./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/twostage_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8 --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 c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e --- 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-2329fc7 [2022-12-13 20:49:25,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:49:25,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:49:25,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:49:25,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:49:25,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:49:25,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:49:25,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:49:25,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:49:25,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:49:25,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:49:25,438 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:49:25,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:49:25,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:49:25,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:49:25,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:49:25,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:49:25,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:49:25,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:49:25,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:49:25,444 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:49:25,445 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:49:25,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:49:25,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:49:25,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:49:25,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:49:25,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:49:25,449 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:49:25,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:49:25,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:49:25,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:49:25,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:49:25,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:49:25,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:49:25,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:49:25,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:49:25,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:49:25,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:49:25,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:49:25,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:49:25,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:49:25,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 20:49:25,469 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:49:25,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:49:25,469 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:49:25,469 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:49:25,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:49:25,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:49:25,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:49:25,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:49:25,470 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:49:25,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:49:25,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:49:25,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:49:25,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:49:25,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:49:25,473 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e [2022-12-13 20:49:25,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:49:25,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:49:25,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:49:25,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:49:25,658 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:49:25,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/pthread/twostage_3.i [2022-12-13 20:49:28,215 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:49:28,456 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:49:28,457 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/sv-benchmarks/c/pthread/twostage_3.i [2022-12-13 20:49:28,467 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/data/f694d23e8/e7fd84df8bc04391809622629366d503/FLAGf03fe6759 [2022-12-13 20:49:28,478 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/data/f694d23e8/e7fd84df8bc04391809622629366d503 [2022-12-13 20:49:28,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:49:28,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:49:28,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:49:28,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:49:28,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:49:28,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:49:28" (1/1) ... [2022-12-13 20:49:28,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28112c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:28, skipping insertion in model container [2022-12-13 20:49:28,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:49:28" (1/1) ... [2022-12-13 20:49:28,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:49:28,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:49:28,941 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,942 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_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/sv-benchmarks/c/pthread/twostage_3.i[58991,59004] [2022-12-13 20:49:28,945 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,948 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,949 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,953 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,956 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,958 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,959 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,962 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-13 20:49:28,962 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,963 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-13 20:49:28,964 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:28,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:49:28,973 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:49:29,018 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,019 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_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/sv-benchmarks/c/pthread/twostage_3.i[58991,59004] [2022-12-13 20:49:29,021 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,023 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,024 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,027 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,028 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,029 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,031 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,032 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-13 20:49:29,032 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,033 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-13 20:49:29,033 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-13 20:49:29,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:49:29,121 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:49:29,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29 WrapperNode [2022-12-13 20:49:29,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:49:29,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:49:29,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:49:29,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:49:29,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,181 INFO L138 Inliner]: procedures = 372, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 178 [2022-12-13 20:49:29,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:49:29,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:49:29,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:49:29,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:49:29,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,196 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,213 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:49:29,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:49:29,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:49:29,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:49:29,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (1/1) ... [2022-12-13 20:49:29,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:49:29,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:49:29,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:49:29,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:49:29,280 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2022-12-13 20:49:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2022-12-13 20:49:29,281 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 20:49:29,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:49:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:49:29,282 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:49:29,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:49:29,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 20:49:29,400 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:49:29,402 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:49:29,681 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:49:29,690 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:49:29,691 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 20:49:29,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:49:29 BoogieIcfgContainer [2022-12-13 20:49:29,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:49:29,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:49:29,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:49:29,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:49:29,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:49:28" (1/3) ... [2022-12-13 20:49:29,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:49:29, skipping insertion in model container [2022-12-13 20:49:29,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:49:29" (2/3) ... [2022-12-13 20:49:29,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f2d614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:49:29, skipping insertion in model container [2022-12-13 20:49:29,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:49:29" (3/3) ... [2022-12-13 20:49:29,701 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2022-12-13 20:49:29,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 20:49:29,717 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:49:29,717 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 20:49:29,717 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 20:49:29,783 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 20:49:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:29,929 INFO L130 PetriNetUnfolder]: 41/452 cut-off events. [2022-12-13 20:49:29,929 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 20:49:29,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 452 events. 41/452 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1621 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2022-12-13 20:49:29,937 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:29,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:29,947 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:49:29,957 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:29,960 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:29,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 500 flow [2022-12-13 20:49:30,024 INFO L130 PetriNetUnfolder]: 41/452 cut-off events. [2022-12-13 20:49:30,024 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-13 20:49:30,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 452 events. 41/452 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1621 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 242. Up to 8 conditions per place. [2022-12-13 20:49:30,030 INFO L119 LiptonReduction]: Number of co-enabled transitions 8180 [2022-12-13 20:49:45,730 INFO L134 LiptonReduction]: Checked pairs total: 20237 [2022-12-13 20:49:45,730 INFO L136 LiptonReduction]: Total number of compositions: 252 [2022-12-13 20:49:45,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:49:45,745 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;@6a7930f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:49:45,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-13 20:49:45,748 INFO L130 PetriNetUnfolder]: 0/8 cut-off events. [2022-12-13 20:49:45,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:49:45,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:49:45,748 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 20:49:45,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 20:49:45,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:49:45,752 INFO L85 PathProgramCache]: Analyzing trace with hash 27043550, now seen corresponding path program 1 times [2022-12-13 20:49:45,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:49:45,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387709138] [2022-12-13 20:49:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:49:45,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:49:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:49:45,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:49:45,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:49:45,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387709138] [2022-12-13 20:49:45,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387709138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:49:45,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:49:46,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:49:46,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868412558] [2022-12-13 20:49:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:49:46,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:49:46,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:49:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:49:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:49:46,064 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 491 [2022-12-13 20:49:46,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:49:46,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:49:46,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 491 [2022-12-13 20:49:46,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:49:46,288 INFO L130 PetriNetUnfolder]: 1014/1916 cut-off events. [2022-12-13 20:49:46,288 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-12-13 20:49:46,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1916 events. 1014/1916 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12047 event pairs, 502 based on Foata normal form. 0/1255 useless extension candidates. Maximal degree in co-relation 3102. Up to 1185 conditions per place. [2022-12-13 20:49:46,300 INFO L137 encePairwiseOnDemand]: 475/491 looper letters, 55 selfloop transitions, 8 changer transitions 2/74 dead transitions. [2022-12-13 20:49:46,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 312 flow [2022-12-13 20:49:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:49:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:49:46,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2022-12-13 20:49:46,317 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47522063815342835 [2022-12-13 20:49:46,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2022-12-13 20:49:46,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2022-12-13 20:49:46,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:49:46,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2022-12-13 20:49:46,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:49:46,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:49:46,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 491.0) internal successors, (1964), 4 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:49:46,338 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 122 flow. Second operand 3 states and 700 transitions. [2022-12-13 20:49:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 312 flow [2022-12-13 20:49:46,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:49:46,346 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 166 flow [2022-12-13 20:49:46,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=491, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2022-12-13 20:49:46,352 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2022-12-13 20:49:46,352 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 166 flow [2022-12-13 20:49:46,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:49:46,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:49:46,353 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 20:49:46,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:49:46,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-13 20:49:46,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:49:46,354 INFO L85 PathProgramCache]: Analyzing trace with hash 219071556, now seen corresponding path program 1 times [2022-12-13 20:49:46,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:49:46,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493528950] [2022-12-13 20:49:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:49:46,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:49:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:49:46,426 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:49:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:49:46,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:49:46,465 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:49:46,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-13 20:49:46,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-13 20:49:46,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-13 20:49:46,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-13 20:49:46,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-13 20:49:46,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-13 20:49:46,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-13 20:49:46,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-13 20:49:46,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-13 20:49:46,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-13 20:49:46,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-13 20:49:46,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 20:49:46,470 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-13 20:49:46,472 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:49:46,472 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 20:49:46,509 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-13 20:49:46,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,667 INFO L130 PetriNetUnfolder]: 157/1385 cut-off events. [2022-12-13 20:49:46,667 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 20:49:46,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 1385 events. 157/1385 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7911 event pairs, 1 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 817. Up to 32 conditions per place. [2022-12-13 20:49:46,673 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,679 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,679 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:49:46,679 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,680 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 286 transitions, 620 flow [2022-12-13 20:49:46,813 INFO L130 PetriNetUnfolder]: 157/1385 cut-off events. [2022-12-13 20:49:46,813 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-13 20:49:46,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482 conditions, 1385 events. 157/1385 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7911 event pairs, 1 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 817. Up to 32 conditions per place. [2022-12-13 20:49:46,842 INFO L119 LiptonReduction]: Number of co-enabled transitions 20520 [2022-12-13 20:50:00,127 INFO L134 LiptonReduction]: Checked pairs total: 80765 [2022-12-13 20:50:00,127 INFO L136 LiptonReduction]: Total number of compositions: 276 [2022-12-13 20:50:00,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:50:00,129 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;@6a7930f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:50:00,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 20:50:00,132 INFO L130 PetriNetUnfolder]: 0/12 cut-off events. [2022-12-13 20:50:00,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:50:00,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:00,132 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:50:00,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:00,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:00,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1417722631, now seen corresponding path program 1 times [2022-12-13 20:50:00,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:00,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278038256] [2022-12-13 20:50:00,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:00,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:50:00,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278038256] [2022-12-13 20:50:00,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278038256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:50:00,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:50:00,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:50:00,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400177669] [2022-12-13 20:50:00,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:50:00,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 20:50:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:50:00,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 20:50:00,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 20:50:00,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 562 [2022-12-13 20:50:00,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 81 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:00,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:50:00,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 562 [2022-12-13 20:50:00,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:50:09,346 INFO L130 PetriNetUnfolder]: 92945/138273 cut-off events. [2022-12-13 20:50:09,346 INFO L131 PetriNetUnfolder]: For 6471/6471 co-relation queries the response was YES. [2022-12-13 20:50:09,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268158 conditions, 138273 events. 92945/138273 cut-off events. For 6471/6471 co-relation queries the response was YES. Maximal size of possible extension queue 5405. Compared 1205255 event pairs, 26664 based on Foata normal form. 0/93115 useless extension candidates. Maximal degree in co-relation 132755. Up to 62317 conditions per place. [2022-12-13 20:50:10,061 INFO L137 encePairwiseOnDemand]: 544/562 looper letters, 112 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2022-12-13 20:50:10,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 151 transitions, 626 flow [2022-12-13 20:50:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 20:50:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 20:50:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1098 transitions. [2022-12-13 20:50:10,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4884341637010676 [2022-12-13 20:50:10,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1098 transitions. [2022-12-13 20:50:10,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1098 transitions. [2022-12-13 20:50:10,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:50:10,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1098 transitions. [2022-12-13 20:50:10,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 274.5) internal successors, (1098), 4 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:10,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 562.0) internal successors, (2810), 5 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:10,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 562.0) internal successors, (2810), 5 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:10,070 INFO L175 Difference]: Start difference. First operand has 80 places, 81 transitions, 210 flow. Second operand 4 states and 1098 transitions. [2022-12-13 20:50:10,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 151 transitions, 626 flow [2022-12-13 20:50:10,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 626 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:50:10,077 INFO L231 Difference]: Finished difference. Result has 86 places, 94 transitions, 326 flow [2022-12-13 20:50:10,077 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=562, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=326, PETRI_PLACES=86, PETRI_TRANSITIONS=94} [2022-12-13 20:50:10,077 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 6 predicate places. [2022-12-13 20:50:10,078 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 94 transitions, 326 flow [2022-12-13 20:50:10,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:10,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:10,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:50:10,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 20:50:10,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:10,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1417722632, now seen corresponding path program 1 times [2022-12-13 20:50:10,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:10,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012162655] [2022-12-13 20:50:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:10,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:10,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:50:10,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012162655] [2022-12-13 20:50:10,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012162655] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:50:10,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:50:10,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:50:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882770104] [2022-12-13 20:50:10,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:50:10,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:50:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:50:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:50:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:50:10,171 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 562 [2022-12-13 20:50:10,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 94 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:10,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:50:10,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 562 [2022-12-13 20:50:10,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:50:19,286 INFO L130 PetriNetUnfolder]: 86801/126485 cut-off events. [2022-12-13 20:50:19,286 INFO L131 PetriNetUnfolder]: For 36374/36374 co-relation queries the response was YES. [2022-12-13 20:50:19,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271426 conditions, 126485 events. 86801/126485 cut-off events. For 36374/36374 co-relation queries the response was YES. Maximal size of possible extension queue 5000. Compared 1074509 event pairs, 40538 based on Foata normal form. 2458/96875 useless extension candidates. Maximal degree in co-relation 181797. Up to 61565 conditions per place. [2022-12-13 20:50:19,911 INFO L137 encePairwiseOnDemand]: 550/562 looper letters, 91 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2022-12-13 20:50:19,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 600 flow [2022-12-13 20:50:19,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:50:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:50:19,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 847 transitions. [2022-12-13 20:50:19,913 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5023724792408066 [2022-12-13 20:50:19,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 847 transitions. [2022-12-13 20:50:19,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 847 transitions. [2022-12-13 20:50:19,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:50:19,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 847 transitions. [2022-12-13 20:50:19,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:19,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:19,918 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:19,918 INFO L175 Difference]: Start difference. First operand has 86 places, 94 transitions, 326 flow. Second operand 3 states and 847 transitions. [2022-12-13 20:50:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 600 flow [2022-12-13 20:50:20,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 600 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 20:50:20,023 INFO L231 Difference]: Finished difference. Result has 88 places, 90 transitions, 326 flow [2022-12-13 20:50:20,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=562, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=326, PETRI_PLACES=88, PETRI_TRANSITIONS=90} [2022-12-13 20:50:20,024 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-12-13 20:50:20,024 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 90 transitions, 326 flow [2022-12-13 20:50:20,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 249.33333333333334) internal successors, (748), 3 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:20,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:20,025 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:50:20,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 20:50:20,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:20,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1096386037, now seen corresponding path program 1 times [2022-12-13 20:50:20,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:20,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120938073] [2022-12-13 20:50:20,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:20,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:50:20,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120938073] [2022-12-13 20:50:20,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120938073] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:50:20,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:50:20,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:50:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921551123] [2022-12-13 20:50:20,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:50:20,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:50:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:50:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:50:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:50:20,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 562 [2022-12-13 20:50:20,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 90 transitions, 326 flow. Second operand has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:20,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:50:20,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 562 [2022-12-13 20:50:20,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:50:30,538 INFO L130 PetriNetUnfolder]: 99912/167382 cut-off events. [2022-12-13 20:50:30,538 INFO L131 PetriNetUnfolder]: For 56370/56370 co-relation queries the response was YES. [2022-12-13 20:50:30,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342989 conditions, 167382 events. 99912/167382 cut-off events. For 56370/56370 co-relation queries the response was YES. Maximal size of possible extension queue 5560. Compared 1701987 event pairs, 22076 based on Foata normal form. 16190/157097 useless extension candidates. Maximal degree in co-relation 214375. Up to 115577 conditions per place. [2022-12-13 20:50:31,303 INFO L137 encePairwiseOnDemand]: 554/562 looper letters, 116 selfloop transitions, 2 changer transitions 0/138 dead transitions. [2022-12-13 20:50:31,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 138 transitions, 769 flow [2022-12-13 20:50:31,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:50:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:50:31,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 855 transitions. [2022-12-13 20:50:31,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5071174377224199 [2022-12-13 20:50:31,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 855 transitions. [2022-12-13 20:50:31,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 855 transitions. [2022-12-13 20:50:31,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:50:31,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 855 transitions. [2022-12-13 20:50:31,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.0) internal successors, (855), 3 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:31,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:31,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:31,311 INFO L175 Difference]: Start difference. First operand has 88 places, 90 transitions, 326 flow. Second operand 3 states and 855 transitions. [2022-12-13 20:50:31,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 138 transitions, 769 flow [2022-12-13 20:50:31,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 138 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:50:31,526 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 330 flow [2022-12-13 20:50:31,526 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=562, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2022-12-13 20:50:31,526 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 7 predicate places. [2022-12-13 20:50:31,526 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 330 flow [2022-12-13 20:50:31,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:31,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:31,527 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:50:31,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 20:50:31,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:31,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:31,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1653199229, now seen corresponding path program 1 times [2022-12-13 20:50:31,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:31,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814564211] [2022-12-13 20:50:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:31,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:31,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:31,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:50:31,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814564211] [2022-12-13 20:50:31,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814564211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:50:31,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176522615] [2022-12-13 20:50:31,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:31,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:50:31,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:50:31,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:50:31,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:50:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:31,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 20:50:31,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:50:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:32,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:50:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:32,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176522615] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:50:32,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:50:32,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 7 [2022-12-13 20:50:32,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006766482] [2022-12-13 20:50:32,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:50:32,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 20:50:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:50:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 20:50:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-12-13 20:50:32,152 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 562 [2022-12-13 20:50:32,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 330 flow. Second operand has 9 states, 9 states have (on average 244.33333333333334) internal successors, (2199), 9 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:32,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:50:32,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 562 [2022-12-13 20:50:32,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:50:40,149 INFO L130 PetriNetUnfolder]: 70973/110417 cut-off events. [2022-12-13 20:50:40,149 INFO L131 PetriNetUnfolder]: For 37253/37253 co-relation queries the response was YES. [2022-12-13 20:50:40,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242447 conditions, 110417 events. 70973/110417 cut-off events. For 37253/37253 co-relation queries the response was YES. Maximal size of possible extension queue 4060. Compared 995371 event pairs, 26916 based on Foata normal form. 0/91587 useless extension candidates. Maximal degree in co-relation 163112. Up to 49721 conditions per place. [2022-12-13 20:50:40,686 INFO L137 encePairwiseOnDemand]: 548/562 looper letters, 147 selfloop transitions, 22 changer transitions 6/199 dead transitions. [2022-12-13 20:50:40,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 199 transitions, 1027 flow [2022-12-13 20:50:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 20:50:40,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 20:50:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1877 transitions. [2022-12-13 20:50:40,690 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47712252160650737 [2022-12-13 20:50:40,690 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1877 transitions. [2022-12-13 20:50:40,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1877 transitions. [2022-12-13 20:50:40,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:50:40,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1877 transitions. [2022-12-13 20:50:40,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 268.14285714285717) internal successors, (1877), 7 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:40,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 562.0) internal successors, (4496), 8 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:40,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 562.0) internal successors, (4496), 8 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:40,699 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 330 flow. Second operand 7 states and 1877 transitions. [2022-12-13 20:50:40,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 199 transitions, 1027 flow [2022-12-13 20:50:40,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 199 transitions, 1025 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 20:50:40,857 INFO L231 Difference]: Finished difference. Result has 88 places, 94 transitions, 420 flow [2022-12-13 20:50:40,857 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=562, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=420, PETRI_PLACES=88, PETRI_TRANSITIONS=94} [2022-12-13 20:50:40,858 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 8 predicate places. [2022-12-13 20:50:40,858 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 420 flow [2022-12-13 20:50:40,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 244.33333333333334) internal successors, (2199), 9 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:40,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:40,859 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 20:50:40,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:50:41,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_391f4413-f2c9-4a00-afb9-ff9c6cf6231d/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 20:50:41,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:41,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:41,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1653199230, now seen corresponding path program 1 times [2022-12-13 20:50:41,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:41,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605939243] [2022-12-13 20:50:41,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:50:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:50:41,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:50:41,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605939243] [2022-12-13 20:50:41,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605939243] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:50:41,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:50:41,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 20:50:41,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079600710] [2022-12-13 20:50:41,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:50:41,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:50:41,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:50:41,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:50:41,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:50:41,148 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 562 [2022-12-13 20:50:41,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 420 flow. Second operand has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:41,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:50:41,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 562 [2022-12-13 20:50:41,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 20:50:48,096 INFO L130 PetriNetUnfolder]: 65586/97044 cut-off events. [2022-12-13 20:50:48,097 INFO L131 PetriNetUnfolder]: For 55261/55261 co-relation queries the response was YES. [2022-12-13 20:50:48,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221709 conditions, 97044 events. 65586/97044 cut-off events. For 55261/55261 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 828417 event pairs, 58901 based on Foata normal form. 2054/81299 useless extension candidates. Maximal degree in co-relation 85939. Up to 91482 conditions per place. [2022-12-13 20:50:48,567 INFO L137 encePairwiseOnDemand]: 557/562 looper letters, 61 selfloop transitions, 1 changer transitions 0/86 dead transitions. [2022-12-13 20:50:48,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 86 transitions, 484 flow [2022-12-13 20:50:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:50:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 20:50:48,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 795 transitions. [2022-12-13 20:50:48,570 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47153024911032027 [2022-12-13 20:50:48,571 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 795 transitions. [2022-12-13 20:50:48,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 795 transitions. [2022-12-13 20:50:48,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 20:50:48,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 795 transitions. [2022-12-13 20:50:48,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:48,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:48,577 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 562.0) internal successors, (2248), 4 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:48,577 INFO L175 Difference]: Start difference. First operand has 88 places, 94 transitions, 420 flow. Second operand 3 states and 795 transitions. [2022-12-13 20:50:48,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 86 transitions, 484 flow [2022-12-13 20:50:48,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 86 transitions, 439 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 20:50:48,639 INFO L231 Difference]: Finished difference. Result has 80 places, 86 transitions, 317 flow [2022-12-13 20:50:48,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=562, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=86} [2022-12-13 20:50:48,639 INFO L288 CegarLoopForPetriNet]: 80 programPoint places, 0 predicate places. [2022-12-13 20:50:48,639 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 86 transitions, 317 flow [2022-12-13 20:50:48,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.33333333333334) internal successors, (751), 3 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:50:48,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:50:48,640 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 20:50:48,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 20:50:48,640 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 20:50:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:50:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -413397119, now seen corresponding path program 1 times [2022-12-13 20:50:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:50:48,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051084574] [2022-12-13 20:50:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:50:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:50:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:50:48,674 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 20:50:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 20:50:48,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 20:50:48,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-12-13 20:50:48,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-12-13 20:50:48,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-12-13 20:50:48,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-12-13 20:50:48,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-12-13 20:50:48,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-12-13 20:50:48,701 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-12-13 20:50:48,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 20:50:48,701 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-13 20:50:48,701 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 20:50:48,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 20:50:48,726 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-13 20:50:48,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,336 INFO L130 PetriNetUnfolder]: 655/4524 cut-off events. [2022-12-13 20:50:49,337 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 20:50:49,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 4524 events. 655/4524 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 34956 event pairs, 32 based on Foata normal form. 0/3745 useless extension candidates. Maximal degree in co-relation 2656. Up to 192 conditions per place. [2022-12-13 20:50:49,356 INFO L82 GeneralOperation]: Start removeDead. Operand has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,372 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 20:50:49,372 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 333 transitions, 744 flow [2022-12-13 20:50:49,913 INFO L130 PetriNetUnfolder]: 655/4524 cut-off events. [2022-12-13 20:50:49,913 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-13 20:50:49,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 4524 events. 655/4524 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 34956 event pairs, 32 based on Foata normal form. 0/3745 useless extension candidates. Maximal degree in co-relation 2656. Up to 192 conditions per place. [2022-12-13 20:50:50,050 INFO L119 LiptonReduction]: Number of co-enabled transitions 37020 [2022-12-13 20:51:08,331 INFO L134 LiptonReduction]: Checked pairs total: 153512 [2022-12-13 20:51:08,331 INFO L136 LiptonReduction]: Total number of compositions: 299 [2022-12-13 20:51:08,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:51:08,332 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;@6a7930f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:51:08,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-12-13 20:51:08,334 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2022-12-13 20:51:08,334 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 20:51:08,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 20:51:08,334 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 20:51:08,334 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-12-13 20:51:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:51:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2063698463, now seen corresponding path program 1 times [2022-12-13 20:51:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:51:08,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379470031] [2022-12-13 20:51:08,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:51:08,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:51:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:51:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:51:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:51:08,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379470031] [2022-12-13 20:51:08,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379470031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:51:08,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:51:08,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 20:51:08,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966821550] [2022-12-13 20:51:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:51:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:51:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:51:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:51:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:51:08,402 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 632 [2022-12-13 20:51:08,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 108 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 288.3333333333333) internal successors, (865), 3 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:51:08,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 20:51:08,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 632 [2022-12-13 20:51:08,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand