./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI --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 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 --- 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-5e519f3 [2022-11-03 02:38:35,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:38:35,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:38:35,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:38:35,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:38:35,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:38:35,393 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:38:35,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:38:35,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:38:35,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:38:35,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:38:35,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:38:35,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:38:35,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:38:35,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:38:35,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:38:35,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:38:35,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:38:35,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:38:35,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:38:35,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:38:35,440 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:38:35,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:38:35,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:38:35,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:38:35,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:38:35,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:38:35,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:38:35,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:38:35,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:38:35,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:38:35,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:38:35,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:38:35,460 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:38:35,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:38:35,462 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:38:35,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:38:35,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:38:35,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:38:35,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:38:35,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:38:35,473 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-03 02:38:35,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:38:35,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:38:35,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:38:35,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:38:35,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:38:35,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:38:35,524 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:38:35,524 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:38:35,525 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:38:35,525 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:38:35,526 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:38:35,526 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:38:35,527 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:38:35,527 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:38:35,527 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:38:35,527 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:38:35,528 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:38:35,528 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:38:35,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:38:35,529 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:38:35,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-03 02:38:35,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:38:35,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:38:35,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:38:35,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:38:35,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:38:35,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:38:35,531 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-03 02:38:35,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:38:35,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:38:35,531 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:38:35,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:38:35,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:38:35,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:38:35,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:38:35,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:38:35,534 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:38:35,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:38:35,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:38:35,536 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:38:35,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:38:35,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:38:35,537 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:38:35,537 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_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 566e2cbe460cf96671c9cef5a53ce51910e23c462e96f394be80b957976729c5 [2022-11-03 02:38:35,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:38:35,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:38:35,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:38:35,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:38:35,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:38:35,905 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-03 02:38:36,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/data/a56d20d40/4840539bfed14871b283f5fc0c5b28c2/FLAGa1427fc04 [2022-11-03 02:38:36,591 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:38:36,592 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i [2022-11-03 02:38:36,624 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/data/a56d20d40/4840539bfed14871b283f5fc0c5b28c2/FLAGa1427fc04 [2022-11-03 02:38:36,867 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/data/a56d20d40/4840539bfed14871b283f5fc0c5b28c2 [2022-11-03 02:38:36,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:38:36,871 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:38:36,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:36,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:38:36,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:38:36,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:36" (1/1) ... [2022-11-03 02:38:36,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd32f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:36, skipping insertion in model container [2022-11-03 02:38:36,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:38:36" (1/1) ... [2022-11-03 02:38:36,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:38:36,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:38:37,439 WARN L230 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_f736c01c-5c70-47e3-97e4-c5be8908b6a4/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-03 02:38:37,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:37,479 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:38:37,536 WARN L230 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_f736c01c-5c70-47e3-97e4-c5be8908b6a4/sv-benchmarks/c/goblint-regression/28-race_reach_72-funloop_hard_racing.i[41323,41336] [2022-11-03 02:38:37,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:38:37,615 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:38:37,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37 WrapperNode [2022-11-03 02:38:37,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:38:37,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:37,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:38:37,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:38:37,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,692 INFO L138 Inliner]: procedures = 271, calls = 41, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 269 [2022-11-03 02:38:37,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:38:37,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:38:37,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:38:37,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:38:37,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:38:37,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:38:37,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:38:37,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:38:37,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (1/1) ... [2022-11-03 02:38:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:38:37,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:37,779 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:38:37,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:38:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:38:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:38:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:38:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:38:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-03 02:38:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:38:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-03 02:38:37,848 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-03 02:38:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:38:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:38:37,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:38:37,851 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 02:38:38,039 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:38:38,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:38:38,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:38:38,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:38:38,662 INFO L300 CfgBuilder]: Removed 35 assume(true) statements. [2022-11-03 02:38:38,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:38 BoogieIcfgContainer [2022-11-03 02:38:38,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:38:38,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:38:38,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:38:38,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:38:38,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:38:36" (1/3) ... [2022-11-03 02:38:38,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:38, skipping insertion in model container [2022-11-03 02:38:38,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:38:37" (2/3) ... [2022-11-03 02:38:38,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c52a261 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:38:38, skipping insertion in model container [2022-11-03 02:38:38,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:38:38" (3/3) ... [2022-11-03 02:38:38,676 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_72-funloop_hard_racing.i [2022-11-03 02:38:38,686 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 02:38:38,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:38:38,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-03 02:38:38,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 02:38:38,852 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-03 02:38:38,909 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:38:38,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 296 transitions, 600 flow [2022-11-03 02:38:38,928 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 296 transitions, 600 flow [2022-11-03 02:38:38,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 296 transitions, 600 flow [2022-11-03 02:38:39,100 INFO L130 PetriNetUnfolder]: 73/453 cut-off events. [2022-11-03 02:38:39,100 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-03 02:38:39,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 453 events. 73/453 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2189 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 248. Up to 8 conditions per place. [2022-11-03 02:38:39,129 INFO L118 LiptonReduction]: Number of co-enabled transitions 27388 [2022-11-03 02:38:45,852 INFO L133 LiptonReduction]: Checked pairs total: 46978 [2022-11-03 02:38:45,853 INFO L135 LiptonReduction]: Total number of compositions: 274 [2022-11-03 02:38:45,868 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 119 transitions, 246 flow [2022-11-03 02:38:45,984 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1328 states, 1209 states have (on average 3.0926385442514475) internal successors, (3739), 1327 states have internal predecessors, (3739), 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) [2022-11-03 02:38:46,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:38:46,028 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;@5a3b11da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:38:46,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-11-03 02:38:46,035 INFO L276 IsEmpty]: Start isEmpty. Operand has 1328 states, 1209 states have (on average 3.0926385442514475) internal successors, (3739), 1327 states have internal predecessors, (3739), 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) [2022-11-03 02:38:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 02:38:46,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:46,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 02:38:46,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:46,055 INFO L85 PathProgramCache]: Analyzing trace with hash 36731, now seen corresponding path program 1 times [2022-11-03 02:38:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881287063] [2022-11-03 02:38:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:46,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:46,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:46,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881287063] [2022-11-03 02:38:46,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881287063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:46,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:46,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:38:46,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135642142] [2022-11-03 02:38:46,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:46,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:46,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:46,461 INFO L87 Difference]: Start difference. First operand has 1328 states, 1209 states have (on average 3.0926385442514475) internal successors, (3739), 1327 states have internal predecessors, (3739), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:38:46,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:46,744 INFO L93 Difference]: Finished difference Result 1328 states and 2709 transitions. [2022-11-03 02:38:46,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:46,748 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-03 02:38:46,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:46,783 INFO L225 Difference]: With dead ends: 1328 [2022-11-03 02:38:46,784 INFO L226 Difference]: Without dead ends: 1318 [2022-11-03 02:38:46,785 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 [2022-11-03 02:38:46,791 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:46,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:38:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2022-11-03 02:38:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1318. [2022-11-03 02:38:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1318 states, 1202 states have (on average 2.2429284525790347) internal successors, (2696), 1317 states have internal predecessors, (2696), 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) [2022-11-03 02:38:46,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1318 states to 1318 states and 2696 transitions. [2022-11-03 02:38:46,948 INFO L78 Accepts]: Start accepts. Automaton has 1318 states and 2696 transitions. Word has length 2 [2022-11-03 02:38:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:46,948 INFO L495 AbstractCegarLoop]: Abstraction has 1318 states and 2696 transitions. [2022-11-03 02:38:46,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:38:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1318 states and 2696 transitions. [2022-11-03 02:38:46,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 02:38:46,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:46,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 02:38:46,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:38:46,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:46,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:46,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1140238, now seen corresponding path program 1 times [2022-11-03 02:38:46,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:46,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135416396] [2022-11-03 02:38:46,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:46,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:47,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:47,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135416396] [2022-11-03 02:38:47,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135416396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:47,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:47,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:38:47,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799142849] [2022-11-03 02:38:47,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:47,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:47,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:47,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:47,085 INFO L87 Difference]: Start difference. First operand 1318 states and 2696 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-03 02:38:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:47,216 INFO L93 Difference]: Finished difference Result 1317 states and 2695 transitions. [2022-11-03 02:38:47,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:47,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-03 02:38:47,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:47,224 INFO L225 Difference]: With dead ends: 1317 [2022-11-03 02:38:47,224 INFO L226 Difference]: Without dead ends: 1317 [2022-11-03 02:38:47,225 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 [2022-11-03 02:38:47,226 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:47,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 14 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:38:47,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2022-11-03 02:38:47,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1317. [2022-11-03 02:38:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1202 states have (on average 2.242096505823627) internal successors, (2695), 1316 states have internal predecessors, (2695), 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) [2022-11-03 02:38:47,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 2695 transitions. [2022-11-03 02:38:47,278 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 2695 transitions. Word has length 3 [2022-11-03 02:38:47,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:47,278 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 2695 transitions. [2022-11-03 02:38:47,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-03 02:38:47,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 2695 transitions. [2022-11-03 02:38:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:38:47,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:47,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:38:47,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:38:47,281 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:47,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash -390594275, now seen corresponding path program 1 times [2022-11-03 02:38:47,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:47,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330032721] [2022-11-03 02:38:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:47,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:47,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330032721] [2022-11-03 02:38:47,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330032721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:47,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340806672] [2022-11-03 02:38:47,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:47,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:47,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:47,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:47,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:38:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:47,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:38:47,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:47,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:47,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340806672] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:47,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658090027] [2022-11-03 02:38:47,631 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:336) 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) [2022-11-03 02:38:47,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:47,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:38:47,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462622034] [2022-11-03 02:38:47,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:47,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:38:47,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:47,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:38:47,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:47,637 INFO L87 Difference]: Start difference. First operand 1317 states and 2695 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-03 02:38:47,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:47,822 INFO L93 Difference]: Finished difference Result 1320 states and 2698 transitions. [2022-11-03 02:38:47,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:38:47,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 6 [2022-11-03 02:38:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:47,830 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 02:38:47,831 INFO L226 Difference]: Without dead ends: 1320 [2022-11-03 02:38:47,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:47,832 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:47,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:38:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2022-11-03 02:38:47,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2022-11-03 02:38:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1205 states have (on average 2.2390041493775934) internal successors, (2698), 1319 states have internal predecessors, (2698), 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) [2022-11-03 02:38:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 2698 transitions. [2022-11-03 02:38:47,916 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 2698 transitions. Word has length 6 [2022-11-03 02:38:47,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:47,916 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 2698 transitions. [2022-11-03 02:38:47,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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) [2022-11-03 02:38:47,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 2698 transitions. [2022-11-03 02:38:47,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-03 02:38:47,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:47,922 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2022-11-03 02:38:47,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:48,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:48,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:48,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1815019472, now seen corresponding path program 2 times [2022-11-03 02:38:48,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:48,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414942910] [2022-11-03 02:38:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:48,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:38:48,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:48,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414942910] [2022-11-03 02:38:48,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414942910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:48,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:48,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:38:48,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846234671] [2022-11-03 02:38:48,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:48,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:38:48,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:48,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:38:48,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:38:48,314 INFO L87 Difference]: Start difference. First operand 1320 states and 2698 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-03 02:38:48,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:48,523 INFO L93 Difference]: Finished difference Result 1235 states and 2559 transitions. [2022-11-03 02:38:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:38:48,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 [2022-11-03 02:38:48,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:48,531 INFO L225 Difference]: With dead ends: 1235 [2022-11-03 02:38:48,531 INFO L226 Difference]: Without dead ends: 1235 [2022-11-03 02:38:48,531 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 [2022-11-03 02:38:48,532 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:48,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:38:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2022-11-03 02:38:48,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 1235. [2022-11-03 02:38:48,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1144 states have (on average 2.236888111888112) internal successors, (2559), 1234 states have internal predecessors, (2559), 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) [2022-11-03 02:38:48,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 2559 transitions. [2022-11-03 02:38:48,600 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 2559 transitions. Word has length 9 [2022-11-03 02:38:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 2559 transitions. [2022-11-03 02:38:48,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-03 02:38:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 2559 transitions. [2022-11-03 02:38:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-03 02:38:48,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:48,602 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2022-11-03 02:38:48,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:38:48,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:48,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash 477123515, now seen corresponding path program 1 times [2022-11-03 02:38:48,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:48,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706645543] [2022-11-03 02:38:48,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:48,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:38:48,835 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:48,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706645543] [2022-11-03 02:38:48,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706645543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:38:48,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846066333] [2022-11-03 02:38:48,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:48,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:48,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:48,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:48,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:38:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:48,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:38:48,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:49,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:38:49,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:49,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:38:49,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846066333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:49,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [493362945] [2022-11-03 02:38:49,105 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:336) 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) [2022-11-03 02:38:49,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:38:49,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:38:49,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416941702] [2022-11-03 02:38:49,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:49,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:38:49,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:49,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:38:49,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:38:49,110 INFO L87 Difference]: Start difference. First operand 1235 states and 2559 transitions. Second operand has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:49,382 INFO L93 Difference]: Finished difference Result 1241 states and 2565 transitions. [2022-11-03 02:38:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:38:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-03 02:38:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:49,390 INFO L225 Difference]: With dead ends: 1241 [2022-11-03 02:38:49,391 INFO L226 Difference]: Without dead ends: 1241 [2022-11-03 02:38:49,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:38:49,402 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:49,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:38:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-11-03 02:38:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1241. [2022-11-03 02:38:49,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1150 states have (on average 2.2304347826086954) internal successors, (2565), 1240 states have internal predecessors, (2565), 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) [2022-11-03 02:38:49,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 2565 transitions. [2022-11-03 02:38:49,454 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 2565 transitions. Word has length 11 [2022-11-03 02:38:49,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:49,455 INFO L495 AbstractCegarLoop]: Abstraction has 1241 states and 2565 transitions. [2022-11-03 02:38:49,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:38:49,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 2565 transitions. [2022-11-03 02:38:49,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 02:38:49,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:49,458 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2022-11-03 02:38:49,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:49,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-11-03 02:38:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 848177307, now seen corresponding path program 2 times [2022-11-03 02:38:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:49,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999326295] [2022-11-03 02:38:49,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:49,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:38:49,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:38:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:38:49,831 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:38:49,831 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:38:49,833 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2022-11-03 02:38:49,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2022-11-03 02:38:49,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2022-11-03 02:38:49,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2022-11-03 02:38:49,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2022-11-03 02:38:49,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2022-11-03 02:38:49,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2022-11-03 02:38:49,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2022-11-03 02:38:49,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2022-11-03 02:38:49,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2022-11-03 02:38:49,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2022-11-03 02:38:49,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2022-11-03 02:38:49,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2022-11-03 02:38:49,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2022-11-03 02:38:49,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2022-11-03 02:38:49,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2022-11-03 02:38:49,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2022-11-03 02:38:49,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2022-11-03 02:38:49,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2022-11-03 02:38:49,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2022-11-03 02:38:49,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2022-11-03 02:38:49,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2022-11-03 02:38:49,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2022-11-03 02:38:49,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2022-11-03 02:38:49,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2022-11-03 02:38:49,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2022-11-03 02:38:49,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2022-11-03 02:38:49,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2022-11-03 02:38:49,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2022-11-03 02:38:49,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:38:49,851 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-11-03 02:38:49,854 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:38:49,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-03 02:38:49,908 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-03 02:38:49,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:38:49,913 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 380 transitions, 778 flow [2022-11-03 02:38:49,913 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 380 transitions, 778 flow [2022-11-03 02:38:49,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 380 transitions, 778 flow [2022-11-03 02:38:50,053 INFO L130 PetriNetUnfolder]: 118/731 cut-off events. [2022-11-03 02:38:50,053 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-03 02:38:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 745 conditions, 731 events. 118/731 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3914 event pairs, 0 based on Foata normal form. 0/555 useless extension candidates. Maximal degree in co-relation 455. Up to 12 conditions per place. [2022-11-03 02:38:50,107 INFO L118 LiptonReduction]: Number of co-enabled transitions 71340 [2022-11-03 02:38:57,627 INFO L133 LiptonReduction]: Checked pairs total: 127241 [2022-11-03 02:38:57,628 INFO L135 LiptonReduction]: Total number of compositions: 345 [2022-11-03 02:38:57,629 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 115 places, 162 transitions, 342 flow [2022-11-03 02:38:59,725 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34755 states, 33880 states have (on average 4.392886658795749) internal successors, (148831), 34754 states have internal predecessors, (148831), 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) [2022-11-03 02:38:59,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:38:59,727 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;@5a3b11da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:38:59,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2022-11-03 02:38:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 34755 states, 33880 states have (on average 4.392886658795749) internal successors, (148831), 34754 states have internal predecessors, (148831), 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) [2022-11-03 02:38:59,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 02:38:59,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:59,826 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 02:38:59,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:38:59,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:59,832 INFO L85 PathProgramCache]: Analyzing trace with hash 62632, now seen corresponding path program 1 times [2022-11-03 02:38:59,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:38:59,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521944404] [2022-11-03 02:38:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:38:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:59,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:38:59,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521944404] [2022-11-03 02:38:59,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521944404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:59,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:59,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:38:59,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151335058] [2022-11-03 02:38:59,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:59,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 02:38:59,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:38:59,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 02:38:59,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:39:00,063 INFO L87 Difference]: Start difference. First operand has 34755 states, 33880 states have (on average 4.392886658795749) internal successors, (148831), 34754 states have internal predecessors, (148831), 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 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:39:00,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:00,910 INFO L93 Difference]: Finished difference Result 34754 states and 106648 transitions. [2022-11-03 02:39:00,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 02:39:00,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-03 02:39:00,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:01,517 INFO L225 Difference]: With dead ends: 34754 [2022-11-03 02:39:01,526 INFO L226 Difference]: Without dead ends: 34742 [2022-11-03 02:39:01,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 02:39:01,532 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:01,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:39:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34742 states. [2022-11-03 02:39:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34742 to 34742. [2022-11-03 02:39:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34742 states, 33872 states have (on average 3.1480278696268305) internal successors, (106630), 34741 states have internal predecessors, (106630), 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) [2022-11-03 02:39:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34742 states to 34742 states and 106630 transitions. [2022-11-03 02:39:03,767 INFO L78 Accepts]: Start accepts. Automaton has 34742 states and 106630 transitions. Word has length 2 [2022-11-03 02:39:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:03,767 INFO L495 AbstractCegarLoop]: Abstraction has 34742 states and 106630 transitions. [2022-11-03 02:39:03,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 2.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:39:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 34742 states and 106630 transitions. [2022-11-03 02:39:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-03 02:39:03,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:03,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-03 02:39:03,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:39:03,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:03,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:03,769 INFO L85 PathProgramCache]: Analyzing trace with hash 62704, now seen corresponding path program 1 times [2022-11-03 02:39:03,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:03,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929911671] [2022-11-03 02:39:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:03,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:03,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:03,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:03,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929911671] [2022-11-03 02:39:03,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929911671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:03,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:03,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-03 02:39:03,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515173667] [2022-11-03 02:39:03,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:03,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:03,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:03,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:03,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:03,832 INFO L87 Difference]: Start difference. First operand 34742 states and 106630 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:39:04,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:04,579 INFO L93 Difference]: Finished difference Result 34743 states and 106631 transitions. [2022-11-03 02:39:04,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:04,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-11-03 02:39:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:04,825 INFO L225 Difference]: With dead ends: 34743 [2022-11-03 02:39:04,825 INFO L226 Difference]: Without dead ends: 34743 [2022-11-03 02:39:04,826 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 [2022-11-03 02:39:04,827 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:04,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:39:04,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34743 states. [2022-11-03 02:39:06,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34743 to 34743. [2022-11-03 02:39:06,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34743 states, 33873 states have (on average 3.1479644554660053) internal successors, (106631), 34742 states have internal predecessors, (106631), 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) [2022-11-03 02:39:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34743 states to 34743 states and 106631 transitions. [2022-11-03 02:39:06,356 INFO L78 Accepts]: Start accepts. Automaton has 34743 states and 106631 transitions. Word has length 2 [2022-11-03 02:39:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:06,357 INFO L495 AbstractCegarLoop]: Abstraction has 34743 states and 106631 transitions. [2022-11-03 02:39:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2022-11-03 02:39:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 34743 states and 106631 transitions. [2022-11-03 02:39:06,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-03 02:39:06,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:06,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-03 02:39:06,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:39:06,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1945675, now seen corresponding path program 1 times [2022-11-03 02:39:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874075609] [2022-11-03 02:39:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:06,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:06,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:06,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874075609] [2022-11-03 02:39:06,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874075609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:06,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:06,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:39:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652254931] [2022-11-03 02:39:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:06,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:06,400 INFO L87 Difference]: Start difference. First operand 34743 states and 106631 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-03 02:39:07,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:07,023 INFO L93 Difference]: Finished difference Result 34742 states and 106630 transitions. [2022-11-03 02:39:07,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:07,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-11-03 02:39:07,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:07,222 INFO L225 Difference]: With dead ends: 34742 [2022-11-03 02:39:07,223 INFO L226 Difference]: Without dead ends: 34742 [2022-11-03 02:39:07,223 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 [2022-11-03 02:39:07,225 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:07,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 19 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:39:07,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34742 states. [2022-11-03 02:39:08,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34742 to 34742. [2022-11-03 02:39:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34742 states, 33873 states have (on average 3.1479349334278037) internal successors, (106630), 34741 states have internal predecessors, (106630), 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) [2022-11-03 02:39:08,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34742 states to 34742 states and 106630 transitions. [2022-11-03 02:39:08,612 INFO L78 Accepts]: Start accepts. Automaton has 34742 states and 106630 transitions. Word has length 3 [2022-11-03 02:39:08,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:08,612 INFO L495 AbstractCegarLoop]: Abstraction has 34742 states and 106630 transitions. [2022-11-03 02:39:08,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-11-03 02:39:08,613 INFO L276 IsEmpty]: Start isEmpty. Operand 34742 states and 106630 transitions. [2022-11-03 02:39:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:39:08,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:08,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:08,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:39:08,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:08,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1590693421, now seen corresponding path program 1 times [2022-11-03 02:39:08,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:08,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068400617] [2022-11-03 02:39:08,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:08,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:08,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:08,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068400617] [2022-11-03 02:39:08,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068400617] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:08,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370751876] [2022-11-03 02:39:08,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:08,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:08,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:08,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:39:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:08,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:39:09,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:09,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:09,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370751876] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:39:09,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [158881606] [2022-11-03 02:39:09,128 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:336) 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) [2022-11-03 02:39:09,142 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:39:09,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-03 02:39:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455509138] [2022-11-03 02:39:09,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:39:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:39:09,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:09,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:39:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:39:09,145 INFO L87 Difference]: Start difference. First operand 34742 states and 106630 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-03 02:39:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:09,722 INFO L93 Difference]: Finished difference Result 34745 states and 106633 transitions. [2022-11-03 02:39:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:39:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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 7 [2022-11-03 02:39:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:09,890 INFO L225 Difference]: With dead ends: 34745 [2022-11-03 02:39:09,890 INFO L226 Difference]: Without dead ends: 34745 [2022-11-03 02:39:09,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:39:09,891 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:09,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:39:10,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34745 states. [2022-11-03 02:39:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34745 to 34745. [2022-11-03 02:39:11,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34745 states, 33876 states have (on average 3.1477447160231433) internal successors, (106633), 34744 states have internal predecessors, (106633), 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) [2022-11-03 02:39:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34745 states to 34745 states and 106633 transitions. [2022-11-03 02:39:11,209 INFO L78 Accepts]: Start accepts. Automaton has 34745 states and 106633 transitions. Word has length 7 [2022-11-03 02:39:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:11,210 INFO L495 AbstractCegarLoop]: Abstraction has 34745 states and 106633 transitions. [2022-11-03 02:39:11,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 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) [2022-11-03 02:39:11,210 INFO L276 IsEmpty]: Start isEmpty. Operand 34745 states and 106633 transitions. [2022-11-03 02:39:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-03 02:39:11,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:11,211 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:11,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:11,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:39:11,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:11,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1926588654, now seen corresponding path program 2 times [2022-11-03 02:39:11,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651399751] [2022-11-03 02:39:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:39:11,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:11,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651399751] [2022-11-03 02:39:11,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651399751] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:11,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:11,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:39:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435596976] [2022-11-03 02:39:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:11,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:11,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:11,495 INFO L87 Difference]: Start difference. First operand 34745 states and 106633 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:11,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:11,920 INFO L93 Difference]: Finished difference Result 34659 states and 106493 transitions. [2022-11-03 02:39:11,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:11,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-03 02:39:11,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:12,036 INFO L225 Difference]: With dead ends: 34659 [2022-11-03 02:39:12,037 INFO L226 Difference]: Without dead ends: 34659 [2022-11-03 02:39:12,037 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 [2022-11-03 02:39:12,037 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:12,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 38 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:39:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34659 states. [2022-11-03 02:39:13,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34659 to 34659. [2022-11-03 02:39:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34659 states, 33814 states have (on average 3.149375998107293) internal successors, (106493), 34658 states have internal predecessors, (106493), 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) [2022-11-03 02:39:13,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34659 states to 34659 states and 106493 transitions. [2022-11-03 02:39:13,292 INFO L78 Accepts]: Start accepts. Automaton has 34659 states and 106493 transitions. Word has length 10 [2022-11-03 02:39:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:13,292 INFO L495 AbstractCegarLoop]: Abstraction has 34659 states and 106493 transitions. [2022-11-03 02:39:13,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:39:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 34659 states and 106493 transitions. [2022-11-03 02:39:13,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 02:39:13,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:13,294 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:13,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:39:13,294 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:13,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash -620416898, now seen corresponding path program 1 times [2022-11-03 02:39:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:13,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789734208] [2022-11-03 02:39:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:13,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:13,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789734208] [2022-11-03 02:39:13,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789734208] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:39:13,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596646430] [2022-11-03 02:39:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:13,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:39:13,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:39:13,425 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:39:13,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:39:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:13,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:39:13,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:13,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:13,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596646430] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:39:13,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [339482468] [2022-11-03 02:39:13,634 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:336) 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) [2022-11-03 02:39:13,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:39:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-03 02:39:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209076738] [2022-11-03 02:39:13,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:39:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:39:13,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:39:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:39:13,640 INFO L87 Difference]: Start difference. First operand 34659 states and 106493 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-03 02:39:14,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:14,558 INFO L93 Difference]: Finished difference Result 34665 states and 106499 transitions. [2022-11-03 02:39:14,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:39:14,558 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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 [2022-11-03 02:39:14,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:14,691 INFO L225 Difference]: With dead ends: 34665 [2022-11-03 02:39:14,691 INFO L226 Difference]: Without dead ends: 34665 [2022-11-03 02:39:14,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:39:14,693 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:14,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:39:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34665 states. [2022-11-03 02:39:15,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34665 to 34665. [2022-11-03 02:39:15,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34665 states, 33820 states have (on average 3.1489946777055) internal successors, (106499), 34664 states have internal predecessors, (106499), 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) [2022-11-03 02:39:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34665 states to 34665 states and 106499 transitions. [2022-11-03 02:39:15,968 INFO L78 Accepts]: Start accepts. Automaton has 34665 states and 106499 transitions. Word has length 14 [2022-11-03 02:39:15,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:15,969 INFO L495 AbstractCegarLoop]: Abstraction has 34665 states and 106499 transitions. [2022-11-03 02:39:15,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 12 states have internal predecessors, (22), 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) [2022-11-03 02:39:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 34665 states and 106499 transitions. [2022-11-03 02:39:15,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:39:15,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:15,970 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:16,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:39:16,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f736c01c-5c70-47e3-97e4-c5be8908b6a4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:39:16,175 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:16,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1964194462, now seen corresponding path program 2 times [2022-11-03 02:39:16,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:16,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394903632] [2022-11-03 02:39:16,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:16,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:39:16,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:16,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394903632] [2022-11-03 02:39:16,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394903632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:16,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:16,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:39:16,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361158830] [2022-11-03 02:39:16,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:16,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:39:16,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:16,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:39:16,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:39:16,486 INFO L87 Difference]: Start difference. First operand 34665 states and 106499 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-03 02:39:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:17,847 INFO L93 Difference]: Finished difference Result 63889 states and 196857 transitions. [2022-11-03 02:39:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:39:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 20 [2022-11-03 02:39:17,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:18,122 INFO L225 Difference]: With dead ends: 63889 [2022-11-03 02:39:18,122 INFO L226 Difference]: Without dead ends: 63889 [2022-11-03 02:39:18,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:39:18,123 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 391 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:18,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 154 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:39:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63889 states. [2022-11-03 02:39:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63889 to 44562. [2022-11-03 02:39:19,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44562 states, 43717 states have (on average 3.208980488139625) internal successors, (140287), 44561 states have internal predecessors, (140287), 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) [2022-11-03 02:39:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44562 states to 44562 states and 140287 transitions. [2022-11-03 02:39:20,444 INFO L78 Accepts]: Start accepts. Automaton has 44562 states and 140287 transitions. Word has length 20 [2022-11-03 02:39:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:20,444 INFO L495 AbstractCegarLoop]: Abstraction has 44562 states and 140287 transitions. [2022-11-03 02:39:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2022-11-03 02:39:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 44562 states and 140287 transitions. [2022-11-03 02:39:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:39:20,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:20,446 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:39:20,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:20,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -635007035, now seen corresponding path program 1 times [2022-11-03 02:39:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:20,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537185530] [2022-11-03 02:39:20,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:20,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-03 02:39:20,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:20,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537185530] [2022-11-03 02:39:20,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537185530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:20,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:20,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:39:20,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903332464] [2022-11-03 02:39:20,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:20,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:20,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:20,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:20,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:20,520 INFO L87 Difference]: Start difference. First operand 44562 states and 140287 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-03 02:39:20,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:20,898 INFO L93 Difference]: Finished difference Result 43734 states and 137503 transitions. [2022-11-03 02:39:20,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:20,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 20 [2022-11-03 02:39:20,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:21,099 INFO L225 Difference]: With dead ends: 43734 [2022-11-03 02:39:21,099 INFO L226 Difference]: Without dead ends: 43734 [2022-11-03 02:39:21,100 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 [2022-11-03 02:39:21,100 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:21,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 36 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:39:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43734 states. [2022-11-03 02:39:22,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43734 to 43734. [2022-11-03 02:39:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43734 states, 42938 states have (on average 3.202361544552611) internal successors, (137503), 43733 states have internal predecessors, (137503), 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) [2022-11-03 02:39:22,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43734 states to 43734 states and 137503 transitions. [2022-11-03 02:39:22,563 INFO L78 Accepts]: Start accepts. Automaton has 43734 states and 137503 transitions. Word has length 20 [2022-11-03 02:39:22,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:22,564 INFO L495 AbstractCegarLoop]: Abstraction has 43734 states and 137503 transitions. [2022-11-03 02:39:22,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-03 02:39:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 43734 states and 137503 transitions. [2022-11-03 02:39:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-03 02:39:22,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:22,566 INFO L195 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:22,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:39:22,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:22,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash -635006968, now seen corresponding path program 1 times [2022-11-03 02:39:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:22,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21626657] [2022-11-03 02:39:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:39:22,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:22,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21626657] [2022-11-03 02:39:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21626657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:22,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:22,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:39:22,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756039255] [2022-11-03 02:39:22,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:39:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:22,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:39:22,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:39:22,642 INFO L87 Difference]: Start difference. First operand 43734 states and 137503 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-03 02:39:23,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:23,063 INFO L93 Difference]: Finished difference Result 42906 states and 134719 transitions. [2022-11-03 02:39:23,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:39:23,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 20 [2022-11-03 02:39:23,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:23,271 INFO L225 Difference]: With dead ends: 42906 [2022-11-03 02:39:23,271 INFO L226 Difference]: Without dead ends: 42906 [2022-11-03 02:39:23,272 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 [2022-11-03 02:39:23,273 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:23,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 19 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:39:23,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42906 states. [2022-11-03 02:39:24,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42906 to 42906. [2022-11-03 02:39:24,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42906 states, 42159 states have (on average 3.1954979956830094) internal successors, (134719), 42905 states have internal predecessors, (134719), 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) [2022-11-03 02:39:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42906 states to 42906 states and 134719 transitions. [2022-11-03 02:39:25,040 INFO L78 Accepts]: Start accepts. Automaton has 42906 states and 134719 transitions. Word has length 20 [2022-11-03 02:39:25,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:25,040 INFO L495 AbstractCegarLoop]: Abstraction has 42906 states and 134719 transitions. [2022-11-03 02:39:25,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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) [2022-11-03 02:39:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42906 states and 134719 transitions. [2022-11-03 02:39:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:39:25,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:25,041 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:39:25,042 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1897887356, now seen corresponding path program 1 times [2022-11-03 02:39:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:25,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430142028] [2022-11-03 02:39:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:25,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:25,143 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 02:39:25,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:39:25,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430142028] [2022-11-03 02:39:25,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430142028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:39:25,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:39:25,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:39:25,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190882196] [2022-11-03 02:39:25,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:39:25,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:39:25,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:39:25,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:39:25,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:39:25,146 INFO L87 Difference]: Start difference. First operand 42906 states and 134719 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-03 02:39:26,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:39:26,641 INFO L93 Difference]: Finished difference Result 78818 states and 247135 transitions. [2022-11-03 02:39:26,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:39:26,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 22 [2022-11-03 02:39:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:39:26,965 INFO L225 Difference]: With dead ends: 78818 [2022-11-03 02:39:26,966 INFO L226 Difference]: Without dead ends: 78818 [2022-11-03 02:39:26,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:39:26,967 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 186 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:39:26,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 101 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:39:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78818 states. [2022-11-03 02:39:28,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78818 to 73004. [2022-11-03 02:39:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73004 states, 72257 states have (on average 3.253207301714713) internal successors, (235067), 73003 states have internal predecessors, (235067), 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) [2022-11-03 02:39:29,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73004 states to 73004 states and 235067 transitions. [2022-11-03 02:39:29,113 INFO L78 Accepts]: Start accepts. Automaton has 73004 states and 235067 transitions. Word has length 22 [2022-11-03 02:39:29,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:39:29,114 INFO L495 AbstractCegarLoop]: Abstraction has 73004 states and 235067 transitions. [2022-11-03 02:39:29,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-03 02:39:29,114 INFO L276 IsEmpty]: Start isEmpty. Operand 73004 states and 235067 transitions. [2022-11-03 02:39:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-03 02:39:29,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:39:29,115 INFO L195 NwaCegarLoop]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 02:39:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:39:29,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2022-11-03 02:39:29,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:39:29,116 INFO L85 PathProgramCache]: Analyzing trace with hash -356281091, now seen corresponding path program 1 times [2022-11-03 02:39:29,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:39:29,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218584948] [2022-11-03 02:39:29,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:29,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:39:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:39:29,141 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:39:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:39:29,166 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:39:29,166 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:39:29,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (34 of 35 remaining) [2022-11-03 02:39:29,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 35 remaining) [2022-11-03 02:39:29,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 35 remaining) [2022-11-03 02:39:29,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 35 remaining) [2022-11-03 02:39:29,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 35 remaining) [2022-11-03 02:39:29,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 35 remaining) [2022-11-03 02:39:29,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 35 remaining) [2022-11-03 02:39:29,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 35 remaining) [2022-11-03 02:39:29,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 35 remaining) [2022-11-03 02:39:29,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 35 remaining) [2022-11-03 02:39:29,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 35 remaining) [2022-11-03 02:39:29,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 35 remaining) [2022-11-03 02:39:29,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 35 remaining) [2022-11-03 02:39:29,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 35 remaining) [2022-11-03 02:39:29,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 35 remaining) [2022-11-03 02:39:29,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 35 remaining) [2022-11-03 02:39:29,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 35 remaining) [2022-11-03 02:39:29,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 35 remaining) [2022-11-03 02:39:29,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 35 remaining) [2022-11-03 02:39:29,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 35 remaining) [2022-11-03 02:39:29,171 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 35 remaining) [2022-11-03 02:39:29,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 35 remaining) [2022-11-03 02:39:29,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 35 remaining) [2022-11-03 02:39:29,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 35 remaining) [2022-11-03 02:39:29,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 35 remaining) [2022-11-03 02:39:29,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 35 remaining) [2022-11-03 02:39:29,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 35 remaining) [2022-11-03 02:39:29,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 35 remaining) [2022-11-03 02:39:29,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 35 remaining) [2022-11-03 02:39:29,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 35 remaining) [2022-11-03 02:39:29,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 35 remaining) [2022-11-03 02:39:29,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 35 remaining) [2022-11-03 02:39:29,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 35 remaining) [2022-11-03 02:39:29,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 35 remaining) [2022-11-03 02:39:29,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 35 remaining) [2022-11-03 02:39:29,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:39:29,175 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:39:29,176 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-03 02:39:29,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-03 02:39:29,217 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 02:39:29,222 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 02:39:29,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 396 places, 464 transitions, 958 flow [2022-11-03 02:39:29,223 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 396 places, 464 transitions, 958 flow [2022-11-03 02:39:29,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 396 places, 464 transitions, 958 flow [2022-11-03 02:39:30,331 INFO L130 PetriNetUnfolder]: 168/1050 cut-off events. [2022-11-03 02:39:30,331 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-03 02:39:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1078 conditions, 1050 events. 168/1050 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6007 event pairs, 1 based on Foata normal form. 0/798 useless extension candidates. Maximal degree in co-relation 739. Up to 16 conditions per place. [2022-11-03 02:39:30,430 INFO L118 LiptonReduction]: Number of co-enabled transitions 127920 [2022-11-03 02:39:39,400 INFO L133 LiptonReduction]: Checked pairs total: 218304 [2022-11-03 02:39:39,401 INFO L135 LiptonReduction]: Total number of compositions: 414 [2022-11-03 02:39:39,402 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 143 places, 201 transitions, 432 flow