3660/7439 cut-off events. [2022-11-18 18:34:30,475 INFO L131 PetriNetUnfolder]: For 18808/18808 co-relation queries the response was YES. [2022-11-18 18:34:30,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22612 conditions, 7439 events. 3660/7439 cut-off events. For 18808/18808 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 64265 event pairs, 911 based on Foata normal form. 163/7196 useless extension candidates. Maximal degree in co-relation 17856. Up to 2701 conditions per place. [2022-11-18 18:34:30,571 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 95 selfloop transitions, 34 changer transitions 0/179 dead transitions. [2022-11-18 18:34:30,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 179 transitions, 1319 flow [2022-11-18 18:34:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 548 transitions. [2022-11-18 18:34:30,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6989795918367347 [2022-11-18 18:34:30,574 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 548 transitions. [2022-11-18 18:34:30,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 548 transitions. [2022-11-18 18:34:30,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:30,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 548 transitions. [2022-11-18 18:34:30,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 78.28571428571429) internal successors, (548), 7 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,586 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,586 INFO L175 Difference]: Start difference. First operand has 120 places, 114 transitions, 637 flow. Second operand 7 states and 548 transitions. [2022-11-18 18:34:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 179 transitions, 1319 flow [2022-11-18 18:34:30,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 179 transitions, 1295 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 18:34:30,635 INFO L231 Difference]: Finished difference. Result has 125 places, 136 transitions, 1016 flow [2022-11-18 18:34:30,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1016, PETRI_PLACES=125, PETRI_TRANSITIONS=136} [2022-11-18 18:34:30,636 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 29 predicate places. [2022-11-18 18:34:30,636 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 136 transitions, 1016 flow [2022-11-18 18:34:30,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:30,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:30,637 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:34:30,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 890264035, now seen corresponding path program 1 times [2022-11-18 18:34:30,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:30,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073640335] [2022-11-18 18:34:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:30,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:30,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:31,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:31,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073640335] [2022-11-18 18:34:31,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073640335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:31,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093603324] [2022-11-18 18:34:31,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:31,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:31,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:31,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:31,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:34:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:31,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:34:31,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:31,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:31,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:31,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093603324] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:31,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:31,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-18 18:34:31,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807662905] [2022-11-18 18:34:31,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:31,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:31,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:31,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:31,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:34:31,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-18 18:34:31,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 136 transitions, 1016 flow. Second operand has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:31,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:31,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-18 18:34:31,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:32,216 INFO L130 PetriNetUnfolder]: 719/2374 cut-off events. [2022-11-18 18:34:32,217 INFO L131 PetriNetUnfolder]: For 12185/12205 co-relation queries the response was YES. [2022-11-18 18:34:32,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7721 conditions, 2374 events. 719/2374 cut-off events. For 12185/12205 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 19709 event pairs, 45 based on Foata normal form. 30/2222 useless extension candidates. Maximal degree in co-relation 4774. Up to 695 conditions per place. [2022-11-18 18:34:32,253 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 67 selfloop transitions, 30 changer transitions 0/165 dead transitions. [2022-11-18 18:34:32,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 165 transitions, 1498 flow [2022-11-18 18:34:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:32,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:34:32,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 531 transitions. [2022-11-18 18:34:32,256 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7901785714285714 [2022-11-18 18:34:32,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 531 transitions. [2022-11-18 18:34:32,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 531 transitions. [2022-11-18 18:34:32,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:32,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 531 transitions. [2022-11-18 18:34:32,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 88.5) internal successors, (531), 6 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:32,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:32,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:32,263 INFO L175 Difference]: Start difference. First operand has 125 places, 136 transitions, 1016 flow. Second operand 6 states and 531 transitions. [2022-11-18 18:34:32,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 165 transitions, 1498 flow [2022-11-18 18:34:32,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 165 transitions, 1471 flow, removed 10 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:32,298 INFO L231 Difference]: Finished difference. Result has 130 places, 152 transitions, 1355 flow [2022-11-18 18:34:32,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1355, PETRI_PLACES=130, PETRI_TRANSITIONS=152} [2022-11-18 18:34:32,300 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 34 predicate places. [2022-11-18 18:34:32,300 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 152 transitions, 1355 flow [2022-11-18 18:34:32,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.83333333333333) internal successors, (503), 6 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:32,301 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:32,301 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:32,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:34:32,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:32,516 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1340907300, now seen corresponding path program 1 times [2022-11-18 18:34:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:32,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240105436] [2022-11-18 18:34:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:32,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:32,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240105436] [2022-11-18 18:34:32,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240105436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:32,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29626336] [2022-11-18 18:34:32,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:32,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:32,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:32,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:34:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:32,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:34:32,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:33,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:33,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29626336] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:33,414 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:33,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-11-18 18:34:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006266396] [2022-11-18 18:34:33,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 18:34:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 18:34:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:34:33,418 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 112 [2022-11-18 18:34:33,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 152 transitions, 1355 flow. Second operand has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:33,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:33,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 112 [2022-11-18 18:34:33,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:37,631 INFO L130 PetriNetUnfolder]: 8730/17513 cut-off events. [2022-11-18 18:34:37,631 INFO L131 PetriNetUnfolder]: For 90307/90309 co-relation queries the response was YES. [2022-11-18 18:34:37,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60006 conditions, 17513 events. 8730/17513 cut-off events. For 90307/90309 co-relation queries the response was YES. Maximal size of possible extension queue 1040. Compared 170511 event pairs, 1119 based on Foata normal form. 531/17139 useless extension candidates. Maximal degree in co-relation 59687. Up to 3284 conditions per place. [2022-11-18 18:34:37,836 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 169 selfloop transitions, 94 changer transitions 0/313 dead transitions. [2022-11-18 18:34:37,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 313 transitions, 3225 flow [2022-11-18 18:34:37,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:34:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:34:37,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 953 transitions. [2022-11-18 18:34:37,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7090773809523809 [2022-11-18 18:34:37,840 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 953 transitions. [2022-11-18 18:34:37,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 953 transitions. [2022-11-18 18:34:37,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:37,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 953 transitions. [2022-11-18 18:34:37,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 79.41666666666667) internal successors, (953), 12 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:37,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:37,848 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 112.0) internal successors, (1456), 13 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:37,848 INFO L175 Difference]: Start difference. First operand has 130 places, 152 transitions, 1355 flow. Second operand 12 states and 953 transitions. [2022-11-18 18:34:37,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 313 transitions, 3225 flow [2022-11-18 18:34:37,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 313 transitions, 3207 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-18 18:34:37,985 INFO L231 Difference]: Finished difference. Result has 145 places, 211 transitions, 2628 flow [2022-11-18 18:34:37,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=1343, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2628, PETRI_PLACES=145, PETRI_TRANSITIONS=211} [2022-11-18 18:34:37,986 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 49 predicate places. [2022-11-18 18:34:37,986 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 211 transitions, 2628 flow [2022-11-18 18:34:37,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5) internal successors, (1112), 16 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:37,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:37,988 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:37,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:38,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:34:38,195 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:38,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash -35046155, now seen corresponding path program 1 times [2022-11-18 18:34:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:38,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996191406] [2022-11-18 18:34:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:38,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:38,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:38,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996191406] [2022-11-18 18:34:38,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996191406] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:38,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074763688] [2022-11-18 18:34:38,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:38,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:38,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:38,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:38,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:34:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:38,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:34:38,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:38,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:38,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:39,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074763688] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:39,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:34:39,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 17 [2022-11-18 18:34:39,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133390300] [2022-11-18 18:34:39,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:39,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:34:39,070 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 112 [2022-11-18 18:34:39,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 211 transitions, 2628 flow. Second operand has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:39,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:39,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 112 [2022-11-18 18:34:39,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:40,459 INFO L130 PetriNetUnfolder]: 1954/6416 cut-off events. [2022-11-18 18:34:40,460 INFO L131 PetriNetUnfolder]: For 72813/73283 co-relation queries the response was YES. [2022-11-18 18:34:40,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25425 conditions, 6416 events. 1954/6416 cut-off events. For 72813/73283 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 66404 event pairs, 167 based on Foata normal form. 263/6151 useless extension candidates. Maximal degree in co-relation 15965. Up to 1277 conditions per place. [2022-11-18 18:34:40,552 INFO L137 encePairwiseOnDemand]: 99/112 looper letters, 130 selfloop transitions, 105 changer transitions 0/303 dead transitions. [2022-11-18 18:34:40,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 303 transitions, 4505 flow [2022-11-18 18:34:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:34:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:34:40,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 625 transitions. [2022-11-18 18:34:40,561 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7971938775510204 [2022-11-18 18:34:40,561 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 625 transitions. [2022-11-18 18:34:40,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 625 transitions. [2022-11-18 18:34:40,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:40,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 625 transitions. [2022-11-18 18:34:40,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:40,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:40,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:40,570 INFO L175 Difference]: Start difference. First operand has 145 places, 211 transitions, 2628 flow. Second operand 7 states and 625 transitions. [2022-11-18 18:34:40,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 303 transitions, 4505 flow [2022-11-18 18:34:40,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 303 transitions, 4228 flow, removed 134 selfloop flow, removed 4 redundant places. [2022-11-18 18:34:40,755 INFO L231 Difference]: Finished difference. Result has 151 places, 273 transitions, 4011 flow [2022-11-18 18:34:40,756 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4011, PETRI_PLACES=151, PETRI_TRANSITIONS=273} [2022-11-18 18:34:40,759 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 55 predicate places. [2022-11-18 18:34:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 273 transitions, 4011 flow [2022-11-18 18:34:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 83.57142857142857) internal successors, (585), 7 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:40,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:40,760 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:40,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:40,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:34:40,966 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:40,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:40,967 INFO L85 PathProgramCache]: Analyzing trace with hash 308947103, now seen corresponding path program 1 times [2022-11-18 18:34:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:40,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459896815] [2022-11-18 18:34:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:34:41,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:41,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459896815] [2022-11-18 18:34:41,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459896815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:41,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:41,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:41,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192869464] [2022-11-18 18:34:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:41,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:41,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:41,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:41,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:41,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 273 transitions, 4011 flow. Second operand has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:41,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:41,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:41,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:42,208 INFO L130 PetriNetUnfolder]: 1376/4685 cut-off events. [2022-11-18 18:34:42,208 INFO L131 PetriNetUnfolder]: For 43367/43624 co-relation queries the response was YES. [2022-11-18 18:34:42,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18011 conditions, 4685 events. 1376/4685 cut-off events. For 43367/43624 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 48921 event pairs, 231 based on Foata normal form. 248/4498 useless extension candidates. Maximal degree in co-relation 17742. Up to 969 conditions per place. [2022-11-18 18:34:42,256 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 230 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-18 18:34:42,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 311 transitions, 5087 flow [2022-11-18 18:34:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:42,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:42,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 379 transitions. [2022-11-18 18:34:42,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8459821428571429 [2022-11-18 18:34:42,264 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 379 transitions. [2022-11-18 18:34:42,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 379 transitions. [2022-11-18 18:34:42,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:42,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 379 transitions. [2022-11-18 18:34:42,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.75) internal successors, (379), 4 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,271 INFO L175 Difference]: Start difference. First operand has 151 places, 273 transitions, 4011 flow. Second operand 4 states and 379 transitions. [2022-11-18 18:34:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 311 transitions, 5087 flow [2022-11-18 18:34:42,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 311 transitions, 4855 flow, removed 53 selfloop flow, removed 7 redundant places. [2022-11-18 18:34:42,390 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 3045 flow [2022-11-18 18:34:42,390 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3045, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2022-11-18 18:34:42,392 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-11-18 18:34:42,392 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 3045 flow [2022-11-18 18:34:42,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:42,393 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 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] [2022-11-18 18:34:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:34:42,393 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1004956634, now seen corresponding path program 1 times [2022-11-18 18:34:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:42,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758862190] [2022-11-18 18:34:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:42,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:42,569 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:34:42,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:42,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758862190] [2022-11-18 18:34:42,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758862190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:42,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:42,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:34:42,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125493857] [2022-11-18 18:34:42,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:42,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:42,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:42,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:42,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 3045 flow. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:42,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:42,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:42,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:43,672 INFO L130 PetriNetUnfolder]: 829/3058 cut-off events. [2022-11-18 18:34:43,672 INFO L131 PetriNetUnfolder]: For 24032/24032 co-relation queries the response was YES. [2022-11-18 18:34:43,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11430 conditions, 3058 events. 829/3058 cut-off events. For 24032/24032 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 28955 event pairs, 164 based on Foata normal form. 18/2798 useless extension candidates. Maximal degree in co-relation 11167. Up to 727 conditions per place. [2022-11-18 18:34:43,723 INFO L137 encePairwiseOnDemand]: 107/112 looper letters, 174 selfloop transitions, 7 changer transitions 0/254 dead transitions. [2022-11-18 18:34:43,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 254 transitions, 3764 flow [2022-11-18 18:34:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:43,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:43,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-18 18:34:43,726 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8370535714285714 [2022-11-18 18:34:43,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-18 18:34:43,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-18 18:34:43,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:43,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-18 18:34:43,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:43,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:43,730 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:43,730 INFO L175 Difference]: Start difference. First operand has 150 places, 230 transitions, 3045 flow. Second operand 4 states and 375 transitions. [2022-11-18 18:34:43,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 254 transitions, 3764 flow [2022-11-18 18:34:43,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 254 transitions, 3595 flow, removed 57 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:43,805 INFO L231 Difference]: Finished difference. Result has 152 places, 200 transitions, 2357 flow [2022-11-18 18:34:43,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=152, PETRI_TRANSITIONS=200} [2022-11-18 18:34:43,806 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 56 predicate places. [2022-11-18 18:34:43,806 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 200 transitions, 2357 flow [2022-11-18 18:34:43,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:43,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:43,807 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-18 18:34:43,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:34:43,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:43,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:43,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2003609093, now seen corresponding path program 1 times [2022-11-18 18:34:43,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:43,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082498988] [2022-11-18 18:34:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:43,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 18:34:43,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:43,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082498988] [2022-11-18 18:34:43,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082498988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:34:43,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:34:43,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:34:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250220545] [2022-11-18 18:34:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:34:43,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:34:43,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:43,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:34:43,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:34:43,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:43,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 200 transitions, 2357 flow. Second operand has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:43,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:43,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:43,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:44,870 INFO L130 PetriNetUnfolder]: 653/3260 cut-off events. [2022-11-18 18:34:44,870 INFO L131 PetriNetUnfolder]: For 23239/23305 co-relation queries the response was YES. [2022-11-18 18:34:44,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 3260 events. 653/3260 cut-off events. For 23239/23305 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 30985 event pairs, 29 based on Foata normal form. 62/3029 useless extension candidates. Maximal degree in co-relation 10996. Up to 723 conditions per place. [2022-11-18 18:34:44,893 INFO L137 encePairwiseOnDemand]: 103/112 looper letters, 84 selfloop transitions, 56 changer transitions 1/217 dead transitions. [2022-11-18 18:34:44,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 217 transitions, 2815 flow [2022-11-18 18:34:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:34:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 18:34:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-18 18:34:44,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8392857142857143 [2022-11-18 18:34:44,896 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-18 18:34:44,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-18 18:34:44,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:44,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-18 18:34:44,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:44,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:44,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:44,900 INFO L175 Difference]: Start difference. First operand has 152 places, 200 transitions, 2357 flow. Second operand 4 states and 376 transitions. [2022-11-18 18:34:44,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 217 transitions, 2815 flow [2022-11-18 18:34:44,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 217 transitions, 2803 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-18 18:34:44,965 INFO L231 Difference]: Finished difference. Result has 156 places, 209 transitions, 2740 flow [2022-11-18 18:34:44,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2292, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2740, PETRI_PLACES=156, PETRI_TRANSITIONS=209} [2022-11-18 18:34:44,966 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 60 predicate places. [2022-11-18 18:34:44,966 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 209 transitions, 2740 flow [2022-11-18 18:34:44,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:44,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:44,967 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2022-11-18 18:34:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:34:44,967 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:44,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1898853759, now seen corresponding path program 2 times [2022-11-18 18:34:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:44,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873305197] [2022-11-18 18:34:44,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:44,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:45,146 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:34:45,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:45,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873305197] [2022-11-18 18:34:45,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873305197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:45,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121034378] [2022-11-18 18:34:45,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:34:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:45,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:45,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:45,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:34:45,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:34:45,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:34:45,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 18:34:45,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:34:45,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:45,635 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 18:34:45,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121034378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:45,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:45,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2022-11-18 18:34:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197108348] [2022-11-18 18:34:45,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:45,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:34:45,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:34:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:34:45,638 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 112 [2022-11-18 18:34:45,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 209 transitions, 2740 flow. Second operand has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:45,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:45,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 112 [2022-11-18 18:34:45,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:46,210 INFO L130 PetriNetUnfolder]: 593/2590 cut-off events. [2022-11-18 18:34:46,210 INFO L131 PetriNetUnfolder]: For 26573/26626 co-relation queries the response was YES. [2022-11-18 18:34:46,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9895 conditions, 2590 events. 593/2590 cut-off events. For 26573/26626 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 22634 event pairs, 64 based on Foata normal form. 78/2461 useless extension candidates. Maximal degree in co-relation 8841. Up to 352 conditions per place. [2022-11-18 18:34:46,235 INFO L137 encePairwiseOnDemand]: 100/112 looper letters, 24 selfloop transitions, 126 changer transitions 0/223 dead transitions. [2022-11-18 18:34:46,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 223 transitions, 3135 flow [2022-11-18 18:34:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:34:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 18:34:46,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 709 transitions. [2022-11-18 18:34:46,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7912946428571429 [2022-11-18 18:34:46,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 709 transitions. [2022-11-18 18:34:46,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 709 transitions. [2022-11-18 18:34:46,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:46,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 709 transitions. [2022-11-18 18:34:46,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 88.625) internal successors, (709), 8 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:46,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:46,247 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 112.0) internal successors, (1008), 9 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:46,247 INFO L175 Difference]: Start difference. First operand has 156 places, 209 transitions, 2740 flow. Second operand 8 states and 709 transitions. [2022-11-18 18:34:46,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 223 transitions, 3135 flow [2022-11-18 18:34:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 3096 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-18 18:34:46,322 INFO L231 Difference]: Finished difference. Result has 160 places, 213 transitions, 3147 flow [2022-11-18 18:34:46,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3147, PETRI_PLACES=160, PETRI_TRANSITIONS=213} [2022-11-18 18:34:46,323 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 64 predicate places. [2022-11-18 18:34:46,324 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 213 transitions, 3147 flow [2022-11-18 18:34:46,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 84.85714285714286) internal successors, (594), 7 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:46,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:34:46,325 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 3, 3, 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] [2022-11-18 18:34:46,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:46,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 18:34:46,531 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-18 18:34:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:34:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash 431723148, now seen corresponding path program 1 times [2022-11-18 18:34:46,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:34:46,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909493304] [2022-11-18 18:34:46,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:46,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:34:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:46,683 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:46,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:34:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909493304] [2022-11-18 18:34:46,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909493304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:34:46,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944737401] [2022-11-18 18:34:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:34:46,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:34:46,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:34:46,686 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:34:46,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:34:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:34:46,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 18:34:46,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:34:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:46,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:34:46,988 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:34:46,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944737401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:34:46,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:34:46,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-11-18 18:34:46,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575406851] [2022-11-18 18:34:46,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:34:46,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:34:46,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:34:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:34:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:34:46,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 112 [2022-11-18 18:34:46,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 213 transitions, 3147 flow. Second operand has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:46,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:34:46,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 112 [2022-11-18 18:34:46,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:34:47,716 INFO L130 PetriNetUnfolder]: 538/2797 cut-off events. [2022-11-18 18:34:47,717 INFO L131 PetriNetUnfolder]: For 28572/28644 co-relation queries the response was YES. [2022-11-18 18:34:47,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10363 conditions, 2797 events. 538/2797 cut-off events. For 28572/28644 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 26199 event pairs, 21 based on Foata normal form. 78/2622 useless extension candidates. Maximal degree in co-relation 10087. Up to 340 conditions per place. [2022-11-18 18:34:47,745 INFO L137 encePairwiseOnDemand]: 104/112 looper letters, 0 selfloop transitions, 0 changer transitions 215/215 dead transitions. [2022-11-18 18:34:47,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 215 transitions, 3103 flow [2022-11-18 18:34:47,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:34:47,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 18:34:47,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 557 transitions. [2022-11-18 18:34:47,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8288690476190477 [2022-11-18 18:34:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 557 transitions. [2022-11-18 18:34:47,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 557 transitions. [2022-11-18 18:34:47,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:34:47,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 557 transitions. [2022-11-18 18:34:47,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:47,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:47,754 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:47,755 INFO L175 Difference]: Start difference. First operand has 160 places, 213 transitions, 3147 flow. Second operand 6 states and 557 transitions. [2022-11-18 18:34:47,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 215 transitions, 3103 flow [2022-11-18 18:34:47,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 215 transitions, 2752 flow, removed 52 selfloop flow, removed 13 redundant places. [2022-11-18 18:34:47,830 INFO L231 Difference]: Finished difference. Result has 150 places, 0 transitions, 0 flow [2022-11-18 18:34:47,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=112, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=150, PETRI_TRANSITIONS=0} [2022-11-18 18:34:47,831 INFO L288 CegarLoopForPetriNet]: 96 programPoint places, 54 predicate places. [2022-11-18 18:34:47,831 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 0 transitions, 0 flow [2022-11-18 18:34:47,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 88.0) internal successors, (528), 6 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 18:34:47,835 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-11-18 18:34:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-18 18:34:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-18 18:34:47,836 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-18 18:34:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-18 18:34:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-18 18:34:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-18 18:34:47,837 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-18 18:34:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 19 remaining) [2022-11-18 18:34:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2022-11-18 18:34:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-11-18 18:34:47,838 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-18 18:34:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-18 18:34:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-18 18:34:47,839 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-18 18:34:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-18 18:34:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-18 18:34:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-18 18:34:47,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-18 18:34:47,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:34:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 18:34:48,047 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:34:48,053 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 18:34:48,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 18:34:48,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 06:34:48 BasicIcfg [2022-11-18 18:34:48,060 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 18:34:48,061 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 18:34:48,061 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 18:34:48,061 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 18:34:48,062 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:34:22" (3/4) ... [2022-11-18 18:34:48,065 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 18:34:48,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 18:34:48,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 18:34:48,072 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 18:34:48,077 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-18 18:34:48,078 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 18:34:48,078 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 18:34:48,078 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 18:34:48,140 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 18:34:48,141 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 18:34:48,146 INFO L158 Benchmark]: Toolchain (without parser) took 27148.17ms. Allocated memory was 115.3MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 77.4MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 625.0MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,147 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:34:48,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.53ms. Allocated memory is still 115.3MB. Free memory was 77.2MB in the beginning and 89.5MB in the end (delta: -12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,147 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.63ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 87.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,148 INFO L158 Benchmark]: Boogie Preprocessor took 74.22ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 86.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 18:34:48,148 INFO L158 Benchmark]: RCFGBuilder took 713.12ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 69.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,149 INFO L158 Benchmark]: TraceAbstraction took 25872.14ms. Allocated memory was 115.3MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 68.0MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 612.9MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,155 INFO L158 Benchmark]: Witness Printer took 84.77ms. Allocated memory is still 3.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 18:34:48,157 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 344.53ms. Allocated memory is still 115.3MB. Free memory was 77.2MB in the beginning and 89.5MB in the end (delta: -12.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.63ms. Allocated memory is still 115.3MB. Free memory was 89.0MB in the beginning and 87.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.22ms. Allocated memory is still 115.3MB. Free memory was 87.4MB in the beginning and 86.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 713.12ms. Allocated memory is still 115.3MB. Free memory was 86.3MB in the beginning and 69.1MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 25872.14ms. Allocated memory was 115.3MB in the beginning and 3.8GB in the end (delta: 3.7GB). Free memory was 68.0MB in the beginning and 3.2GB in the end (delta: -3.1GB). Peak memory consumption was 612.9MB. Max. memory is 16.1GB. * Witness Printer took 84.77ms. Allocated memory is still 3.8GB. Free memory was 3.2GB in the beginning and 3.2GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 53]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 141 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.7s, OverallIterations: 17, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 556 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 556 mSDsluCounter, 343 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 213 mSDsCounter, 236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1307 IncrementalHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 236 mSolverCounterUnsat, 130 mSDtfsCounter, 1307 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 660 SyntacticMatches, 15 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4011occurred in iteration=12, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1285 NumberOfCodeBlocks, 1285 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1598 ConstructedInterpolants, 0 QuantifiedInterpolants, 6634 SizeOfPredicates, 16 NumberOfNonLiveVariables, 846 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 27 InterpolantComputations, 14 PerfectInterpolantSequences, 240/326 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 18:34:48,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df289f2d-06ae-4d85-8bee-a70e8b63b839/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE