./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.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_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/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_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/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_e2331496-55c1-4913-bc68-9c6878d517c9/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 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 --- 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 00:18:43,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:18:43,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:18:43,473 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:18:43,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:18:43,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:18:43,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:18:43,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:18:43,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:18:43,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:18:43,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:18:43,500 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:18:43,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:18:43,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:18:43,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:18:43,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:18:43,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:18:43,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:18:43,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:18:43,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:18:43,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:18:43,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:18:43,527 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:18:43,528 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:18:43,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:18:43,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:18:43,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:18:43,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:18:43,543 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:18:43,544 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:18:43,545 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:18:43,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:18:43,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:18:43,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:18:43,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:18:43,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:18:43,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:18:43,553 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:18:43,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:18:43,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:18:43,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:18:43,557 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:18:43,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:18:43,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:18:43,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:18:43,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:18:43,602 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:18:43,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:18:43,603 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:18:43,603 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:18:43,603 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:18:43,603 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:18:43,604 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:18:43,604 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:18:43,604 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:18:43,604 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:18:43,605 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:18:43,605 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:18:43,605 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:18:43,605 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:18:43,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:18:43,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:18:43,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:18:43,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:18:43,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:18:43,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:18:43,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:18:43,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:18:43,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:18:43,608 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:18:43,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:18:43,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:18:43,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:18:43,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:18:43,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:18:43,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:18:43,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:18:43,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:18:43,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:18:43,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:18:43,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:18:43,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:18:43,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:18:43,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:18:43,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:18:43,613 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_e2331496-55c1-4913-bc68-9c6878d517c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f447624cefe078f3d1dfeed3af04dfcf2078828fba23b82e0579b17d6eb7f02 [2022-11-26 00:18:43,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:18:43,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:18:43,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:18:43,981 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:18:43,981 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:18:43,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-26 00:18:47,014 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:18:47,330 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:18:47,330 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/sv-benchmarks/c/pthread-lit/sssc12.i [2022-11-26 00:18:47,361 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/data/5c40c37c2/4cddfe643d574633a0f7d768a9f9937d/FLAG86ec8fd20 [2022-11-26 00:18:47,383 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/data/5c40c37c2/4cddfe643d574633a0f7d768a9f9937d [2022-11-26 00:18:47,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:18:47,391 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:18:47,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:18:47,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:18:47,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:18:47,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:18:47" (1/1) ... [2022-11-26 00:18:47,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67da54e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:47, skipping insertion in model container [2022-11-26 00:18:47,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:18:47" (1/1) ... [2022-11-26 00:18:47,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:18:47,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:18:48,009 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_e2331496-55c1-4913-bc68-9c6878d517c9/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-26 00:18:48,015 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:18:48,017 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:18:48,019 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:18:48,020 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:18:48,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:18:48,048 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:18:48,089 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_e2331496-55c1-4913-bc68-9c6878d517c9/sv-benchmarks/c/pthread-lit/sssc12.i[46865,46878] [2022-11-26 00:18:48,090 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:18:48,091 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:18:48,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-26 00:18:48,092 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-26 00:18:48,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:18:48,176 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:18:48,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48 WrapperNode [2022-11-26 00:18:48,177 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:18:48,179 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:18:48,180 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:18:48,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:18:48,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,269 INFO L138 Inliner]: procedures = 275, calls = 23, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 88 [2022-11-26 00:18:48,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:18:48,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:18:48,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:18:48,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:18:48,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,332 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,334 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:18:48,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:18:48,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:18:48,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:18:48,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (1/1) ... [2022-11-26 00:18:48,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:18:48,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:18:48,396 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:18:48,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:18:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-26 00:18:48,478 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2022-11-26 00:18:48,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:18:48,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:18:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:18:48,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:18:48,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:18:48,483 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 00:18:48,670 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:18:48,672 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:18:48,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:18:48,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:18:48,926 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-26 00:18:48,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:18:48 BoogieIcfgContainer [2022-11-26 00:18:48,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:18:48,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:18:48,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:18:48,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:18:48,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:18:47" (1/3) ... [2022-11-26 00:18:48,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3e8a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:18:48, skipping insertion in model container [2022-11-26 00:18:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:18:48" (2/3) ... [2022-11-26 00:18:48,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a3e8a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:18:48, skipping insertion in model container [2022-11-26 00:18:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:18:48" (3/3) ... [2022-11-26 00:18:48,939 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2022-11-26 00:18:48,949 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:18:48,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:18:48,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-26 00:18:48,961 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:18:49,025 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 00:18:49,063 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:18:49,081 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-26 00:18:49,085 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 93 transitions, 191 flow [2022-11-26 00:18:49,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 93 transitions, 191 flow [2022-11-26 00:18:49,146 INFO L130 PetriNetUnfolder]: 7/105 cut-off events. [2022-11-26 00:18:49,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-26 00:18:49,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 7/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 58. Up to 4 conditions per place. [2022-11-26 00:18:49,155 INFO L119 LiptonReduction]: Number of co-enabled transitions 1320 [2022-11-26 00:18:54,424 INFO L134 LiptonReduction]: Checked pairs total: 1335 [2022-11-26 00:18:54,424 INFO L136 LiptonReduction]: Total number of compositions: 113 [2022-11-26 00:18:54,433 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 17 places, 15 transitions, 35 flow [2022-11-26 00:18:54,449 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 00:18:54,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:18:54,476 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;@4c4fd26f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:18:54,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-26 00:18:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 00:18:54,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:18:54,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:54,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:18:54,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-26 00:18:54,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:54,492 INFO L85 PathProgramCache]: Analyzing trace with hash 13745432, now seen corresponding path program 1 times [2022-11-26 00:18:54,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:54,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901469376] [2022-11-26 00:18:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:54,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:54,745 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 00:18:54,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:18:54,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901469376] [2022-11-26 00:18:54,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901469376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:18:54,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:18:54,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:18:54,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884316181] [2022-11-26 00:18:54,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:18:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:18:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:18:54,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:18:54,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:18:54,785 INFO L87 Difference]: Start difference. First operand has 47 states, 34 states have (on average 2.411764705882353) internal successors, (82), 46 states have internal predecessors, (82), 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 00:18:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:18:54,825 INFO L93 Difference]: Finished difference Result 19 states and 31 transitions. [2022-11-26 00:18:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:18:54,828 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 00:18:54,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:18:54,837 INFO L225 Difference]: With dead ends: 19 [2022-11-26 00:18:54,838 INFO L226 Difference]: Without dead ends: 19 [2022-11-26 00:18:54,839 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 00:18:54,843 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:18:54,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:18:54,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-26 00:18:54,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-26 00:18:54,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 00:18:54,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2022-11-26 00:18:54,883 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 4 [2022-11-26 00:18:54,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:18:54,885 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2022-11-26 00:18:54,889 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 00:18:54,890 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2022-11-26 00:18:54,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:18:54,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:54,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:18:54,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:18:54,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-26 00:18:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:54,897 INFO L85 PathProgramCache]: Analyzing trace with hash 426109110, now seen corresponding path program 1 times [2022-11-26 00:18:54,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:54,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997950397] [2022-11-26 00:18:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:18:55,169 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 00:18:55,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:18:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997950397] [2022-11-26 00:18:55,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997950397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:18:55,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:18:55,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:18:55,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946142994] [2022-11-26 00:18:55,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:18:55,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:18:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:18:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:18:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:18:55,175 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 00:18:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:18:55,216 INFO L93 Difference]: Finished difference Result 27 states and 45 transitions. [2022-11-26 00:18:55,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:18:55,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 00:18:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:18:55,219 INFO L225 Difference]: With dead ends: 27 [2022-11-26 00:18:55,219 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:18:55,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:18:55,223 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:18:55,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:18:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:18:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2022-11-26 00:18:55,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 21 states have (on average 2.0) internal successors, (42), 22 states have internal predecessors, (42), 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 00:18:55,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 42 transitions. [2022-11-26 00:18:55,238 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 42 transitions. Word has length 5 [2022-11-26 00:18:55,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:18:55,240 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 42 transitions. [2022-11-26 00:18:55,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 00:18:55,240 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 42 transitions. [2022-11-26 00:18:55,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:18:55,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:55,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-11-26 00:18:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:18:55,245 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-26 00:18:55,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:55,248 INFO L85 PathProgramCache]: Analyzing trace with hash 324400970, now seen corresponding path program 1 times [2022-11-26 00:18:55,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:55,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414799878] [2022-11-26 00:18:55,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:55,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:18:55,292 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:18:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:18:55,340 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:18:55,341 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:18:55,342 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-26 00:18:55,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-26 00:18:55,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-26 00:18:55,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-26 00:18:55,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-26 00:18:55,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-26 00:18:55,346 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-26 00:18:55,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-26 00:18:55,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-26 00:18:55,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-26 00:18:55,347 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-26 00:18:55,348 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-26 00:18:55,349 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-26 00:18:55,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:18:55,352 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:18:55,354 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:18:55,355 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-26 00:18:55,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 00:18:55,415 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:18:55,418 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-26 00:18:55,419 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 138 transitions, 288 flow [2022-11-26 00:18:55,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 138 transitions, 288 flow [2022-11-26 00:18:55,510 INFO L130 PetriNetUnfolder]: 12/164 cut-off events. [2022-11-26 00:18:55,511 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-26 00:18:55,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 164 events. 12/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 106. Up to 6 conditions per place. [2022-11-26 00:18:55,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 6600 [2022-11-26 00:18:59,841 INFO L134 LiptonReduction]: Checked pairs total: 19684 [2022-11-26 00:18:59,841 INFO L136 LiptonReduction]: Total number of compositions: 122 [2022-11-26 00:18:59,842 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 46 transitions, 104 flow [2022-11-26 00:18:59,944 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 00:18:59,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:18:59,946 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;@4c4fd26f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:18:59,947 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-11-26 00:18:59,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 00:18:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:18:59,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:18:59,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:18:59,954 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-26 00:18:59,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:18:59,955 INFO L85 PathProgramCache]: Analyzing trace with hash 717340502, now seen corresponding path program 1 times [2022-11-26 00:18:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:18:59,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992593710] [2022-11-26 00:18:59,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:18:59,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:18:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:00,010 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 00:19:00,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:00,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992593710] [2022-11-26 00:19:00,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992593710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:00,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:00,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:19:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439636028] [2022-11-26 00:19:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:00,023 INFO L87 Difference]: Start difference. First operand has 2035 states, 1932 states have (on average 3.0574534161490683) internal successors, (5907), 2034 states have internal predecessors, (5907), 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 00:19:00,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:00,188 INFO L93 Difference]: Finished difference Result 1516 states and 4359 transitions. [2022-11-26 00:19:00,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:00,189 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 00:19:00,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:00,207 INFO L225 Difference]: With dead ends: 1516 [2022-11-26 00:19:00,207 INFO L226 Difference]: Without dead ends: 1516 [2022-11-26 00:19:00,208 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 00:19:00,209 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:00,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 12 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-11-26 00:19:00,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 1356. [2022-11-26 00:19:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 1336 states have (on average 2.927395209580838) internal successors, (3911), 1355 states have internal predecessors, (3911), 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 00:19:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 3911 transitions. [2022-11-26 00:19:00,332 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 3911 transitions. Word has length 5 [2022-11-26 00:19:00,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:00,333 INFO L495 AbstractCegarLoop]: Abstraction has 1356 states and 3911 transitions. [2022-11-26 00:19:00,333 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 00:19:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 3911 transitions. [2022-11-26 00:19:00,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:19:00,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:00,334 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:00,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:19:00,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-26 00:19:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:00,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1805578056, now seen corresponding path program 1 times [2022-11-26 00:19:00,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:00,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088777024] [2022-11-26 00:19:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:00,464 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 00:19:00,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:00,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088777024] [2022-11-26 00:19:00,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088777024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:00,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:00,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:19:00,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090452643] [2022-11-26 00:19:00,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:00,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:00,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:00,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:00,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:00,466 INFO L87 Difference]: Start difference. First operand 1356 states and 3911 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 00:19:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:00,593 INFO L93 Difference]: Finished difference Result 1407 states and 3983 transitions. [2022-11-26 00:19:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:00,594 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 00:19:00,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:00,608 INFO L225 Difference]: With dead ends: 1407 [2022-11-26 00:19:00,608 INFO L226 Difference]: Without dead ends: 1407 [2022-11-26 00:19:00,609 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 00:19:00,610 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:00,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 46 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:00,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-26 00:19:00,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1377. [2022-11-26 00:19:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1357 states have (on average 2.8953574060427414) internal successors, (3929), 1376 states have internal predecessors, (3929), 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 00:19:00,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 3929 transitions. [2022-11-26 00:19:00,690 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 3929 transitions. Word has length 9 [2022-11-26 00:19:00,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:00,690 INFO L495 AbstractCegarLoop]: Abstraction has 1377 states and 3929 transitions. [2022-11-26 00:19:00,691 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 00:19:00,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 3929 transitions. [2022-11-26 00:19:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:19:00,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:00,695 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-26 00:19:00,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:19:00,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-11-26 00:19:00,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:00,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1375717693, now seen corresponding path program 1 times [2022-11-26 00:19:00,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:00,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902357999] [2022-11-26 00:19:00,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:00,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:19:00,718 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:19:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:19:00,733 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:19:00,734 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:19:00,734 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2022-11-26 00:19:00,734 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-11-26 00:19:00,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-11-26 00:19:00,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-11-26 00:19:00,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-11-26 00:19:00,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-11-26 00:19:00,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-11-26 00:19:00,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-11-26 00:19:00,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-11-26 00:19:00,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-11-26 00:19:00,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2022-11-26 00:19:00,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2022-11-26 00:19:00,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2022-11-26 00:19:00,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-11-26 00:19:00,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-11-26 00:19:00,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-11-26 00:19:00,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-11-26 00:19:00,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-11-26 00:19:00,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-11-26 00:19:00,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:19:00,740 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-26 00:19:00,741 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:19:00,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-26 00:19:00,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 00:19:00,783 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:19:00,783 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-26 00:19:00,783 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 183 transitions, 387 flow [2022-11-26 00:19:00,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 183 transitions, 387 flow [2022-11-26 00:19:00,836 INFO L130 PetriNetUnfolder]: 17/223 cut-off events. [2022-11-26 00:19:00,836 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-26 00:19:00,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 17/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 599 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 168. Up to 8 conditions per place. [2022-11-26 00:19:00,848 INFO L119 LiptonReduction]: Number of co-enabled transitions 15840 [2022-11-26 00:19:05,378 INFO L134 LiptonReduction]: Checked pairs total: 46838 [2022-11-26 00:19:05,378 INFO L136 LiptonReduction]: Total number of compositions: 156 [2022-11-26 00:19:05,379 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 66 transitions, 153 flow [2022-11-26 00:19:07,003 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 00:19:07,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:19:07,012 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;@4c4fd26f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:19:07,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-26 00:19:07,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 00:19:07,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:19:07,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:07,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:19:07,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1083462052, now seen corresponding path program 1 times [2022-11-26 00:19:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:07,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84387024] [2022-11-26 00:19:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:07,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:07,205 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 00:19:07,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:07,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84387024] [2022-11-26 00:19:07,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84387024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:07,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:07,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:19:07,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081145232] [2022-11-26 00:19:07,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:07,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:07,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:07,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:07,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:07,271 INFO L87 Difference]: Start difference. First operand has 36702 states, 35963 states have (on average 4.037121485971693) internal successors, (145187), 36701 states have internal predecessors, (145187), 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 00:19:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:08,120 INFO L93 Difference]: Finished difference Result 25792 states and 101429 transitions. [2022-11-26 00:19:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:08,120 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 00:19:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:08,480 INFO L225 Difference]: With dead ends: 25792 [2022-11-26 00:19:08,480 INFO L226 Difference]: Without dead ends: 25792 [2022-11-26 00:19:08,481 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 00:19:08,482 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:08,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 15 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:08,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25792 states. [2022-11-26 00:19:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25792 to 24752. [2022-11-26 00:19:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24752 states, 24600 states have (on average 3.962479674796748) internal successors, (97477), 24751 states have internal predecessors, (97477), 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 00:19:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24752 states to 24752 states and 97477 transitions. [2022-11-26 00:19:10,205 INFO L78 Accepts]: Start accepts. Automaton has 24752 states and 97477 transitions. Word has length 5 [2022-11-26 00:19:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:10,206 INFO L495 AbstractCegarLoop]: Abstraction has 24752 states and 97477 transitions. [2022-11-26 00:19:10,206 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 00:19:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24752 states and 97477 transitions. [2022-11-26 00:19:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-26 00:19:10,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:10,208 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:10,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:19:10,209 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:10,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1453320637, now seen corresponding path program 1 times [2022-11-26 00:19:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:10,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822238183] [2022-11-26 00:19:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:10,457 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 00:19:10,467 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822238183] [2022-11-26 00:19:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822238183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:10,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:10,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:19:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099456396] [2022-11-26 00:19:10,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:10,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:10,469 INFO L87 Difference]: Start difference. First operand 24752 states and 97477 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 00:19:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:11,101 INFO L93 Difference]: Finished difference Result 28102 states and 110459 transitions. [2022-11-26 00:19:11,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:11,103 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 00:19:11,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:11,437 INFO L225 Difference]: With dead ends: 28102 [2022-11-26 00:19:11,438 INFO L226 Difference]: Without dead ends: 28102 [2022-11-26 00:19:11,438 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 00:19:11,439 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 46 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:11,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 77 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:11,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28102 states. [2022-11-26 00:19:12,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28102 to 26745. [2022-11-26 00:19:12,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26745 states, 26593 states have (on average 4.006580679126086) internal successors, (106547), 26744 states have internal predecessors, (106547), 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 00:19:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26745 states to 26745 states and 106547 transitions. [2022-11-26 00:19:13,001 INFO L78 Accepts]: Start accepts. Automaton has 26745 states and 106547 transitions. Word has length 9 [2022-11-26 00:19:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:13,002 INFO L495 AbstractCegarLoop]: Abstraction has 26745 states and 106547 transitions. [2022-11-26 00:19:13,002 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 00:19:13,002 INFO L276 IsEmpty]: Start isEmpty. Operand 26745 states and 106547 transitions. [2022-11-26 00:19:13,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:19:13,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:13,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:13,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:19:13,010 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:13,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:13,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2103267950, now seen corresponding path program 1 times [2022-11-26 00:19:13,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:13,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064791844] [2022-11-26 00:19:13,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:13,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:13,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:13,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064791844] [2022-11-26 00:19:13,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064791844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:13,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:13,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:19:13,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634935503] [2022-11-26 00:19:13,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:13,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:13,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:13,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:13,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:13,114 INFO L87 Difference]: Start difference. First operand 26745 states and 106547 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:19:13,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:13,537 INFO L93 Difference]: Finished difference Result 25939 states and 100627 transitions. [2022-11-26 00:19:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:13,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:19:13,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:13,747 INFO L225 Difference]: With dead ends: 25939 [2022-11-26 00:19:13,747 INFO L226 Difference]: Without dead ends: 25939 [2022-11-26 00:19:13,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 00:19:13,748 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 46 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:13,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 76 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:19:13,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25939 states. [2022-11-26 00:19:14,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25939 to 25303. [2022-11-26 00:19:14,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25303 states, 25151 states have (on average 3.9290286668522127) internal successors, (98819), 25302 states have internal predecessors, (98819), 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 00:19:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25303 states to 25303 states and 98819 transitions. [2022-11-26 00:19:14,889 INFO L78 Accepts]: Start accepts. Automaton has 25303 states and 98819 transitions. Word has length 10 [2022-11-26 00:19:14,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:14,889 INFO L495 AbstractCegarLoop]: Abstraction has 25303 states and 98819 transitions. [2022-11-26 00:19:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:19:14,890 INFO L276 IsEmpty]: Start isEmpty. Operand 25303 states and 98819 transitions. [2022-11-26 00:19:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-26 00:19:14,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:14,891 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:14,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:19:14,892 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash -248669782, now seen corresponding path program 1 times [2022-11-26 00:19:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:14,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420900509] [2022-11-26 00:19:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:19:14,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:14,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420900509] [2022-11-26 00:19:14,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420900509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:14,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:14,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:19:14,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834238651] [2022-11-26 00:19:14,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:14,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:14,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:14,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:14,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:14,949 INFO L87 Difference]: Start difference. First operand 25303 states and 98819 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 00:19:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:15,580 INFO L93 Difference]: Finished difference Result 26713 states and 102833 transitions. [2022-11-26 00:19:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:19:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 13 [2022-11-26 00:19:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:15,718 INFO L225 Difference]: With dead ends: 26713 [2022-11-26 00:19:15,719 INFO L226 Difference]: Without dead ends: 26713 [2022-11-26 00:19:15,719 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 00:19:15,720 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 45 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:15,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 76 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:19:15,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26713 states. [2022-11-26 00:19:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26713 to 26017. [2022-11-26 00:19:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26017 states, 25865 states have (on average 3.899362072298473) internal successors, (100857), 26016 states have internal predecessors, (100857), 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 00:19:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26017 states to 26017 states and 100857 transitions. [2022-11-26 00:19:16,832 INFO L78 Accepts]: Start accepts. Automaton has 26017 states and 100857 transitions. Word has length 13 [2022-11-26 00:19:16,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:16,833 INFO L495 AbstractCegarLoop]: Abstraction has 26017 states and 100857 transitions. [2022-11-26 00:19:16,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 00:19:16,833 INFO L276 IsEmpty]: Start isEmpty. Operand 26017 states and 100857 transitions. [2022-11-26 00:19:16,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-26 00:19:16,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:16,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:16,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:19:16,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:16,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 182854473, now seen corresponding path program 1 times [2022-11-26 00:19:16,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:16,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413011442] [2022-11-26 00:19:16,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:16,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:16,919 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 00:19:16,919 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:16,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413011442] [2022-11-26 00:19:16,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413011442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:16,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:16,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:19:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139338565] [2022-11-26 00:19:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:16,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:19:16,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:16,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:19:16,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:19:16,923 INFO L87 Difference]: Start difference. First operand 26017 states and 100857 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 00:19:17,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:17,789 INFO L93 Difference]: Finished difference Result 34589 states and 133553 transitions. [2022-11-26 00:19:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:19:17,790 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2022-11-26 00:19:17,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:17,980 INFO L225 Difference]: With dead ends: 34589 [2022-11-26 00:19:17,981 INFO L226 Difference]: Without dead ends: 34589 [2022-11-26 00:19:17,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 00:19:17,982 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 124 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:17,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 32 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:19:18,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34589 states. [2022-11-26 00:19:19,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34589 to 30992. [2022-11-26 00:19:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30992 states, 30840 states have (on average 3.9890077821011674) internal successors, (123021), 30991 states have internal predecessors, (123021), 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 00:19:19,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30992 states to 30992 states and 123021 transitions. [2022-11-26 00:19:19,572 INFO L78 Accepts]: Start accepts. Automaton has 30992 states and 123021 transitions. Word has length 14 [2022-11-26 00:19:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:19,572 INFO L495 AbstractCegarLoop]: Abstraction has 30992 states and 123021 transitions. [2022-11-26 00:19:19,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 00:19:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 30992 states and 123021 transitions. [2022-11-26 00:19:19,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:19:19,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:19,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:19,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:19:19,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:19,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:19,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1373522530, now seen corresponding path program 1 times [2022-11-26 00:19:19,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:19,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508111658] [2022-11-26 00:19:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:19,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:19,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508111658] [2022-11-26 00:19:19,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508111658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:19:19,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991130651] [2022-11-26 00:19:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:19,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:19:19,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:19:19,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:19:19,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:19:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:19,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:19:19,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:19:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:19,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:19:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:19:19,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991130651] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:19:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1587995113] [2022-11-26 00:19:19,965 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:19:19,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:19:19,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-11-26 00:19:19,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083713349] [2022-11-26 00:19:19,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:19:19,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:19:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:19:19,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:19:19,968 INFO L87 Difference]: Start difference. First operand 30992 states and 123021 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 00:19:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:19:22,132 INFO L93 Difference]: Finished difference Result 74419 states and 290534 transitions. [2022-11-26 00:19:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:19:22,132 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 15 [2022-11-26 00:19:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:19:22,546 INFO L225 Difference]: With dead ends: 74419 [2022-11-26 00:19:22,546 INFO L226 Difference]: Without dead ends: 74419 [2022-11-26 00:19:22,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-11-26 00:19:22,547 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 969 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-26 00:19:22,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 140 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-26 00:19:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74419 states. [2022-11-26 00:19:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74419 to 40509. [2022-11-26 00:19:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40509 states, 40357 states have (on average 4.114701290978021) internal successors, (166057), 40508 states have internal predecessors, (166057), 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 00:19:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40509 states to 40509 states and 166057 transitions. [2022-11-26 00:19:25,007 INFO L78 Accepts]: Start accepts. Automaton has 40509 states and 166057 transitions. Word has length 15 [2022-11-26 00:19:25,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:19:25,023 INFO L495 AbstractCegarLoop]: Abstraction has 40509 states and 166057 transitions. [2022-11-26 00:19:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 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 00:19:25,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40509 states and 166057 transitions. [2022-11-26 00:19:25,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-26 00:19:25,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:25,026 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2022-11-26 00:19:25,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:19:25,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2331496-55c1-4913-bc68-9c6878d517c9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:19:25,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-26 00:19:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1917147580, now seen corresponding path program 1 times [2022-11-26 00:19:25,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:25,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940619859] [2022-11-26 00:19:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:25,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:19:25,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-26 00:19:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-26 00:19:25,281 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-26 00:19:25,281 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-26 00:19:25,281 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-26 00:19:25,281 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-26 00:19:25,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-26 00:19:25,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-26 00:19:25,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-26 00:19:25,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-26 00:19:25,282 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-26 00:19:25,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-26 00:19:25,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-26 00:19:25,283 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-26 00:19:25,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-26 00:19:25,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-26 00:19:25,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-26 00:19:25,284 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-26 00:19:25,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-26 00:19:25,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-26 00:19:25,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-26 00:19:25,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-26 00:19:25,285 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-26 00:19:25,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-26 00:19:25,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-26 00:19:25,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-26 00:19:25,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-26 00:19:25,286 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-26 00:19:25,287 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-26 00:19:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-26 00:19:25,287 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:19:25,288 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-26 00:19:25,288 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-26 00:19:25,329 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-26 00:19:25,333 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:19:25,333 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-26 00:19:25,334 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 228 transitions, 488 flow [2022-11-26 00:19:25,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 228 transitions, 488 flow [2022-11-26 00:19:25,427 INFO L130 PetriNetUnfolder]: 22/282 cut-off events. [2022-11-26 00:19:25,427 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-26 00:19:25,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 282 events. 22/282 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 866 event pairs, 0 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2022-11-26 00:19:25,454 INFO L119 LiptonReduction]: Number of co-enabled transitions 29040 [2022-11-26 00:19:30,969 INFO L134 LiptonReduction]: Checked pairs total: 99686 [2022-11-26 00:19:30,969 INFO L136 LiptonReduction]: Total number of compositions: 185 [2022-11-26 00:19:30,970 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 86 transitions, 204 flow [2022-11-26 00:19:53,833 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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 00:19:53,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:19:53,854 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;@4c4fd26f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:19:53,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-26 00:19:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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 00:19:54,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:19:54,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:19:54,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:19:54,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2022-11-26 00:19:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:19:54,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1519998261, now seen corresponding path program 1 times [2022-11-26 00:19:54,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:19:54,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830573174] [2022-11-26 00:19:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:19:54,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:19:54,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:19:54,885 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 00:19:54,885 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:19:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830573174] [2022-11-26 00:19:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830573174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:19:54,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:19:54,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:19:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560473173] [2022-11-26 00:19:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:19:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:19:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:19:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:19:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:19:55,880 INFO L87 Difference]: Start difference. First operand has 660725 states, 655528 states have (on average 5.050868917879938) internal successors, (3310986), 660724 states have internal predecessors, (3310986), 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)