./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- 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-38b53e6 [2022-11-26 00:15:54,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:15:54,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:15:54,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:15:54,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:15:54,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:15:54,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:15:54,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:15:54,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:15:54,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:15:54,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:15:54,298 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:15:54,298 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:15:54,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:15:54,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:15:54,308 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:15:54,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:15:54,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:15:54,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:15:54,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:15:54,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:15:54,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:15:54,329 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:15:54,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:15:54,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:15:54,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:15:54,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:15:54,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:15:54,343 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:15:54,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:15:54,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:15:54,346 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:15:54,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:15:54,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:15:54,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:15:54,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:15:54,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:15:54,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:15:54,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:15:54,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:15:54,356 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:15:54,357 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:15:54,401 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:15:54,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:15:54,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:15:54,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:15:54,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:15:54,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:15:54,404 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:15:54,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:15:54,404 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:15:54,405 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:15:54,406 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:15:54,406 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:15:54,406 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:15:54,407 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:15:54,407 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:15:54,407 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:15:54,407 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:15:54,408 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:15:54,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:15:54,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:15:54,409 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:15:54,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:15:54,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:15:54,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:15:54,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:15:54,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:15:54,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:15:54,410 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:15:54,411 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:15:54,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:15:54,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:15:54,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:15:54,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:15:54,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:15:54,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:54,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:15:54,413 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:15:54,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:15:54,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:15:54,413 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:15:54,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:15:54,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:15:54,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:15:54,414 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_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2022-11-26 00:15:54,749 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:15:54,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:15:54,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:15:54,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:15:54,799 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:15:54,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-26 00:15:58,439 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:15:58,733 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:15:58,743 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2022-11-26 00:15:58,763 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/data/cbf32e726/fe79e05e9f5d4f93b1c9443889a135e5/FLAGc52f88cbb [2022-11-26 00:15:58,778 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/data/cbf32e726/fe79e05e9f5d4f93b1c9443889a135e5 [2022-11-26 00:15:58,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:15:58,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:15:58,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:58,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:15:58,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:15:58,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:58" (1/1) ... [2022-11-26 00:15:58,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4adf5d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:58, skipping insertion in model container [2022-11-26 00:15:58,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:15:58" (1/1) ... [2022-11-26 00:15:58,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:15:58,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:15:59,403 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_e6f44bf5-569f-4879-8a81-48c2a1497070/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-26 00:15:59,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:59,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:15:59,513 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_e6f44bf5-569f-4879-8a81-48c2a1497070/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i[41323,41336] [2022-11-26 00:15:59,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:15:59,616 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:15:59,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59 WrapperNode [2022-11-26 00:15:59,617 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:15:59,618 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:59,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:15:59,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:15:59,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,707 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 160 [2022-11-26 00:15:59,707 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:15:59,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:15:59,708 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:15:59,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:15:59,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:15:59,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:15:59,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:15:59,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:15:59,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (1/1) ... [2022-11-26 00:15:59,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:15:59,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:15:59,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:15:59,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:15:59,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:15:59,867 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-26 00:15:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-26 00:15:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:15:59,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:15:59,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:15:59,870 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:16:00,013 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:16:00,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:16:00,462 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:16:00,483 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:16:00,484 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-11-26 00:16:00,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:16:00 BoogieIcfgContainer [2022-11-26 00:16:00,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:16:00,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:16:00,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:16:00,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:16:00,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:15:58" (1/3) ... [2022-11-26 00:16:00,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a31705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:16:00, skipping insertion in model container [2022-11-26 00:16:00,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:15:59" (2/3) ... [2022-11-26 00:16:00,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35a31705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:16:00, skipping insertion in model container [2022-11-26 00:16:00,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:16:00" (3/3) ... [2022-11-26 00:16:00,495 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2022-11-26 00:16:00,505 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:16:00,516 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:16:00,516 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-26 00:16:00,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:16:00,609 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-26 00:16:00,653 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:16:00,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 178 transitions, 364 flow [2022-11-26 00:16:00,671 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 178 transitions, 364 flow [2022-11-26 00:16:00,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 178 transitions, 364 flow [2022-11-26 00:16:00,788 INFO L130 PetriNetUnfolder]: 24/217 cut-off events. [2022-11-26 00:16:00,788 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-26 00:16:00,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 217 events. 24/217 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 631 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 130. Up to 4 conditions per place. [2022-11-26 00:16:00,818 INFO L119 LiptonReduction]: Number of co-enabled transitions 8036 [2022-11-26 00:16:07,194 INFO L134 LiptonReduction]: Checked pairs total: 14442 [2022-11-26 00:16:07,195 INFO L136 LiptonReduction]: Total number of compositions: 168 [2022-11-26 00:16:07,205 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 64 transitions, 136 flow [2022-11-26 00:16:07,284 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:07,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:16:07,331 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;@15d66c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:16:07,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-26 00:16:07,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:07,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:16:07,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:07,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:16:07,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 00:16:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:07,355 INFO L85 PathProgramCache]: Analyzing trace with hash 21999561, now seen corresponding path program 1 times [2022-11-26 00:16:07,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:07,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143788953] [2022-11-26 00:16:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:07,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:07,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:07,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143788953] [2022-11-26 00:16:07,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143788953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:07,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:07,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:16:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839918356] [2022-11-26 00:16:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:07,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:16:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:07,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:16:07,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:16:07,789 INFO L87 Difference]: Start difference. First operand has 479 states, 432 states have (on average 2.701388888888889) internal successors, (1167), 478 states have internal predecessors, (1167), 0 states have call successors, (0), 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) [2022-11-26 00:16:08,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:08,035 INFO L93 Difference]: Finished difference Result 414 states and 791 transitions. [2022-11-26 00:16:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:16:08,039 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 [2022-11-26 00:16:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:08,065 INFO L225 Difference]: With dead ends: 414 [2022-11-26 00:16:08,067 INFO L226 Difference]: Without dead ends: 405 [2022-11-26 00:16:08,069 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 [2022-11-26 00:16:08,077 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 29 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:08,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 10 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:16:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-11-26 00:16:08,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2022-11-26 00:16:08,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 378 states have (on average 2.0476190476190474) internal successors, (774), 404 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:08,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 774 transitions. [2022-11-26 00:16:08,182 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 774 transitions. Word has length 4 [2022-11-26 00:16:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:08,184 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 774 transitions. [2022-11-26 00:16:08,184 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) [2022-11-26 00:16:08,185 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 774 transitions. [2022-11-26 00:16:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:16:08,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:08,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 00:16:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:16:08,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-26 00:16:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -333185860, now seen corresponding path program 1 times [2022-11-26 00:16:08,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:08,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286155394] [2022-11-26 00:16:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:08,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:16:08,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:16:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:16:08,311 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:16:08,312 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:16:08,314 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-26 00:16:08,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-26 00:16:08,317 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-26 00:16:08,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-26 00:16:08,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-26 00:16:08,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-26 00:16:08,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-26 00:16:08,319 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-26 00:16:08,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-26 00:16:08,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-26 00:16:08,320 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-26 00:16:08,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-26 00:16:08,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-26 00:16:08,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-26 00:16:08,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-26 00:16:08,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-26 00:16:08,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-26 00:16:08,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-26 00:16:08,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-26 00:16:08,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-26 00:16:08,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-26 00:16:08,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:16:08,327 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-26 00:16:08,330 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:16:08,330 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 00:16:08,367 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 00:16:08,372 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:16:08,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 262 transitions, 542 flow [2022-11-26 00:16:08,373 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 262 transitions, 542 flow [2022-11-26 00:16:08,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 262 transitions, 542 flow [2022-11-26 00:16:08,487 INFO L130 PetriNetUnfolder]: 45/377 cut-off events. [2022-11-26 00:16:08,488 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-26 00:16:08,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 377 events. 45/377 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1434 event pairs, 0 based on Foata normal form. 0/302 useless extension candidates. Maximal degree in co-relation 232. Up to 8 conditions per place. [2022-11-26 00:16:08,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 32636 [2022-11-26 00:16:15,932 INFO L134 LiptonReduction]: Checked pairs total: 89919 [2022-11-26 00:16:15,932 INFO L136 LiptonReduction]: Total number of compositions: 231 [2022-11-26 00:16:15,934 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 118 transitions, 254 flow [2022-11-26 00:16:16,923 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:16,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:16:16,926 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;@15d66c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:16:16,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-26 00:16:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:16,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:16:16,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:16,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:16:16,977 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:16,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1232249475, now seen corresponding path program 1 times [2022-11-26 00:16:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265391084] [2022-11-26 00:16:16,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:17,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:17,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265391084] [2022-11-26 00:16:17,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265391084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:17,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:17,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:16:17,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407283786] [2022-11-26 00:16:17,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:16:17,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:16:17,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:16:17,132 INFO L87 Difference]: Start difference. First operand has 19420 states, 18941 states have (on average 3.8773032046882423) internal successors, (73440), 19419 states have internal predecessors, (73440), 0 states have call successors, (0), 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) [2022-11-26 00:16:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:17,926 INFO L93 Difference]: Finished difference Result 19347 states and 56143 transitions. [2022-11-26 00:16:17,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:16:17,927 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 [2022-11-26 00:16:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:18,103 INFO L225 Difference]: With dead ends: 19347 [2022-11-26 00:16:18,103 INFO L226 Difference]: Without dead ends: 19282 [2022-11-26 00:16:18,104 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 [2022-11-26 00:16:18,112 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:18,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 24 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:16:18,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19282 states. [2022-11-26 00:16:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19282 to 19282. [2022-11-26 00:16:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19282 states, 18825 states have (on average 2.9721115537848606) internal successors, (55950), 19281 states have internal predecessors, (55950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19282 states to 19282 states and 55950 transitions. [2022-11-26 00:16:19,209 INFO L78 Accepts]: Start accepts. Automaton has 19282 states and 55950 transitions. Word has length 5 [2022-11-26 00:16:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:19,210 INFO L495 AbstractCegarLoop]: Abstraction has 19282 states and 55950 transitions. [2022-11-26 00:16:19,210 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) [2022-11-26 00:16:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 19282 states and 55950 transitions. [2022-11-26 00:16:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:16:19,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:19,222 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:19,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:16:19,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1980048932, now seen corresponding path program 1 times [2022-11-26 00:16:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:19,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417092681] [2022-11-26 00:16:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:19,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:19,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:19,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417092681] [2022-11-26 00:16:19,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417092681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:19,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:19,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:16:19,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065514898] [2022-11-26 00:16:19,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:19,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:16:19,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:19,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:16:19,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:16:19,338 INFO L87 Difference]: Start difference. First operand 19282 states and 55950 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-26 00:16:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:19,989 INFO L93 Difference]: Finished difference Result 23938 states and 66154 transitions. [2022-11-26 00:16:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:16:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-26 00:16:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:20,425 INFO L225 Difference]: With dead ends: 23938 [2022-11-26 00:16:20,428 INFO L226 Difference]: Without dead ends: 23938 [2022-11-26 00:16:20,428 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 [2022-11-26 00:16:20,433 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 63 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:20,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 25 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:16:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23938 states. [2022-11-26 00:16:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23938 to 21752. [2022-11-26 00:16:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21752 states, 21355 states have (on average 2.921470381643643) internal successors, (62388), 21751 states have internal predecessors, (62388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21752 states to 21752 states and 62388 transitions. [2022-11-26 00:16:21,560 INFO L78 Accepts]: Start accepts. Automaton has 21752 states and 62388 transitions. Word has length 9 [2022-11-26 00:16:21,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:21,565 INFO L495 AbstractCegarLoop]: Abstraction has 21752 states and 62388 transitions. [2022-11-26 00:16:21,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-26 00:16:21,565 INFO L276 IsEmpty]: Start isEmpty. Operand 21752 states and 62388 transitions. [2022-11-26 00:16:21,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:16:21,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:21,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:16:21,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:16:21,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:21,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1980049053, now seen corresponding path program 1 times [2022-11-26 00:16:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:21,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569120152] [2022-11-26 00:16:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:21,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:21,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:21,632 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:21,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569120152] [2022-11-26 00:16:21,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569120152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:21,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:21,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:16:21,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121195041] [2022-11-26 00:16:21,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:21,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:16:21,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:21,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:16:21,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:16:21,635 INFO L87 Difference]: Start difference. First operand 21752 states and 62388 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-26 00:16:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:22,151 INFO L93 Difference]: Finished difference Result 22928 states and 62256 transitions. [2022-11-26 00:16:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:16:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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 [2022-11-26 00:16:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:22,278 INFO L225 Difference]: With dead ends: 22928 [2022-11-26 00:16:22,278 INFO L226 Difference]: Without dead ends: 22856 [2022-11-26 00:16:22,279 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 [2022-11-26 00:16:22,280 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 59 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:22,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 25 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:16:22,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22856 states. [2022-11-26 00:16:23,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22856 to 20942. [2022-11-26 00:16:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20942 states, 20645 states have (on average 2.8439815936062) internal successors, (58714), 20941 states have internal predecessors, (58714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20942 states to 20942 states and 58714 transitions. [2022-11-26 00:16:23,526 INFO L78 Accepts]: Start accepts. Automaton has 20942 states and 58714 transitions. Word has length 9 [2022-11-26 00:16:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:23,526 INFO L495 AbstractCegarLoop]: Abstraction has 20942 states and 58714 transitions. [2022-11-26 00:16:23,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-26 00:16:23,527 INFO L276 IsEmpty]: Start isEmpty. Operand 20942 states and 58714 transitions. [2022-11-26 00:16:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:16:23,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:23,529 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:16:23,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:16:23,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:23,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 930218218, now seen corresponding path program 1 times [2022-11-26 00:16:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:23,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477092400] [2022-11-26 00:16:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:23,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:23,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:16:23,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:23,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477092400] [2022-11-26 00:16:23,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477092400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:23,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:16:23,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:16:23,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900606705] [2022-11-26 00:16:23,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:23,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:16:23,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:23,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:16:23,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:16:23,654 INFO L87 Difference]: Start difference. First operand 20942 states and 58714 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) [2022-11-26 00:16:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:23,943 INFO L93 Difference]: Finished difference Result 19933 states and 55727 transitions. [2022-11-26 00:16:23,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:16:23,944 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 [2022-11-26 00:16:23,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:24,032 INFO L225 Difference]: With dead ends: 19933 [2022-11-26 00:16:24,032 INFO L226 Difference]: Without dead ends: 19933 [2022-11-26 00:16:24,032 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 [2022-11-26 00:16:24,033 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:24,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 22 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:16:24,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19933 states. [2022-11-26 00:16:25,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19933 to 19933. [2022-11-26 00:16:25,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19933 states, 19685 states have (on average 2.830937261874524) internal successors, (55727), 19932 states have internal predecessors, (55727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19933 states to 19933 states and 55727 transitions. [2022-11-26 00:16:25,149 INFO L78 Accepts]: Start accepts. Automaton has 19933 states and 55727 transitions. Word has length 9 [2022-11-26 00:16:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:25,150 INFO L495 AbstractCegarLoop]: Abstraction has 19933 states and 55727 transitions. [2022-11-26 00:16:25,151 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) [2022-11-26 00:16:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 19933 states and 55727 transitions. [2022-11-26 00:16:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:16:25,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:25,152 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:16:25,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:16:25,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:25,154 INFO L85 PathProgramCache]: Analyzing trace with hash 930218189, now seen corresponding path program 1 times [2022-11-26 00:16:25,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:25,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818357694] [2022-11-26 00:16:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:25,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:25,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:25,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:16:25,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818357694] [2022-11-26 00:16:25,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818357694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:16:25,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854150358] [2022-11-26 00:16:25,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:25,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:16:25,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:16:25,270 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:16:25,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:16:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:16:25,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:16:25,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:16:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:16:25,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:16:25,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854150358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:16:25,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-26 00:16:25,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-26 00:16:25,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233714103] [2022-11-26 00:16:25,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:16:25,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:16:25,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:25,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:16:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:16:25,504 INFO L87 Difference]: Start difference. First operand 19933 states and 55727 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2022-11-26 00:16:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:25,858 INFO L93 Difference]: Finished difference Result 18924 states and 52740 transitions. [2022-11-26 00:16:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:16:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2022-11-26 00:16:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:25,969 INFO L225 Difference]: With dead ends: 18924 [2022-11-26 00:16:25,969 INFO L226 Difference]: Without dead ends: 18924 [2022-11-26 00:16:25,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:16:25,971 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 112 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:25,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 22 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:16:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18924 states. [2022-11-26 00:16:26,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18924 to 18924. [2022-11-26 00:16:26,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18924 states, 18725 states have (on average 2.816555407209613) internal successors, (52740), 18923 states have internal predecessors, (52740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18924 states to 18924 states and 52740 transitions. [2022-11-26 00:16:26,850 INFO L78 Accepts]: Start accepts. Automaton has 18924 states and 52740 transitions. Word has length 9 [2022-11-26 00:16:26,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:26,850 INFO L495 AbstractCegarLoop]: Abstraction has 18924 states and 52740 transitions. [2022-11-26 00:16:26,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2022-11-26 00:16:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18924 states and 52740 transitions. [2022-11-26 00:16:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:16:26,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:16:26,852 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:16:26,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:16:27,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6f44bf5-569f-4879-8a81-48c2a1497070/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:16:27,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-26 00:16:27,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:16:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash 586595713, now seen corresponding path program 1 times [2022-11-26 00:16:27,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:16:27,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652665466] [2022-11-26 00:16:27,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:16:27,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:16:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:16:27,075 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:16:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:16:27,094 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:16:27,094 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:16:27,094 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-26 00:16:27,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-26 00:16:27,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-26 00:16:27,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-26 00:16:27,095 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-26 00:16:27,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-26 00:16:27,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-26 00:16:27,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-26 00:16:27,096 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-26 00:16:27,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-26 00:16:27,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-26 00:16:27,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-26 00:16:27,097 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-26 00:16:27,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-26 00:16:27,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-26 00:16:27,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-26 00:16:27,098 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-26 00:16:27,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-26 00:16:27,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-26 00:16:27,099 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-26 00:16:27,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-26 00:16:27,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-26 00:16:27,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-26 00:16:27,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-26 00:16:27,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-26 00:16:27,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-26 00:16:27,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-26 00:16:27,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-26 00:16:27,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-26 00:16:27,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:16:27,102 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-26 00:16:27,103 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:16:27,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 00:16:27,143 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-26 00:16:27,147 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:16:27,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 306 places, 346 transitions, 722 flow [2022-11-26 00:16:27,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 306 places, 346 transitions, 722 flow [2022-11-26 00:16:27,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 306 places, 346 transitions, 722 flow [2022-11-26 00:16:27,307 INFO L130 PetriNetUnfolder]: 71/578 cut-off events. [2022-11-26 00:16:27,307 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-26 00:16:27,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 606 conditions, 578 events. 71/578 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2405 event pairs, 1 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 385. Up to 16 conditions per place. [2022-11-26 00:16:27,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 69864 [2022-11-26 00:16:36,718 INFO L134 LiptonReduction]: Checked pairs total: 206939 [2022-11-26 00:16:36,718 INFO L136 LiptonReduction]: Total number of compositions: 303 [2022-11-26 00:16:36,720 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 127 places, 165 transitions, 360 flow [2022-11-26 00:17:01,851 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:17:01,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:17:01,853 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;@15d66c87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:17:01,853 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-26 00:17:02,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:17:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:17:02,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:17:02,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:17:02,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-26 00:17:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:17:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1931202418, now seen corresponding path program 1 times [2022-11-26 00:17:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:17:02,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415231498] [2022-11-26 00:17:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:17:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:17:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:17:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:17:02,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:17:02,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415231498] [2022-11-26 00:17:02,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415231498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:17:02,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:17:02,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:17:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798836547] [2022-11-26 00:17:02,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:17:02,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:17:02,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:17:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:17:02,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:17:06,141 INFO L87 Difference]: Start difference. First operand has 649093 states, 644456 states have (on average 5.162997939347295) internal successors, (3327325), 649092 states have internal predecessors, (3327325), 0 states have call successors, (0), 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)