./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:22:57,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:22:57,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:22:57,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:22:57,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:22:57,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:22:57,386 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:22:57,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:22:57,389 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:22:57,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:22:57,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:22:57,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:22:57,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:22:57,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:22:57,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:22:57,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:22:57,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:22:57,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:22:57,414 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:22:57,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:22:57,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:22:57,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:22:57,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:22:57,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:22:57,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:22:57,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:22:57,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:22:57,442 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:22:57,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:22:57,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:22:57,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:22:57,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:22:57,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:22:57,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:22:57,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:22:57,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:22:57,452 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:22:57,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:22:57,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:22:57,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:22:57,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:22:57,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:22:57,502 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:22:57,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:22:57,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:22:57,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:22:57,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:22:57,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:22:57,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:22:57,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:22:57,506 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:22:57,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:22:57,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:22:57,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:22:57,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:22:57,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:22:57,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:22:57,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:22:57,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:22:57,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:22:57,509 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:22:57,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:22:57,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:22:57,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:22:57,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:22:57,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:22:57,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:22:57,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:22:57,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:57,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:22:57,511 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:22:57,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:22:57,512 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:22:57,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:22:57,512 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:22:57,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:22:57,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:22:57,513 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_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-16 12:22:57,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:22:57,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:22:57,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:22:57,919 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:22:57,920 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:22:57,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-16 12:22:57,996 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/data/35890fc7f/7d8186e5b3b14cbca520fd37094db8af/FLAGa4d0f4658 [2022-11-16 12:22:58,518 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:22:58,518 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-16 12:22:58,524 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/data/35890fc7f/7d8186e5b3b14cbca520fd37094db8af/FLAGa4d0f4658 [2022-11-16 12:22:58,862 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/data/35890fc7f/7d8186e5b3b14cbca520fd37094db8af [2022-11-16 12:22:58,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:22:58,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:22:58,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:58,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:22:58,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:22:58,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:58" (1/1) ... [2022-11-16 12:22:58,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f5ccfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:58, skipping insertion in model container [2022-11-16 12:22:58,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:22:58" (1/1) ... [2022-11-16 12:22:58,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:22:58,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:22:59,123 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-16 12:22:59,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:22:59,147 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:22:59,169 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-16 12:22:59,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:22:59,188 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:22:59,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59 WrapperNode [2022-11-16 12:22:59,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:22:59,189 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:22:59,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:22:59,190 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:22:59,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,230 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 125 [2022-11-16 12:22:59,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:22:59,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:22:59,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:22:59,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:22:59,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,260 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,262 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:22:59,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:22:59,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:22:59,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:22:59,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (1/1) ... [2022-11-16 12:22:59,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:22:59,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:22:59,305 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:22:59,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:22:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:22:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:22:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:22:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:22:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:22:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:22:59,369 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:22:59,369 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:22:59,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:22:59,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:22:59,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:22:59,372 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:22:59,536 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:22:59,538 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:23:00,028 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:23:00,085 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:23:00,085 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-16 12:23:00,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:00 BoogieIcfgContainer [2022-11-16 12:23:00,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:23:00,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:23:00,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:23:00,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:23:00,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:22:58" (1/3) ... [2022-11-16 12:23:00,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4653139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:00, skipping insertion in model container [2022-11-16 12:23:00,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:22:59" (2/3) ... [2022-11-16 12:23:00,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4653139d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:23:00, skipping insertion in model container [2022-11-16 12:23:00,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:23:00" (3/3) ... [2022-11-16 12:23:00,097 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-16 12:23:00,106 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:23:00,116 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:23:00,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:23:00,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:23:00,220 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:23:00,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 205 transitions, 434 flow [2022-11-16 12:23:00,373 INFO L130 PetriNetUnfolder]: 16/202 cut-off events. [2022-11-16 12:23:00,373 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:23:00,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 202 events. 16/202 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 182 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 158. Up to 3 conditions per place. [2022-11-16 12:23:00,380 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 205 transitions, 434 flow [2022-11-16 12:23:00,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 181 transitions, 377 flow [2022-11-16 12:23:00,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:23:00,403 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;@2c09a04b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:23:00,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-16 12:23:00,423 INFO L130 PetriNetUnfolder]: 3/59 cut-off events. [2022-11-16 12:23:00,423 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:23:00,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:00,424 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:00,425 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:00,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:00,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1373238829, now seen corresponding path program 1 times [2022-11-16 12:23:00,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:00,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229496414] [2022-11-16 12:23:00,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:00,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:00,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229496414] [2022-11-16 12:23:00,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229496414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:00,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:00,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629772413] [2022-11-16 12:23:00,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:00,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:01,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-16 12:23:01,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 181 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:01,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-16 12:23:01,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:01,333 INFO L130 PetriNetUnfolder]: 37/396 cut-off events. [2022-11-16 12:23:01,333 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-16 12:23:01,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526 conditions, 396 events. 37/396 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1338 event pairs, 14 based on Foata normal form. 46/386 useless extension candidates. Maximal degree in co-relation 277. Up to 52 conditions per place. [2022-11-16 12:23:01,340 INFO L137 encePairwiseOnDemand]: 183/205 looper letters, 46 selfloop transitions, 9 changer transitions 4/196 dead transitions. [2022-11-16 12:23:01,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 196 transitions, 532 flow [2022-11-16 12:23:01,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:01,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 883 transitions. [2022-11-16 12:23:01,359 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8614634146341463 [2022-11-16 12:23:01,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 883 transitions. [2022-11-16 12:23:01,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 883 transitions. [2022-11-16 12:23:01,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:01,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 883 transitions. [2022-11-16 12:23:01,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.6) internal successors, (883), 5 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,382 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,384 INFO L175 Difference]: Start difference. First operand has 176 places, 181 transitions, 377 flow. Second operand 5 states and 883 transitions. [2022-11-16 12:23:01,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 196 transitions, 532 flow [2022-11-16 12:23:01,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 196 transitions, 514 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:01,395 INFO L231 Difference]: Finished difference. Result has 178 places, 175 transitions, 409 flow [2022-11-16 12:23:01,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=178, PETRI_TRANSITIONS=175} [2022-11-16 12:23:01,401 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 2 predicate places. [2022-11-16 12:23:01,401 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 175 transitions, 409 flow [2022-11-16 12:23:01,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,402 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:01,402 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:01,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:23:01,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:01,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1740074927, now seen corresponding path program 1 times [2022-11-16 12:23:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:01,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512328189] [2022-11-16 12:23:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:01,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:01,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512328189] [2022-11-16 12:23:01,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512328189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:01,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590370250] [2022-11-16 12:23:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:01,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:01,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:01,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:23:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:01,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:01,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:01,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:01,876 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:01,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590370250] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:01,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:01,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:23:01,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249883264] [2022-11-16 12:23:01,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:01,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:23:01,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:01,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:23:01,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:23:01,884 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-16 12:23:01,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 175 transitions, 409 flow. Second operand has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:01,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:01,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-16 12:23:01,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:02,474 INFO L130 PetriNetUnfolder]: 91/885 cut-off events. [2022-11-16 12:23:02,474 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2022-11-16 12:23:02,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 885 events. 91/885 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4624 event pairs, 35 based on Foata normal form. 6/771 useless extension candidates. Maximal degree in co-relation 764. Up to 45 conditions per place. [2022-11-16 12:23:02,484 INFO L137 encePairwiseOnDemand]: 190/205 looper letters, 91 selfloop transitions, 40 changer transitions 0/268 dead transitions. [2022-11-16 12:23:02,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 268 transitions, 931 flow [2022-11-16 12:23:02,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:23:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:23:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3053 transitions. [2022-11-16 12:23:02,491 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8273712737127371 [2022-11-16 12:23:02,491 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3053 transitions. [2022-11-16 12:23:02,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3053 transitions. [2022-11-16 12:23:02,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:02,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3053 transitions. [2022-11-16 12:23:02,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 169.61111111111111) internal successors, (3053), 18 states have internal predecessors, (3053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,510 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 205.0) internal successors, (3895), 19 states have internal predecessors, (3895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,510 INFO L175 Difference]: Start difference. First operand has 178 places, 175 transitions, 409 flow. Second operand 18 states and 3053 transitions. [2022-11-16 12:23:02,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 268 transitions, 931 flow [2022-11-16 12:23:02,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 268 transitions, 926 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:02,517 INFO L231 Difference]: Finished difference. Result has 194 places, 202 transitions, 642 flow [2022-11-16 12:23:02,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=642, PETRI_PLACES=194, PETRI_TRANSITIONS=202} [2022-11-16 12:23:02,518 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-16 12:23:02,519 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 202 transitions, 642 flow [2022-11-16 12:23:02,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 164.66666666666666) internal successors, (1976), 12 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:02,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:02,521 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:02,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 12:23:02,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:02,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1892252465, now seen corresponding path program 1 times [2022-11-16 12:23:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:02,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702850849] [2022-11-16 12:23:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702850849] [2022-11-16 12:23:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702850849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594555695] [2022-11-16 12:23:02,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:02,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:02,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:23:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:02,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:23:02,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:03,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:03,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594555695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:03,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:03,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:23:03,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465010231] [2022-11-16 12:23:03,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:03,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:23:03,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:03,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:23:03,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:23:03,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 205 [2022-11-16 12:23:03,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 202 transitions, 642 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:03,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:03,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 205 [2022-11-16 12:23:03,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:03,335 INFO L130 PetriNetUnfolder]: 91/877 cut-off events. [2022-11-16 12:23:03,335 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2022-11-16 12:23:03,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1236 conditions, 877 events. 91/877 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4589 event pairs, 35 based on Foata normal form. 8/765 useless extension candidates. Maximal degree in co-relation 957. Up to 136 conditions per place. [2022-11-16 12:23:03,344 INFO L137 encePairwiseOnDemand]: 194/205 looper letters, 47 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2022-11-16 12:23:03,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 211 transitions, 780 flow [2022-11-16 12:23:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:23:03,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:23:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1189 transitions. [2022-11-16 12:23:03,347 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8285714285714286 [2022-11-16 12:23:03,347 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1189 transitions. [2022-11-16 12:23:03,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1189 transitions. [2022-11-16 12:23:03,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:03,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1189 transitions. [2022-11-16 12:23:03,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 169.85714285714286) internal successors, (1189), 7 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:03,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:03,355 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:03,355 INFO L175 Difference]: Start difference. First operand has 194 places, 202 transitions, 642 flow. Second operand 7 states and 1189 transitions. [2022-11-16 12:23:03,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 211 transitions, 780 flow [2022-11-16 12:23:03,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 211 transitions, 706 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:03,367 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 568 flow [2022-11-16 12:23:03,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2022-11-16 12:23:03,370 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 13 predicate places. [2022-11-16 12:23:03,371 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 568 flow [2022-11-16 12:23:03,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:03,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:03,372 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:03,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:03,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:03,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:03,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -930740547, now seen corresponding path program 2 times [2022-11-16 12:23:03,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:03,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965110947] [2022-11-16 12:23:03,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:03,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:03,906 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:03,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:03,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965110947] [2022-11-16 12:23:03,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965110947] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:03,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854128514] [2022-11-16 12:23:03,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:23:03,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:03,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:03,908 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:03,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:23:04,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:23:04,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:23:04,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:23:04,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:04,167 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:23:04,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:04,340 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-11-16 12:23:04,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854128514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:04,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:04,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:23:04,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566538377] [2022-11-16 12:23:04,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:23:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:04,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:23:04,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:23:04,349 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 205 [2022-11-16 12:23:04,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 568 flow. Second operand has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:04,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:04,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 205 [2022-11-16 12:23:04,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:05,923 INFO L130 PetriNetUnfolder]: 1289/4409 cut-off events. [2022-11-16 12:23:05,923 INFO L131 PetriNetUnfolder]: For 271/271 co-relation queries the response was YES. [2022-11-16 12:23:05,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 4409 events. 1289/4409 cut-off events. For 271/271 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 34909 event pairs, 721 based on Foata normal form. 4/3125 useless extension candidates. Maximal degree in co-relation 5444. Up to 287 conditions per place. [2022-11-16 12:23:05,959 INFO L137 encePairwiseOnDemand]: 186/205 looper letters, 169 selfloop transitions, 53 changer transitions 0/338 dead transitions. [2022-11-16 12:23:05,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 338 transitions, 1378 flow [2022-11-16 12:23:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:23:05,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:23:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3586 transitions. [2022-11-16 12:23:05,967 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7288617886178862 [2022-11-16 12:23:05,967 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3586 transitions. [2022-11-16 12:23:05,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3586 transitions. [2022-11-16 12:23:05,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:05,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3586 transitions. [2022-11-16 12:23:05,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 149.41666666666666) internal successors, (3586), 24 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:05,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:05,987 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:05,987 INFO L175 Difference]: Start difference. First operand has 189 places, 194 transitions, 568 flow. Second operand 24 states and 3586 transitions. [2022-11-16 12:23:05,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 338 transitions, 1378 flow [2022-11-16 12:23:05,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 338 transitions, 1320 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:23:05,995 INFO L231 Difference]: Finished difference. Result has 202 places, 204 transitions, 673 flow [2022-11-16 12:23:05,995 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=673, PETRI_PLACES=202, PETRI_TRANSITIONS=204} [2022-11-16 12:23:05,996 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 26 predicate places. [2022-11-16 12:23:05,996 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 204 transitions, 673 flow [2022-11-16 12:23:05,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 143.61111111111111) internal successors, (2585), 18 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:05,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:05,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:06,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 12:23:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:06,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:06,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash -735123009, now seen corresponding path program 1 times [2022-11-16 12:23:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:06,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200928037] [2022-11-16 12:23:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:06,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:06,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200928037] [2022-11-16 12:23:06,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200928037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:06,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:06,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:06,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42425534] [2022-11-16 12:23:06,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:06,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:06,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:06,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:06,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:06,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-16 12:23:06,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 204 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:06,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:06,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-16 12:23:06,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:07,585 INFO L130 PetriNetUnfolder]: 1723/6096 cut-off events. [2022-11-16 12:23:07,585 INFO L131 PetriNetUnfolder]: For 191/219 co-relation queries the response was YES. [2022-11-16 12:23:07,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9466 conditions, 6096 events. 1723/6096 cut-off events. For 191/219 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 55518 event pairs, 721 based on Foata normal form. 0/4927 useless extension candidates. Maximal degree in co-relation 1314. Up to 1492 conditions per place. [2022-11-16 12:23:07,653 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 36 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-16 12:23:07,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 226 transitions, 808 flow [2022-11-16 12:23:07,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:07,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-16 12:23:07,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8946341463414634 [2022-11-16 12:23:07,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-16 12:23:07,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-16 12:23:07,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:07,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-16 12:23:07,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,664 INFO L175 Difference]: Start difference. First operand has 202 places, 204 transitions, 673 flow. Second operand 5 states and 917 transitions. [2022-11-16 12:23:07,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 226 transitions, 808 flow [2022-11-16 12:23:07,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 226 transitions, 729 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-16 12:23:07,671 INFO L231 Difference]: Finished difference. Result has 194 places, 207 transitions, 624 flow [2022-11-16 12:23:07,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=624, PETRI_PLACES=194, PETRI_TRANSITIONS=207} [2022-11-16 12:23:07,672 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 18 predicate places. [2022-11-16 12:23:07,673 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 207 transitions, 624 flow [2022-11-16 12:23:07,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:07,674 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:07,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:23:07,674 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:07,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:07,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2101151496, now seen corresponding path program 1 times [2022-11-16 12:23:07,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:07,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587682992] [2022-11-16 12:23:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:07,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:07,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:07,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587682992] [2022-11-16 12:23:07,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587682992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:07,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:07,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16731381] [2022-11-16 12:23:07,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:07,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:07,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:07,828 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-16 12:23:07,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 207 transitions, 624 flow. Second operand has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:07,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:07,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-16 12:23:07,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:08,618 INFO L130 PetriNetUnfolder]: 1240/3373 cut-off events. [2022-11-16 12:23:08,618 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2022-11-16 12:23:08,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6181 conditions, 3373 events. 1240/3373 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 30618 event pairs, 644 based on Foata normal form. 0/2764 useless extension candidates. Maximal degree in co-relation 4290. Up to 1317 conditions per place. [2022-11-16 12:23:08,661 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 33 selfloop transitions, 4 changer transitions 0/226 dead transitions. [2022-11-16 12:23:08,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 226 transitions, 746 flow [2022-11-16 12:23:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:08,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:08,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 914 transitions. [2022-11-16 12:23:08,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8917073170731707 [2022-11-16 12:23:08,664 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 914 transitions. [2022-11-16 12:23:08,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 914 transitions. [2022-11-16 12:23:08,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:08,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 914 transitions. [2022-11-16 12:23:08,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.8) internal successors, (914), 5 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:08,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:08,669 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:08,669 INFO L175 Difference]: Start difference. First operand has 194 places, 207 transitions, 624 flow. Second operand 5 states and 914 transitions. [2022-11-16 12:23:08,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 226 transitions, 746 flow [2022-11-16 12:23:08,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 226 transitions, 744 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:08,675 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 652 flow [2022-11-16 12:23:08,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=652, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2022-11-16 12:23:08,676 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 24 predicate places. [2022-11-16 12:23:08,676 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 652 flow [2022-11-16 12:23:08,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:08,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:08,677 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:08,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:23:08,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:08,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:08,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1511048489, now seen corresponding path program 1 times [2022-11-16 12:23:08,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:08,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48689008] [2022-11-16 12:23:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:08,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:08,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:08,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48689008] [2022-11-16 12:23:08,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48689008] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:08,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376388302] [2022-11-16 12:23:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:08,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:08,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:08,873 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:08,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:23:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:08,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:23:09,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:09,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:09,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376388302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:09,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:09,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 12:23:09,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310789701] [2022-11-16 12:23:09,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:09,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:09,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:09,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:09,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:09,169 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-16 12:23:09,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 210 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:09,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:09,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-16 12:23:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:13,621 INFO L130 PetriNetUnfolder]: 6623/21712 cut-off events. [2022-11-16 12:23:13,621 INFO L131 PetriNetUnfolder]: For 4075/4351 co-relation queries the response was YES. [2022-11-16 12:23:13,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41220 conditions, 21712 events. 6623/21712 cut-off events. For 4075/4351 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 249919 event pairs, 5622 based on Foata normal form. 0/18814 useless extension candidates. Maximal degree in co-relation 25261. Up to 7744 conditions per place. [2022-11-16 12:23:13,813 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 123 selfloop transitions, 23 changer transitions 0/283 dead transitions. [2022-11-16 12:23:13,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 283 transitions, 1164 flow [2022-11-16 12:23:13,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:23:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1753 transitions. [2022-11-16 12:23:13,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7773835920177383 [2022-11-16 12:23:13,819 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1753 transitions. [2022-11-16 12:23:13,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1753 transitions. [2022-11-16 12:23:13,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:13,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1753 transitions. [2022-11-16 12:23:13,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,830 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:13,830 INFO L175 Difference]: Start difference. First operand has 200 places, 210 transitions, 652 flow. Second operand 11 states and 1753 transitions. [2022-11-16 12:23:13,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 283 transitions, 1164 flow [2022-11-16 12:23:14,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 283 transitions, 1162 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:14,012 INFO L231 Difference]: Finished difference. Result has 212 places, 217 transitions, 741 flow [2022-11-16 12:23:14,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=741, PETRI_PLACES=212, PETRI_TRANSITIONS=217} [2022-11-16 12:23:14,013 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 36 predicate places. [2022-11-16 12:23:14,013 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 217 transitions, 741 flow [2022-11-16 12:23:14,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.57142857142858) internal successors, (1068), 7 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:14,014 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:14,014 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:14,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:14,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:14,221 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1831345133, now seen corresponding path program 1 times [2022-11-16 12:23:14,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:14,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886138048] [2022-11-16 12:23:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:14,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886138048] [2022-11-16 12:23:14,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886138048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:14,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:14,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:23:14,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314320935] [2022-11-16 12:23:14,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:14,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:23:14,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:23:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:23:14,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 205 [2022-11-16 12:23:14,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 217 transitions, 741 flow. Second operand has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 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) [2022-11-16 12:23:14,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:14,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 205 [2022-11-16 12:23:14,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:16,329 INFO L130 PetriNetUnfolder]: 3706/9078 cut-off events. [2022-11-16 12:23:16,330 INFO L131 PetriNetUnfolder]: For 2209/2209 co-relation queries the response was YES. [2022-11-16 12:23:16,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16212 conditions, 9078 events. 3706/9078 cut-off events. For 2209/2209 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 93066 event pairs, 1813 based on Foata normal form. 0/7506 useless extension candidates. Maximal degree in co-relation 12574. Up to 3608 conditions per place. [2022-11-16 12:23:16,398 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 32 selfloop transitions, 4 changer transitions 0/235 dead transitions. [2022-11-16 12:23:16,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 235 transitions, 855 flow [2022-11-16 12:23:16,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:23:16,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:23:16,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2022-11-16 12:23:16,401 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8907317073170732 [2022-11-16 12:23:16,402 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2022-11-16 12:23:16,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2022-11-16 12:23:16,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:16,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2022-11-16 12:23:16,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:16,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:16,408 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:16,408 INFO L175 Difference]: Start difference. First operand has 212 places, 217 transitions, 741 flow. Second operand 5 states and 913 transitions. [2022-11-16 12:23:16,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 235 transitions, 855 flow [2022-11-16 12:23:16,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 235 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:23:16,416 INFO L231 Difference]: Finished difference. Result has 217 places, 220 transitions, 766 flow [2022-11-16 12:23:16,417 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=766, PETRI_PLACES=217, PETRI_TRANSITIONS=220} [2022-11-16 12:23:16,417 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 41 predicate places. [2022-11-16 12:23:16,417 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 220 transitions, 766 flow [2022-11-16 12:23:16,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.25) internal successors, (709), 4 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) [2022-11-16 12:23:16,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:16,418 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:16,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:23:16,419 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:16,419 INFO L85 PathProgramCache]: Analyzing trace with hash 248813458, now seen corresponding path program 1 times [2022-11-16 12:23:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:16,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693968089] [2022-11-16 12:23:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:16,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:16,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:23:16,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:16,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693968089] [2022-11-16 12:23:16,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693968089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:16,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:23:16,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:23:16,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132471977] [2022-11-16 12:23:16,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:16,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:16,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:16,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:16,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:23:16,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-16 12:23:16,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 220 transitions, 766 flow. Second operand has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:16,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:16,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-16 12:23:16,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:20,608 INFO L130 PetriNetUnfolder]: 8718/20691 cut-off events. [2022-11-16 12:23:20,609 INFO L131 PetriNetUnfolder]: For 8099/8267 co-relation queries the response was YES. [2022-11-16 12:23:20,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42746 conditions, 20691 events. 8718/20691 cut-off events. For 8099/8267 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 220840 event pairs, 7760 based on Foata normal form. 168/17878 useless extension candidates. Maximal degree in co-relation 26335. Up to 12466 conditions per place. [2022-11-16 12:23:20,818 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 111 selfloop transitions, 23 changer transitions 4/280 dead transitions. [2022-11-16 12:23:20,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 280 transitions, 1231 flow [2022-11-16 12:23:20,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:20,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:23:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1745 transitions. [2022-11-16 12:23:20,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738359201773836 [2022-11-16 12:23:20,824 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1745 transitions. [2022-11-16 12:23:20,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1745 transitions. [2022-11-16 12:23:20,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:20,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1745 transitions. [2022-11-16 12:23:20,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.63636363636363) internal successors, (1745), 11 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,835 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,835 INFO L175 Difference]: Start difference. First operand has 217 places, 220 transitions, 766 flow. Second operand 11 states and 1745 transitions. [2022-11-16 12:23:20,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 280 transitions, 1231 flow [2022-11-16 12:23:20,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 280 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:23:20,928 INFO L231 Difference]: Finished difference. Result has 228 places, 222 transitions, 826 flow [2022-11-16 12:23:20,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=826, PETRI_PLACES=228, PETRI_TRANSITIONS=222} [2022-11-16 12:23:20,929 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 52 predicate places. [2022-11-16 12:23:20,929 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 222 transitions, 826 flow [2022-11-16 12:23:20,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:20,930 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:20,930 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:20,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:23:20,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:20,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:20,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1434114038, now seen corresponding path program 1 times [2022-11-16 12:23:20,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:20,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600366467] [2022-11-16 12:23:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:20,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:23:21,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:21,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600366467] [2022-11-16 12:23:21,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600366467] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:21,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788298780] [2022-11-16 12:23:21,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:21,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:21,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:21,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:21,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:23:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:21,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:23:21,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:23:21,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:23:21,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788298780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:23:21,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:23:21,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 12:23:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987780042] [2022-11-16 12:23:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:23:21,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:23:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:23:21,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:23:21,408 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 205 [2022-11-16 12:23:21,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 222 transitions, 826 flow. Second operand has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:21,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:21,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 205 [2022-11-16 12:23:21,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:25,524 INFO L130 PetriNetUnfolder]: 8678/20445 cut-off events. [2022-11-16 12:23:25,524 INFO L131 PetriNetUnfolder]: For 11579/11705 co-relation queries the response was YES. [2022-11-16 12:23:25,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43473 conditions, 20445 events. 8678/20445 cut-off events. For 11579/11705 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 215823 event pairs, 7519 based on Foata normal form. 126/18461 useless extension candidates. Maximal degree in co-relation 24788. Up to 12214 conditions per place. [2022-11-16 12:23:25,740 INFO L137 encePairwiseOnDemand]: 191/205 looper letters, 61 selfloop transitions, 15 changer transitions 58/274 dead transitions. [2022-11-16 12:23:25,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 1257 flow [2022-11-16 12:23:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:23:25,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:23:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1737 transitions. [2022-11-16 12:23:25,746 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7702882483370288 [2022-11-16 12:23:25,746 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1737 transitions. [2022-11-16 12:23:25,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1737 transitions. [2022-11-16 12:23:25,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:25,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1737 transitions. [2022-11-16 12:23:25,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.9090909090909) internal successors, (1737), 11 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,757 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 205.0) internal successors, (2460), 12 states have internal predecessors, (2460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,758 INFO L175 Difference]: Start difference. First operand has 228 places, 222 transitions, 826 flow. Second operand 11 states and 1737 transitions. [2022-11-16 12:23:25,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 1257 flow [2022-11-16 12:23:25,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 274 transitions, 1235 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:23:25,847 INFO L231 Difference]: Finished difference. Result has 237 places, 212 transitions, 768 flow [2022-11-16 12:23:25,848 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=768, PETRI_PLACES=237, PETRI_TRANSITIONS=212} [2022-11-16 12:23:25,848 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 61 predicate places. [2022-11-16 12:23:25,849 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 212 transitions, 768 flow [2022-11-16 12:23:25,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:25,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:25,850 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:25,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:26,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:23:26,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:26,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2030240487, now seen corresponding path program 1 times [2022-11-16 12:23:26,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:26,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161600786] [2022-11-16 12:23:26,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:23:26,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161600786] [2022-11-16 12:23:26,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161600786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:26,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45134794] [2022-11-16 12:23:26,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:26,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:26,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:26,184 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:26,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:23:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:26,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:23:26,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:26,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:26,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45134794] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:26,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:26,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 12:23:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415049522] [2022-11-16 12:23:26,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:26,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:23:26,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:26,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:23:26,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:23:26,987 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-16 12:23:26,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 212 transitions, 768 flow. Second operand has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:26,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:26,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-16 12:23:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:37,220 INFO L130 PetriNetUnfolder]: 22426/48566 cut-off events. [2022-11-16 12:23:37,221 INFO L131 PetriNetUnfolder]: For 30528/30703 co-relation queries the response was YES. [2022-11-16 12:23:37,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113642 conditions, 48566 events. 22426/48566 cut-off events. For 30528/30703 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 547169 event pairs, 6085 based on Foata normal form. 662/47613 useless extension candidates. Maximal degree in co-relation 72939. Up to 7023 conditions per place. [2022-11-16 12:23:37,727 INFO L137 encePairwiseOnDemand]: 179/205 looper letters, 298 selfloop transitions, 62 changer transitions 0/476 dead transitions. [2022-11-16 12:23:37,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 476 transitions, 2428 flow [2022-11-16 12:23:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:23:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 12:23:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4879 transitions. [2022-11-16 12:23:37,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7 [2022-11-16 12:23:37,737 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4879 transitions. [2022-11-16 12:23:37,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4879 transitions. [2022-11-16 12:23:37,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:37,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4879 transitions. [2022-11-16 12:23:37,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 143.5) internal successors, (4879), 34 states have internal predecessors, (4879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:37,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:37,761 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 205.0) internal successors, (7175), 35 states have internal predecessors, (7175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:37,761 INFO L175 Difference]: Start difference. First operand has 237 places, 212 transitions, 768 flow. Second operand 34 states and 4879 transitions. [2022-11-16 12:23:37,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 476 transitions, 2428 flow [2022-11-16 12:23:38,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 476 transitions, 2107 flow, removed 100 selfloop flow, removed 18 redundant places. [2022-11-16 12:23:38,333 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 1007 flow [2022-11-16 12:23:38,333 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1007, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2022-11-16 12:23:38,334 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 70 predicate places. [2022-11-16 12:23:38,334 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 1007 flow [2022-11-16 12:23:38,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 138.8695652173913) internal successors, (3194), 23 states have internal predecessors, (3194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:38,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:38,336 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:38,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:23:38,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:38,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:38,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 598071202, now seen corresponding path program 1 times [2022-11-16 12:23:38,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:38,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372902611] [2022-11-16 12:23:38,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:38,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:38,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:38,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372902611] [2022-11-16 12:23:38,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372902611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:38,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320737444] [2022-11-16 12:23:38,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:38,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:38,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:38,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:38,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:23:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:38,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:23:38,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:39,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:39,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320737444] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:39,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:39,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 24 [2022-11-16 12:23:39,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685992369] [2022-11-16 12:23:39,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:39,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:23:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:23:39,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:23:39,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-16 12:23:39,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 1007 flow. Second operand has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:39,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:39,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-16 12:23:39,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:23:48,117 INFO L130 PetriNetUnfolder]: 20534/40641 cut-off events. [2022-11-16 12:23:48,117 INFO L131 PetriNetUnfolder]: For 19602/22240 co-relation queries the response was YES. [2022-11-16 12:23:48,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95548 conditions, 40641 events. 20534/40641 cut-off events. For 19602/22240 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 438718 event pairs, 13656 based on Foata normal form. 2638/37100 useless extension candidates. Maximal degree in co-relation 74225. Up to 20348 conditions per place. [2022-11-16 12:23:48,602 INFO L137 encePairwiseOnDemand]: 181/205 looper letters, 221 selfloop transitions, 58 changer transitions 12/419 dead transitions. [2022-11-16 12:23:48,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 419 transitions, 2183 flow [2022-11-16 12:23:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:23:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 12:23:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3986 transitions. [2022-11-16 12:23:48,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.694425087108014 [2022-11-16 12:23:48,609 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3986 transitions. [2022-11-16 12:23:48,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3986 transitions. [2022-11-16 12:23:48,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:23:48,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3986 transitions. [2022-11-16 12:23:48,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 142.35714285714286) internal successors, (3986), 28 states have internal predecessors, (3986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,630 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 205.0) internal successors, (5945), 29 states have internal predecessors, (5945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,631 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 1007 flow. Second operand 28 states and 3986 transitions. [2022-11-16 12:23:48,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 419 transitions, 2183 flow [2022-11-16 12:23:48,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 419 transitions, 2134 flow, removed 4 selfloop flow, removed 8 redundant places. [2022-11-16 12:23:48,877 INFO L231 Difference]: Finished difference. Result has 268 places, 258 transitions, 1158 flow [2022-11-16 12:23:48,878 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1158, PETRI_PLACES=268, PETRI_TRANSITIONS=258} [2022-11-16 12:23:48,880 INFO L288 CegarLoopForPetriNet]: 176 programPoint places, 92 predicate places. [2022-11-16 12:23:48,880 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 258 transitions, 1158 flow [2022-11-16 12:23:48,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 137.75) internal successors, (3306), 24 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:48,881 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:23:48,882 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:23:48,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:23:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,087 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-16 12:23:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:23:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1101178854, now seen corresponding path program 1 times [2022-11-16 12:23:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:23:49,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922650015] [2022-11-16 12:23:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:23:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:23:49,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:23:49,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922650015] [2022-11-16 12:23:49,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922650015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:23:49,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280003602] [2022-11-16 12:23:49,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:23:49,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:23:49,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:23:49,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:23:49,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f250138-0755-48a9-ace0-da91fd355bfe/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:23:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:23:49,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:23:49,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:23:49,659 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:49,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:23:49,995 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:23:49,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280003602] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:23:49,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:23:49,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 12:23:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606818112] [2022-11-16 12:23:49,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:23:49,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 12:23:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:23:49,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 12:23:49,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 12:23:49,999 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 205 [2022-11-16 12:23:50,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 258 transitions, 1158 flow. Second operand has 23 states, 23 states have (on average 139.2608695652174) internal successors, (3203), 23 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:23:50,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:23:50,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 205 [2022-11-16 12:23:50,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand