./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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread/twostage_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh --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 Taipan --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 [2022-12-14 10:49:36,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 10:49:36,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 10:49:36,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 10:49:36,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 10:49:36,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 10:49:36,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 10:49:36,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 10:49:36,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 10:49:36,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 10:49:36,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 10:49:36,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 10:49:36,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 10:49:36,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 10:49:36,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 10:49:36,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 10:49:36,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 10:49:36,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 10:49:36,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 10:49:36,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 10:49:36,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 10:49:36,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 10:49:36,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 10:49:36,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 10:49:36,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 10:49:36,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 10:49:36,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 10:49:36,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 10:49:36,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 10:49:36,674 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 10:49:36,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 10:49:36,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 10:49:36,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 10:49:36,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 10:49:36,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 10:49:36,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 10:49:36,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 10:49:36,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 10:49:36,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 10:49:36,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 10:49:36,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 10:49:36,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-12-14 10:49:36,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 10:49:36,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 10:49:36,705 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 10:49:36,705 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 10:49:36,706 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 10:49:36,706 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 10:49:36,706 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 10:49:36,706 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 10:49:36,707 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 10:49:36,707 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 10:49:36,707 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 10:49:36,707 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 10:49:36,707 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 10:49:36,708 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 10:49:36,708 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 10:49:36,708 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 10:49:36,708 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 10:49:36,708 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 10:49:36,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 10:49:36,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 10:49:36,710 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 10:49:36,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 10:49:36,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 10:49:36,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 10:49:36,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 10:49:36,711 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 10:49:36,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 10:49:36,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 10:49:36,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 10:49:36,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:49:36,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 10:49:36,713 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 10:49:36,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 10:49:36,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 10:49:36,713 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 10:49:36,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 10:49:36,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 10:49:36,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 10:49:36,714 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1c75e051173a22f60f33f26eab32e0b3a7dcaf46f2d4cc494d0c9d8775c984e [2022-12-14 10:49:36,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 10:49:36,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 10:49:36,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 10:49:36,938 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 10:49:36,938 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 10:49:36,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/pthread/twostage_3.i [2022-12-14 10:49:39,663 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 10:49:39,858 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 10:49:39,858 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/sv-benchmarks/c/pthread/twostage_3.i [2022-12-14 10:49:39,869 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/data/d8a3f6438/87444538d905492e9949ba85cb715f1b/FLAG61d80fd39 [2022-12-14 10:49:39,879 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/data/d8a3f6438/87444538d905492e9949ba85cb715f1b [2022-12-14 10:49:39,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 10:49:39,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 10:49:39,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 10:49:39,883 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 10:49:39,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 10:49:39,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:49:39" (1/1) ... [2022-12-14 10:49:39,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4183dbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:39, skipping insertion in model container [2022-12-14 10:49:39,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:49:39" (1/1) ... [2022-12-14 10:49:39,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 10:49:39,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 10:49:40,379 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,380 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_1c05c40d-3aa1-4af6-a857-174f740fe8b0/sv-benchmarks/c/pthread/twostage_3.i[58991,59004] [2022-12-14 10:49:40,382 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,385 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,385 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,388 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,390 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,392 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,393 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,395 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-14 10:49:40,395 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,395 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-14 10:49:40,396 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:49:40,403 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 10:49:40,433 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,433 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_1c05c40d-3aa1-4af6-a857-174f740fe8b0/sv-benchmarks/c/pthread/twostage_3.i[58991,59004] [2022-12-14 10:49:40,434 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,435 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,436 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,438 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,439 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,440 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,441 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,442 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-14 10:49:40,442 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,443 WARN L1576 CHandler]: Possible shadowing of function lock [2022-12-14 10:49:40,443 WARN L623 FunctionHandler]: Unknown extern function fprintf [2022-12-14 10:49:40,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 10:49:40,488 INFO L208 MainTranslator]: Completed translation [2022-12-14 10:49:40,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40 WrapperNode [2022-12-14 10:49:40,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 10:49:40,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 10:49:40,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 10:49:40,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 10:49:40,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,540 INFO L138 Inliner]: procedures = 372, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 178 [2022-12-14 10:49:40,540 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 10:49:40,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 10:49:40,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 10:49:40,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 10:49:40,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 10:49:40,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 10:49:40,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 10:49:40,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 10:49:40,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (1/1) ... [2022-12-14 10:49:40,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 10:49:40,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:49:40,611 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 10:49:40,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 10:49:40,651 INFO L130 BoogieDeclarations]: Found specification of procedure funcA [2022-12-14 10:49:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure funcA [2022-12-14 10:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure funcB [2022-12-14 10:49:40,652 INFO L138 BoogieDeclarations]: Found implementation of procedure funcB [2022-12-14 10:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 10:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 10:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 10:49:40,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 10:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-14 10:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 10:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 10:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 10:49:40,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 10:49:40,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 10:49:40,655 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 10:49:40,793 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 10:49:40,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 10:49:41,072 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 10:49:41,083 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 10:49:41,083 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-14 10:49:41,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:49:41 BoogieIcfgContainer [2022-12-14 10:49:41,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 10:49:41,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 10:49:41,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 10:49:41,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 10:49:41,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 10:49:39" (1/3) ... [2022-12-14 10:49:41,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639ea73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:49:41, skipping insertion in model container [2022-12-14 10:49:41,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:49:40" (2/3) ... [2022-12-14 10:49:41,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@639ea73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 10:49:41, skipping insertion in model container [2022-12-14 10:49:41,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:49:41" (3/3) ... [2022-12-14 10:49:41,092 INFO L112 eAbstractionObserver]: Analyzing ICFG twostage_3.i [2022-12-14 10:49:41,099 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-14 10:49:41,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 10:49:41,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-14 10:49:41,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 10:49:41,163 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-14 10:49:41,190 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:49:41,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 239 transitions, 500 flow [2022-12-14 10:49:41,204 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 239 transitions, 500 flow [2022-12-14 10:49:41,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 500 flow [2022-12-14 10:49:41,294 INFO L130 PetriNetUnfolder]: 41/452 cut-off events. [2022-12-14 10:49:41,294 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-14 10:49:41,302 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. [2022-12-14 10:49:41,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 8180 [2022-12-14 10:49:52,979 INFO L134 LiptonReduction]: Checked pairs total: 19170 [2022-12-14 10:49:52,979 INFO L136 LiptonReduction]: Total number of compositions: 253 [2022-12-14 10:49:52,987 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 49 places, 49 transitions, 120 flow [2022-12-14 10:49:53,052 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1386 states, 1280 states have (on average 2.77890625) internal successors, (3557), 1385 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:49:53,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:49:53,072 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=FINITE_AUTOMATA, 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;@71fcb230, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:49:53,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-12-14 10:49:53,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 1386 states, 1280 states have (on average 2.77890625) internal successors, (3557), 1385 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:49:53,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 10:49:53,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:53,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 10:49:53,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-14 10:49:53,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:53,088 INFO L85 PathProgramCache]: Analyzing trace with hash 27073345, now seen corresponding path program 1 times [2022-12-14 10:49:53,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:53,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175399550] [2022-12-14 10:49:53,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:53,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:53,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:49:53,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:49:53,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:49:53,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175399550] [2022-12-14 10:49:53,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175399550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:49:53,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:49:53,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:49:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724282548] [2022-12-14 10:49:53,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:49:53,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:49:53,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:49:53,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:49:53,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:53,391 INFO L87 Difference]: Start difference. First operand has 1386 states, 1280 states have (on average 2.77890625) internal successors, (3557), 1385 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:49:53,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:49:53,509 INFO L93 Difference]: Finished difference Result 1195 states and 2992 transitions. [2022-12-14 10:49:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:49:53,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-12-14 10:49:53,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:49:53,525 INFO L225 Difference]: With dead ends: 1195 [2022-12-14 10:49:53,526 INFO L226 Difference]: Without dead ends: 1147 [2022-12-14 10:49:53,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:49:53,528 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:49:53,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 16 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:49:53,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2022-12-14 10:49:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1117. [2022-12-14 10:49:53,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 1070 states have (on average 2.6682242990654204) internal successors, (2855), 1116 states have internal predecessors, (2855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:49:53,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 2855 transitions. [2022-12-14 10:49:53,592 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 2855 transitions. Word has length 4 [2022-12-14 10:49:53,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:49:53,593 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 2855 transitions. [2022-12-14 10:49:53,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:49:53,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 2855 transitions. [2022-12-14 10:49:53,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 10:49:53,593 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:49:53,593 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-12-14 10:49:53,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 10:49:53,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2022-12-14 10:49:53,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:49:53,594 INFO L85 PathProgramCache]: Analyzing trace with hash 247704551, now seen corresponding path program 1 times [2022-12-14 10:49:53,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:49:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969120051] [2022-12-14 10:49:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:49:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:49:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:49:53,652 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:49:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:49:53,695 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:49:53,696 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:49:53,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-12-14 10:49:53,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-12-14 10:49:53,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-12-14 10:49:53,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-12-14 10:49:53,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 10:49:53,702 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-12-14 10:49:53,704 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 10:49:53,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-14 10:49:53,732 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-12-14 10:49:53,735 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:49:53,735 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 286 transitions, 620 flow [2022-12-14 10:49:53,736 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 286 transitions, 620 flow [2022-12-14 10:49:53,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 286 transitions, 620 flow [2022-12-14 10:49:53,894 INFO L130 PetriNetUnfolder]: 157/1385 cut-off events. [2022-12-14 10:49:53,894 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-12-14 10:49:53,900 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. [2022-12-14 10:49:53,924 INFO L119 LiptonReduction]: Number of co-enabled transitions 20520 [2022-12-14 10:50:11,037 INFO L134 LiptonReduction]: Checked pairs total: 59724 [2022-12-14 10:50:11,037 INFO L136 LiptonReduction]: Total number of compositions: 282 [2022-12-14 10:50:11,038 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 74 places, 75 transitions, 198 flow [2022-12-14 10:50:14,639 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 162465 states, 160886 states have (on average 4.371020474124536) internal successors, (703236), 162464 states have internal predecessors, (703236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:14,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 10:50:14,642 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=FINITE_AUTOMATA, 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;@71fcb230, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 10:50:14,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-14 10:50:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand has 162465 states, 160886 states have (on average 4.371020474124536) internal successors, (703236), 162464 states have internal predecessors, (703236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:14,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 10:50:14,888 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:14,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-12-14 10:50:14,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:14,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:14,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1424486187, now seen corresponding path program 1 times [2022-12-14 10:50:14,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:14,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967678428] [2022-12-14 10:50:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:14,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:15,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:15,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:50:15,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967678428] [2022-12-14 10:50:15,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967678428] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:15,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:15,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 10:50:15,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355929236] [2022-12-14 10:50:15,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:15,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:15,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:50:15,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:15,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:15,297 INFO L87 Difference]: Start difference. First operand has 162465 states, 160886 states have (on average 4.371020474124536) internal successors, (703236), 162464 states have internal predecessors, (703236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:17,324 INFO L93 Difference]: Finished difference Result 165088 states and 706927 transitions. [2022-12-14 10:50:17,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-12-14 10:50:17,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:18,636 INFO L225 Difference]: With dead ends: 165088 [2022-12-14 10:50:18,636 INFO L226 Difference]: Without dead ends: 164796 [2022-12-14 10:50:18,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:18,638 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:18,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 34 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:50:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164796 states. [2022-12-14 10:50:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164796 to 160712. [2022-12-14 10:50:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160712 states, 159666 states have (on average 4.353657009006301) internal successors, (695131), 160711 states have internal predecessors, (695131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160712 states to 160712 states and 695131 transitions. [2022-12-14 10:50:24,742 INFO L78 Accepts]: Start accepts. Automaton has 160712 states and 695131 transitions. Word has length 5 [2022-12-14 10:50:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:24,742 INFO L495 AbstractCegarLoop]: Abstraction has 160712 states and 695131 transitions. [2022-12-14 10:50:24,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 160712 states and 695131 transitions. [2022-12-14 10:50:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 10:50:24,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:24,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:24,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 10:50:24,743 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:24,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1155609427, now seen corresponding path program 1 times [2022-12-14 10:50:24,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:24,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188496871] [2022-12-14 10:50:24,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:24,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:24,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:24,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:50:24,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188496871] [2022-12-14 10:50:24,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188496871] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:24,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:24,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:24,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713711506] [2022-12-14 10:50:24,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:24,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:24,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:50:24,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:24,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:24,787 INFO L87 Difference]: Start difference. First operand 160712 states and 695131 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:25,752 INFO L93 Difference]: Finished difference Result 106194 states and 429651 transitions. [2022-12-14 10:50:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:25,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 10:50:25,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:26,284 INFO L225 Difference]: With dead ends: 106194 [2022-12-14 10:50:26,285 INFO L226 Difference]: Without dead ends: 105716 [2022-12-14 10:50:26,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:26,286 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 64 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:26,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 37 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:50:26,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105716 states. [2022-12-14 10:50:28,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105716 to 104417. [2022-12-14 10:50:29,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104417 states, 104145 states have (on average 4.070219405636372) internal successors, (423893), 104416 states have internal predecessors, (423893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:29,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104417 states to 104417 states and 423893 transitions. [2022-12-14 10:50:29,637 INFO L78 Accepts]: Start accepts. Automaton has 104417 states and 423893 transitions. Word has length 7 [2022-12-14 10:50:29,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:29,637 INFO L495 AbstractCegarLoop]: Abstraction has 104417 states and 423893 transitions. [2022-12-14 10:50:29,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:29,638 INFO L276 IsEmpty]: Start isEmpty. Operand 104417 states and 423893 transitions. [2022-12-14 10:50:29,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:50:29,638 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:29,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 10:50:29,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 10:50:29,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:29,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1236069824, now seen corresponding path program 1 times [2022-12-14 10:50:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193044029] [2022-12-14 10:50:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:29,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:29,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:29,686 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:50:29,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193044029] [2022-12-14 10:50:29,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193044029] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:29,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:29,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:29,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965860888] [2022-12-14 10:50:29,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:29,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:29,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:50:29,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:29,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:29,688 INFO L87 Difference]: Start difference. First operand 104417 states and 423893 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:30,552 INFO L93 Difference]: Finished difference Result 97740 states and 396160 transitions. [2022-12-14 10:50:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:30,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:50:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:31,105 INFO L225 Difference]: With dead ends: 97740 [2022-12-14 10:50:31,106 INFO L226 Difference]: Without dead ends: 97740 [2022-12-14 10:50:31,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:31,107 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:31,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 15 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:50:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97740 states. [2022-12-14 10:50:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97740 to 97740. [2022-12-14 10:50:33,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97740 states, 97558 states have (on average 4.060763853297526) internal successors, (396160), 97739 states have internal predecessors, (396160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97740 states to 97740 states and 396160 transitions. [2022-12-14 10:50:34,099 INFO L78 Accepts]: Start accepts. Automaton has 97740 states and 396160 transitions. Word has length 9 [2022-12-14 10:50:34,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:34,100 INFO L495 AbstractCegarLoop]: Abstraction has 97740 states and 396160 transitions. [2022-12-14 10:50:34,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 97740 states and 396160 transitions. [2022-12-14 10:50:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 10:50:34,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:34,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-14 10:50:34,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 10:50:34,101 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1236069822, now seen corresponding path program 1 times [2022-12-14 10:50:34,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:34,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898950275] [2022-12-14 10:50:34,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:34,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:34,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:34,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:50:34,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898950275] [2022-12-14 10:50:34,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898950275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 10:50:34,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054404618] [2022-12-14 10:50:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:34,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:50:34,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 10:50:34,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 10:50:34,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 10:50:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:34,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 10:50:34,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 10:50:34,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:34,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 10:50:34,650 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:34,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054404618] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 10:50:34,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1181142620] [2022-12-14 10:50:34,656 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-14 10:50:34,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 10:50:34,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2022-12-14 10:50:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705199702] [2022-12-14 10:50:34,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 10:50:34,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 10:50:34,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:50:34,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 10:50:34,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:50:34,659 INFO L87 Difference]: Start difference. First operand 97740 states and 396160 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:35,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:35,776 INFO L93 Difference]: Finished difference Result 95893 states and 380339 transitions. [2022-12-14 10:50:35,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 10:50:35,776 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 10:50:35,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:36,258 INFO L225 Difference]: With dead ends: 95893 [2022-12-14 10:50:36,258 INFO L226 Difference]: Without dead ends: 89853 [2022-12-14 10:50:36,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-14 10:50:36,259 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 235 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:36,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 58 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 10:50:36,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89853 states. [2022-12-14 10:50:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89853 to 77091. [2022-12-14 10:50:38,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77091 states, 76999 states have (on average 4.131819893764854) internal successors, (318146), 77090 states have internal predecessors, (318146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:38,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77091 states to 77091 states and 318146 transitions. [2022-12-14 10:50:38,699 INFO L78 Accepts]: Start accepts. Automaton has 77091 states and 318146 transitions. Word has length 9 [2022-12-14 10:50:38,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:38,699 INFO L495 AbstractCegarLoop]: Abstraction has 77091 states and 318146 transitions. [2022-12-14 10:50:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand 77091 states and 318146 transitions. [2022-12-14 10:50:38,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 10:50:38,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:38,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 10:50:38,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 10:50:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c05c40d-3aa1-4af6-a857-174f740fe8b0/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 10:50:38,903 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:38,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash -917594267, now seen corresponding path program 1 times [2022-12-14 10:50:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:38,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556757885] [2022-12-14 10:50:38,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 10:50:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 10:50:39,055 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 10:50:39,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556757885] [2022-12-14 10:50:39,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556757885] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 10:50:39,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 10:50:39,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 10:50:39,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547688328] [2022-12-14 10:50:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 10:50:39,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 10:50:39,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 10:50:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 10:50:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:39,057 INFO L87 Difference]: Start difference. First operand 77091 states and 318146 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 10:50:39,552 INFO L93 Difference]: Finished difference Result 71934 states and 294010 transitions. [2022-12-14 10:50:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 10:50:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 10:50:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 10:50:40,099 INFO L225 Difference]: With dead ends: 71934 [2022-12-14 10:50:40,099 INFO L226 Difference]: Without dead ends: 71838 [2022-12-14 10:50:40,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 10:50:40,100 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 10:50:40,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 28 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 10:50:40,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71838 states. [2022-12-14 10:50:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71838 to 71838. [2022-12-14 10:50:41,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71838 states, 71751 states have (on average 4.0948558208247965) internal successors, (293810), 71837 states have internal predecessors, (293810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:42,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71838 states to 71838 states and 293810 transitions. [2022-12-14 10:50:42,255 INFO L78 Accepts]: Start accepts. Automaton has 71838 states and 293810 transitions. Word has length 10 [2022-12-14 10:50:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 10:50:42,256 INFO L495 AbstractCegarLoop]: Abstraction has 71838 states and 293810 transitions. [2022-12-14 10:50:42,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 10:50:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 71838 states and 293810 transitions. [2022-12-14 10:50:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 10:50:42,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 10:50:42,257 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-14 10:50:42,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 10:50:42,258 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-14 10:50:42,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 10:50:42,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1842885693, now seen corresponding path program 1 times [2022-12-14 10:50:42,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 10:50:42,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018693665] [2022-12-14 10:50:42,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 10:50:42,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 10:50:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:50:42,321 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 10:50:42,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 10:50:42,359 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 10:50:42,359 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 10:50:42,359 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-12-14 10:50:42,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcAErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-12-14 10:50:42,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-12-14 10:50:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-12-14 10:50:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-12-14 10:50:42,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location funcBErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-12-14 10:50:42,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 10:50:42,362 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-12-14 10:50:42,363 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-14 10:50:42,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-14 10:50:42,395 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2022-12-14 10:50:42,400 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 10:50:42,400 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 333 transitions, 744 flow [2022-12-14 10:50:42,400 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 333 transitions, 744 flow [2022-12-14 10:50:42,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 333 transitions, 744 flow [2022-12-14 10:50:43,266 INFO L130 PetriNetUnfolder]: 655/4524 cut-off events. [2022-12-14 10:50:43,267 INFO L131 PetriNetUnfolder]: For 419/419 co-relation queries the response was YES. [2022-12-14 10:50:43,303 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 34955 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. [2022-12-14 10:50:43,427 INFO L119 LiptonReduction]: Number of co-enabled transitions 37020 [2022-12-14 10:50:56,844 INFO L134 LiptonReduction]: Checked pairs total: 122606 [2022-12-14 10:50:56,845 INFO L136 LiptonReduction]: Total number of compositions: 321 [2022-12-14 10:50:56,845 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 99 transitions, 276 flow