./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN --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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- 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-6b4ec56 [2022-11-20 11:39:41,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:39:41,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:39:41,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:39:41,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:39:41,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:39:41,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:39:41,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:39:41,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:39:41,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:39:41,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:39:41,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:39:41,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:39:41,985 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:39:41,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:39:41,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:39:41,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:39:41,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:39:42,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:39:42,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:39:42,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:39:42,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:39:42,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:39:42,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:39:42,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:39:42,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:39:42,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:39:42,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:39:42,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:39:42,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:39:42,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:39:42,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:39:42,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:39:42,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:39:42,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:39:42,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:39:42,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:39:42,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:39:42,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:39:42,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:39:42,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:39:42,042 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 11:39:42,081 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:39:42,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:39:42,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:39:42,083 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:39:42,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:39:42,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:39:42,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:39:42,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:39:42,085 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:39:42,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:39:42,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:39:42,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:39:42,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:39:42,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:39:42,088 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:39:42,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:39:42,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:39:42,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:39:42,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:39:42,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:39:42,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:39:42,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:39:42,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:39:42,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:39:42,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:39:42,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:39:42,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:39:42,091 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:39:42,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:39:42,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:39:42,092 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_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-20 11:39:42,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:39:42,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:39:42,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:39:42,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:39:42,499 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:39:42,500 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-20 11:39:45,590 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:39:45,829 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:39:45,830 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-20 11:39:45,838 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/data/387d31149/42260231e1a140c4af6ce83228ae3efb/FLAG690868af1 [2022-11-20 11:39:45,855 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/data/387d31149/42260231e1a140c4af6ce83228ae3efb [2022-11-20 11:39:45,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:39:45,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:39:45,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:39:45,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:39:45,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:39:45,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:45" (1/1) ... [2022-11-20 11:39:45,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d28cee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:45, skipping insertion in model container [2022-11-20 11:39:45,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:45" (1/1) ... [2022-11-20 11:39:45,879 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:39:45,904 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:39:46,161 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-20 11:39:46,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:39:46,174 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:39:46,209 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-20 11:39:46,210 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:39:46,226 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:39:46,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46 WrapperNode [2022-11-20 11:39:46,227 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:39:46,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:39:46,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:39:46,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:39:46,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,279 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 267 [2022-11-20 11:39:46,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:39:46,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:39:46,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:39:46,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:39:46,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,311 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:39:46,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:39:46,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:39:46,318 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:39:46,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (1/1) ... [2022-11-20 11:39:46,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:39:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:39:46,356 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:39:46,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_969526f1-1e63-4d5b-b8f8-4f3efb554b08/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:39:46,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:39:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:39:46,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:39:46,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:39:46,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:39:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 11:39:46,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 11:39:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:39:46,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:39:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:39:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 11:39:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 11:39:46,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:39:46,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:39:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:39:46,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:39:46,422 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:39:46,539 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:39:46,541 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:39:47,017 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:39:47,311 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:39:47,312 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:39:47,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:47 BoogieIcfgContainer [2022-11-20 11:39:47,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:39:47,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:39:47,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:39:47,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:39:47,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:39:45" (1/3) ... [2022-11-20 11:39:47,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49986908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:47, skipping insertion in model container [2022-11-20 11:39:47,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:46" (2/3) ... [2022-11-20 11:39:47,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49986908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:39:47, skipping insertion in model container [2022-11-20 11:39:47,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:39:47" (3/3) ... [2022-11-20 11:39:47,345 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-20 11:39:47,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:39:47,365 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:39:47,365 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 11:39:47,365 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:39:47,544 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 11:39:47,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 163 transitions, 350 flow [2022-11-20 11:39:47,705 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-20 11:39:47,706 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 11:39:47,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 160 events. 2/160 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 160 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 115. Up to 2 conditions per place. [2022-11-20 11:39:47,711 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 163 transitions, 350 flow [2022-11-20 11:39:47,717 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 139 transitions, 293 flow [2022-11-20 11:39:47,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:39:47,735 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;@1c2c9ece, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:39:47,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-11-20 11:39:47,770 INFO L130 PetriNetUnfolder]: 1/71 cut-off events. [2022-11-20 11:39:47,770 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 11:39:47,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:39:47,771 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] [2022-11-20 11:39:47,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:39:47,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:47,778 INFO L85 PathProgramCache]: Analyzing trace with hash -933514393, now seen corresponding path program 1 times [2022-11-20 11:39:47,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:47,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61509575] [2022-11-20 11:39:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:47,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:47,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:48,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61509575] [2022-11-20 11:39:48,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61509575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:48,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:48,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:39:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650750686] [2022-11-20 11:39:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:39:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:48,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:39:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:39:48,835 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:39:48,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:48,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:39:48,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:39:48,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:39:51,410 INFO L130 PetriNetUnfolder]: 5127/9650 cut-off events. [2022-11-20 11:39:51,411 INFO L131 PetriNetUnfolder]: For 780/780 co-relation queries the response was YES. [2022-11-20 11:39:51,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18230 conditions, 9650 events. 5127/9650 cut-off events. For 780/780 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 75892 event pairs, 2566 based on Foata normal form. 1/7797 useless extension candidates. Maximal degree in co-relation 16646. Up to 5207 conditions per place. [2022-11-20 11:39:51,569 INFO L137 encePairwiseOnDemand]: 143/163 looper letters, 94 selfloop transitions, 19 changer transitions 2/201 dead transitions. [2022-11-20 11:39:51,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 201 transitions, 668 flow [2022-11-20 11:39:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:39:51,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:39:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 839 transitions. [2022-11-20 11:39:51,596 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7353198948290973 [2022-11-20 11:39:51,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 839 transitions. [2022-11-20 11:39:51,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 839 transitions. [2022-11-20 11:39:51,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:39:51,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 839 transitions. [2022-11-20 11:39:51,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 119.85714285714286) internal successors, (839), 7 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:51,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:51,624 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:51,626 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 293 flow. Second operand 7 states and 839 transitions. [2022-11-20 11:39:51,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 201 transitions, 668 flow [2022-11-20 11:39:51,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 201 transitions, 648 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:39:51,656 INFO L231 Difference]: Finished difference. Result has 153 places, 149 transitions, 412 flow [2022-11-20 11:39:51,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=412, PETRI_PLACES=153, PETRI_TRANSITIONS=149} [2022-11-20 11:39:51,667 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 5 predicate places. [2022-11-20 11:39:51,668 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 149 transitions, 412 flow [2022-11-20 11:39:51,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 104.0) internal successors, (728), 7 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:51,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:39:51,670 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] [2022-11-20 11:39:51,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:39:51,671 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:39:51,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:51,672 INFO L85 PathProgramCache]: Analyzing trace with hash -538230451, now seen corresponding path program 1 times [2022-11-20 11:39:51,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042247048] [2022-11-20 11:39:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:51,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042247048] [2022-11-20 11:39:51,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042247048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:51,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:51,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:39:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408752839] [2022-11-20 11:39:51,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:51,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:39:51,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:39:51,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:39:51,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-20 11:39:51,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 149 transitions, 412 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:51,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:39:51,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-20 11:39:51,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:39:53,667 INFO L130 PetriNetUnfolder]: 4177/7873 cut-off events. [2022-11-20 11:39:53,668 INFO L131 PetriNetUnfolder]: For 3249/3249 co-relation queries the response was YES. [2022-11-20 11:39:53,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18398 conditions, 7873 events. 4177/7873 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 59935 event pairs, 2337 based on Foata normal form. 174/7157 useless extension candidates. Maximal degree in co-relation 6179. Up to 5983 conditions per place. [2022-11-20 11:39:53,746 INFO L137 encePairwiseOnDemand]: 154/163 looper letters, 80 selfloop transitions, 7 changer transitions 0/176 dead transitions. [2022-11-20 11:39:53,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 176 transitions, 689 flow [2022-11-20 11:39:53,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:39:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:39:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 738 transitions. [2022-11-20 11:39:53,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754601226993865 [2022-11-20 11:39:53,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 738 transitions. [2022-11-20 11:39:53,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 738 transitions. [2022-11-20 11:39:53,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:39:53,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 738 transitions. [2022-11-20 11:39:53,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.0) internal successors, (738), 6 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:53,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:53,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:53,758 INFO L175 Difference]: Start difference. First operand has 153 places, 149 transitions, 412 flow. Second operand 6 states and 738 transitions. [2022-11-20 11:39:53,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 176 transitions, 689 flow [2022-11-20 11:39:53,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 176 transitions, 685 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 11:39:53,773 INFO L231 Difference]: Finished difference. Result has 154 places, 149 transitions, 427 flow [2022-11-20 11:39:53,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=427, PETRI_PLACES=154, PETRI_TRANSITIONS=149} [2022-11-20 11:39:53,775 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 6 predicate places. [2022-11-20 11:39:53,776 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 149 transitions, 427 flow [2022-11-20 11:39:53,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:53,777 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:39:53,777 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] [2022-11-20 11:39:53,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:39:53,777 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:39:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:53,780 INFO L85 PathProgramCache]: Analyzing trace with hash -350813456, now seen corresponding path program 1 times [2022-11-20 11:39:53,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:53,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395238023] [2022-11-20 11:39:53,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:53,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:54,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:54,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:54,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395238023] [2022-11-20 11:39:54,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395238023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:54,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:54,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:39:54,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382596282] [2022-11-20 11:39:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:54,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:39:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:39:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:39:54,084 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-20 11:39:54,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 149 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:54,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:39:54,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-20 11:39:54,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:39:55,583 INFO L130 PetriNetUnfolder]: 3241/7272 cut-off events. [2022-11-20 11:39:55,583 INFO L131 PetriNetUnfolder]: For 3818/4292 co-relation queries the response was YES. [2022-11-20 11:39:55,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16081 conditions, 7272 events. 3241/7272 cut-off events. For 3818/4292 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 63133 event pairs, 1350 based on Foata normal form. 210/6504 useless extension candidates. Maximal degree in co-relation 15459. Up to 2759 conditions per place. [2022-11-20 11:39:55,659 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 115 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-20 11:39:55,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 228 transitions, 929 flow [2022-11-20 11:39:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:39:55,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:39:55,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 880 transitions. [2022-11-20 11:39:55,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7712532865907099 [2022-11-20 11:39:55,664 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 880 transitions. [2022-11-20 11:39:55,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 880 transitions. [2022-11-20 11:39:55,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:39:55,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 880 transitions. [2022-11-20 11:39:55,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 125.71428571428571) internal successors, (880), 7 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:55,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:55,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:55,675 INFO L175 Difference]: Start difference. First operand has 154 places, 149 transitions, 427 flow. Second operand 7 states and 880 transitions. [2022-11-20 11:39:55,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 228 transitions, 929 flow [2022-11-20 11:39:55,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 228 transitions, 918 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:39:55,698 INFO L231 Difference]: Finished difference. Result has 160 places, 156 transitions, 502 flow [2022-11-20 11:39:55,699 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=502, PETRI_PLACES=160, PETRI_TRANSITIONS=156} [2022-11-20 11:39:55,705 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 12 predicate places. [2022-11-20 11:39:55,706 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 156 transitions, 502 flow [2022-11-20 11:39:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.66666666666667) internal successors, (670), 6 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:55,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:39:55,707 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] [2022-11-20 11:39:55,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:39:55,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:39:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -350813455, now seen corresponding path program 1 times [2022-11-20 11:39:55,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:55,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405971805] [2022-11-20 11:39:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:55,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:55,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:55,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405971805] [2022-11-20 11:39:55,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405971805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:55,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:55,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:39:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663341517] [2022-11-20 11:39:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:55,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:39:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:55,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:39:55,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:39:55,909 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-20 11:39:55,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 156 transitions, 502 flow. Second operand has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:55,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:39:55,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-20 11:39:55,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:39:57,265 INFO L130 PetriNetUnfolder]: 3002/6643 cut-off events. [2022-11-20 11:39:57,265 INFO L131 PetriNetUnfolder]: For 4592/5056 co-relation queries the response was YES. [2022-11-20 11:39:57,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16127 conditions, 6643 events. 3002/6643 cut-off events. For 4592/5056 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 55797 event pairs, 1699 based on Foata normal form. 355/6566 useless extension candidates. Maximal degree in co-relation 14829. Up to 3468 conditions per place. [2022-11-20 11:39:57,343 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 69 selfloop transitions, 7 changer transitions 0/175 dead transitions. [2022-11-20 11:39:57,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 175 transitions, 713 flow [2022-11-20 11:39:57,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:39:57,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:39:57,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 632 transitions. [2022-11-20 11:39:57,348 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7754601226993865 [2022-11-20 11:39:57,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 632 transitions. [2022-11-20 11:39:57,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 632 transitions. [2022-11-20 11:39:57,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:39:57,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 632 transitions. [2022-11-20 11:39:57,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:57,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:57,362 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:57,363 INFO L175 Difference]: Start difference. First operand has 160 places, 156 transitions, 502 flow. Second operand 5 states and 632 transitions. [2022-11-20 11:39:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 175 transitions, 713 flow [2022-11-20 11:39:57,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 175 transitions, 694 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:39:57,397 INFO L231 Difference]: Finished difference. Result has 158 places, 154 transitions, 487 flow [2022-11-20 11:39:57,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2022-11-20 11:39:57,401 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 10 predicate places. [2022-11-20 11:39:57,402 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 487 flow [2022-11-20 11:39:57,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:57,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:39:57,403 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] [2022-11-20 11:39:57,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:39:57,403 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:39:57,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:57,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1712472656, now seen corresponding path program 1 times [2022-11-20 11:39:57,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:57,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393196025] [2022-11-20 11:39:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:57,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:39:58,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:58,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393196025] [2022-11-20 11:39:58,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393196025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:58,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:58,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:39:58,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036787420] [2022-11-20 11:39:58,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:58,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:39:58,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:58,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:39:58,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:39:58,217 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:39:58,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 487 flow. Second operand has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:39:58,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:39:58,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:39:58,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:01,002 INFO L130 PetriNetUnfolder]: 7897/15008 cut-off events. [2022-11-20 11:40:01,002 INFO L131 PetriNetUnfolder]: For 10396/10685 co-relation queries the response was YES. [2022-11-20 11:40:01,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37364 conditions, 15008 events. 7897/15008 cut-off events. For 10396/10685 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 127187 event pairs, 880 based on Foata normal form. 249/14828 useless extension candidates. Maximal degree in co-relation 28634. Up to 5149 conditions per place. [2022-11-20 11:40:01,161 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 146 selfloop transitions, 30 changer transitions 0/263 dead transitions. [2022-11-20 11:40:01,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 263 transitions, 1257 flow [2022-11-20 11:40:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:40:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:40:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1066 transitions. [2022-11-20 11:40:01,165 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7266530334014997 [2022-11-20 11:40:01,165 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1066 transitions. [2022-11-20 11:40:01,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1066 transitions. [2022-11-20 11:40:01,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:01,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1066 transitions. [2022-11-20 11:40:01,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.44444444444444) internal successors, (1066), 9 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:01,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:01,173 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:01,174 INFO L175 Difference]: Start difference. First operand has 158 places, 154 transitions, 487 flow. Second operand 9 states and 1066 transitions. [2022-11-20 11:40:01,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 263 transitions, 1257 flow [2022-11-20 11:40:01,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 263 transitions, 1243 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:40:01,201 INFO L231 Difference]: Finished difference. Result has 167 places, 176 transitions, 717 flow [2022-11-20 11:40:01,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=717, PETRI_PLACES=167, PETRI_TRANSITIONS=176} [2022-11-20 11:40:01,205 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 19 predicate places. [2022-11-20 11:40:01,205 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 176 transitions, 717 flow [2022-11-20 11:40:01,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.8) internal successors, (1038), 10 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:01,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:01,206 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] [2022-11-20 11:40:01,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:40:01,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:01,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1752056683, now seen corresponding path program 1 times [2022-11-20 11:40:01,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:01,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197219082] [2022-11-20 11:40:01,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:01,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:01,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197219082] [2022-11-20 11:40:01,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197219082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:01,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:01,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:40:01,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616595090] [2022-11-20 11:40:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:01,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:40:01,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:01,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:40:01,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:01,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 163 [2022-11-20 11:40:01,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 176 transitions, 717 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:01,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:01,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 163 [2022-11-20 11:40:01,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:04,246 INFO L130 PetriNetUnfolder]: 6581/13195 cut-off events. [2022-11-20 11:40:04,246 INFO L131 PetriNetUnfolder]: For 19155/19418 co-relation queries the response was YES. [2022-11-20 11:40:04,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37247 conditions, 13195 events. 6581/13195 cut-off events. For 19155/19418 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 116072 event pairs, 3419 based on Foata normal form. 668/13787 useless extension candidates. Maximal degree in co-relation 35154. Up to 9940 conditions per place. [2022-11-20 11:40:04,414 INFO L137 encePairwiseOnDemand]: 155/163 looper letters, 108 selfloop transitions, 8 changer transitions 0/207 dead transitions. [2022-11-20 11:40:04,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 207 transitions, 1136 flow [2022-11-20 11:40:04,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:40:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 11:40:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 731 transitions. [2022-11-20 11:40:04,418 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7474437627811861 [2022-11-20 11:40:04,639 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 731 transitions. [2022-11-20 11:40:04,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 731 transitions. [2022-11-20 11:40:04,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:04,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 731 transitions. [2022-11-20 11:40:04,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 121.83333333333333) internal successors, (731), 6 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:04,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:04,645 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:04,645 INFO L175 Difference]: Start difference. First operand has 167 places, 176 transitions, 717 flow. Second operand 6 states and 731 transitions. [2022-11-20 11:40:04,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 207 transitions, 1136 flow [2022-11-20 11:40:04,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 207 transitions, 1110 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:40:04,711 INFO L231 Difference]: Finished difference. Result has 169 places, 177 transitions, 721 flow [2022-11-20 11:40:04,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=721, PETRI_PLACES=169, PETRI_TRANSITIONS=177} [2022-11-20 11:40:04,715 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 21 predicate places. [2022-11-20 11:40:04,715 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 177 transitions, 721 flow [2022-11-20 11:40:04,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:04,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:04,716 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] [2022-11-20 11:40:04,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:40:04,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:04,717 INFO L85 PathProgramCache]: Analyzing trace with hash -8926498, now seen corresponding path program 1 times [2022-11-20 11:40:04,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:04,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401905144] [2022-11-20 11:40:04,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:04,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:05,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401905144] [2022-11-20 11:40:05,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401905144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:05,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:05,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:40:05,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982166473] [2022-11-20 11:40:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:05,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:40:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:40:05,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:40:05,604 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:40:05,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 177 transitions, 721 flow. Second operand has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:05,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:05,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:40:05,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:09,257 INFO L130 PetriNetUnfolder]: 10947/21160 cut-off events. [2022-11-20 11:40:09,257 INFO L131 PetriNetUnfolder]: For 29951/30277 co-relation queries the response was YES. [2022-11-20 11:40:09,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60635 conditions, 21160 events. 10947/21160 cut-off events. For 29951/30277 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 194058 event pairs, 1791 based on Foata normal form. 495/21583 useless extension candidates. Maximal degree in co-relation 51895. Up to 7894 conditions per place. [2022-11-20 11:40:09,456 INFO L137 encePairwiseOnDemand]: 145/163 looper letters, 164 selfloop transitions, 45 changer transitions 0/296 dead transitions. [2022-11-20 11:40:09,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 296 transitions, 1769 flow [2022-11-20 11:40:09,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:09,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:40:09,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 948 transitions. [2022-11-20 11:40:09,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7269938650306749 [2022-11-20 11:40:09,460 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 948 transitions. [2022-11-20 11:40:09,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 948 transitions. [2022-11-20 11:40:09,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:09,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 948 transitions. [2022-11-20 11:40:09,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 118.5) internal successors, (948), 8 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:09,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:09,469 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:09,469 INFO L175 Difference]: Start difference. First operand has 169 places, 177 transitions, 721 flow. Second operand 8 states and 948 transitions. [2022-11-20 11:40:09,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 296 transitions, 1769 flow [2022-11-20 11:40:09,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 296 transitions, 1754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:40:09,561 INFO L231 Difference]: Finished difference. Result has 176 places, 205 transitions, 1120 flow [2022-11-20 11:40:09,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1120, PETRI_PLACES=176, PETRI_TRANSITIONS=205} [2022-11-20 11:40:09,562 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 28 predicate places. [2022-11-20 11:40:09,562 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 205 transitions, 1120 flow [2022-11-20 11:40:09,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.25) internal successors, (834), 8 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:09,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:09,563 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:09,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:40:09,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:09,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash -826705219, now seen corresponding path program 1 times [2022-11-20 11:40:09,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:09,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004731364] [2022-11-20 11:40:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:09,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004731364] [2022-11-20 11:40:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004731364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:09,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:40:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361910018] [2022-11-20 11:40:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:09,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:40:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:40:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:40:09,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 163 [2022-11-20 11:40:09,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 205 transitions, 1120 flow. Second operand has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:09,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:09,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 163 [2022-11-20 11:40:09,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:13,418 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][186], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-20 11:40:13,419 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,419 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,419 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,420 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,420 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][187], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1), 272#true]) [2022-11-20 11:40:13,420 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,421 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,421 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,421 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,423 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-20 11:40:13,423 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,423 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,424 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,424 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,424 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [120#L192-2true, Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-20 11:40:13,425 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,427 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][217], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-20 11:40:13,428 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,428 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,428 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,428 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,429 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][218], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 205#(<= ~i1~0 0), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), 264#(<= ~n1~0 1)]) [2022-11-20 11:40:13,429 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,429 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,430 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,430 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:13,554 INFO L130 PetriNetUnfolder]: 10052/21651 cut-off events. [2022-11-20 11:40:13,555 INFO L131 PetriNetUnfolder]: For 59933/64679 co-relation queries the response was YES. [2022-11-20 11:40:13,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63447 conditions, 21651 events. 10052/21651 cut-off events. For 59933/64679 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 218377 event pairs, 3814 based on Foata normal form. 993/22042 useless extension candidates. Maximal degree in co-relation 61005. Up to 6392 conditions per place. [2022-11-20 11:40:13,785 INFO L137 encePairwiseOnDemand]: 150/163 looper letters, 157 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2022-11-20 11:40:13,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 2101 flow [2022-11-20 11:40:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:40:13,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 11:40:13,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-11-20 11:40:13,789 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651183172655566 [2022-11-20 11:40:13,789 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-11-20 11:40:13,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-11-20 11:40:13,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:13,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-11-20 11:40:13,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:13,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:13,797 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 163.0) internal successors, (1304), 8 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:13,797 INFO L175 Difference]: Start difference. First operand has 176 places, 205 transitions, 1120 flow. Second operand 7 states and 873 transitions. [2022-11-20 11:40:13,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 2101 flow [2022-11-20 11:40:13,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 305 transitions, 2091 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-20 11:40:13,927 INFO L231 Difference]: Finished difference. Result has 183 places, 210 transitions, 1200 flow [2022-11-20 11:40:13,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1200, PETRI_PLACES=183, PETRI_TRANSITIONS=210} [2022-11-20 11:40:13,931 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 35 predicate places. [2022-11-20 11:40:13,932 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 210 transitions, 1200 flow [2022-11-20 11:40:13,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.83333333333333) internal successors, (671), 6 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:13,933 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:13,933 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:40:13,934 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:13,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -826705218, now seen corresponding path program 1 times [2022-11-20 11:40:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:13,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381516705] [2022-11-20 11:40:13,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:13,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:14,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381516705] [2022-11-20 11:40:14,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381516705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:14,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:14,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:40:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271886043] [2022-11-20 11:40:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:40:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:40:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:40:14,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 163 [2022-11-20 11:40:14,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 210 transitions, 1200 flow. Second operand has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:14,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:14,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 163 [2022-11-20 11:40:14,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:17,423 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-20 11:40:17,424 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,424 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,424 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,424 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,424 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 180#(<= ~n1~0 0), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 277#(<= ~i2~0 0), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-20 11:40:17,424 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,425 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,426 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-20 11:40:17,426 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), 120#L192-2true, Black: 191#(<= 0 (+ ~n3~0 2147483648)), thread3Thread1of1ForFork2InUse, Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, 277#(<= ~i2~0 0), Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), 236#(<= ~n2~0 1), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0)), Black: 276#(<= ~i~0 0), 264#(<= ~n1~0 1), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0))]) [2022-11-20 11:40:17,427 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,427 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,428 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,429 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([631] L136-->thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW: Formula: (and (not (<= |v_thread3Thread1of1ForFork2_#t~post3#1_1| 2147483646)) (= |v_thread3Thread1of1ForFork2_#t~post3#1_1| v_~n3~0_53)) InVars {~n3~0=v_~n3~0_53} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_1|, ~n3~0=v_~n3~0_53} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1][182], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 48#thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-20 11:40:17,430 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,430 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,430 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,430 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,430 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([633] L136-->L139: Formula: (and (= v_~n3~0_59 (+ v_~n3~0_60 1)) (<= v_~n3~0_59 2147483647) (<= 0 (+ v_~n3~0_59 2147483648))) InVars {~n3~0=v_~n3~0_60} OutVars{thread3Thread1of1ForFork2_#t~post3#1=|v_thread3Thread1of1ForFork2_#t~post3#1_5|, ~n3~0=v_~n3~0_59} AuxVars[] AssignedVars[thread3Thread1of1ForFork2_#t~post3#1, ~n3~0][183], [Black: 248#(<= 0 (+ ~n3~0 2147483648)), Black: 191#(<= 0 (+ ~n3~0 2147483648)), Black: 262#(and (<= ~n2~0 1) (<= (+ ~n1~0 1) ~n2~0) (= ~n1~0 ~n3~0)), Black: 257#true, Black: 263#(and (<= ~n1~0 1) (<= ~n3~0 0)), 277#(<= ~i2~0 0), Black: 205#(<= ~i1~0 0), Black: 207#(and (<= ~i~0 0) (<= ~i1~0 0)), 236#(<= ~n2~0 1), Black: 204#(<= ~i~0 0), 180#(<= ~n1~0 0), 264#(<= ~n1~0 1), Black: 276#(<= ~i~0 0), Black: 272#true, Black: 279#(and (<= ~i2~0 0) (<= ~i~0 0)), 120#L192-2true, thread3Thread1of1ForFork2InUse, Black: 235#(and (<= ~n2~0 1) (<= ~n3~0 0)), Black: 227#true, Black: 233#(and (<= ~n1~0 0) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 234#(and (<= ~n1~0 1) (<= ~n2~0 0) (<= ~n3~0 0)), Black: 179#(and (<= ~n1~0 0) (= ~n3~0 0)), 294#(and (<= 0 (+ ~i~0 2147483648)) (<= 0 (+ ~i2~0 2147483648))), 11#L139true, Black: 178#(and (<= ~n2~0 0) (= ~n3~0 0) (= ~n1~0 0))]) [2022-11-20 11:40:17,431 INFO L383 tUnfolder$Statistics]: this new event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,431 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,431 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,431 INFO L386 tUnfolder$Statistics]: existing Event has 113 ancestors and is cut-off event [2022-11-20 11:40:17,513 INFO L130 PetriNetUnfolder]: 8863/19351 cut-off events. [2022-11-20 11:40:17,513 INFO L131 PetriNetUnfolder]: For 57480/61652 co-relation queries the response was YES. [2022-11-20 11:40:17,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60452 conditions, 19351 events. 8863/19351 cut-off events. For 57480/61652 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 193477 event pairs, 4608 based on Foata normal form. 1616/20600 useless extension candidates. Maximal degree in co-relation 58132. Up to 9385 conditions per place. [2022-11-20 11:40:17,689 INFO L137 encePairwiseOnDemand]: 156/163 looper letters, 101 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-11-20 11:40:17,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 239 transitions, 1608 flow [2022-11-20 11:40:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:40:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 11:40:17,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2022-11-20 11:40:17,692 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7717791411042945 [2022-11-20 11:40:17,693 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2022-11-20 11:40:17,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2022-11-20 11:40:17,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:17,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2022-11-20 11:40:17,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:17,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:17,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:17,698 INFO L175 Difference]: Start difference. First operand has 183 places, 210 transitions, 1200 flow. Second operand 5 states and 629 transitions. [2022-11-20 11:40:17,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 239 transitions, 1608 flow [2022-11-20 11:40:17,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 239 transitions, 1585 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 11:40:17,913 INFO L231 Difference]: Finished difference. Result has 181 places, 208 transitions, 1181 flow [2022-11-20 11:40:17,913 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1181, PETRI_PLACES=181, PETRI_TRANSITIONS=208} [2022-11-20 11:40:17,914 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 33 predicate places. [2022-11-20 11:40:17,914 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 208 transitions, 1181 flow [2022-11-20 11:40:17,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:17,915 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:17,915 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] [2022-11-20 11:40:17,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:40:17,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:17,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:17,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1043349793, now seen corresponding path program 1 times [2022-11-20 11:40:17,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:17,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448057922] [2022-11-20 11:40:17,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:17,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:18,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:18,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:18,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448057922] [2022-11-20 11:40:18,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448057922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:18,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:18,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:40:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256958983] [2022-11-20 11:40:18,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:18,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:40:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:40:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:40:18,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:40:18,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 208 transitions, 1181 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:18,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:18,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:40:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:24,175 INFO L130 PetriNetUnfolder]: 15468/31555 cut-off events. [2022-11-20 11:40:24,176 INFO L131 PetriNetUnfolder]: For 85563/86109 co-relation queries the response was YES. [2022-11-20 11:40:24,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101395 conditions, 31555 events. 15468/31555 cut-off events. For 85563/86109 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 318315 event pairs, 2655 based on Foata normal form. 982/32379 useless extension candidates. Maximal degree in co-relation 97851. Up to 8889 conditions per place. [2022-11-20 11:40:24,408 INFO L137 encePairwiseOnDemand]: 147/163 looper letters, 212 selfloop transitions, 66 changer transitions 4/370 dead transitions. [2022-11-20 11:40:24,408 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 370 transitions, 2831 flow [2022-11-20 11:40:24,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:40:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 962 transitions. [2022-11-20 11:40:24,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7377300613496932 [2022-11-20 11:40:24,412 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 962 transitions. [2022-11-20 11:40:24,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 962 transitions. [2022-11-20 11:40:24,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:24,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 962 transitions. [2022-11-20 11:40:24,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.25) internal successors, (962), 8 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:24,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:24,420 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:24,420 INFO L175 Difference]: Start difference. First operand has 181 places, 208 transitions, 1181 flow. Second operand 8 states and 962 transitions. [2022-11-20 11:40:24,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 370 transitions, 2831 flow [2022-11-20 11:40:24,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 370 transitions, 2817 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:40:24,684 INFO L231 Difference]: Finished difference. Result has 188 places, 249 transitions, 1865 flow [2022-11-20 11:40:24,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1865, PETRI_PLACES=188, PETRI_TRANSITIONS=249} [2022-11-20 11:40:24,685 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 40 predicate places. [2022-11-20 11:40:24,685 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 249 transitions, 1865 flow [2022-11-20 11:40:24,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:24,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:24,686 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] [2022-11-20 11:40:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:40:24,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:24,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:24,687 INFO L85 PathProgramCache]: Analyzing trace with hash 249033695, now seen corresponding path program 1 times [2022-11-20 11:40:24,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:24,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349437546] [2022-11-20 11:40:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:25,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:25,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349437546] [2022-11-20 11:40:25,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349437546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:25,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:25,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:40:25,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773065497] [2022-11-20 11:40:25,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:25,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:40:25,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:40:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:25,224 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:40:25,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 249 transitions, 1865 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:25,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:25,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:40:25,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:31,691 INFO L130 PetriNetUnfolder]: 18023/36915 cut-off events. [2022-11-20 11:40:31,691 INFO L131 PetriNetUnfolder]: For 132144/132745 co-relation queries the response was YES. [2022-11-20 11:40:31,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127038 conditions, 36915 events. 18023/36915 cut-off events. For 132144/132745 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 383007 event pairs, 7780 based on Foata normal form. 700/37359 useless extension candidates. Maximal degree in co-relation 113287. Up to 18785 conditions per place. [2022-11-20 11:40:31,979 INFO L137 encePairwiseOnDemand]: 149/163 looper letters, 237 selfloop transitions, 43 changer transitions 0/368 dead transitions. [2022-11-20 11:40:31,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 368 transitions, 3338 flow [2022-11-20 11:40:31,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 11:40:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 941 transitions. [2022-11-20 11:40:31,982 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7216257668711656 [2022-11-20 11:40:31,982 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 941 transitions. [2022-11-20 11:40:31,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 941 transitions. [2022-11-20 11:40:31,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:31,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 941 transitions. [2022-11-20 11:40:31,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:31,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:31,987 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:31,988 INFO L175 Difference]: Start difference. First operand has 188 places, 249 transitions, 1865 flow. Second operand 8 states and 941 transitions. [2022-11-20 11:40:31,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 368 transitions, 3338 flow [2022-11-20 11:40:32,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 368 transitions, 3322 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-20 11:40:32,449 INFO L231 Difference]: Finished difference. Result has 195 places, 262 transitions, 2143 flow [2022-11-20 11:40:32,449 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2143, PETRI_PLACES=195, PETRI_TRANSITIONS=262} [2022-11-20 11:40:32,450 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 47 predicate places. [2022-11-20 11:40:32,450 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 262 transitions, 2143 flow [2022-11-20 11:40:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:32,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:32,451 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] [2022-11-20 11:40:32,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:40:32,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:32,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1372711775, now seen corresponding path program 2 times [2022-11-20 11:40:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:32,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703647901] [2022-11-20 11:40:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:32,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:32,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:32,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703647901] [2022-11-20 11:40:32,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703647901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:32,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:32,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:40:32,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965685914] [2022-11-20 11:40:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:32,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:40:32,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:32,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:40:32,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:32,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:40:32,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 262 transitions, 2143 flow. Second operand has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:32,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:32,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:40:32,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:40:40,285 INFO L130 PetriNetUnfolder]: 19934/40629 cut-off events. [2022-11-20 11:40:40,285 INFO L131 PetriNetUnfolder]: For 165982/166568 co-relation queries the response was YES. [2022-11-20 11:40:40,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145274 conditions, 40629 events. 19934/40629 cut-off events. For 165982/166568 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 428461 event pairs, 7903 based on Foata normal form. 638/40997 useless extension candidates. Maximal degree in co-relation 141317. Up to 17954 conditions per place. [2022-11-20 11:40:40,615 INFO L137 encePairwiseOnDemand]: 148/163 looper letters, 256 selfloop transitions, 69 changer transitions 0/413 dead transitions. [2022-11-20 11:40:40,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 413 transitions, 4189 flow [2022-11-20 11:40:40,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:40:40,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 11:40:40,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1045 transitions. [2022-11-20 11:40:40,619 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7123381049761418 [2022-11-20 11:40:40,619 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1045 transitions. [2022-11-20 11:40:40,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1045 transitions. [2022-11-20 11:40:40,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:40:40,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1045 transitions. [2022-11-20 11:40:40,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.11111111111111) internal successors, (1045), 9 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:40,628 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:40,628 INFO L175 Difference]: Start difference. First operand has 195 places, 262 transitions, 2143 flow. Second operand 9 states and 1045 transitions. [2022-11-20 11:40:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 413 transitions, 4189 flow [2022-11-20 11:40:41,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 413 transitions, 4167 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-20 11:40:41,371 INFO L231 Difference]: Finished difference. Result has 206 places, 312 transitions, 3054 flow [2022-11-20 11:40:41,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3054, PETRI_PLACES=206, PETRI_TRANSITIONS=312} [2022-11-20 11:40:41,372 INFO L288 CegarLoopForPetriNet]: 148 programPoint places, 58 predicate places. [2022-11-20 11:40:41,372 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 312 transitions, 3054 flow [2022-11-20 11:40:41,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.11111111111111) internal successors, (937), 9 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:41,373 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:40:41,373 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] [2022-11-20 11:40:41,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:40:41,373 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 24 more)] === [2022-11-20 11:40:41,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:41,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1373265887, now seen corresponding path program 1 times [2022-11-20 11:40:41,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:41,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532964346] [2022-11-20 11:40:41,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:41,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:42,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532964346] [2022-11-20 11:40:42,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532964346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:42,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:42,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:40:42,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415704411] [2022-11-20 11:40:42,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:42,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:40:42,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:40:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:40:42,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 163 [2022-11-20 11:40:42,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 312 transitions, 3054 flow. Second operand has 8 states, 8 states have (on average 104.375) internal successors, (835), 8 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:40:42,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:40:42,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 163 [2022-11-20 11:40:42,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand